Digital power receiving / transforming fire control system

Abstract

A system that prevents electrical accidents that may lead to fires in an electrical circuit configuration in which the power circuit from the power source and the load circuit to the load are electrically connected via various electrical devices. A system that prevents accidents that may damage the various power, electrical devices, and equipment that are the loads to which the load circuit is connected. A system that prevents electrical accidents caused by short circuits, sparks, tracking, etc. in low-voltage distribution boards, distribution boards, control panels, system trunk lines, wiring, terminal electrical equipment, terminal load equipment, etc.

Description

[Technical field]

[0001] This invention relates to a system that prevents the occurrence of electrical accidents leading to fires, etc., in an electrical circuit configuration in which a power supply side electrical circuit from a power source and a load side electrical circuit toward a load are electrically connected via various electrical equipment, etc., prevents the occurrence of accidents that cause damage to various power / electrical equipment / devices that are loads to which the load side electrical circuit is connected, and further prevents the occurrence of electrical accidents, etc. due to short circuits, sparks, tracking, etc. in low-voltage distribution boards, distribution boards, control panels, system trunk lines, wiring, terminal electrical equipment, terminal load equipment, etc. [Background technology]

[0002] The applicant of the present application has named a digital electric safety control system (Patent Document 1) "Deathcon" and has already put into practice this system, which prevents electrical accidents that could lead to fires when a power circuit from the power source and a load circuit going to a load that operates by receiving power, such as lighting equipment and devices, air conditioning equipment and devices, refrigeration and freezing equipment and devices, and production equipment and devices, are electrically connected via power devices such as substation equipment, distribution boards, switchboards, lighting panels, power panels, control panels, and junction boxes, which are equipped with electrical equipment such as a main breaker and a ground fault circuit interrupter.

[0003] The applicant of the present application has proposed a "Digital Electric Safety Control System" which prevents electrical accidents leading to fires, etc. in electric power equipment such as distribution boards, switchboards, lighting panels, power panels, control panels, and junction boxes, in which a power supply side electric circuit from the power source and a load side electric circuit heading toward a load are electrically connected via electric equipment installed inside a housing, and further prevents accidents from occurring which may cause damage to various power / electrical equipment / devices connected to the load side electric circuits (Patent Document 2).

[0004] The applicant of the present application has proposed a system, which he calls the "Death Control Operation Safety System", that automatically switches on / off each of a number of loads connected to a load-side circuit, automatically reads the amount of power used by the loads and automatically calculates the amount of power used, thereby saving labor, and further prevents electrical accidents that could lead to fires by detecting things like loose bolts in bolt-screw tightening connections in electric power equipment, insufficient insertion into outlets, and leakage currents caused by dirt adhering to bolt-screw tightening connections, etc. (Patent Document 3). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 6732278 [Patent Document 2] Patent No. 6836234 [Patent Document 3] Patent No. 6991636 Summary of the Invention [Problem to be solved by the invention]

[0006] The applicant of the present application implemented the "Digital Electric Safety Control System" patented in Patent Document 1, naming it "Deathcon," and evolved the "Digital Electric Safety Control System" in Patent Document 1 to obtain a patent for the "Digital Electric Safety Control System" in Patent Document 2. The applicant then obtained a patent for the "Deathcon Operation Safety System," an invention that is an evolution of these, in Patent Document 3. After further study, the applicant has now completed the present invention, the "Digital Substation Fire Control System."

[0007] The applicant of the present patent application is currently preparing to provide the "Digital Substation Fire Control System" according to the present invention to society under the name "DSFCO System."

[0008] The "Digital substation fire control system" according to the present invention, i.e., the DSFCO system, can be exemplified as follows:

[0009] [1] Transformers that are installed in the middle of each electric circuit going from the power source to multiple loads and are subject to monitoring; A transformer sensed temperature value T T A transformer detection temperature value acquisition means for acquiring the temperature in degrees Celsius; The transformer detection current value I is the current value flowing through the electric circuit to the transformer being monitored. T A transformer detection current value acquisition means for grasping (amperes); The alarm temperature value T is preset for each heat resistance class classified according to the heat resistance characteristics of the insulating material used in the transformer being monitored. K ° C. for the transformer detected temperature value T T a safety attention coefficient calculation unit that calculates a safety attention coefficient S by a first calculation formula of dividing the temperature by °C and subtracting the result from 1; When the safety caution coefficient S calculated by the safety caution coefficient calculation unit is a positive number, the maximum allowable current value I M (amperes) by the safety caution coefficient S calculated by the first calculation formula for the transformer that is the monitoring target of the safety caution coefficient calculation unit. S A safety caution current value calculation unit that calculates (amperes); The transformer detection current value I, which flows through the transformer, the safety caution coefficient of which has been calculated by the safety caution coefficient calculation unit, via the electric circuit, and which is grasped by the transformer current value acquisition means. T (amperes), and the safety caution current value I calculated by the safety caution current value calculation unit S A transformer sensed current value comparison means for comparing the current (amperes) between the transformer and the input. The transformer detection current value I T (Amperes)>Safety Caution Current Value I S a power supply control means for controlling the power supply to the plurality of loads receiving power supply via the transformer and the electric circuit that are the monitoring targets for which the determination was made when the power supply is determined to be (amperes); A digital substation fire control system equipped with The above-mentioned "Digital substation fire control system", i.e., the DSFCO system, is a system that prevents the occurrence of electrical accidents leading to fires, etc. in an electrical circuit configuration in which the power side circuit from the power source and the load side circuit toward the load are electrically connected via various electrical devices, etc., prevents the occurrence of accidents that damage the various power / electrical devices / equipment that are the loads to which the load side circuit is connected, and further prevents the occurrence of electrical accidents, etc. due to short circuits, sparks, tracking, etc. in low-voltage distribution boards, distribution boards, control panels, system trunk lines, wiring, terminal electrical equipment, terminal load equipment, etc. As is well known, a maximum allowable temperature is set for each heat resistance class (e.g., A-class insulation, E-class insulation, B-class insulation, F-class insulation, H-class insulation) classified according to the heat resistance characteristics of the insulating material used in the transformer being monitored. In addition, corresponding to each maximum allowable temperature, a maximum allowable current value that flows through each transformer via an electric circuit is set for each heat resistance class (e.g., A-class insulation, E-class insulation, B-class insulation, F-class insulation, H-class insulation) classified according to the heat resistance characteristics of the insulating material used in the transformer. In the present invention, taking into consideration these known maximum allowable temperatures and maximum allowable current values, in order to achieve the object of the present invention, the above-mentioned warning temperature value T K ℃, maximum allowable current I M The temperature values ​​T (amperes) are arbitrarily set in advance for each heat resistance class, which is classified according to the heat resistance characteristics of the insulating material used in the transformer being monitored, within the range that can achieve the object of the present invention. K ℃, maximum allowable current I M (Amperes) are used. For example, if the maximum allowable temperature of the transformer to be monitored is 130°C and the maximum allowable current is 1718A (amperes), and the object of the present invention can be achieved by setting the alarm temperature value T K ℃ is 125℃, and the maximum allowable current value I M (Amperes) is 1700A (Amperes), and the transformer detection temperature value T T ℃ is 129℃, transformer detection current value I T If the current is 1000A (amperes), the result is as follows: First formula: 1-(T K ℃ / T T ℃) = 1 - (120℃ / 129℃) = 1 - 0.93 = 0.07 = safety precaution factor S Second formula: I M (Amperes) x Safety Caution Coefficient S = 1700A (Amperes) x 0.07 = 119 = Safety Caution Current Value I S (Amperes) In this case, the transformer detection current value I T (Ampere) = 1600A (Ampere) and safety precautions current value I S The relationship between (ampere) and 119A (ampere) is the transformer detection current value I T (Ampere) = 1000A (Ampere) > Safety Caution Current Value I S Since the output of the power supply is 119A (amperes), the power supply to a plurality of loads receiving power through the monitored transformer and electrical circuit is controlled. In this way, the transformer detection temperature value T T ℃ is used, and this is the transformer detection current value I T This is intended to be applied to power supply control based on amperes.

[0010] [2] The transformer detection temperature value T T ° C. and the transformer detection temperature value T T The maximum allowable temperature T that is preset for the heat resistance class that is classified according to the heat resistance characteristics of the insulating material used in the transformer whose temperature is known in °C. M A transformer temperature comparison means is provided for comparing the temperature with ℃. The transformer temperature comparison means detects the transformer temperature value T T ℃≧Maximum allowable temperature T M When it is determined that the temperature is ℃, The power supply control means controls the power supply to the plurality of loads receiving power supply via the transformer and the electric circuit that are the monitoring target for which the determination was made. [1] Digital substation fire control system. The transformer detection current value I T (Ampere) and Safety Precautions Current Value I S In addition to controlling the power supply by comparing the transformer temperature value T T ℃ and maximum allowable temperature T M ° C. and performs power supply control by comparing the temperature with the temperature. Maximum allowable temperature T M The degrees Celsius are arbitrarily set in advance within a range that allows the objective of the present invention to be achieved for each heat-resistance class (e.g., class A insulation, class E insulation, class B insulation, class F insulation, class H insulation) classified according to the heat-resistance characteristics of the insulating material used in the transformer being monitored, taking into consideration the maximum allowable temperatures set for each heat-resistance class, as is well known, classified according to the heat-resistance characteristics of the insulating material used in the transformer being monitored. For example, if the maximum allowable temperature of the transformer to be monitored is 130°C and the maximum allowable current is 1718A (amperes), and the maximum allowable temperature T M °C is 135 °C, and the transformer detection temperature value T T When the temperature reaches 135℃, the transformer detection temperature value T T ℃=135℃≧Maximum allowable temperature T M ℃ = 135℃, so the transformer detection current value I T (Ampere) and Safety Precautions Current Value I S Even while the power supply control is being performed by the process of comparing the load current (amperes) with the load current (amperes), the power supply control means controls the power supply to the plurality of loads receiving power via the transformers and electric circuits being monitored for which such a determination has been made.

[0011] [3] The digital substation fire control system includes a power supply cutoff means for cutting off power supply to the plurality of loads, The power supply control by the power supply control means is A digital substation fire control system as set forth in [1] or [2], which controls the power supply cut-off means to cut off the power supply to a specific one of a plurality of loads receiving power in a predetermined sequence.

[0012] [4] The transformer detection current value I T (Amperes)>Safety Caution Current Value I S When the transformer detection current value I T (Amperes) and the above safety precautions current value I S [3] A digital substation fire control system in which the order is preset according to the magnitude of the difference between the load and the load (amperes).

[0013] [5] The power supply control means When the load to which the power supply is to be cut off is a load for which power supply can be automatically cut off, the power supply cut-off means is controlled so as to automatically cut off the power supply to the load; When the load to be cut off is one for which automatic power cutoff is not possible, the power supply cut-off means cuts off the power supply to a load device control device that controls the load for which automatic power cut-off is not possible, and then controls the power supply cut-off means to cut off the power supply to the load for which automatic power cut-off is not possible. [3] or [4] Digital substation fire control system.

[0014] [6] The control by the power supply control means is performed by the transformer detection current value comparison means. T (Ampere) ≦ the above safety precaution current value I S A digital substation fire control system [1] to [5] that continues to operate until it is determined that the power supply is at a constant current (amperes).

[0015] [7] The transformer detection current value I T (Amperes)>Safety Caution Current Value I S (ampere), a first alarm notification information output means for outputting first alarm notification information together with information identifying the load to a terminal of a person in charge of managing the load to which power is supplied via the electric circuit in which the transformer to be monitored is installed; a first confirmation information acquisition confirmation means for monitoring whether or not confirmation information for confirming that the first alarm notification information has been acquired is returned from the person in charge terminal that has received the output of the first alarm notification information; It also has The first alarm notification information output means continues to output the first alarm notification information to the person in charge terminal until the first confirmation information acquisition confirmation means confirms a return of the first confirmation information. A digital substation fire control system comprising any of the following: [1] - [6] The first alarm notification information is transmitted to a terminal of a person in charge of managing the load to which power is supplied via the electric circuit in which the transformer to be monitored is installed, by the transformer detection current value comparison means. T (Amperes)>Safety Caution Current Value I S This notifies the occurrence of a condition determined to be (ampere).

[0016] [8] The transformer temperature comparison means detects the transformer temperature value T T ℃≧Maximum allowable temperature T M When it is determined that the temperature is ℃, a second alarm notification information output means for outputting second alarm notification information together with information identifying the load to a terminal of a person in charge of managing the load to which power is supplied via the electric circuit in which the transformer to be monitored is installed; a second confirmation information acquisition confirmation means for monitoring whether or not confirmation information for confirming that the second alarm notification information has been acquired is returned from the person in charge terminal that has received the output of the second alarm notification information; It also has The second alarm notification information output means continues to output the second alarm notification information to the person in charge terminal until the second confirmation information acquisition confirmation means confirms a return of the second confirmation information. A digital substation fire control system comprising any of the following: [1] - [7] The second alarm notification information is transmitted to a terminal of a person in charge of managing the load to which power is supplied via the electric circuit in which the transformer to be monitored is installed, by the transformer temperature comparison means.T ℃≧Maximum allowable temperature T M This notifies the occurrence of a state in which the temperature is determined to be below 100 °C.

[0017] [9] The power supply control means When a fire alarm installed in the building where the transformer is installed and detects smoke, heat, or flames and issues an alarm, the fire and disaster prevention panel installed in the building receives an alarm, The power supply cutoff means is controlled so as to cut off power supply to the load installed in the area where the activated fire alarm is installed and / or to a plurality of the loads installed in the building. A digital substation fire control system comprising any of the following: [1] - [8]. This is to prevent secondary electrical accidents caused by short circuits, sparks, tracking, etc. in low-voltage distribution boards, distribution boards, control panels, main lines of the system, wiring, terminal electrical equipment, terminal load equipment, etc. due to the outbreak of a fire.

[0018] <Example of digital substation fire control system configuration> An example of the configuration of a digital substation fire control system (hereinafter referred to as a DSFCO system).

[0019] The heat resistance characteristics of a transformer in a power receiving and substation facility are, for example, as follows: In addition, in this specification and drawings, "transformer" may be abbreviated as "TR," "power receiving and substation equipment" may be abbreviated as "cubicle," and "AC instantaneous current detector" (Current Transformer) may be abbreviated as "CT."

[0020] Transformers are classified into the following heat resistance classes according to the heat resistance properties of the insulating material used.

[0021] Insulating materials include 1) insulating oil, 2) SF6 gas, 3) craft paper, 4) pressboard, 5) mica, 6) glass fiber, 7) epoxy resin, 8) silicon resin, 9) alkyd resin, etc., and the maximum allowable temperatures of 1) insulating oil to 9) alkyd resin are specified. In addition, the heat resistance class A applies to oil-filled transformers using the above various insulating materials, and B, F, and H apply to molded transformers.

[0022] Transformers are designed so that, when used under standard operating conditions, the temperature rise limit of the windings (the difference between the winding temperature and the ambient temperature) will not be exceeded and each part of the insulation will not exceed the maximum allowable temperature of its heat resistance class. However, when the ambient temperature exceeds the maximum value of 40°C or due to excessive overload operation, there is a risk that the maximum allowable temperature will be exceeded.

[0023] Since the lifespan of a transformer is most affected by the maximum temperature, continuous operation for a long time above the maximum allowable temperature will shorten the expected lifespan of a transformer from 30 years. The environment and configuration of the transformer are, for example, used at an altitude of 1,000m or less, ambient temperature: indoor use: -5℃ to +40℃, outdoor use: -20℃ to +40℃, the daily average temperature should not exceed 35℃ and the annual average temperature should not exceed 20℃, the voltage waveform of the circuit: the voltage waveform of the circuit to which the transformer is connected should be approximately sinusoidal, and voltage balance of the three-phase circuit: the three-phase circuit to which the three-phase transformer is connected should be approximately balanced.

[0024] The reference winding temperature is determined as a reference temperature for calculating characteristic values ​​such as load loss and short circuit impedance because the resistance value changes depending on the winding temperature.

[0025] The heat resistance class and temperature of the insulating material of TR (transformer) is 140K in the Japan Electrical Manufacturers' Association standard number: JEM 1310:2001 Temperature rise limit and standard winding temperature (heat resistance class H) of dry-type transformers.

[0026] The reference winding temperature is determined as a reference temperature for calculating characteristics such as load loss and short-circuit impedance because the resistance value changes depending on the winding temperature.

