Digital substation fire control system

Abstract

The present invention uses a safe temperature coefficient and an alarm cutoff temperature coefficient, set in advance for each heat resistance class classified according to the heat resistance characteristics of insulating materials used in monitored transformers deployed in respective electrical circuits going from a power supply to a plurality of loads, to determine whether power can continue to be supplied through the monitored transformers, continues issuing an alarm to a person in charge when necessary, and cuts off the power supply when necessary. The present invention is deployed in a building in which the transformers are deployed. When an alarm is issued by a fire alarm that senses smoke and / or heat from a fire and issues an alarm, the present invention is deployed to the building or to the load deployed in an area in which the fire alarm issuing the alarm is deployed, cuts off the power supply to the load, and prevents electrical accidents or the like of secondary disasters caused by short circuits, sparks, tracking, or the like in a low-voltage distribution board, a distribution board, a control board, and a trunk line, wiring, terminal electric equipment, terminal load equipment, or the like of a system caused by the occurrence of a fire.

Description

Digital power receiving and transformer fire control system

[0001] This invention relates to a system that prevents electrical accidents that could lead to fires or the like in electric power devices in which a power supply side circuit from the power source side and a load side circuit leading to a load are electrically connected via electrical equipment or the like installed within a housing, and further prevents accidents that could damage various electric power / electrical equipment / devices connected to the load side circuit from occurring.

[0002] The applicant of the present application has named this Digital Electric Safety Control System "Descon" and has already put it into practice (Patent Document 1), which is a system that prevents electrical accidents that could lead to fires when a power supply circuit from the power source side and a load circuit going to a load that operates by receiving power, such as lighting equipment and devices, air conditioning equipment and devices, freezing and refrigeration equipment and devices, or production equipment and devices, are electrically connected via power devices such as substation equipment, distribution boards, panel boards, lighting panels, power panels, control panels, and junction boxes, which are equipped with electrical devices such as main breakers and earth leakage breakers.

[0003] The present applicant has proposed a "Digital Electric Safety Control System" (Patent Document 2) that prevents electrical accidents that could lead to fires in electric power equipment, such as distribution boards, panelboards, lighting panels, power panels, control panels, and junction boxes, where power-side electrical circuits from a power source to loads are electrically connected via electrical devices housed within a housing, and also prevents accidents that could damage various electric power and electrical devices and equipment connected to the load-side electrical circuits. The present applicant has also proposed a "Descon Operation Safety System" (Patent Document 3) that prevents electrical accidents that could lead to fires by automatically switching on and off each of multiple loads connected to load-side electrical circuits, automatically reading and calculating the amount of power used by the loads, thereby saving labor, and detecting electrical leakage due to loose bolts in bolt-tightened connections in electric power equipment, insufficient insertion into outlets, or the accumulation of debris in bolt-tightened connections.

[0004] Patent No. 6732278 Patent No. 6836234 Patent No. 6991636

[0005] The applicant of the present application has implemented the "Digital Electric Safety Control System" patented in Patent Document 1, naming it "Deathcon," and has evolved the "Digital Electric Safety Control System" of Patent Document 1 to patent the "Digital Electric Safety Control System" of Patent Document 2. Furthermore, the applicant has patented an invention that is an evolution of these, the "Deathcon Operation Safety System," in Patent Document 3. After further study, the applicant has now completed the present invention, the "Digital Substation Fire Control System."

[0006] 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." Means to solve the problem

[0007] The "Digital substation fire control system" of the present invention, i.e., the "DSFCO system," is an invention that is installed midway through each electric circuit from the power source to multiple loads, and 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 transformers that are the subject of monitoring. By using these coefficients, it determines whether it is possible to continue supplying power through the transformers that are the subject of monitoring, and if necessary, continues to issue an alarm to the person in charge, and if necessary, cuts off the power supply.

[0008] Furthermore, when smoke, heat, flames, etc. occur in a building where a monitored transformer or other device is installed, a detector such as a fire alarm will detect the occurrence of such things and send an alert to a fire prevention panel, which will then cut off power to the electrical circuits installed in the area where smoke, heat, flames, etc. are detected, preventing secondary electrical accidents caused by short circuits, sparks, tracking, etc. in low-voltage distribution boards, distribution boards, control panels, and system main lines, wiring, terminal electrical equipment, terminal load equipment, etc. due to the occurrence of a fire.

[0009] The DSFCO system according to the present invention can be exemplified as follows: [1] A DSFCO system according to the present invention includes: a transformer temperature acquisition means for acquiring the temperature of a transformer to be monitored that is disposed midway through each electric circuit leading from a power source to a plurality of loads; a first transformer temperature comparison means for comparing a monitored transformer safety factor temperature, which is a numerical value obtained by multiplying the temperature of the transformer acquired by the transformer temperature acquisition means by a safety temperature factor that is preset for each heat resistance class that is classified according to the heat resistance characteristics of the insulating material used in the monitored transformer, with a preset safety caution temperature; a first alarm notification information output means for outputting first alarm notification information together with information identifying the load to a staff terminal owned by a staff member in charge of managing the load to which power is supplied via the electric circuit in which the monitored transformer is disposed, when the first transformer temperature comparison means determines that the monitored transformer safety factor temperature has reached the safety caution temperature; and a confirmation information acquisition confirmation means for monitoring whether confirmation information confirming the acquisition of the first alarm notification information is returned from the staff terminal that has received the output of the first alarm notification information. The first alarm notification information output means continues to output the first alarm notification information to the person in charge terminal until the confirmation information acquisition and confirmation means confirms that the confirmation information has been returned.

[0010] [2] The digital power receiving / substation fire control system of [1] further comprises: a second transformer temperature comparison means for comparing a monitored transformer alarm cutoff temperature, which is a value obtained by multiplying the temperature of the monitored transformer acquired by the transformer temperature acquisition means by an alarm cutoff temperature coefficient that is preset for each heat resistance class classified according to the heat resistance characteristics of the insulating material used in the monitored transformer, with a preset alarm cutoff temperature; and a second alarm notification information output means for outputting, when the second transformer temperature comparison means determines that the monitored transformer safety coefficient temperature has reached the alarm cutoff temperature, second alarm notification information together with information identifying the load to a staff terminal owned by a person in charge of managing the load to which power is supplied via the electric circuit in which the monitored transformer is installed, wherein the confirmation information acquisition confirmation means monitors whether confirmation information confirming that the second alarm notification information has been acquired is returned from the staff terminal that has received the output of the second alarm notification information, and the second alarm notification information output means continues to output the second alarm notification information to the staff terminal until the confirmation information acquisition confirmation means confirms that the confirmation information has been returned.

[0011] [3] The digital power receiving / transforming fire control system of [2], comprising: an automatic power supply cutoff possibility determination means for determining whether the load to which power is supplied via the electric circuit in which the transformer being monitored is installed when the second alarm notification information output means outputs the second alarm notification information is a load to which automatic power supply cutoff is possible; a first power supply cutoff means for cutting off the power supply to the load determined by the automatic power supply cutoff possibility determination means to be able to automatically cut off the power supply; and a second power supply cutoff means for cutting off the power supply to a load device control device controlling the load determined to be unable to automatically cut off the power supply when the automatic power supply cutoff possibility determination means determines that automatic power supply cutoff is not possible, and then cutting off the power supply to the load.

[0012] [4] The digital power receiving and transforming fire control system of [3], further comprising a third power supply cutoff means, which is installed in the building where the transformer is installed and cuts off the power supply to the load or the building where the third power supply cutoff means is installed, when a fire alarm that detects smoke, heat, or flames caused by a fire and sounds an alarm sounds on a fire prevention panel installed in the building.

[0013] <Configuration Example of Digital Substation Fire Control System> An example of the configuration of a digital substation fire control system (hereinafter, sometimes referred to as a DSFCO system).

[0014] The heat resistance characteristics of a transformer in a power receiving and transforming facility are, for example, as follows: In this specification and drawings, "transformer" may be abbreviated as "TR," "power receiving and transforming facility" as "cubicle," and "AC instantaneous current detector" (Current Transformer) as "CT."

[0015] Transformers are classified into the following heat resistance classes according to the heat resistance properties of the insulating material used.