[0027] The boiling point of insulating oil in 6kV distribution oil-filled transformers (JIS C 4303 1999), oil-filled reactors (JIS 4902 2003), 6kV distribution molded transformers (JIS C 4306), and TRs is set to be around 290℃ to 340℃.

[0028] The automatic shutdown of the distribution board, circuits, terminal electrical equipment, and load equipment of the system based on the detected temperature and the voltage, TR capacity, thermal relay, circuit current, equipment capacity, etc. of the building's power receiving and transforming equipment, for example, three lighting transformers (TR) and four power transformers (TR), is carried out, for example, as follows:

[0029] For example, for a lighting TR of 200KVA, the system of a low-voltage lighting distribution board is composed of four sides of main distribution board No. 1 (25.0KVA x 4) + No. 5 (20KVA) + No. 6 (25.0KVA), and additional distribution board No. 7 (27.5KVA) + No. 8 (27.5KVA), with a main distribution board capacity of 145kw + additional distribution board 55kw = distribution board capacity of 200.KVA, with a maximum current of 952A and an alarm current of the safety thermal relay of 780A. Proportionately, the load equipment capacity of the TR is 164kw, with a load factor of 82%. The capacity of the main + additional distribution boards is 200KVA, which is 100% of the TR capacity of 200KVA, but the load equipment capacity of the thermal relay is 164KVA, with a load factor of 82%.

[0030] That is, the lighting TR equipment capacity is 200KVA, maximum current is 952A, alarm current is 780A, main + additional distribution board capacity is 200KVA, load equipment capacity is 164KVA, and load rate is 82%.

[0031] As mentioned above, the maximum current of the lighting transformer Tr1.1φ200kVA is 952A, and the low-voltage lighting distribution board for system No. 1 is the 1st floor lighting distribution board No. 1 to No. 6 main distribution board 145.0KVA, load factor 73%, additional distribution board 55KVA, surplus rate 27%, so the maximum load factor of the main + additional distribution boards is 100%.

[0032] However, the total of the 145KVA main distribution board and 55.0KVA additional distribution board for the above mentioned low voltage lighting panel system is 200KVA, and the current value is 952 A. As described above, the demand operating rate of the lighting equipment is 70-75%, capacity = (200KVAX70%-75%) = 140KVA-150KVA, and operating demand current A = (maximum current 952A x 70%-80%) = about 667A-762A, which means that there is a margin (surplus rate) of about 30%-20%.

[0033] By adding terminal load equipment to a low-voltage lighting switchboard with a power capacity of 100% or a capacity that exceeds the system terminal load equipment, the distribution board for the equipment in question becomes the main distribution board and the additional distribution board is added. When the terminal load equipment is operated by installing a main + additional distribution board with a capacity of 100% or more than 100% of the TR capacity of 200KVA and maximum current of 952A, for example, the TR capacity of 200KVA may be exceeded and the maximum allowable temperature of insulation type A, 105℃, may be exceeded.

[0034] In other words, the lighting transformer Tr is 200kVA, maximum current is 952A, the main distribution board is 145KVA, load factor is 73%, load equipment capacity is 55KVA, surplus rate is 27%, the main distribution board is 145KVA and the additional distribution board is 55.0KVA, for a total of 200KVA, current value is 952A, demand operating rate is 70~75%, operating demand current A = (maximum current 952A x 70%~80%) = 667A~762A, surplus rate is 30%~20%.

[0035] The allowable maximum temperature for each insulation type of electric lighting transformer with a safe allowable temperature is 105℃ for type A, 120℃ for type E, 130℃ for type B, 155℃ for type F, and 180℃ for type H. The allowable maximum temperature of the corresponding type A to type H is used as a reference to determine whether the detected temperature of the temperature sensor installed in the TR exceeds the corresponding allowable maximum temperature or is below the allowable maximum temperature. Alternatively, the allowable maximum temperature of each type A to type H is used as a reference to determine whether the safety caution temperature is preset with a safety temperature coefficient of 0.97. For example, when a type A TR detects a safety caution temperature of 102℃, which is equal to (type A allowable maximum temperature 105℃ x 0.97) An alert is sent to the PC, tablet, smartphone, etc. of the person in charge, with information such as the customer name, building name, facility name, location, TR light, power type and capacity, and electrical equipment load equipment name of the system terminal in the form of voice, numbers, images, etc., and the alert ringtone is sent continuously until the person in charge checks and resets it to prevent the person in charge from missing the information, and when the detected temperature rises above the safety caution temperature of 102°C, for example, the alarm cutoff temperature coefficient set in advance is, for example, 1.10 alarm cutoff temperature = safety caution temperature 102°C x alarm temperature coefficient 1.10 = 112.2.

[0036] For example, when the automatic shutoff temperature of 132°C = (detection temperature 132°C - alarm shutoff temperature 112.2°C) = 19.8°C, the automatic shutoff rate = 1 - (alarm shutoff temperature 112.2°C / detection temperature 132°C) = 15% is automatically shut off, and the order of shutoff of the terminal load equipment, electrical equipment, etc. of the relevant main distribution board and additional distribution board is determined, and the relevant distribution board, control panel, circuits, etc., and terminal load equipment, electrical equipment, etc. that will not be "damaged by shutting off" are automatically shut off, thereby reducing the current flowing through the relevant TR, and the TR temperature will decrease in proportion to the current value due to the reduction in the thermal load of the electrical resistance.

[0037] As described above, the DSFCO system automatically shuts off the distribution boards, control panels, circuits, etc., terminal load equipment, electrical equipment, etc. of the TR system when the detection temperature is 132°C, but if the preset alarm cut-off temperature of 112.2°C is not reached, the automatic cut-off program will automatically shut off the relevant distribution boards, control panels, circuits, etc., terminal load equipment, electrical equipment, etc. until the alarm cut-off temperature of 112.2°C is reached. Conversely, the system can be configured so that even while the system is shutting down due to the program, the automatic cut-off will stop if the alarm cut-off temperature of 112.2°C is reached.

[0038] When the DSFCO system exceeds the alarm cutoff temperature of 112.2°C, for example, when the detection current value at a detection temperature of 132°C is 938A, the automatic cutoff rate is 15%, and the automatic cutoff temperature is 19.8°C.The system determines the cutoff priority of the relevant main distribution boards, additional distribution boards, terminal load equipment such as circuits, electrical equipment, etc., and can be configured to automatically cut off the relevant distribution boards, control panels, circuits, etc., as well as terminal load equipment, electrical equipment, etc. that can be cut off without any problems, for example, with a detection cutoff current A = (detection current 938A x automatic cutoff rate 15%) = 140.7A with an automatic cutoff rate of 15% for a detection current value of 938A.

[0039] The flow is, for example, as follows: Maximum allowable temperature: Class A: 105°C, Class E: 120°C, Class B: 130°C, Class F: 155°C, Class H: 180°C → Detection temperature: Exceeds or falls below maximum allowable temperature → Maximum allowable temperature: Standard safety temperature coefficient for Class A 105°C: 0.97 → Safe allowable temperature: 102°C → Alarm temperature cutoff coefficient: 1.10 → Alarm cutoff temperature: 112.2°C → Detection temperature: 132.0°C → Automatic cutoff temperature: 19.8°C → Automatic cutoff rate: 15.0% → Cutoff priority → Decrease in current value, decrease in thermal load of electrical resistance → Decrease in TR temperature → Detection temperature: 132°C → Alarm cutoff temperature: 112.2°C → Automatic cutoff program → Alarm cutoff temperature: 112.2°C → Detection temperature: 132°C → Detection current value: 938A → Automatic cutoff temperature 19.8°C → Automatic cutoff rate: 15% → Automatic cutoff current: 140.7A.

[0040] In the DSFCO system, if the detection temperature is 132°C and the detection current is 920A, for example, the alarm cutoff temperature is 112.2°C, the automatic cutoff temperature is 19.8°C, and the automatic cutoff rate is 15%, then the automatic cutoff current = (detection current 920A x automatic cutoff rate 15% = 138A). The detection current at the cutoff detection temperature is input, the automatic cutoff current is automatically input, and the system can be configured to automatically cut off using a pre-defined program.

[0041] For example, this flow is as follows: Detection temperature 132°C → Detection current 920A → Alarm cutoff temperature 112.2°C → Automatic cutoff temperature 19.8°C → Automatic cutoff rate 15% → Automatic cutoff current 138A.

[0042] The DSFCO system can be configured to automatically shut off, for example, products, production, etc., and logistics centers, large freezers, refrigerators, etc., commercial facilities where many people gather, lighting, elevators, etc., in terminal buildings, hotels, etc., data centers for important data, research and test results, etc., infrastructure substations, various types of equipment, electrical equipment, etc. in transportation trains, ships, etc., the relevant terminal equipment, program control of electrical equipment, etc., and terminal equipment for shutting off, etc., according to a predetermined program. In this case, the DSFCO system, which is composed of remote devices for each system such as distribution boards, switchboards, control panels, main lines, circuits, breakers, etc., and a cloud server, LAN, etc., can be configured in such a way that the remote devices for each system, such as the relevant distribution boards, switchboards, control panels, etc., send a signal to the protective stop device via an emergency response protection program via the cloud server, LAN, etc., to safely protect all or selected terminal equipment, etc., by having the function of shutting down via a program, and can also have a means to normally and safely implement and control the stop function, as well as a function to confirm the stop signal.

[0043] This form of automatic shutdown is adopted in any embodiment of the DSFCO system according to the present invention. The flow of this automatic shutdown is, for example, as follows: Terminal equipment for program control, shutdown, etc. → Automatic shutdown by program → Emergency response protection program → Shutdown → Safety and accuracy → Stop function control means → Function to confirm the stop signal.

[0044] For example, the flow for automatically shutting off the temperature of an electric light TR of a safe allowable temperature type when the detection current detected by the CT exceeds the safety caution temperature of 102°C and the temperature exceeds the alarm shutoff temperature (=102 x 1.10 = 112.2°C) with an alarm shutoff coefficient of 1.10 for the pre-set safety caution temperature of 102°C is as follows:

[0045] The maximum allowable temperatures for the insulation types of electric lighting transformers with alarm allowable temperature are Class A: 105°C, Class E: 120°C, Class B: 130°C, Class F: 155°C, and Class H: 180°C. Using the corresponding maximum allowable temperatures of Class A to Class H as a standard, it is judged whether the detected temperature of the temperature sensor installed in the TR exceeds the corresponding maximum allowable temperature or is equal to or lower than the maximum allowable temperature. Alternatively, using the maximum allowable temperatures of Class A to Class H as a standard, when it detects, for example, an alarm temperature coefficient of 1.0 arbitrarily set in advance as the alarm temperature coefficient, for example, the alarm temperature of Class A TR = Class A maximum allowable temperature 105°C x 1.0 = alarm allowable temperature 105°C, an alert is sent to the PC, tablet, smartphone, etc. of the relevant person in the form of voice, numerical value, image, etc., including, for example, the customer name, building name, facility name, location, TR light, power type and capacity, and the load equipment name of the electrical equipment of the system terminal. In addition, the alert incoming sound and image display based on the image information can be continuously transmitted until the relevant person confirms and resets it, thereby preventing the relevant person from missing the confirmation.

[0046] In addition, when the detection temperature rises above the alarm allowable temperature of 105°C, the alarm cutoff temperature coefficient, which is set arbitrarily in advance, is, for example, 1.10, so that the alarm cutoff temperature = alarm temperature or allowable maximum temperature 105°C x alarm cutoff coefficient 1.10 = 115.5°C. If the detection temperature is, for example, 132°C, the automatic cutoff temperature = (detection temperature 132°C - alarm cutoff temperature 115.5°C = 16.5°C automatic cutoff rate = Automatically shut off 1-(alarm shutoff temperature 115.5℃ / detection temperature 132℃)=13%, and determine the order of shutoff of the relevant main distribution board, terminal load equipment, electrical equipment, etc. of the additional distribution board, and automatically shut off the relevant distribution board, control panel, circuits, etc., terminal load equipment, electrical equipment, etc. that can be shut off without causing any problems. By reducing the current value passing through the relevant TR, the thermal load of the electrical resistance is reduced, and the TR temperature can be reduced in proportion to the current value.

[0047] As described above, the DSFCO system automatically shuts off the distribution boards, control panels, circuits, etc., terminal load equipment, electrical equipment, etc. of the TR system when the detection temperature is 132°C. However, if the preset alarm cutoff temperature of 115.5°C is reached, the automatic cutoff program will automatically shut off the relevant distribution boards, control panels, circuits, etc., terminal load equipment, electrical equipment, etc. Conversely, the system can be configured to automatically shut off the relevant distribution boards, control panels, circuits, etc., terminal load equipment, electrical equipment, etc. if the alarm cutoff temperature reaches 115.5°C even while the system is currently shut down by the program.

[0048] When the DSFCO system exceeds the alarm cutoff temperature of 115.5°C, for example, when the detection temperature is 132°C and the detection current value is 938A, the automatic cutoff temperature is 16.5°C and the automatic cutoff rate is 13%, and the cutoff priority is determined for the relevant main distribution boards, additional distribution boards, terminal load equipment such as circuits, electrical equipment, etc., and the relevant distribution boards, control panels, circuits, etc. as well as terminal load equipment, electrical equipment, etc. that can be cut off without any problems. For example, with an automatic cutoff rate of 13% for a detection current value of 938A, the detection cutoff current A = (detection current 938A x automatic cutoff rate 13%) = 121.9A.

[0049] An example of this flow is as follows: Maximum allowable temperature is A type 105°C, E type 120°C, B type 130°C, F type 155°C, H type 180°C → Detection temperature: Over maximum allowable temperature, Below maximum allowable temperature → Maximum allowable temperature value: Reference, alarm temperature coefficient 1.0 → Alarm allowable temperature 105°C, alarm temperature cutoff coefficient 1.10 → Alarm cutoff temperature 115.5°C → Detection temperature 132.0°C → Automatic cutoff temperature 16.5°C → Automatic cutoff rate 13.0% → Cutoff ranking → Decrease in current value, decrease in thermal load of electrical resistance → Decrease in TR temperature → Detection temperature 132°C → Alarm cutoff temperature 115.5°C → Automatic cutoff program → Alarm cutoff temperature 115.5°C → Detection temperature 132°C → Detection current value 938A → Automatic cutoff temperature 16.5°C → Automatic cutoff rate 13% → Detection cutoff current 121.9A.

[0050] With the DSFCO system, for example, if the detection temperature is 132°C and the detection current is 920A, the alarm cutoff temperature is 115.5°C, the automatic cutoff temperature is 16.5°C, and the automatic cutoff rate is 13%, so the automatic cutoff current = (detection current 920A x automatic cutoff rate 13%) = 110A.The detection current at the cutoff detection temperature is input, the automatic cutoff current is automatically input, and the system can be configured to automatically cut off according to a pre-determined program.

[0051] For example, this flow is as follows: Detection temperature 132°C → Detection current 920A → Alarm cutoff temperature 115.5°C → Automatic cutoff temperature 16.5°C → Automatic cutoff rate 13% → Automatic cutoff current 110A.

[0052] For electric lamp TRs of the alarm allowable temperature type, when the detection current detected by the CT rises above the allowable alarm temperature of 105°C and the preset allowable alarm temperature of 105°C is set with an alarm cutoff coefficient of 1.10, the lamp can be configured to automatically cut off at temperatures above the alarm cutoff temperature = (1102.2 x 1.10) = 112.2°C.

[0053] The following are examples of embodiments of automatic shutdown of the distribution board, circuits, terminal electrical equipment, and load equipment of a building's substation equipment, for example, the voltage, TR capacity, thermal relay, circuit current, equipment capacity, etc. of four power transformers (power TRs), and the system based on detected temperature.

[0054] The DSFCO system has a power TR of 500KVA for the above equipment, and is configured with a low voltage power distribution board system, for example, main distribution board No. 1 58.1KVAX, No. 6 5 sides + No. 6 30.0KVA, and additional No. 7 59.9KVA + No. 8 59.9KVA + No. 9 59.9KVA, for a main distribution board capacity of 320.5kw + additional distribution board 179.7kw = distribution board capacity 500.2KVA, TR capacity is 500KVA, maximum current is 1718A, the alarm current of the safety thermal relay is 1350A, and the load factor is 79%, so the capacity of the main + additional distribution boards is 500KVA, which is 100% of the TR capacity of 500KVA, but the thermal relay load equipment capacity is 79% of 393KVA.

[0055] For example, this flow is as follows: Power TR capacity 500KVA → Maximum current 1718A → Load factor 79% → Panel capacity 500KVA → Load equipment capacity 393KVA.

[0056] As shown in the example above, the maximum current of transformer Tr1.3φ500kVA on low-voltage power panel No. 1 is 1718A, and the low-voltage power distribution panel for system No. 1 is the 1st floor power distribution panel No. 1 to No. 6, main distribution panel 320.5KVA, load factor 64%, expansion distribution panel 179.7KVA, surplus rate 36%, with a total capacity of 500KVA for the main and expansion distribution panels and a maximum load factor of 100%.

[0057] However, the total of the 320.5KVA main distribution board and 179.7KVA additional distribution board for the above-mentioned low voltage power panel system is 500KVA, and the current value is 1718A. As described above, the demand operating rate of the lighting equipment is 65%~75% capacity = 500KVAX 65%~75%) = about 325KVA~375KVA, and the operating demand current A = (maximum current 1718A x 65%~75%) = about 1116A~1288A, which means that there is a surplus rate of about 35%~25%.

[0058] In addition, by adding terminal load equipment with a capacity exceeding 100% of the power capacity of the low-voltage power distribution board or the system terminal load equipment, the distribution board of the relevant equipment will be added to the main distribution board. When the terminal load equipment is operated by adding a main distribution board + an additional distribution board that exceeds 100% of the TR capacity of 500KVA and maximum current of 1718A, for example, the TR capacity of 200KVA may be exceeded and the maximum allowable temperature of insulation type A of 105℃ may be exceeded.

[0059] For example, this flow is as follows: Distribution board capacity 500KVA → Maximum current 1718A → Demand 65% to 75% → Operating margin (surplus) rate 35% to 25%.

[0060] The allowable maximum temperatures for the insulation types of power TR transformers of the safe allowable temperature type are 105°C for type A, 120°C for type E, 130°C for type B, 155°C for type F, and 180°C for type H. Based on the allowable maximum temperatures of the corresponding types A to H, it is judged whether the detected temperature of the temperature sensor installed in the TR exceeds the corresponding allowable maximum temperature or is below the allowable maximum temperature. Alternatively, based on the allowable maximum temperature values ​​of the above types A to H, for example, a safety temperature coefficient of 0.97 is arbitrarily set in advance as a safety caution temperature. For example, when a type A TR detects a safety caution temperature of 102°C (type A allowable maximum temperature 105°C x 0.97) = safety caution temperature, an alert is sent to the PC, tablet, smartphone, etc. of the relevant person in the form of voice, numerical value, image, etc., including, for example, the customer name, building name, facility name, location, TR light, power type and capacity, and electrical equipment load equipment name of the system terminal. The alert incoming sound and image display using image information can be continuously transmitted until the relevant person confirms and resets it, thereby preventing the relevant person from missing the confirmation.

[0061] The detection temperature rises above the safety caution temperature of 102°C, and the detection temperature rises above the safety caution temperature of 102°C, for example, and the alarm cutoff temperature coefficient can be set arbitrarily in advance, for example, 1.10 alarm cutoff temperature = safety caution temperature 102°C x alarm temperature coefficient 1.10 = 112.2°C.

[0062] For example, when the detection temperature is 132°C, the automatic shutoff temperature = (detection temperature 132°C - alarm shutoff temperature 112.2°C) = 19.8°C, and the automatic shutoff rate = 1 - (alarm shutoff temperature 112.2°C / detection temperature 132°C) = 15%, the order of shutoff of the relevant main distribution board, additional distribution board, terminal load equipment, electrical equipment, etc. is determined, and by automatically shutting off the relevant distribution board, control panel, circuits, etc., and terminal load equipment, electrical equipment, etc., which can be shut off without causing any problems, the current value passing through the relevant TR is reduced, and the TR temperature is reduced in proportion to the current value due to the reduction in the thermal load of the electrical resistance.

[0063] As described above, the DSFCO system automatically shuts off the distribution boards, control panels, circuits, etc., terminal load equipment, electrical equipment, etc. of the TR system when the detection temperature is 132°C, but if the preset alarm cutoff temperature of 112.2°C is not reached, the automatic cutoff program will automatically shut off the relevant distribution boards, control panels, circuits, etc., terminal load equipment, electrical equipment, etc. until the alarm cutoff temperature of 112.2°C is reached. Conversely, the system can also be configured to stop the automatic cutoff if the alarm cutoff temperature of 112.2°C is reached even while the system is shutting down due to the program.

[0064] For example, if the detection current value when the alarm cutoff temperature of 112.2°C is exceeded, for example when the detection temperature is 132°C, is 1620A, and the automatic cutoff rate is 18%, then the automatic cutoff temperature is 19.8°C and the cutoff rate is 18%. The cutoff order of the relevant main distribution boards, additional distribution boards, terminal load equipment such as circuits, electrical equipment, etc. can be determined and cut off without any problems, for example the relevant distribution boards, control panels, circuits, etc. as well as terminal load equipment, electrical equipment, etc. can be configured to automatically cut off if the detection current value is 1620A, with an automatic cutoff rate of 18%, so the detection cutoff current A = (detection current 1620A x automatic cutoff rate 18%) = 291.6A.

[0065] An example of this flow is as follows: Maximum allowable temperature is A type 105°C, E type 120°C, B type 130°C, F type 155°C, H type 180°C → Detection temperature: Over maximum allowable temperature, Below maximum allowable temperature → Maximum allowable temperature value: Standard → Safety temperature coefficient 0.97 → Safe allowable temperature 102°C → Alarm temperature cutoff coefficient 1.10 → Alarm cutoff temperature 112.2°C → Detection temperature 132.0°C → Automatic cutoff temperature 19.8°C → Automatic cutoff rate % 18.0 → Cutoff rank → Decrease in current value, decrease in thermal load of electrical resistance → Decrease in TR temperature → Detection temperature 132°C → Alarm cutoff temperature 112.2°C → Cutoff temperature program → Detection temperature 132°C → Detection current value 1620A → Automatic cutoff temperature 19.8°C → Automatic cutoff rate 18% → Automatic cutoff current 291.6A.

[0066] In the DSFCO system, for example, if the detection current is 1590A when the detection temperature is 132°C, the alarm cutoff temperature is 112.2°C, the automatic cutoff temperature is 19.8°C, and the automatic cutoff rate is 18%, then the automatic cutoff current = (detection current 1590A x automatic cutoff rate 18% = 286A). The detection current at the cutoff detection temperature is input, the automatic cutoff current is automatically input, and the system can be configured to automatically cut off according to a pre-defined program.

[0067] For example, this flow is as follows: Detection temperature 132°C → Detection current 920A → Alarm cutoff temperature 112.2°C → Automatic cutoff temperature 19.8°C → Automatic cutoff rate 18% → Automatic cutoff current 286A.

[0068] This automatic shutoff can also be implemented in the manner and flow described above.

[0069] For a power TR of a safe allowable temperature type, when the detection current detected by the CT rises above the safety caution temperature of 102°C and the alarm cutoff coefficient for the pre-set safety caution temperature of 102°C is 1.10, the alarm cutoff temperature = (102.2 x 1.10) = 112.2°C or higher can be automatically cut off.

[0070] The maximum allowable temperatures for the insulation types of power TR transformers with alarm allowable temperature are A type 105°C, E type 120°C, B type 130°C, F type 155°C, and H type 180°C. Using the allowable maximum temperatures for the corresponding A to H types as standards, it is judged whether the detected temperature of the temperature sensor installed in the TR exceeds the corresponding allowable maximum temperature or is below the allowable maximum temperature.

[0071] Based on the above-mentioned maximum allowable temperature values ​​of Classes A to H, for example, when the alarm temperature coefficient is arbitrarily set in advance as a safety caution temperature, for example, the alarm temperature of Class A TR = (Class A maximum allowable temperature 105°C x 1.0) = alarm allowable temperature 105°C is detected, an alert is sent to the PC, tablet, smartphone, etc. of the relevant person with voice, numerical value, image, etc., such as the customer name, building name, facility name, location, TR light, power type capacity, electrical equipment load equipment name of the system terminal, etc. In addition, the alert ringtone and image display by image information can be continuously sent until the relevant person confirms and resets, preventing the relevant person from missing the confirmation.

[0072] When the detected temperature rises above the allowable alarm temperature of 105°C, for example, and the detected temperature rises above the allowable alarm temperature of 105°C, the alarm shutoff temperature coefficient that is arbitrarily set in advance can be, for example, 1.15 alarm shutoff temperature = (alarm temperature or allowable maximum temperature 105°C x alarm shutoff coefficient 1.15) = 121°C.

[0073] For example, when the automatic shutoff temperature for a detection temperature of 140°C = (detection temperature 140°C - alarm shutoff temperature 121°C) = 19.0°C automatic shutoff rate = 1 - (alarm shutoff temperature 121°C / detection temperature 140°C) = 14%, the order of shutoff of the relevant main distribution board, additional distribution board's terminal load equipment, electrical equipment, etc. is determined, and by automatically shutting off the relevant distribution board, control panel, circuits, etc., and terminal load equipment, electrical equipment, etc., which can be shut off without causing any problems, the current value passing through the relevant TR is reduced, and the TR temperature is reduced in proportion to the current value due to the reduction in the thermal load of the electrical resistance.

[0074] As described above, the DSFCO system automatically shuts off the distribution boards, control panels, circuits, etc., terminal load equipment, electrical equipment, etc. of the TR system with a detection temperature of 140°C, but if the pre-set alarm cut-off temperature of 121°C is not reached, the automatic cut-off program will automatically shut off the relevant distribution boards, control panels, circuits, etc., terminal load equipment, electrical equipment, etc. until the alarm cut-off temperature of 121°C is reached.Conversely, the system can be configured so that even while the system is shutting down due to the program, the automatic cut-off will stop if the alarm cut-off temperature of 121°C is reached.

[0075] For example, if the detection current value when the alarm cutoff temperature of 121°C is exceeded is 1620A, and the detection temperature is 19.0°C and the automatic cutoff rate is 14%, the relevant main distribution boards, additional distribution boards, terminal load equipment such as circuits, electrical equipment, etc. can be set in a cutoff order to cut off the relevant distribution boards, control panels, circuits, etc. as well as terminal load equipment, electrical equipment, etc. without any problems.If the detection current value is 1620A, the automatic cutoff rate is 14%, and the detection cutoff current A = (detection current 1620A x automatic cutoff rate 14%) = 226.8A.

[0076] This flow is, for example, as follows: If the allowable maximum temperature is A-class 105°C, E-class 120°C, B-class 130°C, F-class 155°C, and H-class 180°C, then the detection temperature is: above the allowable maximum temperature, below the allowable maximum temperature, then the allowable maximum temperature value is: standard, then the alarm temperature coefficient is 1.0, then the alarm allowable temperature is 105°C, then the alarm temperature cutoff coefficient is 1.15, then the alarm cutoff temperature is 121°C, then the detection temperature is 140.0°C, then the automatic cutoff temperature is 19.0°C, then the automatic cutoff rate is 14.0%, then the cutoff priority is: current value decrease, then the thermal load of the electrical resistance decreases, then the TR temperature decrease, then the detection temperature is 140°C, then the alarm cutoff temperature is 115.5°C, then the cutoff temperature program is: detection temperature is 140°C, then the detection current value is 1620A, then the automatic cutoff temperature is 19.0°C, then the automatic cutoff rate is 14%, then the detection cutoff current is 226.8A.

[0077] In the DSFCO system, for example, if the detection temperature is 140°C and the detection current is 1620A, the alarm cutoff temperature is 115.5°C, the automatic cutoff temperature is 19.0°C, and the automatic cutoff rate is 14%, then the automatic cutoff current = (detection current 1620A x automatic cutoff rate 14%) = 226.8A. The detection current at the cutoff detection temperature is input, the automatic cutoff current is automatically input, and the system can be configured to automatically cut off according to a pre-determined program.

[0078] For example, this flow is as follows: Detection temperature 140°C → Detection current 1620A → Alarm cutoff temperature 115.5°C → Automatic cutoff temperature 19.0°C → Automatic cutoff rate 14% → Automatic cutoff current 226.8A.

[0079] This automatic shutoff can also be implemented in the manner and flow described above.

[0080] For power TR of alarm allowable temperature type, when the detection current detected by the CT rises above the allowable maximum temperature, and the alarm cutoff temperature is set to (105 x 1.15) = 121°C or higher, the alarm cutoff temperature is automatically cut off at an alarm cutoff temperature of 105°C, which is an alarm cutoff coefficient of 1.15, which is a preset arbitrary alarm allowable temperature.

[0081] The automatic shutdown of the boiling point temperature of the distribution board, circuits, terminal electrical equipment, and load equipment of the system based on the detected temperature, for example, the voltage, TR capacity, thermal relay, circuit current, equipment capacity, etc. of three electric lighting transformers (electric lighting TRs) of a building, can be implemented, for example, as follows.

[0082] For example, of the three electric lighting transformers (electric lighting TRs) in a building's substation equipment, the capacity of electric lighting TR No. 1, the thermal relay, circuit current, equipment capacity, etc., as well as the detection temperature and interruption coefficient of the main distribution board can be determined as follows:

[0083] The maximum allowable temperature for each insulation type of boiling point alarm temperature type is 105°C for Class A, 120°C for Class E, 130°C for Class B, 155°C for Class F, and 180°C for Class H. Regardless of the above, the load capacity of the system's low-voltage distribution board, distribution board, circuits, etc. in the permanent design documents is added to the surrounding environment of the substation equipment and electric lighting / power TR or the TR capacity KVA, and the additional capacity due to the usage status of the system electrical equipment, machinery equipment, terminal load equipment, etc.

[0084] For example, due to an overload of 200 KVA and a maximum current of 952 A in the No. 1 electric light TR, or an abnormally high temperature such as the outside air temperature in the surrounding environment, the boiling point temperature of the insulating oil in the TR is set to about 290°C to 340°C.

[0085] The DSFCO system can be configured to send alerts of the insulating oil boiling point of the insulating oil, for example, a predetermined, arbitrary, boiling point caution temperature = (boiling point temperature 290°C x coefficient 0.40 = 116.0°C), and send relevant information such as customer name, building name, facility name, location, TR light, power type, capacity, electrical equipment of the system terminal, and loading equipment name as voice, numerical value, image, etc. to the PCs, tablets, smartphones, etc. of the relevant parties. Also, the alerts can be sent continuously until the relevant parties confirm the image displayed based on the alert transmission and image information, thereby preventing electrical burnout accidents and fire accidents from occurring.

[0086] If the boiling point warning temperature of the lamp TR exceeds 116°C, the preset temperature of the lamp transformer in question is set to, for example, boiling point alarm cutoff temperature = (boiling point temperature 290°C x cutoff coefficient 0.50 = 145.0°C). In addition, a system can be made to distinguish between cases where automatic cutoff is not possible and cases where automatic cutoff is possible, which are preset in advance. For example, if the detection temperature is 205°C, the system distribution board, circuits, etc. of the corresponding low-voltage distribution board and the terminal load equipment of the terminal load electrical equipment will be automatically cut off by the automatic cutoff program until the preset boiling point alarm cutoff temperature of 290°C x cutoff coefficient 0.50 is reached, which is 145.0°C, and if the boiling point alarm cutoff temperature of 145.0°C is reached even during boiling point alarm cutoff, the automatic cutoff will stop.

[0087] When the DSFCO system exceeds the alarm boiling point cutoff temperature of 145.0°C, for example when the detection temperature is 205°C and the detection current value is 950A, the automatic cutoff temperature = (detection temperature 205°C - 145.0°C) = 60.0°C and the automatic cutoff rate = (60°C / 205°C) = 29.2%, the cutoff order of the relevant main distribution boards, additional distribution boards, circuits and other terminal load equipment, electrical equipment, etc. is determined and the relevant distribution boards, control panels, circuits, etc. as well as terminal load equipment, electrical equipment, etc. can be configured to automatically cut off when there is no problem by cutting off, for example when the detection current value is 950A and the detection cutoff current A = (detection current 950A x automatic cutoff rate 29.2%) = 277.4A).