[0016] Insulating materials include 1) insulating oil, 2) SF6 gas, 3) kraft paper, 4) pressboard, 5) mica, 6) glass fiber, 7) epoxy resin, 8) silicone resin, and 9) alkyd resin, and the maximum allowable temperatures for 1) insulating oil through 9) alkyd resin are specified. In addition, the heat resistance class for oil-filled transformers using the above-mentioned various insulating materials is A, while for molded transformers, B, F, and H are applied.

[0017] When used under standard operating conditions, transformers are designed so that the temperature rise limit of the windings (the difference between the winding temperature and the ambient temperature) is not exceeded and the temperature of each part of the insulation does not exceed the maximum allowable temperature of the heat resistance class. However, if the ambient temperature exceeds the maximum value of 40°C or if the transformer is operated under excessive overload, the maximum allowable temperature may be exceeded.

[0018] Since the lifespan of a transformer is most affected by its maximum temperature, prolonged continuous operation above the maximum allowable temperature will shorten the expected lifespan of 30 years. The transformer's environment and configuration, for example, should be used at an altitude of 1,000 m or less; ambient temperature: indoors: -5°C to +40°C; outdoors: -20°C to +40°C; the daily average temperature should not exceed 35°C, and the annual average temperature should not exceed 20°C; circuit voltage waveform: the voltage waveform of the circuit to which the transformer is connected should be approximately sinusoidal; voltage balance of the three-phase circuit: the three-phase circuit to which the three-phase transformer is connected should be approximately balanced.

[0019] The reference winding temperature is determined as a reference temperature for calculating characteristic values ​​such as load loss and short-circuit impedance, since the resistance value changes depending on the temperature of the winding.

[0020] The heat resistance class and temperature of insulating materials for 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) for dry-type transformers.

[0021] The reference winding temperature is determined as a reference temperature for calculating characteristics such as load loss and short-circuit impedance, since the resistance value changes depending on the winding temperature.

[0022] The boiling point of insulating oil in 6kV oil-filled distribution transformers (JIS C 4303 1999), oil-filled reactors (JIS 4902 2003), and 6kV molded distribution transformers (JIS C 4306) is said to be approximately 290°C to 340°C.

[0023] The automatic shutdown of the distribution board, circuits, terminal electrical equipment, and load equipment of the system based on the voltage, TR capacity, thermal relay, circuit current, and equipment capacity of the building's power receiving and transforming equipment, for example, three lighting transformers (TR) and four power transformers (TR), and the detected temperature, is carried out, for example, as follows.

[0024] For example, in a 200kVA electric lighting TR and low-voltage lighting distribution panel system, the main distribution panel No. 1 (25.0kVA x 4) + No. 5 (20kVA) + No. 6 (25.0kVA) and expansion No. 7 (27.5kVA) + No. 8 (27.5kVA) are configured, for a main distribution panel capacity of 145kw + expansion distribution panel 55kw = distribution panel capacity of 200kVA. The maximum current is 952A and the safety thermal relay alarm current is 780A. Proportionally, the TR load equipment capacity is 164kw, with a load factor of 82%. The capacity of the main and expansion distribution panels is 200kVA, which is 100% of the TR capacity of 200kVA, but the thermal relay load equipment capacity is 164kVA, with a load factor of 82%.

[0025] That is, the electric lighting TR equipment capacity is 200 KVA, maximum current is 952 A, alarm current is 780 A, main + additional distribution board capacity is 200 KVA, load equipment capacity is 164 KVA, and load rate is 82%.

[0026] As mentioned above, the maximum current of the lighting transformer Tr1.1φ200kVA is 952A, and the low-voltage lighting distribution panel for the No. 1 system is the first floor lighting distribution panel No. 1 to No. 6 main distribution panel 145.0kVA, load factor 73%, expansion distribution panel 55kVA, surplus factor 27%, with a maximum load factor of 100% for the main and expansion distribution panel.

[0027] However, the total of the 145 KVA main distribution board and 55.0 KVA additional distribution board in the above-mentioned low-voltage lighting panel system is 200 KVA, and the current value is 952 A. As described above, the demand operating rate of the lighting equipment is 70 to 75%, with capacity = (200 KVAX x 70% to 75%) = 140 KVA to 150 KVA, and operating demand current A = (maximum current 952 A x 70% to 80%) = approximately 667 A to 762 A, which, working backwards, gives a margin (surplus rate) of approximately 30% to 20%.

[0028] By adding terminal load equipment to a low-voltage lighting distribution panel with a capacity exceeding 100% of the power capacity or the system terminal load equipment, the distribution panel for the equipment in question will be added to the main distribution panel.When the terminal load equipment is operated by adding a main distribution panel that is 100% of the TR's capacity of 200KVA and maximum current of 952A, or by adding a main distribution panel that exceeds 100%, the TR capacity of 200KVA may be exceeded and the maximum allowable temperature of insulation type A, 105°C, may be exceeded.

[0029] That is, the lighting transformer Tr is 200kVA, the maximum current is 952A, the main distribution board is 145KVA, the load factor is 73%, the load equipment capacity is 55KVA, the surplus rate is 27%, the main distribution board is 145KVA and the additional distribution board is 55.0KVA, for a total of 200KVA, the current value is 952A, the demand operating rate is 70-75%, the operating demand current A = (maximum current 952A x 70%-80%) = 667A-762A, the surplus rate is 30%-20%.

[0030] The maximum allowable temperatures for each insulation type of lighting transformer with a safe allowable temperature are: A type 105°C, E type 120°C, B type 130°C, F type 155°C, and H type 180°C. The maximum allowable temperatures for the corresponding A to H types are used as a reference to determine whether the temperature detected by the temperature sensor installed in the transformer exceeds the corresponding maximum allowable temperature, or whether the detected temperature is below the maximum allowable temperature. Alternatively, the maximum allowable temperatures for each of the above A to H types may be used as a reference, and a safety temperature coefficient of 0.97 may be arbitrarily set in advance as a safety caution temperature. For example, when a type A transformer detects a safety caution temperature of 102°C, the relevant temperature is detected. An alert is sent to the PC, tablet, smartphone, etc. of the person in charge, including, for example, the customer name, building name, facility name, location, TR light, power type and capacity, and the name of the electrical equipment load equipment at 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, to prevent the person in charge from missing the check. When the detected temperature rises above the safety caution temperature of 102°C, for example, the alarm cutoff temperature coefficient, which is set in advance, is, for example, 1.10, which is an alarm cutoff temperature = safety caution temperature 102°C × alarm temperature coefficient 1.10 = 112.2.

[0031] For example, when the automatic shutdown temperature is 132°C = (detection temperature 132°C - alarm shutdown temperature 112.2°C) = 19.8°C, the automatic shutdown rate = 1 - (alarm shutdown temperature 112.2°C / detection temperature 132°C) = 15%, and the order of shutdown of the terminal load equipment, electrical equipment, etc. of the relevant main distribution board and additional distribution board is determined, and the current value flowing through the relevant TR is reduced by automatically shutting off the relevant distribution board, control panel, circuit, etc., and terminal load equipment, electrical equipment, etc., where there is no "hindrance if it is shut off." This reduces the thermal load of the electrical resistance, and the TR temperature drops in proportion to the current value.

[0032] 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 does not reach 112.2°C, 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 be configured so that even while the system is shutting down due to the program, if the alarm cutoff temperature reaches 112.2°C, the automatic cutoff will stop.

[0033] When the alarm cutoff temperature of 112.2°C is exceeded, for example, when the detected current value at a detected temperature of 132°C is 938A, the DSFCO system can be configured to automatically cut off the detected cutoff current A = (detected current 938A x automatic cutoff rate 15%) = 140.7A at an automatic cutoff temperature of 19.8°C with an automatic cutoff rate of 15%, determining the cutoff order of the relevant main distribution boards, additional distribution boards, terminal load equipment such as circuits, electrical equipment, etc., and cutting off the relevant distribution boards, control panels, circuits, etc., terminal load equipment, electrical equipment, etc. that can be cut off without causing any problems.

[0034] This flow is, for example, as follows: Maximum allowable temperature is Type A: 105°C, Type E: 120°C, Type B: 130°C, Type F: 155°C, Type H: 180°C → Detection temperature: exceeds or is below the maximum allowable temperature → Maximum allowable temperature value: Standard safe temperature coefficient for Type A 105°C: 0.97 → Safe allowable temperature: 102°C → Alarm temperature shut-off coefficient: 1.10 → Alarm shut-off temperature: 112.2°C → Detection temperature: 132.0°C → Automatic shut-off temperature: 19.8°C → Automatic shut-off rate: 15.0% → Shut-off priority → Decrease in current value, decrease in thermal load of electrical resistance → Decrease in TR temperature → Detection temperature: 132°C → Alarm shut-off temperature: 112.2°C → Automatic shut-off program → Alarm shut-off temperature: 112.2°C → Detection temperature: 132°C → Detection current value: 938A → Automatic shut-off temperature 19.8°C → Automatic shut-off rate: 15% → Automatic shut-off current: 140.7A.

[0035] 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 predetermined program.

[0036] This flow is, for example, as follows: Detected temperature 132°C → Detected current 920A → Alarm shutoff temperature 112.2°C → Automatic shutoff temperature 19.8°C → Automatic shutoff rate 15% → Automatic shutoff current 138A.

[0037] The DSFCO system can be configured to automatically shut off the above-mentioned terminal equipment, program control, and shutdown of various terminal equipment, such as products, manufacturing, etc., logistics centers, large freezers, refrigerators, etc., commercial facilities where many people gather, terminal buildings, hotels, etc., data centers for important data, research and test results, etc., infrastructure substations, transportation trains, ships, etc., etc., using computer programs such as AI and IoT, etc., and lighting, elevators, etc. of various facilities, electrical equipment, etc., such as terminal equipment, program control, and shutdown of electrical equipment, etc., using a predetermined program. In this case, the DSFCO system, which is composed of remote devices for each system such as distribution boards, distribution boards, control panels, main lines, circuits, breakers, etc., and a cloud server, LAN, etc., can be configured so that the remote devices for each system, such as the relevant distribution boards, distribution boards, control panels, etc., send a signal to the protection stop device using an emergency response protection program via the cloud server, LAN, etc., to safely protect all or selected terminal equipment such as control devices, etc., and have the function of shutting down by program, and have a means to normally and safely implement and control the stop function, as well as the function of checking the stop signal.

[0038] This automatic shutdown configuration is adopted in all embodiments of the DSFCO system according to the present invention. The flow of this automatic shutdown is, for example, as follows: Terminal devices, etc., for program control, shutdown, etc. → Automatic shutdown by program → Emergency response protection program → Program → Shutdown → Safety and accuracy → Shutdown function control means → Function to confirm the shutdown signal.

[0039] For example, the flow for automatically shutting off the temperature of a safe allowable temperature type electric light TR when the detected current detected by the CT exceeds the safety caution temperature of 102°C and the alarm shutoff coefficient for the pre-set safety caution temperature of 102°C is 1.10 (the alarm shutoff temperature = 102 x 1.10 = 112.2°C) or higher is as follows:

[0040] The maximum allowable temperatures for the insulation types of lighting transformers with alarm tolerance temperatures are Class A: 105°C, Class E: 120°C, Class B: 130°C, Class F: 155°C, and Class H: 180°C. Using the maximum allowable temperatures for the corresponding Classes A to H as a reference, it is determined 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 for each of the above Classes A to H as a reference, when an alarm temperature coefficient of 1.0 is set in advance, for example, the alarm temperature for a Class A TR = Class A maximum allowable temperature 105°C x 1.0 = alarm tolerance temperature 105°C, an alert is sent to the PC, tablet, smartphone, etc. of the relevant person with the relevant information, such as the customer name, building name, facility name, location, TR light, power type and capacity, and the name of the load equipment of the electrical equipment at the system terminal, in the form of voice, numbers, images, etc. Furthermore, the alert ringtone and image display based on the image information can be continuously transmitted until the person concerned confirms and resets, thereby preventing the person concerned from failing to confirm.

[0041] In addition, when the detected temperature rises above the alarm allowable temperature of 105°C, for example, the alarm cutoff temperature coefficient, which is arbitrarily set in advance, is, for example, 1.10, and the alarm cutoff temperature = alarm temperature or allowable maximum temperature 105°C × alarm cutoff coefficient 1.10 = 115.5°C, and the alarm cutoff 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 = 1 - (alarm cutoff temperature 115.5°C / detection temperature 132°C) = 13% is automatically cut off, and the order of cutoff of the terminal load equipment, electrical equipment, etc. of the relevant main distribution board and additional distribution board is determined, and by automatically cutting off the relevant distribution board, control panel, circuit, etc. and terminal load equipment, electrical equipment, etc. that can be cut off without causing any problems, the current value passing through the relevant TR can be reduced, and the TR temperature can be reduced in proportion to the current value due to the reduction in the thermal load of the electrical resistance.

[0042] As described above, even if the DSFCO system automatically shuts off the distribution board, control panel, circuits, etc., terminal load equipment, electrical equipment, etc. of the TR system when the detection temperature is 132°C, if the preset alarm cutoff temperature of 115.5°C is reached, the automatic cutoff program will automatically shut off the relevant distribution board, control panel, circuits, etc., terminal load equipment, electrical equipment, etc. Conversely, if the alarm cutoff temperature reaches 115.5°C even while the system is currently shut down by the program, the system will automatically shut off.

[0043] When the alarm cutoff temperature of 115.5°C is exceeded, for example, when the detected current value is 938A at a detected temperature of 132°C, the DSFCO system can be configured to automatically cut off the detected cutoff current A = (detected current 938A x automatic cutoff rate 13%) = 121.9A at an automatic cutoff temperature of 16.5°C with an automatic cutoff rate of 13%, determining the cutoff order of the relevant main distribution boards, additional distribution boards, terminal load equipment such as circuits, electrical devices, etc., and cutting off the relevant distribution boards, control panels, circuits, etc., and terminal load equipment, electrical devices, etc. that can be cut off without causing any problems.

[0044] This flow is, for example, 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 → Detected 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 shutoff coefficient 1.10 → Alarm shutoff temperature 115.5°C → Detected temperature 132.0°C → Automatic shutoff temperature 16.5°C → Automatic shutoff rate 13.0% → Shutoff priority → Decrease in current value, decrease in thermal load of electrical resistance → TR temperature drop → Detected temperature 132°C → Alarm shutoff temperature 115.5°C → Automatic shutoff program → Alarm shutoff temperature 115.5°C → Detected temperature 132°C → Detected current value 938A → Automatic shutoff temperature 16.5°C → Automatic shutoff rate 13% → Detected shutoff current 121.9A.

[0045] In the DSFCO system, when the detection temperature is 132°C, for example, if the detection current is 920A, the alarm shutoff temperature is 115.5°C, the automatic shutoff temperature is 16.5°C, and the automatic shutoff rate is 13%, so the automatic shutoff current = (detection current 920A x automatic shutoff rate 13%) = 110A.The detection current at the shutoff detection temperature is input, the automatic shutoff current is automatically input, and the system can be configured to automatically shut off using a pre-defined program.

[0046] This flow is, for example, as follows: Detected temperature 132°C → Detected current 920A → Alarm shutoff temperature 115.5°C → Automatic shutoff temperature 16.5°C → Automatic shutoff rate 13% → Automatic shutoff current 110A.

[0047] When the detection current detected by the CT of an electric light TR of the alarm allowable temperature type rises above the allowable alarm temperature of 105°C and the alarm cutoff coefficient for the preset allowable alarm temperature of 105°C is 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.

[0048] The following are examples of embodiments of automatic shutdown of the distribution board, circuits, terminal electrical equipment, and load equipment of a system based on the voltage, TR capacity, thermal relay, circuit current, equipment capacity, etc. of four power transformers (power TRs) in a building's power receiving and transforming equipment, and the detected temperature.

[0049] The DSFCO system is a power plant of TR500KVA, and the low-voltage power distribution panel system includes, for example, permanent distribution panel No. 1 58.1KVAX, No. 6 5-panel + No. 6 30.0KVA, and additional distribution panel No. 7 59.9KVA + No. 8 59.9KVA + No. The configuration is 9, 59.9KVA, with a main distribution board capacity of 320.5kW + additional distribution board 179.7kW = distribution board capacity 500.2KVA, TR capacity 500KVA, maximum current 1718A, the alarm current of the safety protection thermal relay is 1350A, and the load factor is 79%. The capacity of the main + additional distribution boards is 500KVA, which is 100% of the TR capacity of 500KVA, but the load equipment capacity of the thermal relay is 79% of 393KVA.