[0088] For example, this flow is as follows: Maximum allowable temperature → No.1 electric light TR 200KVA, maximum current 952A → Boiling point temperature is about 290℃ to 340℃ → Boiling point caution temperature = (boiling point temperature 290℃ x coefficient 0.40 = 116.0℃) → Boiling point caution temperature → Alert transmission → Confirm alert transmission → Continuous transmission → Boiling point caution temperature exceeds 116℃ → Boiling point alarm cutoff temperature 145.0℃ → Automatic cutoff program → Automatic cutoff → Distinguish whether automatic cutoff is possible → "Detected temperature is 205℃ → Boiling point alarm cutoff temperature 290℃ x cutoff coefficient 0.50 → Automatic cutoff program Ram → Automatic shutoff → Boiling point alarm shutoff → Boiling point alarm shutoff → Boiling point alarm shutoff temperature 145.0℃ → Automatic shutoff stops → Alarm boiling point shutoff temperature 145.0℃ → Detection temperature 205℃ → Detection current value 1330A → Automatic shutoff temperature = (Detection temperature 205℃ - 145.0℃) = 60.0℃ → Automatic shutoff rate = (60℃ / 205℃) = 29.2% → Shutoff priority → No problems with shutoff → Detection current value 950A → Detected shutoff current A = (Detection current 950A × automatic shutoff rate 29.2%) = 277.4A) → Automatic shutoff.

[0089] In the above flow, the detected current may be the upper limit of the maximum current of 952A.

[0090] For boiling point alarm temperature type electric lamp TR, if the detection current detected by the CT rises above the boiling point caution temperature of 116°C, and the temperature exceeds the alarm cutoff temperature of 145°C with a cutoff coefficient of 0.50 for the boiling point alarm cutoff temperature, which is preset as desired, the lamp can also be configured to automatically cut off at such a temperature.

[0091] For example, automatic shutdown of the building's power receiving and transforming equipment based on the voltage, TR capacity, thermal relay, circuit current, equipment capacity, etc. of four power transformers (power TRs), and the boiling point temperature of the system's distribution board, circuits, terminal electrical equipment, and load equipment of 290℃ to 340℃ detected by the temperature can be implemented as follows.

[0092] Of the four boiling point alarm temperature type power transformers (power TR), the capacity of power TR No. 1, the thermal relay, circuit current, equipment capacity, etc., and the detection temperature and cut-off coefficient of the main distribution board are, for example, as follows:

[0093] In the DSFCO system, the load capacity of the system's low voltage distribution board, distribution board, circuits, etc., as well as the additional capacity due to the usage status of the system electrical equipment, mechanical equipment, terminal load equipment, etc. are added to the surrounding environment of the substation equipment, electric lighting and power TR or the TR capacity KVA. For example, due to an overload of 500KVA and maximum current of 1718A for the No. 1 power TR or abnormally high temperatures such as the outside air temperature in the surrounding environment, the boiling point of the insulating oil in the TR is set to be around 290℃ to 340℃.

[0094] For example, the boiling point caution temperature is (boiling point temperature 290°C x coefficient 0.40 = 116.0°C), and as the boiling point caution temperature, an alert is sent to the PC, tablet, smartphone, etc. of the relevant person with voice, numerical value, image, etc., such as the customer name, building name, facility name, location, TR light, power type, capacity, electrical equipment of the system terminal, and loading equipment name. In addition, it is possible to prevent electrical burnout accidents and fire accidents by continuously sending the alert until the relevant person confirms the image display based on the image information.

[0095] The DSFCO system can be configured to exceed the boiling point caution temperature of 116°C and distinguish between cases where automatic shutdown is not possible and cases where automatic shutdown is possible for the power transformer in question, for example, the boiling point alarm cutoff temperature = (boiling point temperature 290°C x coefficient 0.50 = 145.0°C). For example, if the detection temperature is 205°C, the automatic shutdown program will automatically shut off the system distribution board, circuits, etc. of the low-voltage distribution board in question, and terminal load electrical equipment terminal load equipment, etc., until the boiling point alarm cutoff temperature reaches 145.0°C, which is the boiling point alarm cutoff temperature of 290°C x coefficient 0.50, which has been preset arbitrarily. Conversely, if the boiling point alarm cutoff temperature reaches 145.0°C even during boiling point alarm shutdown, the automatic shutdown will stop.

[0096] When the DSFCO system exceeds the alarm boiling point cutoff temperature of 145.0°C, for example when the detection temperature is 205°C and the detection current value is 1560A, the automatic cutoff temperature = (detection temperature 205°C - 145.0°C) = 60.0°C and the automatic cutoff rate = (60°C / 205°C) = 29.2%, the cutoff order of the relevant main distribution boards, additional distribution boards, circuits and other terminal load equipment, electrical equipment, etc. can be determined and the relevant distribution boards, control panels, circuits, etc. as well as terminal load equipment, electrical devices, etc. can be automatically cut off at a detection current value of 1330A, for example when the detection cutoff current A = (detection current 1560 x automatic cutoff rate 29.2%) = 455.5A, so that there is no problem when cutting off.

[0097] For example, this flow is as follows: No.1 power TR 500KVA, maximum current 1718A → boiling point temperature 290℃~340℃ → boiling point caution temperature = (boiling point temperature 290℃ x coefficient 0.40 = 116.0℃) → boiling point caution temperature → alert transmission → confirm alert transmission → continuous transmission → boiling point caution temperature exceeds 116℃ → boiling point alarm temperature = (boiling point temperature 290℃ x coefficient 0.50 = 145.0℃) → automatic shutoff not possible → distinguish whether automatic shutoff is possible → detection temperature is 205℃ → boiling point alarm shutoff temperature 290℃ x coefficient 0.50 →Boiling point alarm cutoff temperature 145.0℃→Automatic cutoff program→Automatic cutoff→Boiling point alarm cutoff in progress→Boiling point alarm cutoff temperature 145.0℃→Automatic cutoff stopped→Alarm boiling point cutoff temperature 145.0℃→Detection temperature 205℃→Detection current value 1560A→Automatic cutoff temperature = (Detection temperature 205℃-145.0℃) = 60.0℃→Automatic cutoff rate = (60℃ / 205℃) = 29.2%→Detection cutoff current A = (Detection current 1560A × automatic cutoff rate 29.2%) = 455.5A)→Automatic cutoff. In the above flow, the sensed current may be the upper limit of the maximum current of 1718A.

[0098] For the boiling point alarm temperature type power TR, when the detection current detected by the CT rises above the boiling point caution temperature of 116°C, the alarm cutoff temperature of 145°C or higher is automatically cut off with a cutoff coefficient of 0.50 for the boiling point alarm cutoff temperature that is arbitrarily set in advance.

[0099] An example of the configuration and functions of the substation equipment, including electric lighting, power transformers, electric lighting and power low voltage distribution boards, and distribution boards and terminal load equipment, in the DSFCO system can be, for example, as follows:

[0100] For example, if a building's power receiving and transforming equipment has three lighting TRs and four power TRs, the insulation type of the TRs is Class A, and the configuration of the main distribution board + additional distribution board for the lighting TRs with respect to capacity, thermal relay, circuit current, equipment capacity, etc. is as follows:

[0101] The transformer capacity of the electric lighting and power of the electric power receiving and transforming equipment is set according to the area, floors, etc., which are the scale of the building, facility, etc., the purpose of the building, facility, etc., and the load capacity of the electric lighting and power equipment, such as terminal equipment and electrical equipment for each system, etc., which are installed, but the demand for the maximum load capacity consumed by the load capacity is generally a safety coefficient for the corresponding electric lighting, with the load factor being about 70 to 75% for electric lighting and about 60 to 65% for power. Therefore, for example, for an electric lighting, TR6.6k / 210-105V, single-phase 200kVA transformer, which is installed on the secondary side of the transformer as a protection function for the transformer, the thermal relay current value of the thermal actuation type on the secondary side of the ammeter CT is 3.9A, and the load factor for alarm transmission is 0.73, which is 73%.

[0102] For example, the capacity of Tr1 for a single-phase lamp is 6.6k / 210-105V, the transformer for a single-phase 200kVA is 200kVA, and the maximum allowable current is (200kVA / 210V x 1.0) x 1000 = 952.4A. For the ammeter CT1000A, the thermal relay current value is 3.9A, and the alarm load current for preventing TR overcurrent is 780A. Proportionately, the equipment capacity of the TR safety protection is 164KW and the load factor is 82%.

[0103] That is, the capacity of the lighting Tr1 is KVA 200, the maximum allowable current A is 952, the thermal relay current A is 3.9, the alarm load current A is 780, the load equipment capacity KW is 164, and the load factor is 0.82.

[0104] The lamp transformer capacity, maximum load current, thermal relay alarm setting value, load current value, maximum load rate, and safe allowable current are as follows.

[0105] For example, the relevant circuit of the permanently installed low-voltage lighting panel No. 1 transformer Tr1: 1φ, 200 kVA overcurrent protection thermal relay is installed on the secondary side of a 1000 A / 5 A CT, and the external alarm output can be set to, for example, 780 A at an alarm current of 3.9 A.

[0106] Alarm load current value = (3.9A × 1000) / 5A = 780A, load equipment capacity h1 = (I × V × e) = (780A × 210V × 1.0) ÷ 1,000 = 164kW, load factor = (163.8kw / 200KVA) = 82%.

[0107] That is, the warning load current A is 780, the load equipment capacity kW is 164, and the load factor is 82%.

[0108] For example, the safety functions of a conventional transformer have a TR capacity of 200 kVA, a maximum current value of 952 A, and a secondary output design of 5 A. However, the alarm load current is 780 A due to the thermal relay, even with an alarm current value of 3.9 A. At 780 A, which is a load factor of 82%, an alarm buzzer will sound at the site of the substation equipment.

[0109] Depending on the full operation status of the substation equipment of buildings, outdoor facilities, etc., for example, the permanent installation plus additional terminal equipment of the system depending on the use of the facility, the load capacity of the lighting TR of the system distribution board of the relevant low-voltage distribution board with a capacity of 200KVA, the low-voltage lighting distribution board, and the terminal equipment of the system distribution board may be, for example, 200KVA.

[0110] For example, depending on the usage situation, the configuration of the main plus additional low-voltage lighting distribution boards and system is as follows: Main lighting distribution board: 25.0KVA x 4 (No.1 to No.4) + 20.0KVA (No.5) + 25.0KVA (No.6) = 145.0KVA, load factor 73%, backup additional lighting distribution board (27.5KVA (No.7) + 27.5KVA (No.8)) = 55.0KVA, load factor 82%, distribution board 145.0KVA + 55.0KVA = 200KVA, maximum current is 952A, maximum load factor is 100%.

[0111] That is, the main distribution boards No. 1 to No. 6 are 145.0 KVA, the additional distribution board is 55.0 KVA, the main + additional distribution boards are 200.0 KVA, the maximum current is 952 A, and the maximum load rate is 100%.

[0112] The overcurrent protection thermal relay of transformer Tr1.: 1φ, 200kVA of low-voltage lighting panel No.1 is installed on the secondary side of the 1000 / 5A CT of the corresponding circuit. For example, the 3.9A thermal relay provides an alarm current of 780A regardless of the maximum load factor of 82%. For the sake of efficiency, the capacity of the main switchboard for lighting and power low voltage switchboard is 145.0KVA + the capacity of the additional switchboard for spare use is 55.0KVA, resulting in a configuration of electrical capacity of 200.0KVA and a load factor of 100%. However, the demand factor for both lighting and power in electrical equipment is not always 100%; normally, it is around 70-75% for lighting and 60-65% for power. Even with the equipment contents where the capacity of the additional switchboard is increased to a load factor of 100%, the possibility of a case where the power consumption is 100% is low. However, depending on the operating status of the terminal equipment, for example, the demand for system terminal load equipment increases and the alarm load current exceeds 780A, the load equipment capacity is 164kW, and the load factor exceeds 82%, and there are currently insufficient measures to deal with this situation.

[0113] For example, the TR capacity of the substation equipment in buildings and outdoor facilities is, for example, 200kVA, with a maximum current of 952A. For the safety protection function of the low-voltage lighting panel of the substation equipment, the thermal relay is, for example, 3.9A for the guard setting value of 5.0A, with an alarm load current of 780A, a load equipment capacity of 164KW, and a load factor of 82%, so No. 1 has a TR capacity of 200KVA. For the low-voltage lighting panel capacity of 200KVA, the capacity of the system distribution panel is, for example, 145KVA, which is the capacity of No. 1 to No. 6. The distribution board is 5KVA x 6 panels with a load factor of 73% and a surplus rate of 27%. The system distribution board of the relevant distribution board is added to the main distribution board mentioned above, and in order to utilize the uses and functions of the substation equipment, cubicles, etc. of the building facility or outdoor facility, in addition to the main distribution board of the system of the low-voltage lighting distribution board in order to increase efficiency, for example, by installing and operating additional distribution boards No. 1 to No. 2, etc., the amount of power exceeds 780A, and for example, the maximum current may be 952A and the TR capacity may be 200KVA or more.

[0114] The capacity of the DSFCO system's alarm current alarm type light TR1 is 200KVA, the maximum current is 952A, the alarm load current for overload prevention is 780A, and the proportional TR load equipment capacity of 164KW is entered into the database. For example, a CT ammeter installed in the light TR detects whether the detection current is an alarm current exceeding the CT detection current due to an overcurrent for safety protection, and the alarm load current of 780A is set as a pre-set caution alarm current of 780A, and relevant persons' PCs, tablets, smartphones, etc. are notified by "alerts" of the relevant information, such as customer name, building name, facility name, location, light, type of power, capacity, electrical equipment at the system terminal, load equipment name, etc., in the form of voice, numbers, images, etc. In addition, the alert ringtone and image display based on the image information are continuously transmitted until the relevant person confirms and resets, preventing oversight of the relevant person. When the detection current exceeds, for example, a caution alarm current of 780A and rises, a preset arbitrary alarm cutoff coefficient, for example, an alarm cutoff current of 1.10 = (Caution alarm current 780A x alarm cutoff coefficient 1.10) = 858A, and the maximum current load coefficient of the maximum current of 952A = (alarm cutoff current 858A / maximum current 952A) = 0.90, with a 10% surplus rate, the alarm is An embodiment can be implemented in which the automatic shutoff current is 858A or more, for example, when the detection current is 938A, the automatic shutoff current = (detection current 938A) - (alarm shutoff current 858A) = 80A, and for the relevant equipment capacity, the automatic shutoff capacity is 16.8KVA and a shutoff rate of 8.5% is automatically shut off, and the order in which terminal load equipment, electrical equipment, etc. of the main distribution board and additional distribution board corresponding to the shutoff rate are determined, and the terminal load equipment, electrical equipment, etc., and the relevant boards, circuits, etc. that can be shut off without causing any problems can be automatically shut off.

[0115] For example, this flow is as follows: Light TR1 capacity 200KVA → Maximum current 952A → Alarm load current 780A → Load equipment capacity 164KW → Alarm current excess → CT detection current → Caution alarm current 780A → Alarm cutoff coefficient 1.10 → Alarm cutoff current 858A → Maximum current load coefficient 0.9 → Surplus rate 10% → Alarm cutoff current 858A → Detection current 938A → Automatic cutoff current 80A → Automatic cutoff equipment capacity 16.8KVA → Cutoff rate 8.5%.

[0116] The DSFCO system sends alerts of the above-mentioned automatic shutoff to the relevant parties' PCs, tablets, smartphones, etc., including the customer name, building name, low-voltage distribution board, distribution board, control panel, circuits, etc., as well as audio, images, temperature values, etc. to terminal electrical equipment, terminal load equipment, etc., and continues to send alerts until the relevant parties confirm the image display based on the alert transmission and image information, allowing the relevant parties to check safety in real time after the relevant automatic shutoff and take any subsequent action.

[0117] This automatic shutoff can also be implemented in the manner and flow described above.

[0118] For example, a building's substation equipment may consist of three lighting transformers and four power transformers. The insulation type of the TR is Class A, and the configuration of the main distribution board + additional distribution board for the lighting TR, with capacity, thermal relay, circuit current, equipment capacity, etc., can be as follows:

[0119] When the detection current detected by the CT of an alarm current alarm type electric light TR rises above the caution alarm current of 780A and the preset alarm cutoff coefficient of the caution alarm current of 780A is 1.10, the automatic cutoff current = (1350A x 1.10) = 1485A or more can be automatically cut off.

[0120] The capacity of the electric light TR1 of the caution current safety type is 200KVA, the maximum current is 952A, the alarm load current for overload prevention is 780A, and proportionally the TR load equipment capacity of 164KW is entered as a database. For example, a CT ammeter installed in the electric light TR detects an alarm current excess due to an overcurrent for safety protection, and the alarm load current is 780A. However, due to a preset caution current coefficient of 0.97, the caution alarm current = (alarm load current 780A × caution current coefficient 0.97) = 756A, so the degree of safety is high and the load rate of the relevant TR decreases, and alerts are sent to the PCs, tablets, smartphones, etc. of the relevant persons to notify them of the relevant information, such as the customer name, building name, facility name, location, electric light, type of power, capacity, electrical equipment of the system terminal, load equipment name, etc., by voice, numerical value, image, etc. In addition, the alert incoming sound and image display based on the image information can be continuously transmitted until the relevant person confirms and resets it, thereby preventing the relevant person from failing to confirm.