[0050] This flow is, for example, as follows: Power TR capacity 500 KVA → Maximum current 1718 A → Load factor 79% → Panel capacity 500 KVA → Load equipment capacity 393 KVA.

[0051] As illustrated above, the maximum current of the transformer Tr1.3φ500kVA on low-voltage power panel No. 1 is 1718A, and the low-voltage power distribution panel for system No. 1 is composed of first-floor power distribution panel Nos. 1 to 6, with a main distribution panel capacity of 320.5kVA and a load factor of 64%, and an additional distribution panel capacity of 179.7kVA and a surplus factor of 36%, for a total capacity of 500kVA for the main and additional distribution panels, with a maximum load factor of 100%.

[0052] However, the total of the 320.5 KVA main distribution board and 179.7 KVA additional distribution board in the low voltage power panel system is 500 KVA, and the current value is 1718 A. As described above, the demand operating rate of the lighting equipment is 65% to 75% capacity = 500 KVAX x 65% to 75% = about 325 KVA to 375 KVA, and the operating demand current A = (maximum current 1718 A x 65% to 75%) = about 1116 A to 1288 A, which means that there is a surplus rate of about 35% to 25%.

[0053] Furthermore, by adding terminal load equipment with a capacity exceeding 100% of the power capacity of the low voltage power distribution panel or the system terminal load equipment, the distribution panel for the equipment in question will be added to the main distribution panel, and when the terminal load equipment is operated by adding a main distribution panel that is 100% of the capacity of the TR of 500 KVA and maximum current of 1718 A, or by adding a main distribution panel that exceeds 100%, the TR capacity of 200 KVA may be exceeded, and the maximum allowable temperature of 105°C for insulation type A may be exceeded, for example.

[0054] This flow is, for example, as follows: Distribution board capacity 500 KVA → maximum current 1718 A → demand 65% to 75% → operating margin (surplus) rate 35% to 25%.

[0055] The maximum allowable temperatures for each insulation type of power TR transformer 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. Using the maximum allowable temperatures for the corresponding Type A to Type H as a reference, it is determined whether the temperature detected by the temperature sensor installed in the TR exceeds the corresponding maximum allowable temperature or is below the maximum allowable temperature. Alternatively, using the maximum allowable temperatures for each Type A to Type H as a reference, a safety temperature coefficient of 0.97 is arbitrarily set in advance as the safety caution temperature. For example, when a Type A TR detects = (Type A maximum allowable temperature 105°C x 0.97) = safety caution temperature 102°C, an alert is sent to the PC, tablet, smartphone, etc. of the relevant person with the relevant information, such as the customer name, building name, facility name, location, TR light, power type and capacity, and the name of the electrical equipment load equipment at the system terminal, in the form of voice, numbers, images, etc. The alert ringtone and image display using image information can be continuously transmitted until the person concerned confirms and resets, thereby preventing the person concerned from failing to confirm.

[0056] When the detected temperature rises above the safety caution temperature of 102°C, the alarm cutoff temperature coefficient can be set arbitrarily in advance, for example, 1.10, and the alarm cutoff temperature can be set to 112.2°C.

[0057] For example, when the detected temperature is 132°C, the automatic shutdown temperature = (detected temperature 132°C - alarm shutdown temperature 112.2°C) = 19.8°C, and the automatic shutdown rate = 1 - (alarm shutdown temperature 112.2°C / detected temperature 132°C) = 15%, the order of shutdown of the terminal load equipment, electrical equipment, etc. of the relevant main distribution board and additional distribution board is determined, and by automatically shutting off the relevant distribution board, control panel, circuit, 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 can be reduced, and the TR temperature will decrease in proportion to the current value due to the reduced thermal load of the electrical resistance.

[0058] As described above, even if 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, if the preset alarm cutoff temperature does not reach 112.2°C, 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 so that even while the system is shutting down, the automatic cutoff will stop if the alarm cutoff temperature reaches 112.2°C.

[0059] For example, if the detected current value when the alarm cutoff temperature of 112.2°C is exceeded is 1620A, for example, when the detected temperature is 132°C, the automatic cutoff rate is 18%, and the automatic cutoff temperature is 19.8°C, the cutoff order of the relevant main distribution boards, additional distribution boards, terminal load equipment such as circuits, electrical devices, etc. can be determined, and the relevant distribution boards, control panels, circuits, etc., and terminal load equipment, electrical devices, etc. that can be cut off without causing any problems can be set.If the detected current value is 1620A, for example, the automatic cutoff rate is 18%, and the detected cutoff current A = (detected current 1620A x automatic cutoff rate 18%) = 291.6A can be automatically cut off.

[0060] 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 → Detected temperature: Over maximum allowable temperature, Below maximum allowable temperature → Maximum allowable temperature value: Reference → Safety temperature coefficient 0.97 → Safe allowable temperature 102°C → Alarm temperature shutoff coefficient 1.10 → Alarm shutoff temperature 112.2°C → Detected temperature 132.0°C → Automatic shutoff temperature 19.8°C → Automatic shutoff rate 18.0% → Shutoff priority → Decrease in current value, decrease in thermal load of electrical resistance → TR temperature drop → Detected temperature 132°C → Alarm shutoff temperature 112.2°C → Shutoff temperature program → Detected temperature 132°C → Detected current value 1620A → Automatic shutoff temperature 19.8°C → Automatic shutoff rate 18% → Automatic shutoff current 291.6A.

[0061] In the DSFCO system, for example, if the detection temperature is 132°C and the detection current is 1590A, 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 using a predetermined program.

[0062] This flow is, for example, as follows: Detected temperature 132°C → Detected current 920A → Alarm shutoff temperature 112.2°C → Automatic shutoff temperature 19.8°C → Automatic shutoff rate 18% → Automatic shutoff current 286A.

[0063] This automatic shutoff can also be implemented in the manner and flow described above.

[0064] In a power TR of a safety tolerance temperature type, when the detection current detected by the CT rises above the safety caution temperature of 102°C, an embodiment can be made in which the alarm cutoff temperature is (102.2 x 1.10) = 112.2°C or higher, and the alarm cutoff coefficient for the pre-set safety caution temperature of 102°C is 1.10, and the TR automatically cuts off the temperature.

[0065] 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 a reference, it is determined 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.

[0066] Based on the maximum allowable temperature values ​​of Classes A to H, for example, the alarm temperature coefficient is arbitrarily set in advance as a safety caution temperature. For example, when the alarm temperature of a 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 relevant person's PC, tablet, smartphone, etc., with audio, numerical values, images, etc., including the relevant information such as the customer name, building name, facility name, location, TR light, power type and capacity, and the name of the electrical equipment load equipment of the system terminal. In addition, the alert ringtone and image display using image information can be sent continuously until the relevant person confirms and resets, preventing the relevant person from missing a check.

[0067] When the detected temperature rises above the alarm tolerance 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.

[0068] For example, when the detection temperature is 140°C, the automatic shutdown temperature = (detection temperature 140°C - alarm shutdown temperature 121°C) = 19.0°C, the automatic shutdown rate = 1 - (alarm shutdown temperature 121°C / detection temperature 140°C) = 14%, and the order of shutdown of the terminal load equipment, electrical equipment, etc. of the relevant main distribution board and additional distribution board is determined, and by automatically shutting off the relevant distribution board, control panel, circuit, 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 can be reduced, and the TR temperature will decrease in proportion to the current value due to the reduced thermal load of the electrical resistance.

[0069] 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 preset alarm cutoff temperature does not reach 121°C, 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 121°C is reached.Conversely, the system can be configured so that even while the system is shutting down, if the alarm cutoff temperature of 121°C is reached, the automatic cutoff will stop.

[0070] For example, if the detected current value when the alarm cutoff temperature of 121°C is exceeded, for example, at a detection temperature of 140°C, is 1620A, and the automatic cutoff temperature is 19.0°C and the automatic cutoff rate is 14%, the cutoff order can be determined for the relevant main distribution boards, additional distribution boards, terminal load equipment such as circuits, electrical devices, etc., and the relevant distribution boards, control panels, circuits, etc., terminal load equipment, electrical devices, etc. that can be cut off without causing any problems.If the detected current value is 1620A, for example, the automatic cutoff rate is 14%, and the detected cutoff current A = (detection current 1620A x automatic cutoff rate 14%) = 226.8A.

[0071] This flow is, for example, as follows: If the allowable maximum temperature is A type 105°C, E type 120°C, B type 130°C, F type 155°C, or H type 180°C, then the detected temperature is above or below the allowable maximum temperature, then the allowable maximum temperature value is reference, then the alarm temperature coefficient is 1.0, then the allowable alarm temperature is 105°C, then the alarm temperature shutoff coefficient is 1.15, then the alarm shutoff temperature is 121°C, then the detected temperature is 140.0°C, then the automatic shutoff temperature is 19.0°C, then the automatic shutoff rate is 14.0%, then the shutoff priority is 14.0%, then the current value decreases, then the thermal load of the electrical resistance decreases, then the TR temperature decreases, then the detected temperature is 140°C, then the alarm shutoff temperature is 115.5°C, then the shutoff temperature program is 140°C, then the detected current value is 1620A, then the automatic shutoff temperature is 19.0°C, then the automatic shutoff rate is 14%, then the detected shutoff current is 226.8A.

[0072] In the DSFCO system, for example, if the detection temperature is 140°C and the detection current is 1620A, the alarm shutoff temperature is 115.5°C, the automatic shutoff temperature is 19.0°C, and the automatic shutoff rate is 14%, then the automatic shutoff current = (detection current 1620A x automatic shutoff rate 14%) = 226.8A.The detection current at the shutoff detection temperature is input, the automatic shutoff current is automatically input, and the system can be configured to automatically shut off using a predetermined program.

[0073] This flow is, for example, as follows: Detected temperature 140° C. → Detected current 1620 A → Alarm shutoff temperature 115.5° C. → Automatic shutoff temperature 19.0° C. → Automatic shutoff rate 14% → Automatic shutoff current 226.8 A.

[0074] This automatic shutoff can also be implemented in the manner and flow described above.

[0075] In the case of a power TR of the alarm tolerance temperature type, when the detection current detected by the CT rises above the maximum allowable temperature, and the alarm cutoff temperature is (105 x 1.15) = 121°C or higher, the TR can be configured to automatically cut off at a temperature of 105°C (pre-set alarm tolerance temperature) with an alarm cutoff coefficient of 1.15.

[0076] 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 voltage, TR capacity, thermal relay, circuit current, equipment capacity, etc. of three electric lighting transformers (electric lighting TRs) of a building, and the detected temperature can be implemented, for example, as follows:

[0077] For example, of the three electric lighting transformers (electric lighting TRs) in a building's power receiving and transforming equipment, the capacity of electric lighting TR No. 1, the thermal relay, circuit current, equipment capacity, etc., and the detected temperature and interruption coefficient of the main distribution board can be set as follows:

[0078] The maximum allowable temperatures for the boiling point warning temperature type insulation types are A type 105°C, E type 120°C, B type 130°C, F type 155°C, and H type 180°C, but 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 power receiving and transforming equipment, electric lighting and power TR, or the TR capacity KVA, and the additional capacity etc. depending on the usage status of the system electrical equipment, mechanical equipment, terminal load equipment, etc.

[0079] For example, due to an overload of 200 kVA and a maximum current of 952 A in the No. 1 electric light transformer, or due to abnormally high temperatures such as the outside air temperature in the surrounding environment, the boiling point of the transformer's insulating oil is set to about 290°C to 340°C.

[0080] The DSFCO system can be configured to send an alert of the insulating oil boiling point, for example, a boiling point caution temperature that is arbitrarily determined in advance, for example, (boiling point temperature 290°C x coefficient 0.40 = 116.0°C), to the PCs, tablets, smartphones, etc. of the relevant parties, in the form of audio, numerical values, images, etc., including the relevant information such as the customer name, building name, facility name, location, TR light, power type, capacity, electrical equipment at the system terminal, and load equipment name. Furthermore, the alert can be sent continuously until the relevant parties confirm the image displayed based on the alert and image information, thereby preventing electrical burnout accidents and fire accidents from occurring.

[0081] If the boiling point warning temperature of the lamp transformer exceeds 116°C, the temperature is set arbitrarily in advance for the lamp transformer, for example, the boiling point alarm cutoff temperature = (boiling point temperature 290°C x cutoff coefficient 0.50 = 145.0°C). In addition, a system can be configured to distinguish between arbitrarily set predetermined cases where automatic cutoff is not possible and automatic cutoff is possible. For example, if the detected temperature is 205°C, the automatic cutoff program will automatically cut off the system distribution board, circuits, etc. of the low-voltage distribution board and the terminal load equipment, etc. of the terminal load electrical equipment until the boiling point alarm cutoff temperature reaches 145.0°C, which is the arbitrarily set predetermined boiling point alarm cutoff temperature of 290°C x cutoff coefficient 0.50, and if the boiling point alarm cutoff temperature of 145.0°C is reached even while the boiling point alarm is cut off, the automatic cutoff will stop.

[0082] In the DSFCO system, when the alarm boiling point cutoff temperature of 145.0°C is exceeded, for example, when the detected current value is 950 A at a detected temperature of 205°C, the automatic cutoff temperature = (detected 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, terminal load equipment such as circuits, electrical devices, etc. can be determined, and the relevant distribution boards, control panels, circuits, etc., terminal load equipment, electrical devices, etc. can be automatically cut off when there is no problem by cutting them off, for example, when the detected current value is 950 A, the detected cutoff current A = (detected current 950 A x automatic cutoff rate 29.2%) = 277.4 A.

[0083] For example, this flow is as follows: Maximum allowable temperature → No. 1 electric light TR 200 KVA, maximum current 952 A → Boiling point temperature is approximately 290°C to 340°C → Boiling point caution temperature = (boiling point temperature 290°C x coefficient 0.40 = 116.0°C) → Boiling point caution temperature → Alert transmission → Confirm alert transmission → Continuous transmission → Boiling point caution temperature exceeds 116°C → Boiling point alarm cutoff temperature 145.0°C → Automatic cutoff program → Automatic cutoff → Distinguish whether automatic cutoff is possible → "Detected temperature is 205°C → Boiling point alarm cutoff temperature 290°C x cutoff coefficient 0.50 → Automatic cutoff program → Automatic Shut off → Boiling point alarm shut off → Boiling point alarm shut off → Boiling point alarm shut off temperature 145.0°C → Automatic shutoff stops → Alarm boiling point shutoff temperature 145.0°C → Detected temperature 205°C → Detected current value 1330A → Automatic shutoff temperature = (Detected temperature 205°C - 145.0°C) = 60.0°C → Automatic shutoff rate = (60°C / 205°C) = 29.2% → Shut off priority → No problems with shutting off → Detected current value 950A → Detected shutoff current A = (Detected current 950A x automatic shutoff rate 29.2%) = 277.4A) → Automatic shutoff.

[0084] In the above flow, the detected current may be the upper limit of the maximum current of 952A.

[0085] The boiling point alarm temperature type electric lamp TR can be configured so that when the CT-detected current rises above the boiling point warning temperature of 116°C, and the temperature reaches or exceeds the alarm cutoff temperature of 145°C with a cutoff coefficient of 0.50 for the boiling point alarm cutoff temperature, which is set arbitrarily in advance, the lamp TR will automatically cut off.

[0086] For example, automatic shutdown of the boiling point temperature of the distribution board, circuits, terminal electrical equipment, and load equipment of the system based on the voltage, TR capacity, thermal relay, circuit current, equipment capacity, etc. of four power transformers (power TRs) of a building's power receiving and transforming equipment, and the detected temperature can be implemented as follows.