[0121] The DSFCO system can be configured so that the detection current increases and the automatic shutoff occurs when the detection current is equal to or exceeds a preset maximum current of 952A, for example, a maximum current coefficient of 0.9, a surplus rate of 10%, and an alarm shutoff current of (maximum current 952A x maximum current coefficient 0.9) = 857A. If the detection current is 938A, the automatic shutoff occurs when the automatic shutoff current = (detection current 938A) - (alarm shutoff current 857A) = 81A, which is converted to equipment automatic shutoff capacity KVA = ((current 81A x voltage 210V x power factor 1.0) / 1000A = 17KVA, and the automatic shutoff equipment capacity of 17KVA is automatically shut off at an automatic shutoff rate of 8.6%, and the order of shutoff of the terminal load equipment, electrical equipment, etc. of the relevant main distribution board and additional distribution board can be determined, and the terminal load equipment, electrical equipment, etc. that can be shut off without causing any problems, as well as the relevant boards, circuits, etc., can be automatically shut off.

[0122] Lighting TR1 capacity 200KVA, maximum current 952A, alarm load current 780A, load equipment capacity 164KW, alarm current excess, CT detection current, alarm load current 780A, caution current coefficient: 0.97, caution alarm current 756A, maximum current load coefficient 0.9, surplus rate 10%, alarm cut-off current 857A, detection current 938A, automatic cut-off current 81A, automatic cut-off equipment capacity 17KVA, automatic cut-off rate: 8.6.

[0123] When the automatic shutoff occurs, the system sends alerts to the relevant parties' PCs, tablets, smartphones, etc., with the customer name, building name, low-voltage distribution board, distribution board, control panel, circuits, etc., as well as audio, images, temperature values, etc. to terminal electrical equipment, terminal load equipment, etc., and continues to send these alerts until the relevant parties confirm that the alert was sent, allowing the relevant parties to check safety in real time after the automatic shutoff and take any subsequent action. This automatic shutoff can also be implemented in the manner and flow described above.

[0124] When the current detected by the CT for a caution current safety type electric light TR rises above the caution alarm current of 756A and reaches the preset maximum current of 952A with a maximum current coefficient of 0.9, the automatic cutoff current = (maximum current 952A x 0.9 = 857A) is automatically cut off.

[0125] The configuration and functions of substation equipment (cubicles), electric lighting, power transformers, low voltage electric lighting and power distribution boards, and distribution boards and terminal load equipment under the DSFCO system.

[0126] For example, in order to enhance the safety function of the transformer, the DSFCO system detects a preset alarm current of 1350A or a warning coefficient of 0.98, for example (alarm current 1350A x warning coefficient 0.98) = 1323A, as a warning current, for a permanent distribution board with a load capacity of 393kw and a load operating rate of 79%, and sends an alert to the relevant person's PC, tablet, smartphone, etc., with the relevant information such as customer name, building name, facility name, location, transformer name, etc. Furthermore, the alert is sent continuously until the relevant person confirms the image display based on the alert transmission and image information and resets it, and sends an alert with voice, numerical value, image, etc. for each system.

[0127] For example, this flow is as follows: Alarm current 1350A → Load equipment capacity 393KW → Safety caution coefficient 0.98 → Caution current 1323A.

[0128] For example, for a transformer capacity of 500kVA, maximum current of 1718A, and a safety protection function of a low-voltage power distribution board of a transformer equipment for a building facility or outdoor facility, the thermal relay is 3.9A, the alarm load current is 1350A, the load equipment capacity is 393KW, and the load factor is 79%, so the capacity of No. 1 is 500KVA. For the capacity of the low-voltage power distribution board of 500KVA, the capacity of the system distribution board is, for example, 320.5KVA + No. 7 to No. 8 for the six main distribution boards No. 1 to No. 6. .9, 3 sides are 179.7KVA = 500KVA, with a load factor of 73% and a surplus rate of 27%. In addition to the main distribution board, the system distribution board of the relevant switchboard utilizes the uses and functions of the substation equipment and cubicles of the building facility or outdoor facility, and in addition to the main distribution board of the system of the low-voltage lighting distribution board to improve efficiency, the system terminal electrical equipment such as additional distribution boards, shelf load equipment, etc. are operating at full capacity, and the amount of power exceeds the alarm current of 1350A, for example, the maximum current is 1718A, the TR capacity is 500KVA, or even more.

[0129] For example, the configuration of the main and additional low voltage power distribution panels and systems is as follows: Main material handling control panels (No. 1 to No. 10, 58.1 KVA) x 5 + conveyor control panel, 30.0 KVA) = 320.5 KVA, load factor 64%, additional material handling control panels (No. 6 to No. 8, 59.9 KVA) x 3 = 179.7 KVA, load factor 36%, so the control panels are 320.5 KVA + 179.7 KVA = 500.2 KVA, with a maximum current of 1718 A, alarm current of 1350 A, load capacity of 363 kW, and load factor of 79%.

[0130] For example, this flow is as follows: Main distribution boards No. 1 to No. 6 320.5 KVA → Additional distribution boards No. 7 to No. 9 179.7 KVA → Total of distribution boards 500 → Maximum current 1718 A → Alarm current 1,350 A → Load capacity 393 KW → Load factor 79%.

[0131] The Tr1.3φ500kVA overcurrent protection thermal relay of the low voltage power panel No.1 is installed on the secondary side of the 1500 / 5A CT of the corresponding circuit. For example, a 4.5A thermal relay will provide an alarm current of 1350A, regardless of the maximum load rate of 79%. For example, for the purpose of efficiency depending on the operating conditions, the main distribution board capacity of the above-mentioned low voltage lighting and power distribution board is 320.5KVA + additional distribution board capacity for spare use is 179.7KVA, resulting in an electrical capacity of 500.0KVA and a load rate of 100%. However, the electrical equipment is The demand rate for both lighting and power is not always 100%; it is usually around 70-80% for lighting and 65-75% for power, and even with the equipment contents in which the capacity of the additional distribution board has been increased to a load rate of 100%, it is unlikely that the power consumption will be 100%. However, depending on the operating status of the terminal equipment, it may exceed the load equipment capacity of 393 kW and load rate of 79% for the alarm current of 1350A, reaching the maximum load rate of 100% with a maximum current of 1718A and a TR capacity of 500KVA, resulting in a TR capacity of 500KVA.

[0132] The capacity of the power TR1 of the alarm current alarm type in the DSFCO system is 500KVA, the maximum current is 1718A, the alarm load current for overload prevention is 1350A, and proportionally the TR load equipment capacity 393KW is entered as a database. For example, a CT ammeter installed on the electric light TR detects whether the detected current is below or exceeds the alarm load current of 1350A due to safety protection overcurrent, etc., and if it exceeds, for example, the alarm load current is set as a caution current, and the relevant person's PC, tablet, smartphone, etc. is notified by sending an alert of voice, numerical value, image, etc., such as the customer name, building name, facility name, location, electric light, type of power, capacity, electrical equipment of the system terminal, load equipment name, etc. In addition, the alert ringtone and image display based on the image information can be continuously sent until the relevant person confirms and resets, preventing the relevant person from missing the confirmation.

[0133] When the detection current rises above, for example, the caution current of 1350A, the preset alarm cutoff coefficient is, for example, 1.10 alarm cutoff current = (Caution alarm current 1350A x alarm cutoff coefficient 1.10) = 1485A, and the maximum current load coefficient of the maximum current of 1718A = (alarm cutoff current 1485A / maximum current 1718A) = 0.86. With a surplus rate of 14%, the alarm cutoff current of, for example, 158 If it is 5A, it will automatically shut off at automatic shutoff current = (detection current 1585A) - (alarm shutoff current 1485A) = 95A, and for the relevant equipment capacity, the automatic shutoff capacity is 27.6KVA and it will automatically shut off at an automatic shutoff rate of 6.0%. The order in which the terminal load equipment, electrical equipment, etc. of the relevant main distribution board and additional distribution board are shut off can be determined, and the terminal load equipment, electrical equipment, etc., as well as the relevant boards, circuits, etc., can be automatically shut off so that there is no problem if they are shut off.

[0134] For example, this flow is as follows: Electric light TR1 capacity 500KVA → Maximum current 1718A → Alarm load current 1,350A → Load equipment capacity 393KW → Alarm load current below or exceeding 1350A → Caution alarm current 1350A → Alarm shutoff coefficient 1.10 → Alarm shutoff current 1485A → Maximum current load coefficient 0.86 → Surplus rate 14% → Alarm shutoff current 1,485A → Detection current 1,585A → Automatic shutoff current 95A → Automatic shutoff equipment capacity 27.6KVA → Automatic shutoff rate 6.0%.

[0135] The DSFCO system sends alerts of the above-mentioned automatic shutoff to the relevant parties' PCs, tablets, smartphones, etc., including the customer name, building name, low-voltage distribution board, distribution board, control panel, circuits, etc., as well as audio, images, temperature values, etc. to terminal electrical equipment, terminal load equipment, etc., and continues to send alerts until the relevant parties confirm the image display based on the alert transmission and image information, allowing the relevant parties to check safety in real time after the relevant automatic shutoff and take any subsequent action.

[0136] The automatic shutoff in the DSFCO system can be, for example, a form in which products, production, etc., logistics centers, large freezers, refrigerators, etc., lighting, elevators, etc. in commercial facilities where many people gather, terminal buildings, hotels, etc., by computer programs such as AI and IoT, data centers for important data, research and test results, etc., infrastructure substations, etc., various facilities and electrical equipment, etc. in transportation facilities such as trains and ships, terminal equipment, etc., program control, shutdown, etc. of the relevant terminal equipment, electrical equipment, etc. can be automatically shut off by a predetermined program. In this case, in the DSFCO system consisting of distribution boards, distribution boards, control boards, main lines, circuits, breakers, etc., remote devices, etc. for each system, cloud servers, LANs, etc., the remote devices for each system, the relevant distribution boards, distribution boards, control boards, etc. send signals to protection stop devices by emergency response protection program, and the control, etc., or selected terminal equipment, etc. can be shut down by a program to protect safety. The device can be configured to have a functional control means for stopping the device normally and safely, and also to have a function for checking the stop signal.

[0137] When the detection current detected by the CT of a power TR of the alarm current alarm type rises above the caution alarm current of 1350A and the alarm cutoff coefficient of the caution alarm current of 1350A, which is arbitrarily set in advance, is 1.10, the automatic cutoff current = (1350A x 1.10) = 1485A or more can be automatically cut off.

[0138] The capacity of the caution current safety type power TR1 is 500KVA, the maximum current is 1718A, the alarm load current for overload prevention is 1350A, and the proportional TR load equipment capacity of 393KW is input as a database. For example, a CT ammeter installed in the electric light TR detects an alarm current excess due to an overcurrent for safety protection, and the alarm load current of 1350A is arbitrarily preset, for example, with a caution current coefficient of 0.96, so that the caution alarm current = (alarm load current 1350A x caution current coefficient 0.96) = 1296A, and the safety level is high, the load rate of the corresponding TR is reduced, and the relevant person's PC, tablet, smartphone, etc. is notified by sending an alert of the relevant information, for example, customer name, building name, facility name, location, electric light, type of power, capacity, electrical equipment of the system terminal, load equipment name, etc., in the form of voice, numerical value, image, etc. In addition, the alert incoming sound and image display based on the image information can be continuously transmitted until the relevant person confirms and resets it, thereby preventing the relevant person from failing to confirm.

[0139] The DSFCO system can be configured so that the detection current increases and the automatic shutoff occurs when the maximum current of 1718A is set to a preset value, for example, a maximum current coefficient of 0.7, and the detection current exceeds a surplus rate of 30%, with the alarm shutoff current being equal to or greater than (maximum current 1718A x maximum current coefficient 0.86) = 1477A. ​​If the detection current is 1610A, the automatic shutoff current = (detection current 1610A) - (alarm shutoff current 1477A) = 133A is automatically shut off. The 133A that will be automatically shut off is converted to the equipment automatic shutoff capacity KVA = (current 133A x voltage 210V x power factor 0.8) / 1000A = 22KVA, so the automatic shutoff equipment capacity is 22KVA, and it will automatically shut off with an automatic shutoff rate of 8.2%.The order of shutoff of the terminal load equipment, electrical equipment, etc. of the relevant main distribution board and additional distribution board can be determined, and it can be configured to automatically shut off the terminal load equipment, electrical equipment, etc., and the relevant boards, circuits, etc. that will not cause any problems if shut off.

[0140] For example, this flow is as follows: Lighting TR1 capacity 500KVA → Maximum current 1718A → Alarm load current 1,350A → Load equipment capacity 393KW → Alarm current excess → CT detection current → Alarm load current 1350A → Caution current coefficient 0.96 → Caution alarm current 1296A → Maximum current coefficient 0.7 → Surplus rate 30% → Alarm cutoff current 1,477A → Detection current 1,610A → Automatic cutoff current 133A → Automatic cutoff equipment capacity 22.0KVA → Automatic cutoff rate 8.2%.

[0141] The DSFCO system sends alerts of the above-mentioned automatic shutoff to the relevant parties' PCs, tablets, smartphones, etc., including the customer name, building name, low-voltage distribution board, distribution board, control panel, circuits, etc., as well as audio, images, temperature values, etc. to terminal electrical equipment, terminal load equipment, etc., and continues to send alerts until the relevant parties confirm the alert transmission and the image display based on the image information, allowing the relevant parties to check safety in real time after the relevant automatic shutoff and take any subsequent action.

[0142] The above-mentioned automatic shutoff in the DSFCO system can be in a form that automatically shuts off, for example, products, production, etc., logistics centers, large freezers, refrigerators, etc., commercial facilities where many people gather, terminal buildings, hotels, etc., lighting, elevators, etc., data centers for important data, research and test results, etc., infrastructure substations, various types of equipment, electrical equipment, etc., such as trains and ships, terminal equipment, program control of electrical equipment, etc., and terminal equipment, etc., using computer programs such as AI and IoT, according to a predetermined program. In this case, in the DSFCO system consisting of remote devices for each system such as distribution boards, switchboards, control panels, main lines, circuits, breakers, etc., as well as cloud servers, LANs, etc., an emergency response protection program is used to have the remote devices for each system, cloud servers, LANs, etc. send a signal to the protective stop device from the relevant distribution boards, switchboards, control panels, etc., and the control equipment, etc. as a whole or selected terminal equipment, etc. is shut down by a safety protection program, allowing the stop function to be controlled normally and safely, and also providing a function to confirm the stop signal.

[0143] When the detection current detected by the CT of a caution current safety type electric light TR rises above the caution alarm current of 1296A and reaches a preset maximum current of 1718A with a maximum current coefficient of 0.86, the automatic cut-off current = (maximum current 1718A x 0.86) = 1477 or more can be automatically cut off.

[0144] DSFCO systems are installed in, for example, building facilities such as complexes, skyscrapers, underground shopping malls, warehouses, logistics centers, factories, etc.; commercial facilities, assembly centers, theaters, hospitals, schools, hotels, offices, apartment complexes, research institutes, data centers, event halls, etc.; outdoor facilities such as power plants, substations, water purification plants, etc.; transportation facilities such as trains and ships, and in order to prevent serious electric shock accidents and secondary electric shock, etc. in electrical equipment substations, low-voltage distribution boards, distribution boards, control panels, terminal equipment, electrical equipment, etc. when electricity is flowing in the event of a fire in a large building or facility.

[0145] The system can be equipped with a means for automatically cutting off the power supplies to control panels, distribution panels, low-voltage distribution panels, etc. in the detection area, for example, the area, section, floor, basement, above ground floor, building, etc., where the fire alarm has detected a fire, via a signal from the disaster prevention panel via a communication line, thereby preventing secondary disasters such as electric shock, short circuits, sparks, etc. due to a fire.

[0146] For example, by selecting in advance firefighting equipment, electrical equipment necessary for safety during evacuation such as emergency broadcasts, emergency exit lights, emergency lighting, mechanical smoke exhaust, emergency elevators, etc., and electrical systems and terminal load equipment that will not be affected even if a fire alarm detects a fire and automatically cuts off the electricity, it is possible to create a system that ensures evacuation safety and is equipped with a means to automatically cut off the above-mentioned lighting and power equipment.