[0087] Of the four boiling point alarm temperature type power transformers (power TRs), the capacity of power TR No. 1, the thermal relay, circuit current, equipment capacity, etc., and the detection temperature and interruption coefficient of the main distribution board are, for example, as follows:

[0088] In the DSFCO system, the load capacity of the system's low-voltage distribution board, distribution board, circuits, etc., as well as the capacity of the TR in KVA, is added to the surrounding environment of the power receiving and transforming equipment, lighting and power TRs, and the capacity of the TR itself, and additional capacity is added depending on the usage status of the system's electrical equipment, mechanical equipment, terminal load equipment, etc. For example, due to an overload of 500 KVA and a maximum current of 1,718 A for the No. 1 power TR, or an abnormally high temperature such as the outside air temperature in the surrounding environment, the boiling point of the TR's insulating oil is set to be around 290°C to 340°C.

[0089] 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(s) with audio, numerical values, images, etc., including the relevant information such as the customer name, building name, facility name, location, TR light, power type, capacity, electrical equipment at the system terminal, and cargo equipment name. In addition, continuous transmission can be made until the relevant person(s) confirms the image display based on the alert transmission and image information, preventing electrical burnout accidents and fire accidents.

[0090] The DSFCO system can be configured to detect when the boiling point warning temperature of 116°C is exceeded and the predetermined, arbitrarily set boiling point alarm cutoff temperature of the power transformer in question is reached, for example, at a boiling point alarm cutoff temperature of 290°C x coefficient 0.50 = 145.0°C, and to distinguish between cases where automatic shutdown is not possible and cases where automatic shutdown is possible. For example, if the detected 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 predetermined, arbitrarily set boiling point alarm cutoff temperature of 290°C x coefficient 0.50 is reached, which is the boiling point alarm cutoff temperature of 145.0°C. Conversely, the system can be configured so that even while the boiling point alarm is shut off, the automatic shutdown will stop if the boiling point alarm cutoff temperature of 145.0°C is reached.

[0091] In the DSFCO system, when the alarm boiling point cutoff temperature of 145.0°C is exceeded, for example, when the detected current value is 1560 A at a detected temperature of 205°C, the automatic cutoff temperature = (detected 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, terminal load equipment such as circuits, electrical devices, etc. can be determined, and the relevant distribution boards, control panels, circuits, etc., terminal load equipment, electrical devices, etc. can be automatically cut off at a detected current value of 1330 A, for example, when the detected cutoff current A = (detected current 1560 x automatic cutoff rate 29.2%) = 455.5 A.

[0092] An example of this flow is as follows: No. 1 power TR 500 kVA, maximum current 1718 A → boiling point temperature approximately 290°C to 340°C → boiling point warning temperature = (boiling point temperature 290°C x coefficient 0.40 = 116.0°C) → boiling point warning temperature → alert transmission → confirmation of alert transmission → continuous transmission → boiling point warning temperature exceeds 116°C → boiling point warning temperature = (boiling point temperature 290°C x coefficient 0.50 = 145.0°C) → automatic shutoff not possible → distinguish whether automatic shutoff is possible → detected temperature is 205°C → boiling point warning shutoff temperature 290°C x coefficient 0.50 → Boiling point alarm cutoff temperature 145.0°C → Automatic cutoff program → Automatic cutoff → Boiling point alarm cutoff in progress → Boiling point alarm cutoff temperature 145.0°C → Automatic cutoff stopped → Alarm boiling point cutoff temperature 145.0°C → Detected temperature 205°C → Detected current value 1560A → Automatic cutoff temperature = (Detected temperature 205°C - 145.0°C) = 60.0°C → Automatic cutoff rate = (60°C / 205°C) = 29.2% → Detected cutoff current A = (Detected current 1560A x Automatic cutoff rate 29.2%) = 455.5A) → Automatic cutoff.

[0093] In the above flow, the detected current may be the upper limit of the maximum current of 1718A.

[0094] The power TR of the boiling point alarm temperature type can be configured so that when the detection current detected by the CT rises above the boiling point warning 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.

[0095] An example of the configuration and function of the electric lighting, power transformer, electric lighting / power low voltage distribution panel, distribution panel / terminal load equipment of the power receiving and transforming equipment in the DSFCO system can be, for example, as follows.

[0096] For example, the building's power receiving and transforming equipment may consist of three lighting TRs and four power TRs, with the TR insulation type being Class A, and the configuration of the main distribution board + additional distribution board for the lighting TRs, including capacity, thermal relay, circuit current, and equipment capacity, can be as follows.

[0097] The transformer capacity of the lighting and power equipment for substations is determined based on the size of the building or facility (area, floors, etc.), the purpose of the building or facility, and the load capacity of the lighting and power equipment installed, such as terminal equipment and electrical equipment for each system. The maximum load capacity demand consumed by the load capacity is generally a safety factor for the corresponding lighting, with a load factor of approximately 70-75% for lighting and 60-65% for power. Therefore, for example, for a lighting TR6.6k / 210-105V, single-phase 200kVA transformer, installed on the secondary side of the transformer as a protective function, the thermal relay current value on the secondary side of the ammeter CT is 3.9A, and the load factor for alarm generation is 73%, or 0.73.

[0098] For example, the capacity of Tr1 for a single-phase lamp is 6.6k / 210-105V, the capacity of a single-phase 200kVA transformer is 200kVA, the maximum allowable current is (200kVA / 210V x 1.0) x 1000 = 952.4A, the ammeter CT1000A has a thermal relay current value of 3.9A, the alarm load current for preventing TR overcurrent is 780A, and proportionally the installed capacity of the TR safety protection is 164kW and the load factor is 82%.

[0099] That is, the capacity of the electric lamp Tr1 is KVA 200, the maximum allowable current A is 952, the thermal relay current A is 3.9, the warning load current A is 780, the load equipment capacity KW is 164, and the load factor is 0.82.

[0100] 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:

[0101] For example, the corresponding circuit of the transformer Tr1: 1φ, 200 kVA overcurrent protection thermal relay of the permanently installed low-voltage lighting panel No. 1 can be installed on the secondary side of a 1000 A / 5 A CT, and an external alarm output can be set at an alarm current of 780 A, for example, of 3.9 A.

[0102] The warning load current value = (3.9 A × 1000) / 5 A = 780 A, the load equipment capacity h1 = (I × V × e) = (780 A × 210 V × 1.0) ÷ 1,000 = 164 kW, and the load factor = (163.8 kW / 200 KVA) = 82%.

[0103] That is, the warning load current A is 780, the load equipment capacity kW is 164, and the load factor is 82%.

[0104] The safety features of conventional transformers include, for example, a TR capacity of 200 kVA, a maximum current value of 952 A, and a secondary output design of 5 A. However, the alarm current value is 3.9 A, but the thermal relay also sets off an alarm load current of 780 A, and an alarm buzzer will sound at the site of the substation equipment at 780 A, which is a load factor of 82%.

[0105] Depending on the full operation status of the power receiving and transforming equipment of building facilities, outdoor facilities, etc., for example, the permanent installation plus additional installation of terminal equipment of the system depending on the use of the facility, for example, the load capacity of the lighting TR of the system distribution board of the relevant low-voltage distribution board with a capacity of 200 KVA, the low-voltage lighting distribution board, and the terminal equipment of the system distribution board may be, for example, 200 KVA.

[0106] For example, depending on the usage situation, the configuration of the main plus additional low voltage lighting distribution board and system is as follows: main lighting distribution board: 25.0 KVA x 4 (No. 1 to No. 4) + 20.0 KVA (No. 5) + 25.0 KVA (No. 6) = 145.0 KVA, load factor 73%; backup additional lighting distribution board (27.5 KVA (No. 7) + 27.5 KVA (No. 8)) = 55.0 KVA, load factor 82%; distribution board 145.0 KVA + 55.0 KVA = 200 KVA, maximum current 952 A, maximum load factor 100%.

[0107] That is, the main No. 1 to No. 6 distribution boards are 145.0 KVA, the expansion distribution board is 55.0 KVA, the main + expansion distribution boards are 200.0 KVA, the maximum current is 952 A, and the maximum load factor is 100%.