[0147] For example, buildings, outdoor facilities, power generation equipment, substation equipment, electrical equipment, various equipment and devices, cars, trains, ships, airplanes, elevators, etc., and electricity, flame retardant engines, etc., exceeding the numerical values ​​of the design specifications, such as the generation of smoke, heat, flames, etc. due to a fire, for example, in order to protect the functionality of the equipment and prevent accidents, automatic shutdown is performed. For example, products, production, etc. by computer programs such as AI, IoT, etc., and logistics centers, large freezers, refrigerators, etc., and lighting, elevators, etc. in commercial facilities, terminal buildings, hotels, etc. where many people gather, and important When the terminal equipment, such as terminal devices, that control the program, etc. of the relevant terminal equipment, such as electrical equipment, etc., are shut down using a predetermined program, the DSFCO system, which is composed of remote devices for each system, such as distribution boards, control panels, main lines, circuits, breakers, etc., cloud servers, LANs, etc., can be configured to have a means for normally and safely controlling the stop function, and a function for checking the stop signal.

[0148] For example, when a fire alarm goes off, the fire alarm's smoke detector, heat detector, flame detector, etc. detector in the firefighting equipment's disaster prevention panel transmits a signal via a signal line to a remote device and inputs it to the central monitoring server, and the relevant low-voltage lighting / power distribution boards, distribution boards, control boards, etc. of the substation equipment, terminal electrical equipment, terminal load equipment, etc., the relevant boards, control boards, circuits, etc., terminal electrical equipment, terminal load equipment, etc. are pre-programmed to determine whether they can be automatically shut off or not, for example, data centers, server operations, production and manufacturing processes, cash register lines, elevators, emergency lighting, emergency broadcasts, fire extinguishing, smoke exhaust, emergency equipment, etc., and the relevant boards, circuits, etc. are automatically shut off. The system will shut off the power and detect the relevant area detected by the fire alarm, etc., such as a building, floor, fire compartment, evacuation stairs, area, room, etc., and will send an alert of "fire" to the PCs, tablets, smartphones, etc. of those involved, with the relevant information, such as the customer name, building name, facility name, location, TR light, power type, capacity, electrical equipment of the system terminal, cargo equipment name, etc., via email, voice, etc., as well as an image from a digital camera installed on the relevant floor or area location, and will continue to send the information until the relevant people confirm the alert transmission and the image display based on the image information, thereby preventing electrical burn accidents and secondary disasters.

[0149] This flow can be illustrated as follows: Fire alarm goes off → firefighting equipment disaster prevention panel → fire alarm smoke detector, heat detector, flame detector, etc. detector → remote device → central monitoring server → low-voltage lighting / power distribution board, distribution board, control panel, etc. → terminal electrical equipment, terminal load equipment, etc. → circuit automatically shuts off → fire alarm, etc. detects → program → selection → relevant panel, circuit, etc. → fire alarm, etc. detects → building, floor, fire compartment, evacuation staircase, area, room, etc. → fire detected → installed at relevant floor, area location → digital camera image → alert sent → alert sent confirmed → continuous transmission → prevents electrical burnout accidents and secondary disasters.

[0150] This automatic shutoff can also be implemented in the manner and flow described above.

[0151] In the DSFCO system, when a relevant detector in the low-voltage lighting system detects and generates an alarm, for example, smoke, heat, flames, etc. in the third floor area, the signal is received by the fire prevention panel via the communication line, and the signal line of the system connected to the fire prevention panel is connected to a remote device, and the remote device enters the information into the system's server computer via LAN. The relevant information, such as the customer name, building name, facility name, location, floor number, area, etc., as well as the electrical equipment and load equipment name of the system terminal, is sent as an alert in the form of voice, numbers, images, etc. to the PCs, tablets, smartphones, etc. of the relevant parties, and the information is sent continuously until the relevant parties confirm the image display based on the alert transmission and image information, to notify of electrical burn accidents and fire accidents.

[0152] For example, this flow is as follows: Smoke, heat, fire, etc. in the 3rd floor area → detector → detection and alarm → fire prevention panel → remote device → server → alert transmission → confirmation of alert transmission → continuous transmission.

[0153] The DSFCO system can be configured in such a way that, for example, when a relevant detector for smoke, heat, flame, etc. in the 3rd floor area detects and activates an alarm, the signal is received by the fire disaster prevention panel via the communication cable, and input to the server of the system via the remote device and LAN of the system, and the relevant circuits No. 1, No. 2, No. 3, No. 4 of the lighting distribution board No. 3 of the system in the 3rd floor area of ​​the fire alarm are automatically shut off in order to prevent secondary accidents such as the spread of fire and secondary accidents such as electric shock due to secondary accidents such as electrical accidents caused by short circuits, sparks, tracking, etc. in the low-voltage distribution board, distribution board, control board, and system trunk lines, wiring, terminal electrical equipment, terminal load equipment, etc. during a fire.

[0154] An example of this flow is as follows: Smoke, heat, flames, etc. in the 3rd floor area → detector detects and issues an alarm → fire and disaster prevention panel → remote device, LAN → server → fire alarm in the 3rd floor area → lighting distribution panel No. 3 → circuits No. 1, No. 2, No. 3, No. 4 → each panel, main line, wiring, terminal electrical equipment, terminal load equipment, etc. → fire alarm in the 3rd floor area → circuits No. 1, No. 2, No. 3, No. 4 → automatic cutoff → prevents the spread of fire and other secondary disasters caused by short circuits, sparks, tracking, etc. during a fire, and electric shock, etc. resulting in injury or death.

[0155] The DSFCO system automatically shuts off the lighting equipment as a countermeasure against disruptions caused by power cuts to terminal electrical equipment and terminal load equipment of the relevant lighting system, for example, important databases, servers, research data, product production, process inspection equipment, analyzers, lighting in factories, etc., by creating a database of the relationship between current value and operating time to protect the safety of terminal load equipment and electrical equipment, and when an automatic shutdown is performed as described above, an alert is sent in real time to the PCs, tablets, smartphones, etc. of the relevant persons in the form of audio, images and numbers, and the breakers, etc. of the relevant equipment's distribution boards, distribution boards, control panels, main lines, circuits, etc. are controlled by remote devices for each system, etc., via a cloud server, LAN, etc., via an emergency response protection program, so that the remote devices such as the relevant distribution boards, distribution boards, control panels, etc. send a stop signal to the protective stop device to safely and reliably shut down the equipment, and the system can be configured to have a control means for confirming the stop signal.

[0156] For example, remote devices for each system, etc., and remote devices such as the relevant distribution boards, distribution boards, control panels, etc., send an emergency response protection program to a protection stop device via a cloud server, LAN, etc., and a batch or selected terminal equipment, etc., are safely and accurately shut down according to a predetermined program.

[0157] In the DSFCO system, when a relevant detector in the low-voltage power system detects and sends out an alarm, for example, smoke, heat, flames, etc., the signal is received by the fire prevention panel via the communication line, and the signal line of the system connected to the fire prevention panel is connected to a remote device, and the remote device enters the signal into the system server via a LAN. The relevant information, such as the building name, facility name, location, floor number, area, etc., as well as the electrical equipment and load equipment name of the system terminal, is sent as an alert in the form of voice, numbers, images, etc. to the PCs, tablets, smartphones, etc. of the relevant persons, and the alert is sent continuously until the relevant persons confirm the image display based on the alert transmission and image information, thereby notifying them of electrical burn accidents and fire accidents.

[0158] An example of this flow is as follows: Smoke, heat, fire, etc. → detector → detection and alarm → received by fire and disaster prevention panel → signal line connected to remote device → remote device to LAN → alert transmission confirmed → continuous transmission. Effect of the Invention

[0159] According to this invention, it is possible to provide a digital substation fire control system (DSFCO system) that uses a safety temperature coefficient and an alarm cutoff temperature coefficient that are preset for each heat resistance class that is classified according to the heat resistance characteristics of the insulating material used in the transformer that is the subject of monitoring and that is disposed in the middle of each electric circuit from the power source side to the multiple load sides, thereby determining whether or not it is possible to continue the power supply via the transformer that is the subject of monitoring, and if necessary, continues to issue an alarm to the person in charge, and also cuts off the power supply if necessary.

[0160] Furthermore, it is possible to provide the above-mentioned DSFCO system, in which a detector such as a fire alarm detects the occurrence of smoke, heat, flames, etc. in a building in which a monitored transformer or the like is installed, and sends an alert to a fire prevention panel or the like, thereby cutting off the flow of electricity to electric circuits installed in the area in which the occurrence of smoke, heat, flames, etc. is detected, thereby preventing secondary electrical accidents and the like caused by short circuits, sparks, tracking, etc. in low-voltage distribution boards, distribution boards, control panels, system trunk lines, wiring, terminal electrical equipment, terminal load equipment, etc. due to the occurrence of a fire. [Brief description of the drawings]

[0161] [Figure 1] This is a diagram showing part of the outline of the overall configuration of the digital substation fire control system of the present invention. It is a conceptual diagram with some parts omitted to explain the state in which the DSFCO system central device, which is a server device made up of a computer, is connected to the electric lighting transformers and power transformers that are the objects of management and control so that they can exchange information with each other via wired or wireless networks such as the Internet or dedicated lines. [Diagram 2] 2 is a conceptual diagram showing an example of a configuration in which the lighting transformer and the power transformer shown in FIG. 1 are connected to a plurality of load circuits. [Diagram 3] A conceptual diagram with some parts omitted to explain that in the lighting transformer shown in Figure 1, multiple power supply side electric circuits from the power supply side and multiple load side electric circuits leading to multiple loads are electrically connected via electrical equipment arranged within the housing. [Figure 4] A conceptual diagram with some parts omitted to explain that in the power transformer shown in Figure 1, multiple power supply side electric circuits from the power supply side and multiple load side electric circuits leading to multiple loads are electrically connected via electrical equipment arranged within the housing. [Diagram 5] 4 is a diagram showing an example of a distribution board (terminal load equipment) receiving power supply via the low-voltage lighting distribution board shown in FIG. 3. [Figure 6] 5 is a diagram showing an example of a distribution board (terminal load facility) receiving power supply via the low-voltage power distribution board shown in FIG. 4. [Figure 7]7 is a diagram showing an example of a load coefficient of a transformer for the low-voltage lighting switchboard and the low-voltage power switchboard shown in FIG. 5 and FIG. 6. [Figure 8] FIG. 2 is a partially omitted conceptual diagram for explaining an example of a network configuration on the side of a DSFCO system central device in the network configuration shown in FIG. [Figure 9] 9 is a conceptual diagram for explaining a schematic configuration in which control over the first floor lighting distribution board is performed by control using the network configuration shown in FIG. 8. [Figure 10] FIG. 9 is a conceptual diagram for explaining a schematic configuration in which control of the first floor material handling control power panel is performed by control using the network configuration shown in FIG. 8. [Figure 11] FIG. 1 is a diagram illustrating an example of the configuration of a power receiving and transforming facility in a building. [Figure 12] FIG. 13 is a diagram illustrating another example of the configuration of a power receiving and transforming facility in a building. [Figure 13] FIG. 4 is a diagram for explaining an example of data status of a load facility when the system of the present invention is executed. [Figure 14] FIG. 2 is a diagram showing an example of names of a plurality of loads for which the system of the present invention is implemented and an overview of their capacities. [Figure 15] FIG. 13 is a diagram showing another example of names of a plurality of loads for which the system of the present invention is implemented and an overview of their capacities. [Figure 16] FIG. 13 is a diagram showing yet another example of names of a plurality of loads for which the system of the present invention is implemented and an overview of their capacities. [Figure 17] FIG. 4 is a diagram for explaining an example of a data state when automatic current interruption is executed by the system of the present invention. [Figure 18] FIG. 11 is a diagram for explaining another example of the data state when automatic current interruption is executed by the system of the present invention. [Figure 19] FIG. 11 is a diagram for explaining yet another example of the data state when automatic current interruption is executed by the system of the present invention. [Figure 20] FIG. 20 is a diagram showing an example of a plurality of load names and an overview of their capacities in the state shown in FIG. 19. [Figure 21] FIG. 20 is a diagram showing another example of a plurality of load names and their capacity outlines in the state shown in FIG. 19. [Figure 22]20 is a diagram showing still another example of a plurality of load names and their capacity outlines in the state shown in FIG. 19. [Diagram 23] FIG. 11 is a diagram for explaining another example of the data state when automatic current interruption is executed by the system of the present invention. [Figure 24] FIG. 2 is a diagram showing an example of a type and embodiment of a transformer in which the system of the present invention is implemented; [Diagram 25] FIG. 2 is a diagram showing an example of conditions required for a transformer in which the system of the present invention is implemented. [Figure 26] FIG. 13 is a diagram showing an example of other conditions required for a transformer in which the system of the present invention is implemented. [Figure 27] FIG. 11 is a diagram for explaining another example of the data state when automatic current interruption is executed by the system of the present invention. [Figure 28] FIG. 11 is a diagram for explaining another example of the data state when automatic current interruption is executed by the system of the present invention. [Figure 29] FIG. 11 is a diagram for explaining another example of the data state when automatic current interruption is executed by the system of the present invention. [Diagram 30] FIG. 11 is a diagram for explaining another example of the data state when automatic current interruption is executed by the system of the present invention. [Diagram 31] FIG. 11 is a diagram for explaining another example of the data state when automatic current interruption is executed by the system of the present invention. [Diagram 32] FIG. 11 is a diagram for explaining another example of the data state when automatic current interruption is executed by the system of the present invention. [Diagram 33] FIG. 11 is a diagram for explaining another example of the data state when automatic current interruption is executed by the system of the present invention. [Diagram 34] FIG. 11 is a diagram for explaining another example of the data state when automatic current interruption is executed by the system of the present invention. [Diagram 35] FIG. 11 is a diagram for explaining another example of the data state when automatic current interruption is executed by the system of the present invention. [Diagram 36] FIG. 11 is a diagram for explaining another example of the data state when automatic current interruption is executed by the system of the present invention. [Figure 37]FIG. 2 is a conceptual diagram for explaining a schematic configuration in which control is performed for a low-voltage lighting distribution board and a low-voltage power distribution board in the network configuration on the DSFCO system central device side in the network configuration shown in FIG. [Figure 38] FIG. 38 is a conceptual diagram for explaining the schematic configuration of control in a building under the control shown in FIG. 37. [Figure 39] FIG. 2 is a diagram for explaining an example of an alert response function flow of a disaster prevention panel and an alarm panel in the system of the present invention. [Diagram 40] FIG. 1 is a diagram illustrating an example of a network configuration in which power supply is cut off by a system according to the present invention. [Diagram 41] FIG. 13 is a diagram for explaining another example of a network configuration in which power supply is cut off by the system of the present invention. [Diagram 42] FIG. 2 is a diagram illustrating an example of a network configuration for an alarm by the system of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0162] The digital substation fire control system of the present invention, i.e., the DSFCO system, is a system that prevents the occurrence of electrical accidents leading to fires, etc. in an electrical circuit configuration in which a power side circuit from the power source side and a load side circuit toward a load are electrically connected via various electrical devices, etc., prevents the occurrence of accidents that damage the various power / electrical devices / equipment that are the loads to which the load side circuits are connected, and further prevents the occurrence of electrical accidents, etc. due to short circuits, sparks, tracking, etc. in low-voltage distribution boards, distribution boards, control boards, system trunk lines, wiring, terminal electrical equipment, terminal load equipment, etc.

[0163] This DSFCO system includes a transformer detected temperature value acquisition means, a transformer detected current value acquisition means, a safety caution coefficient calculation unit, a safety caution current value calculation unit, a transformer detected current value comparison means, a power supply control means, a transformer temperature comparison means, a power supply cut-off means, a first alarm notification information output means, a second alarm notification information output means, a first confirmation information acquisition confirmation means, and a second confirmation information acquisition confirmation means.

[0164] The transformer detected temperature value acquiring means and the transformer detected current value acquiring means are provided in the middle of each electric circuit from a power source side to a plurality of load sides, and are provided for the transformer to be monitored. That is, the transformer detected temperature value acquiring means and the transformer detected current value acquiring means are provided, for example, near the transformer to be monitored.

[0165] Generally, from the power source side to the multiple load sides, a power source side electric circuit, which is an electric circuit from the power source side, and a load side electric circuit, which is an electric circuit going to the multiple loads, are electrically connected via a power device.