[0108] Transformer Tr1 of low-voltage lighting panel No. 1: 1φ, 200kVA overcurrent protection thermal relay is installed on the secondary side of the 1000 / 5A CT of the corresponding circuit, and for example, a 3.9A thermal relay will provide an alarm current of 780A, regardless of the maximum load rate of 82%. In order to improve the efficiency of usage, the main distribution board capacity of the lighting and power low-voltage distribution board is 145.0KVA + additional distribution board capacity for spare use is 55.0KVA, resulting in an electrical capacity of 200.0KVA and a load rate of 100%. However, the demand rate for both lighting and power is not always 100%; the lighting and power demand rates are usually around 70-75% and 60-65%, respectively. Therefore, even if the capacity of the additional distribution board is increased to a load rate of 100%, the power consumption does not necessarily increase to 100%. Although the possibility of a load factor case is low, depending on the operating status of the terminal equipment, for example, if the demand for grid terminal load equipment increases and the alarm load current exceeds 780A, the load equipment capacity exceeds 164kW, and the load factor exceeds 82%, the current situation is that there are still insufficient countermeasures in place for cases where the alarm load current exceeds 780A, the maximum current exceeds 952A, or the maximum load factor exceeds 100%.

[0109] For example, the TR capacity of the power receiving and transforming equipment in a building facility, outdoor facility, etc. is, for example, 200 kVA, maximum current 952 A, and as a safety protection function of the low-voltage lighting panel of the power receiving and transforming equipment, the thermal relay is, for example, 3.9 A for the guard setting value of 5.0 A, the alarm load current is 780 A, the load equipment capacity is 164 kW, and the load factor is 82%, so No. 1 has a TR capacity of 200 KVA, and the capacity of the system distribution panel for No. 1 to No. 2 is, for example, 145 KVA for the capacity of the low-voltage lighting distribution panel of 200 KVA. The No. 6 distribution board has a capacity of 25 KVA and six 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, 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 low-voltage lighting distribution board system, for example, additional distribution boards No. 1 to No. 2 are installed and operated, and the amount of power exceeds 780 A, for example, the maximum current may exceed 952 A and the TR capacity may exceed 200 KVA.

[0110] The DSFCO system's alarm current alarm type electric light TR1 has a capacity of 200KVA, a maximum current of 952A, an alarm load current of 780A to prevent overload, and a proportional TR load equipment capacity of 164KW are entered into the database. For example, a CT ammeter installed in the electric light TR detects whether the detected current is an alarm current exceeding the CT detection current due to a safety protection overcurrent, etc., and the alarm load current of 780A is set as a pre-set caution alarm current of 780A. The relevant parties' PCs, tablets, smartphones, etc. are notified by ``alerts'' in the form of voice, numbers, images, etc., of the relevant information, such as the customer name, building name, facility name, location, electric light, type of power, capacity, electrical equipment at the system terminal, and load equipment name. 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 confirmation by the relevant person. When the detected current rises above, for example, a caution alarm current of 780 A and a preset alarm cutoff coefficient, for example, 1.10, is used, where the alarm cutoff current is (Caution alarm current 780 A × alarm cutoff coefficient 1.10) = 858 A, and the maximum current load coefficient for the maximum current of 952 A is (alarm cutoff current 858 A / maximum current 952 A) = 0.90, the alarm is cut off at a surplus rate of 10%. If the alarm tripping current is 858A or more, for example, if the detection current is 938A, the automatic tripping current = (detection current 938A) - (alarm tripping current 858A) = 80A will be automatically tripped, and for the relevant equipment capacity, the automatic tripping capacity is 16.8KVA, and a tripping rate of 8.5% will be automatically tripped. An embodiment can be made in which the tripping order of terminal load equipment, electrical equipment, etc. of the relevant main distribution board and additional distribution board is determined, and the terminal load equipment, electrical equipment, etc., as well as the relevant boards, circuits, etc., that can be tripped without causing any problems will be automatically tripped.

[0111] For example, this flow is as follows: electric light TR1 capacity 200 KVA → maximum current 952 A → alarm load current 780 A → load equipment capacity 164 KW → alarm current excess → CT detection current → caution alarm current 780 A → alarm tripping coefficient 1.10 → alarm tripping current 858 A → maximum current load coefficient 0.9 → surplus rate 10% → alarm tripping current 858 A → detection current 938 A → automatic tripping current 80 A → automatic tripping equipment capacity 16.8 KVA → tripping rate 8.5%.

[0112] 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, circuit, etc., as well as audio, images, temperature values, etc. for terminal electrical equipment, terminal load equipment, etc., and continues to send these 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 subsequent action.

[0113] This automatic shutoff can also be implemented in the manner and flow described above.

[0114] For example, the building's power receiving and transforming equipment may consist of three lighting transformers, four power transformers, and the insulation type of the TR is Type A. The configuration of the main distribution board + additional distribution board for the lighting TR, including capacity, thermal relay, circuit current, and equipment capacity, can be as follows:

[0115] When the CT-detected current of an alarm current warning type electric light TR rises above the warning alarm current of 780 A, and the warning cutoff coefficient of the warning alarm current of 780 A is set to 1.10, the automatic cutoff current can be set to (1350 A x 1.10) = 1485 A or more.

[0116] The capacity of the warning current safety type electric light TR1 is 200 KVA, the maximum current is 952 A, the warning load current for overload prevention is 780 A, and proportionally the TR load equipment capacity is 164 kW, which is entered as a database. For example, a CT ammeter installed in the electric light TR detects that the detected current exceeds the warning current due to a safety protection overcurrent, etc., and the warning load current is 780 A, but with a preset warning current coefficient of 0.97, the warning warning current = (alarm load current 780 A × warning current coefficient 0.97) = 756 A, so the degree of safety is high and the load rate of the relevant TR drops, and relevant information such as the customer name, building name, facility name, location, electric light, type of power, capacity, electrical equipment at the system terminal, load equipment name, etc. is sent as an alert in the form of voice, numbers, images, etc. to the PCs, tablets, smartphones, etc. of the relevant persons to notify them. Furthermore, the alert ringtone and image display based on the image information can be continuously transmitted until the relevant person confirms and resets, thereby preventing the relevant person from failing to confirm.

[0117] The DSFCO system can be configured so that the detected current increases and the automatic shutdown occurs when the detected current exceeds a predetermined maximum current of 952 A, for example, a maximum current coefficient of 0.9, a surplus rate of 10%, and an alarm shutdown current of (maximum current 952 A x maximum current coefficient 0.9) = 857 A. If the detected current is 938 A, automatic shutdown occurs at the automatic shutdown current = (detected current 938 A) - (alarm shutdown current 857 A) = 81 A, which is converted to an equipment automatic shutdown capacity kVA = ((current 81 A x voltage 210 V x power factor 1.0) / 1000 A = 17 kVA. An automatic shutdown equipment capacity of 17 kVA automatically shuts off at an automatic shutdown rate of 8.6%, and the shutdown order of the terminal load equipment, electrical equipment, etc. of the relevant main distribution board and additional distribution board can be determined, and the system can be configured to automatically shut off terminal load equipment, electrical equipment, etc. that will not cause any problems if shut down, as well as the relevant boards, circuits, etc.

[0118] Electric light 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 shut-off current 857A, detection current 938A, automatic shut-off current 81A, automatic shut-off equipment capacity 17KVA, automatic shut-off rate: 8.6.

[0119] The system sends an alert of the automatic shutdown to the relevant parties' PCs, tablets, smartphones, etc., including the customer name, building name, low-voltage distribution board, distribution board, control panel, circuit, etc., as well as audio, images, temperature values, etc. to terminal electrical equipment, terminal load equipment, etc., and continues to send the alert until the relevant parties confirm that the alert has been sent, allowing the relevant parties to check safety in real time after the automatic shutdown and take subsequent action.

[0120] This automatic shutoff can also be implemented in the manner and flow described above.

[0121] When the CT detects a current that exceeds the warning current of 756A for a caution current safety type electric light TR, and the current exceeds 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) will be automatically cut off.

[0122] Configuration and function of substation equipment (cubicles), electric lighting, power transformers, low voltage electric lighting and power distribution panels, distribution panels and terminal load equipment using the DSFCO system.

[0123] For example, in order to enhance the safety function of the transformer, the DSFCO system detects a preset warning current of 1350 A, or a warning coefficient of 0.98, for example (alarm current 1350 A x warning coefficient 0.98) = 1323 A, for a main distribution board alarm current of 1350 A, a load equipment capacity of 393 kW, and a load operating rate of 79%, and sends an alert to the relevant person's PC, tablet, smartphone, etc., with relevant information such as the customer name, building name, facility name, location, transformer name, etc. Furthermore, the alert continues to be sent until the relevant person confirms the image display based on the alert transmission and image information and resets it, and alerts are sent with voice, numerical values, images, etc. for each system.