[0166] The power device in this case is, for example, a device that electrically connects a power source side electric circuit from a power source side to a load side electric circuit leading to a plurality of loads via electrical equipment arranged in a housing.

[0167] For example, a power device may have a configuration in which a power supply side electric circuit from a power source and multiple load side electric circuits branching from the power supply side electric circuit and heading toward multiple loads are electrically connected within a housing. In this case, a first electric device is interposed in the power supply side electric circuit within the housing, and a second electric device is interposed in each of the multiple load side electric circuits within the housing. The first electric device interposed in the power supply side electric circuit and the multiple second electric devices interposed in each of the multiple load side electric circuits are both disposed within the housing.

[0168] Such power equipment includes, for example, various substation equipment, switchboards, distribution boards, electric lighting boards, power boards, control boards, remote control device boards, and junction boxes for branch wiring connections of extension cords or wiring between distribution boards and distribution boards and devices / appliances.

[0169] The first electrical device is arranged within the housing that constitutes the above-mentioned power device, and provides an electrical connection between the power source side circuit from the power source side and the load side circuit toward the load, and examples of this include a main breaker and a ground fault circuit interrupter.

[0170] The second electric devices are circuit breakers of a different type from the above-mentioned main breaker, earth leakage breaker, etc. For example, a magnet switch, a power relay, a solid state relay, etc. may be used.

[0171] Examples of the multiple loads to which the load side circuits are directed include power and electrical equipment that operates by receiving power, such as prime movers, elevators, air conditioning equipment, ventilation equipment, lighting equipment, refrigerated and freezer cases, refrigerators and freezers, measuring instruments, computer equipment, surveillance cameras, medical equipment, and communication equipment, and include power and electrical equipment and devices that are deployed and used both inside and outside of buildings, power and electrical equipment and communication equipment and devices that are deployed and used in vehicles and means of transportation such as trains, cars, airplanes, and ships, as well as the outlets to which these are connected.

[0172] These multiple loads are connected to the tip side of each of the multiple electric circuits.

[0173] The transformer to be monitored is disposed, for example, in the middle of each electric circuit constituting the power supply side electric path leading to the above-mentioned power device.

[0174] The transformer detection temperature value acquisition means is provided for the transformer, i.e., is provided in the vicinity of the transformer to be monitored, and acquires a transformer detection temperature value T TThe transformer detection temperature value acquisition means, for example, constantly detects and acquires temperature information of the transformer to be monitored, and converts the detected and acquired temperature information into a transformer detection temperature value T T It is possible to employ a digital transformer temperature sensor that constantly outputs digital information.

[0175] The transformer detection temperature acquisition means transmits a transformer detection temperature value T, which is information on the temperature of the transformer to be monitored, to a computer constituting the digital substation fire control system of the present invention, i.e., the DSFCO system, via a network. T is output as digital information.

[0176] The transformer detection current value acquisition means acquires a transformer detection current value I T The transformer detection current value acquisition means may, for example, constantly detect and grasp the current value, and acquire the transformer detection current value I T A digital type AC instantaneous current detector (Current Transformer) that constantly outputs digital information can be used.

[0177] The transformer detection current value acquisition means transmits, via a network, to a computer constituting the digital substation fire control system of the present invention, i.e., the DSFCO system, a transformer detection current value I, which is a current value flowing through the electric circuit to the transformer to be monitored and is always grasped. T Information regarding this is output digitally.

[0178] The safety caution coefficient calculation unit calculates an alarm temperature value T K The transformer detected temperature value T T The process calculates the safety caution coefficient S using the first formula, which is to subtract the value divided by 1 from 1.

[0179] for example, The alarm temperature value that is preset for each heat resistance class classified according to the heat resistance characteristics of the insulating material used in the transformer being monitored is T K ° C., The transformer detected temperature value of the transformer being monitored, which is acquired by the transformer detected temperature value acquisition means, is T T If °C, The safety precaution factor (S) is calculated by the following first formula: First formula: 1-(T K / T T ) = Safety precaution factor (S) The safety attention current value calculation unit calculates a maximum allowable current value I that is allowed in the transformer being monitored when the safety attention coefficient S calculated by the safety attention coefficient calculation unit is a positive number. M The safety caution current value I is calculated by a second formula in which the ampere (A) is multiplied by the safety caution coefficient S calculated by the first formula for the transformer that is the monitoring target of the safety caution coefficient calculation unit. S The process of calculating the following is performed.

[0180] for example, The maximum allowable current value for the transformer being monitored is I M Ampere (A), {1-(T K / T T )=Safety Attention Factor (S)}>0, then Safety precautions Current value I S is calculated by the second formula: Second formula: I M ×S = Safety precaution current value: I S The transformer detection current value comparison means is configured to compare the transformer detection current value I, which is grasped by the transformer current value acquisition means and flows through the transformer for which the safety caution coefficient (S) has been calculated by the safety caution coefficient calculation unit via the electric circuit. T and the safety caution current value I calculated by the safety caution current value calculation unit. S A process of comparing with is performed.

[0181] The transformer temperature comparison means detects the transformer temperature value T T ° C. and the transformer detection temperature value T T The maximum allowable temperature T that is preset for the heat resistance class that is classified according to the heat resistance characteristics of the insulating material used in the transformer whose temperature is known in °C. M The process is performed to compare it with °C.

[0182] The power supply control means compares the transformer detection current value I T >The above safety precaution current value I S When it is determined that the above-mentioned determination is made, a process for controlling the power supply to the plurality of loads receiving power via the transformer and the electric circuit that are the monitoring target for which the determination was made is performed.

[0183] For example, if the maximum allowable temperature of the transformer to be monitored is 130°C and the maximum allowable current is 1718A (amperes), and the object of the present invention can be achieved by setting the alarm temperature value T K ℃ is 125℃, and the maximum allowable current value I M (Amperes) is 1700A (Amperes), and the transformer detection temperature value T T ℃ is 129℃, transformer detection current value I T If the current is 1000A (amperes), the result is as follows: First formula: 1-(T K ℃ / TT ℃) = 1 - (120℃ / 129℃) = 1 - 0.93 = 0.07 = safety precaution factor S Second formula: I M (Amperes) x Safety Caution Coefficient S = 1700A (Amperes) x 0.07 = 119 = Safety Caution Current Value I S (Amperes) In this case, the transformer detection current value I T (Ampere) = 1600A (Ampere) and safety precautions current value I S The relationship between (ampere) and 119A (ampere) is the transformer detection current value I T (Ampere) = 1000A (Ampere) > Safety Caution Current Value I S Since the output of the power supply is 119A (amperes), the power supply to a plurality of loads receiving power through the monitored transformer and electrical circuit is controlled.

[0184] In this way, the transformer detection temperature value T T ℃ is used, and this is the transformer detection current value I T This is intended to be applied to power supply control based on amperes.

[0185] The above-mentioned control by the power supply control means is performed by the transformer detection current value comparison means. T (Ampere) ≦ the above safety precaution current value I S (amperes) may be determined.

[0186] The transformer detection current value I T (Ampere) ≦ Safety Precautions Current Value I S When the current is judged to be (amperes), the above-mentioned control by the power supply control means is released, and the process of calculating the safety attention coefficient S by the first calculation formula is repeated as described above by the safety attention coefficient calculation unit.

[0187] The power supply cut-off means performs processing to cut off the power supply to the plurality of loads. The power supply cut-off means may be, for example, a circuit breaker interposed in the electric circuit to which power is supplied via the transformer.

[0188] The above-mentioned power supply control by the power supply control means can be executed, for example, by transmitting and outputting respective control information and control signals from the power supply control means provided in a computer constituting the system of the present invention to the power supply cut-off means consisting of a current breaker or the like via a network such as a wired, wireless or dedicated line.

[0189] In addition, when the safety attention coefficient S calculated by the safety attention coefficient calculation unit is not a positive number, that is, {1-(T K / T T If {S)=safety caution coefficient (S)}≦0, the safety caution current value calculation unit calculates the safety caution current value I by the above-mentioned second calculation formula. S As described above, the process does not proceed to the process of calculating the safety attention coefficient S, but the process in which the safety attention coefficient calculation unit calculates the safety attention coefficient S by the first calculation formula is repeated.

[0190] The transformer temperature comparison means detects the transformer temperature value T T ° C. and the transformer detection temperature value T T The maximum allowable temperature T that is preset for the heat resistance class that is classified according to the heat resistance characteristics of the insulating material used in the transformer whose temperature is known in °C. M The process is performed to compare it with °C.

[0191] In addition to the above-mentioned processing, the power supply control means performs the transformer temperature comparison means to compare the transformer detected temperature value T T ℃≧Maximum allowable temperature T M When it is determined that the temperature is within °C, a process is performed to control the power supply to the multiple loads that receive power via the transformer and the electric circuit that are the monitoring targets for which the determination was made.

[0192] For example, if the maximum allowable temperature of the transformer to be monitored is 130°C and the maximum allowable current is 1718A (amperes), and the maximum allowable temperature T M °C is 135 °C, and the transformer detection temperature value T T When the temperature reaches 135℃, the transformer detection temperature value T T ℃=135℃≧Maximum allowable temperature T M ℃ = 135℃, so the transformer detection current value I T (Ampere) and Safety Precautions Current Value I S Even while the power supply control is being performed by the process of comparing the load current (amperes) with the load current (amperes), the power supply control means controls the power supply to the plurality of loads receiving power via the transformers and electric circuits being monitored for which such a determination has been made.

[0193] The transformer temperature comparison means detects the transformer temperature value T T °C<maximum allowable temperature T M ° C., the transformer temperature comparison means detects the transformer temperature value T T ℃≧Permissible temperature T M The control by the power supply control means described above that was activated when it was determined that the temperature was .degree. C. is released, and the process of the safety attention coefficient calculation unit calculating the safety attention coefficient S using the first calculation formula, as described above, is repeated.

[0194] The above-mentioned power supply control by the power supply control means, in any of the power supply controls, can be in a form in which the power supply cut-off means is controlled so as to cut off the power supply to a predetermined one of the plurality of loads receiving power supply in a preset sequence.

[0195] The multiple loads receiving power supply may differ from each other in terms of their power demand, etc. Taking into consideration such factors, it is possible to consider the order in which it is desirable to cut off the power supply to one of the multiple loads from the viewpoint of stable power supply control, and to cut off the power supply to predetermined loads among the multiple loads in sequence according to a predetermined order from such a viewpoint.

[0196] In this case, the transformer detection current value I T (Amperes)>Safety Caution Current Value I S When the power supply control means performs power supply control by determining that the transformer detection current value I T (Amperes) and the above safety precautions current value I S Depending on the magnitude of the difference between the current and the current (amperes), a pre-set order may be put into place.

[0197] That is, "the transformer detection current value I T (Amperes) and the above safety precautions current value I S a predetermined sequence for cutting off the power supply to a predetermined load among a plurality of loads receiving the power supply when the difference between the transformer detection current value I T (Amperes) and the above safety precautions current value I S a predetermined sequence of cutting off power supply to a predetermined load among a plurality of loads receiving power supply when the difference between the transformer detection current value I T (Amperes) and the above safety precautions current value I SThe "predetermined sequence of cutting off power to a given one of the loads receiving power when the difference between the load current (amperes) is between a predetermined maximum and minimum value" may be set to different sequences to provide more preferable power supply control in each case.

[0198] The above-mentioned power supply control by the power supply control means, in either case of power supply control, can be such that, if the load to which the power supply is to be cut off is a load for which automatic power supply cut-off is possible, the power supply cut-off means is controlled to automatically cut off the power supply to the load, and, if the load to which the power supply is to be cut off is a load for which automatic power supply cut-off is not possible, the power supply to the load device control device controlling the load for which automatic power supply cut-off is not possible is cut off, and then the power supply cut-off means is controlled to cut off the power supply to the load for which automatic power supply cut-off is not possible.

[0199] For example, when the load to which the power supply is to be cut off is not capable of automatic power supply cut-off, in order to cut off the power supply via the electric circuit by the power supply cut-off means (the energization circuit breaker) installed in the electric circuit that supplies power to the load device control device that controls the load to which the power supply is not capable of automatic power supply cut-off, command information for causing the power supply cut-off means (the energization circuit breaker) to execute a process of cutting off the power supply via the electric circuit is transmitted and output from the power supply control means of the computer constituting the system of the present invention to the power supply cut-off means (the energization circuit breaker) via a network, and subsequently, in order to cut off the power supply via the electric circuit by the power supply cut-off means (the energization circuit breaker) installed in the electric circuit that supplies power to the load to which the power supply is not capable of automatic power supply cut-off, command information for causing the power supply cut-off means (the energization circuit breaker) to execute a process of cutting off the power supply via the electric circuit is transmitted and output from the power supply control means of the computer constituting the system of the present invention to the energization circuit breaker via a network.

[0200] In any of the above-mentioned power supply controls by the power supply control means, as described above, the transformer detection current value comparison means compares the transformer detection current value I T (Ampere) ≦ the above safety precaution current value I S (ampere) can be made to continue until it is determined that the

[0201] In addition to carrying out the above-mentioned processing, the power supply control means When a fire alarm installed in the building where the transformer is installed and detects smoke, heat, or flames and issues an alarm, the fire and disaster prevention panel installed in the building receives an alarm, The device can be configured to execute a process for controlling the power supply cut-off means so as to cut off the power supply to the load installed in the area where the fire alarm that has activated is installed and / or to a plurality of loads installed in the building.

[0202] The first alarm notification information output means outputs the transformer detection current value I T (Amperes)>Safety Caution Current Value I S (ampere), A process is performed in which first alarm notification information is output to a terminal owned by a person in charge of managing the load to which power is supplied via the electrical circuit in which the transformer to be monitored is installed, together with information identifying the load.

[0203] The first confirmation information acquisition confirmation means performs a process of monitoring whether confirmation information confirming that the first alarm notification information has been acquired is returned from the person in charge terminal that received the output of the first alarm notification information.

[0204] The first alarm notification information output means performs the above-mentioned processing and also performs processing of continuing to output the first alarm notification information to the person in charge terminal until the first confirmation information acquisition confirmation means confirms the return of the first confirmation information.

[0205] The second alarm notification information output means is The transformer temperature comparison means detects the transformer temperature value T T ℃≧Maximum allowable temperature T M When it is determined that the temperature is ℃, A process is performed in which second alarm notification information is output, together with information identifying the load, to a terminal owned by a person in charge of managing the load to which power is supplied via the electrical circuit in which the transformer to be monitored is installed.

[0206] The second confirmation information acquisition confirmation means performs a process of monitoring whether confirmation information confirming that the second alarm notification information has been acquired is returned from the person in charge terminal that received the output of the second alarm notification information.

[0207] The second alarm notification information output means performs the above-mentioned processing, and also performs processing of continuing to output the second alarm notification information to the person in charge terminal until the second confirmation information acquisition confirmation means confirms the return of the second confirmation information.

[0208] The above-mentioned first alarm notification information and second alarm notification information are transmitted and output to the person in charge terminal from the above-mentioned first alarm notification information output means and second alarm notification information output means in the computer constituting the system of the present invention via a wired or wireless network.

[0209] The above-mentioned first confirmation information acquisition confirmation means and second confirmation information acquisition confirmation means are provided in a computer constituting the system of the present invention, and when confirmation information confirming that the first alarm notification information has been acquired and confirmation information confirming that the second alarm notification information has been acquired are returned from the person in charge terminal via the above-mentioned network, they confirm that the person in charge has acquired the first alarm notification information and the second alarm notification information.

[0210] In response to this type of processing performed by the first confirmation information acquisition confirmation means and the second confirmation information acquisition confirmation means, the above-mentioned first alarm notification information output means and second alarm notification information output means are configured to perform processing to continue outputting the first alarm notification information and the second alarm notification information to the person in charge terminal until the first confirmation information acquisition confirmation means and the second confirmation information acquisition confirmation means can confirm a return of the confirmation information.

[0211] The insulating materials used in transformers (TR) include insulating oil, SF6 gas, kraft paper, pressboard, mica, glass fiber, epoxy resin, silicon resin, alkyd resin, etc. Taking into consideration the heat resistance characteristics of the insulating materials used, each transformer (TR) has a set maximum allowable temperature and maximum allowable current.

[0212] For example, the maximum allowable temperature for a transformer (TR) with Class A insulation, which is made of insulating materials such as cotton, silk, kraft paper, and pressboard that are impregnated with varnish or reinforced with insulating oil, is 105°C.

[0213] The maximum allowable temperature for a transformer (TR) with Class E insulation, which is made of materials that can withstand a maximum allowable temperature of 120°C, such as polyester film or mica paper, is 120°C.

[0214] The maximum allowable temperature for a transformer (TR) with Class B insulation, which is made of inorganic material solidified with adhesive, is 130°C.

[0215] The maximum allowable temperature for a transformer (TR) with Class F insulation, which is made of Class B insulation material and more heat-resistant adhesives, silicone resins, and alkyd resins, is 155°C.

[0216] The maximum allowable temperature for a transformer (TR) with H-class insulation, whose inorganic material is silicone resin (or a resin with equal or greater heat resistance than silicone resin), is 180°C.

[0217] In this way, the above-mentioned maximum allowable temperatures are set for each heat resistance class (Class A insulation, Class E insulation, Class B insulation, Class F insulation, Class H insulation) which is classified according to the heat resistance characteristics of the insulating material used in each transformer (TR).

[0218] In addition, corresponding to each of the above-mentioned maximum allowable temperatures, a maximum allowable current value that can flow through each transformer (TR) via an electric circuit is set for each heat resistance class (A type insulation, E type insulation, B type insulation, F type insulation, H type insulation) which is classified according to the heat resistance characteristics of the insulating material used in each transformer (TR).

[0219] In this embodiment, from the viewpoint of performing a safe and stable power supply control, the above-mentioned maximum allowable temperature is taken into consideration for each heat resistance class classified according to the heat resistance characteristics of the insulating material used in each transformer (TR), and a maximum allowable temperature T M °C is preset.

[0220] In order to achieve safer and more stable power supply control, the maximum allowable temperature T M The alarm temperature value T is lower than ℃ K ° C. are preset for each heat resistance class which is classified according to the heat resistance characteristics of the insulating material used in each transformer (TR).

[0221] Furthermore, in this embodiment, from the viewpoint of performing safe and stable power supply control, the above-mentioned maximum allowable current value is taken into consideration for each heat resistance class classified according to the heat resistance characteristics of the insulating material used in each transformer (TR), and a maximum allowable current value I, which is a current value smaller than the above-mentioned maximum allowable current value, is set. M The ampere (A) is preset.

[0222] The maximum allowable temperature T M ℃, alarm temperature value T K ℃, maximum allowable current I MThe respective values ​​of amperes (A) can be set to appropriate values ​​for each of the types A, B, E, F, and H of the transformers to be monitored, taking into consideration the above-mentioned maximum allowable temperature and maximum allowable current values ​​of each of the types A, B, E, F, and H, within the scope that allows the object of the present invention to be appropriately achieved.

[0223] The computer constituting the system of the present invention stores in its memory a maximum allowable temperature T that is preset for each of the heat resistance classes A, B, E, F, and H, which are classified according to the heat resistance properties of the insulating material used in the transformers to be monitored, in association with information identifying each transformer to be monitored. M Information about ℃ and the alarm temperature value T K Information about °C and the maximum allowable current I M Information regarding the current, amperage (A) and current consumption is recorded for each transformer being monitored.

[0224] In an embodiment of the present invention, when the safety caution coefficient S calculated by the safety caution coefficient calculation unit is a positive number, a safety caution current value calculation unit provided in a computer constituting the system of the present invention calculates a maximum allowable current value I M (amperes) by the safety caution coefficient S calculated by the first calculation formula for the transformer that is the monitoring target of the safety caution coefficient calculation unit. S When executing the process of calculating the maximum allowable current value I (amperes), M (amperes) will be referred to.

[0225] A safety caution coefficient calculation unit provided in a computer constituting the system of the present invention calculates an alarm temperature value T KThe transformer detected temperature value T T When the process of calculating the safety caution coefficient S by the first calculation formula, which is to subtract the value obtained by dividing by 1 from 1, is executed, the above-mentioned warning temperature value T K °C will be referenced.

[0226] The transformer temperature comparison means provided in the computer constituting the system of the present invention detects the transformer temperature value T T ° C. and the transformer detection temperature value T T The maximum allowable temperature T that is preset for the heat resistance class that is classified according to the heat resistance characteristics of the insulating material used in the transformer whose temperature is known in °C. M When the process of comparing the maximum allowable temperature T M °C will be referenced.

[0227] The digital substation fire control system of the present invention is composed of a computer such as a server computer, and various electric devices connected to this computer via a network such as a wired, wireless, or dedicated line network.

[0228] Although not shown, the computer is equipped with a CPU that performs control so that the various functions of the system of the above-mentioned embodiment are realized in accordance with an operating system or a specific computer program that has been installed or downloaded, a ROM that stores the operating system and various computer programs, etc., and serves as a storage unit for storing data necessary for the CPU to execute processing for each control, a RAM and a hard disk that store data necessary for the CPU to execute processing and are also used as a work area where information is appropriately rewritten by the CPU, and information input / output units such as a communication interface, and the like, all of which are connected by the necessary bus lines.

[0229] The storage unit of the computer constituting the digital substation fire control system of the present invention stores information and computer programs necessary for implementing the above-mentioned functions of the digital substation fire control system of the present invention. The stored information includes, for example, the following information:

[0230] Information about the transformers being monitored is stored. For example, information necessary to identify the transformer to be monitored, the location where the transformer to be monitored is installed, information on the electric circuit in which the transformer is installed, the classification of the transformer to be monitored (type A, type B, type E, type F, type H), the maximum allowable temperature T of the transformer to be monitored, etc. M Information on ℃, alarm temperature value T K Information on ℃, maximum allowable current value I M Information regarding amperes (A) and the like is stored in the memory unit of a computer that constitutes the digital substation fire control system of the present invention.

[0231] Information regarding a plurality of loads to which power is supplied via an electrical circuit in which the monitored transformer is installed is stored in the memory unit of a computer that constitutes the digital substation fire control system of the present invention.

[0232] For example, the name, type, and power consumption of the load, information necessary to identify each load, information regarding the relationship between each load and the transformer installed in the electrical circuit that supplies power to the load, information regarding the circuit breaker installed in the electrical circuit, information regarding whether the load is capable of automatically cutting off the power supply, and information regarding the load device control device that controls the load when the load is not capable of automatically cutting off the power supply.

[0233] Information regarding the building in which the monitored transformer is installed and deployed is stored in the memory unit of a computer that constitutes the digital substation fire control system of the present invention.

[0234] For example, information on the building name, structure, the location where the monitored transformer is installed in the building, information on the locations where multiple loads that receive power via the electrical circuit in which the monitored transformer is installed in the building are installed, information on the fire alarms installed in the building and their locations, information on the fire and disaster prevention panels installed in the building and their locations, etc.

[0235] The transformer detection temperature value T T Information on the means of acquiring the transformer detection temperature value, which is used to grasp the temperature in °C, and the transformer detection current value I, which is the current value flowing through the electric circuit in the transformer being monitored. T Information relating to the transformer detection current value acquisition means for grasping the current (amperes) is stored in the memory unit of the computer constituting the digital substation fire control system of the present invention.

[0236] For example, information for identifying each transformer detection temperature value acquisition means, information regarding the location where each transformer detection temperature value acquisition means is installed and disposed, information regarding the relationship of each transformer detected temperature value acquisition means to each transformer monitored by each transformer, etc. Also, information for identifying each transformer detection current value acquisition means, information regarding the location where each transformer detection current value acquisition means is installed and disposed, information regarding the relationship of each transformer detected current value acquisition means to each transformer monitored by each transformer, etc.

[0237] Furthermore, information regarding the persons in charge of managing each of the multiple loads to which power is supplied via the electrical circuit in which the monitored transformer is installed is stored in the memory unit of the computer that constitutes the digital substation fire control system of the present invention.

[0238] For example, this may include the name of the person in charge, their affiliation, and information regarding the means of contact and contact details via the network when contacting or providing information to the person in charge. The digital substation fire control system of the present invention, i.e., the DSFCO system, which is composed of a computer as described above, is equipped with a safety caution coefficient calculation unit, a safety caution current value calculation unit, a transformer detection current value comparison means, a power supply control means, a transformer temperature comparison means, a first alarm notification information output means, a second alarm notification information output means, a first confirmation information acquisition confirmation means, and a second confirmation information acquisition confirmation means, which perform the above-mentioned processing operations.

[0239] The transformer detected temperature value acquisition means and transformer detected current value acquisition means constituting the above-mentioned DSFCO system are both arranged in the middle of each electric circuit going from the power source side to the multiple load sides and are arranged for the transformer to be monitored. That is, they are arranged near the transformer to be monitored and transmit the transformer detected temperature value T T or a transformer detection current value I, which is a current value flowing through the electric circuit to the transformer to be monitored. T Information regarding this is output in digital form.

[0240] Furthermore, the power supply cutoff means constituting the above-mentioned DSFCO system is, for example, a current-carrying circuit breaker interposed in the electric circuit to which power is supplied via the transformer, and receives control information and control signals from the power supply control means provided in the computer constituting the system of the present invention via a network such as a wired, wireless, or dedicated line, and performs processing to cut off the power supply to the multiple loads.

[0241] In the DSFCO system of the present invention, the safety caution coefficient calculation unit, safety caution current value calculation unit, transformer detected current value comparison means, power supply control means, transformer temperature comparison means, first alarm notification information output means, second alarm notification information output means, first confirmation information acquisition and confirmation means, which are provided in a computer such as a server computer device, perform the above-mentioned processing under a predetermined computer program, and acquire information via a wired or wireless network provided between the above-mentioned transformer detected temperature value acquisition means, transformer detected current value acquisition means, and power supply cutoff means and the server computer device, and also send power control information and instructions to the power supply cutoff means, thereby executing the above-mentioned processing operations of the DSFCO system.

[0242] The above-mentioned staff terminal can be configured as a mobile terminal such as a smartphone on which an application for operating the system of the present invention is downloaded.

[0243] The person in charge terminal is connected to a computer system including a server computer and the like constituting the digital substation fire control system of the present invention via a communication network such as the Internet or a dedicated line so as to be able to exchange information with each other.

[0244] The above-mentioned safety caution coefficient calculation unit, safety caution current value calculation unit, transformer detection current value comparison means, power supply control means, transformer temperature comparison means, first alarm notification information output means, second alarm notification information output means, first confirmation information acquisition confirmation means, second confirmation information acquisition confirmation means, etc. do not all need to be configured to be provided in one device or equipment.

[0245] For example, a device or equipment having some of these configurations may be installed in an electric power device, and this device or equipment may be installed away from the electric power device and connected to other devices or equipment consisting of a computer having other configurations so that they can communicate with each other via a wired or wireless network.

[0246] Alternatively, a device or equipment having some of the above-mentioned configurations may be installed in the power device, and this may be installed away from the power device and connected to other devices or equipment consisting of a computer having some of the other configurations, and other devices or equipment consisting of a computer having the remaining parts of the other configurations, so that they can communicate with each other via a wired or wireless network.

[0247] In the above, the configuration may include a server computer installed on the cloud among one or more other devices or equipment that are deployed away from the power device, connected via a wired or wireless network, and have some or the remaining configurations of the other configurations described above. The present invention is not limited to the above-described embodiment, and various modifications can be made within the technical scope understood from the description of the claims.

Claims

1. Transformers that are installed in the middle of each electric circuit going from the power source to multiple loads and are subject to monitoring; A transformer sensed temperature value T Ｔ A transformer detection temperature value acquisition means for acquiring the temperature in degrees Celsius; A transformer detection current value I, which is a current value flowing through the electric circuit to the transformer being monitored. Ｔ A transformer detection current value acquisition means for grasping the current (amperes); The alarm temperature value T is preset for each heat resistance class classified according to the heat resistance characteristics of the insulating material used in the transformer being monitored. Ｋ ° C. for the transformer detected temperature value T Ｔ a safety attention coefficient calculation unit that calculates a safety attention coefficient S by a first calculation formula of dividing the temperature by ° C. and subtracting the result from 1; When the safety caution coefficient S calculated by the safety caution coefficient calculation unit is a positive number, the maximum allowable current value I Ｍ (amperes) by the safety caution coefficient S calculated by the safety caution coefficient calculation unit using the first calculation formula for the transformer being monitored. Ｓ A safety caution current value calculation unit that calculates the current (amperes); The transformer detection current value I, which flows through the transformer, the safety caution coefficient of which has been calculated by the safety caution coefficient calculation unit, via the electric circuit, and which is grasped by the transformer current value acquisition means. Ｔ (amperes), and the safety caution current value I calculated by the safety caution current value calculation unit Ｓ a transformer sensed current value comparison means for comparing the The transformer detection current value I Ｔ (Amperes)>Safety Caution Current Value I Ｓ a power supply control means for controlling power supply to the plurality of loads receiving power supply via the transformer and the electric circuit that are the monitoring targets for which the determination was made when the power supply is determined to be (amperes); A digital substation fire control system equipped with

2. The transformer detection temperature value T Ｔ ° C. and the transformer detection temperature value T Ｔ The maximum allowable temperature T that is preset for the heat resistance class classified according to the heat resistance characteristics of the insulating material used in the transformer whose temperature is known in °C. Ｍ A transformer temperature comparison means is provided for comparing the temperature with ℃. The transformer temperature comparison means detects the transformer temperature value T Ｔ ℃≧Maximum allowable temperature T Ｍ When it is determined that the temperature is ℃, The power supply control means controls the power supply to the plurality of loads receiving power supply via the transformer and the electric circuit that are the monitoring target for which the determination was made.

2. The digital substation fire control system according to claim 1.

3. The digital substation fire control system includes a power supply cutoff means for cutting off power supply to the plurality of loads, The power supply control by the power supply control means is 3. The digital substation fire control system according to claim 1 or 2, wherein the power supply cut-off means is controlled to cut off the power supply to a specific one of the plurality of loads receiving power supply in a predetermined order.

4. The transformer detection current value I Ｔ (Amperes)>Safety Caution Current Value I Ｓ When the transformer detection current value I Ｔ (amperes) and the safety caution current value I Ｓ 4. The digital substation fire control system according to claim 3, wherein the order is preset according to the magnitude of the difference between the current and the current (amperes).

5. The power supply control means When the load to which the power supply is to be cut off is a load for which power supply can be automatically cut off, the power supply cut-off means is controlled so as to automatically cut off the power supply to the load; When the load to be cut off is one for which automatic power cutoff is not possible, the power supply cut-off means cuts off the power supply to a load device control device that controls the load for which automatic power cut-off is not possible, and then controls the power supply cut-off means to cut off the power supply to the load for which automatic power cut-off is not possible.

4. The digital power receiving / transforming fire control system according to claim 3.

6. The control by the power supply control means is performed by the transformer detection current value comparison means. Ｔ (Ampere) ≦ the safety caution current value I Ｓ 4. The digital substation fire control system according to claim 3, wherein the current is continued until it is determined that the current is equal to or greater than the threshold voltage.

7. The transformer detection current value I Ｔ (Amperes)>Safety Caution Current Value I Ｓ (amperes), a first alarm notification information output means for outputting first alarm notification information together with information identifying the load to a terminal of a person in charge of managing the load to which power is supplied via the electric circuit in which the transformer to be monitored is installed; a first confirmation information acquisition confirmation means for monitoring whether or not confirmation information for confirming that the first alarm notification information has been acquired is returned from the person in charge terminal that has received the output of the first alarm notification information; It also has The first alarm notification information output means continues to output the first alarm notification information to the person in charge terminal until the first confirmation information acquisition confirmation means confirms a return of the first confirmation information.

2. The digital substation fire control system according to claim 1.

8. The transformer temperature comparison means detects the transformer temperature value T Ｔ ℃≧Maximum allowable temperature T Ｍ When it is determined that the temperature is ℃, a second alarm notification information output means for outputting second alarm notification information together with information identifying the load to a terminal of a person in charge of managing the load to which power is supplied via the electric circuit in which the transformer to be monitored is installed; a second confirmation information acquisition confirmation means for monitoring whether or not confirmation information for confirming that the second alarm notification information has been acquired is returned from the person in charge terminal that has received the output of the second alarm notification information; It also has The second alarm notification information output means continues to output the second alarm notification information to the person in charge terminal until the second confirmation information acquisition confirmation means confirms a return of the second confirmation information.

8. The digital power receiving / transforming fire control system according to claim 7.

9. The power supply control means When a fire alarm that detects smoke, heat, or flames and issues an alarm in the building in which the transformer is installed sends an alarm to a fire and disaster prevention panel in the building, The power supply cutoff means is controlled so as to cut off the power supply to the load installed in the area where the activated fire alarm is installed and / or the plurality of loads installed in the building.

4. The digital power receiving / transforming fire control system according to claim 3.