[0124] This flow is, for example, as follows: Alarm current 1350A → load equipment capacity 393KW → safety caution coefficient 0.98 → caution current 1323A.

[0125] For example, in the case of power receiving and transforming equipment in a building facility, outdoor facility, etc., the power TR capacity is 500 kVA, the maximum current is 1,718 A, and the safety protection function of the low-voltage power distribution panel of the power receiving and transforming equipment has a guard setting value of 5.0 A. For example, the thermal relay is 3.9 A, the alarm load current is 1,350 A, the load equipment capacity is 393 kW, and the load factor is 79%, so No. 1 has a TR capacity of 500 kVA. For the capacity of the low-voltage power distribution panel of 500 kVA, the capacity of the system distribution panel is, for example, 320.5 kVA for six panels of main distribution panel No. 1 to No. 6 + No. 7 to No. 8. 9, the three sides are 179.7KVA = 500KVA, the load factor is 73% and the surplus rate is 27%, and the system distribution board of the relevant switchboard is in addition to the main distribution board, 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, the system terminal electrical equipment such as additional distribution boards, shelf load equipment, etc. are in full operation, and the amount of power exceeds the alarm current of 1350A, for example, the maximum current is 1718A, the TR capacity is 500KVA, or it may even exceed it.

[0126] 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 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 79%.

[0127] This flow is, for example, as follows: Permanent distribution boards No. 1 to No. 6: 320.5 kVA → Expansion distribution boards No. 7 to No. 9: 179.7 kVA → Total distribution boards: 500 → Maximum current: 1,718 A → Alarm current: 1,350 A → Load capacity: 393 kW → Load factor: 79%.

[0128] The Tr1.3φ500kVA overcurrent protection thermal relay of low voltage power panel No. 1 is installed on the secondary side of the 1500 / 5A CT of the corresponding circuit, and for example, a 4.5A thermal relay will provide an alarm current of 1350A, regardless of the maximum load factor of 79%. For example, for efficiency depending on the operating situation, the main distribution board capacity of the above-mentioned electric lighting and power low voltage distribution board will be 320.5KVA + additional distribution board capacity for spare use will be 179.7KVA, resulting in an electrical capacity of 500.0KVA and a load factor of 100%. However, the electrical equipment is for lighting, power, The demand rate for both lighting and power is not always 100%, and is usually around 70-80% for lighting and 65-75% for power, and even with the equipment contents where the capacity of the expanded distribution board has been increased to a load rate of 100%, it is unlikely that the power consumption will necessarily 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 above-mentioned alarm current of 1350 A, reaching a maximum current of 1718 A and a maximum load rate of 100% for a TR capacity of 500 KVA, resulting in a TR capacity of 500 KVA.

[0129] The DSFCO system's alarm current alarm type power TR1 has a capacity of 500 kVA, a maximum current of 1718 A, an alarm load current of 1350 A for overload prevention, and a proportional TR load equipment capacity of 393 kW, which are entered into the 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 1350 A due to safety protection overcurrent, etc. If it exceeds the limit, the alarm load current is set as a caution current, and relevant personnel are notified by sending audio, numerical, image, etc. alerts to their PCs, tablets, smartphones, etc., including the customer name, building name, facility name, location, electric light, type of power, capacity, electrical equipment at the system terminal, and load equipment name. Furthermore, the alert ringtone and image display based on the image information can be continuously transmitted until the relevant personnel confirm and reset, preventing personnel from missing any confirmations.

[0130] When the detection current exceeds, for example, the caution current of 1350A, and the preset alarm cutoff coefficient is, for example, 1.10, the 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, the excess rate is 14%, and the detection current is, 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%, and it is possible to determine the order in which the terminal load equipment, electrical equipment, etc. of the relevant main distribution board and additional distribution board are shut off, and to automatically shut off the terminal load equipment, electrical equipment, etc., as well as the relevant boards, circuits, etc., which will not cause any problems if they are shut off.

[0131] For example, this flow is as follows: Light TR1 capacity 500 KVA → Maximum current 1718 A → Alarm load current 1,350 A → Load equipment capacity 393 KW → Alarm load current below or exceeding 1,350 A → Caution alarm current 1,350 A → Alarm tripping coefficient 1.10 → Alarm tripping current 1,485 A → Maximum current load coefficient 0.86 → Surplus rate 14% → Alarm tripping current 1,485 A → Detection current 1,585 A → Automatic tripping current 95 A → Automatic tripping equipment capacity 27.6 KVA → Automatic tripping rate 6.0%.

[0132] 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, circuit, etc., as well as audio, images, temperature values, etc. for terminal electrical equipment, terminal load equipment, etc., and continues to send these 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 subsequent action.

[0133] The automatic shutdown in the DSFCO system can be implemented, for example, by computer programs such as AI and IoT, to automatically shut down terminal equipment, such as terminal devices, by program control, shutdown, etc. of products, manufacturing, etc., logistics centers, large freezers, refrigerators, etc., lighting, elevators, etc. in commercial facilities where many people gather, terminal buildings, hotels, etc., data centers for important data, research and test results, etc., infrastructure substations, etc., and various types of relevant equipment and electrical devices in transportation trains, ships, etc. In this case, in a DSFCO system composed of remote devices, etc. for each system, such as distribution boards, distribution boards, control panels, main lines, circuits, breakers, etc., and a cloud server, LAN, etc., an emergency response protection program can be used to safely protect all or selected terminal equipment, etc., by having the remote devices, such as the relevant distribution boards, distribution boards, control panels, etc., send a signal to a protection stop device via the cloud server, LAN, etc. The device may be configured to have a function control means for stopping the vehicle normally and safely, and also have a function for checking the stop signal.

[0134] When the CT-detected current of a power TR with an alarm current alarm type rises above the warning alarm current of 1350 A, and the alarm cutoff coefficient for the warning alarm current of 1350 A is set to 1.10, which is a preset value, the automatic cutoff current can be set to (1350 A x 1.10) = 1485 A or more.

[0135] The capacity of the caution current safety type power TR1 is 500 KVA, the maximum current is 1718 A, the alarm load current for overload prevention is 1350 A, and proportionally the TR load equipment capacity of 393 kW is entered as a database. For example, a CT ammeter installed in the electric light TR detects an alarm current exceedance due to the detected current being a safety protection overcurrent, and the alarm load current of 1350 A is set arbitrarily in advance with a caution current coefficient of, for example, 0.96, so that the caution alarm current = (alarm load current 1350 A × caution current coefficient 0.96) = 1296 A, which indicates a high level of safety and reduces the load factor of the relevant TR. An alert is then sent to the PC, tablet, smartphone, etc. of the relevant person 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 at the system terminal, name of load equipment, etc., in the form of voice, numbers, images, etc. Furthermore, the alert ringtone and image display based on the image information can be continuously transmitted until the relevant person confirms and resets, thereby preventing the relevant person from failing to confirm.

[0136] The DSFCO system can be configured so that the detected current increases and the automatic shutdown occurs when the maximum current of 1718 A is set to a predetermined value, for example, a maximum current coefficient of 0.7, and the detected current exceeds a 30% surplus rate, with the warning shutdown current = (maximum current 1718 A x maximum current coefficient 0.86) = 1477 A. If the detected current is 1610 A, the automatic shutdown current = (detected current 1610 A) - (warning shutdown current 1477 A) = 133 A 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., as well as the relevant boards, circuits, etc. that will not cause any problems if shut off.

[0137] This flow is, for example, as follows: electric light TR1 capacity 500 KVA → maximum current 1718 A → alarm load current 1,350 A → load equipment capacity 393 KW → alarm current excess → CT detection current → alarm load current 1,350 A → caution current coefficient 0.96 → caution alarm current 1,296 A → maximum current coefficient 0.7 → surplus rate 30% → alarm tripping current 1,477 A → detection current 1,610 A → automatic tripping current 133 A → automatic tripping equipment capacity 22.0 KVA → automatic tripping rate 8.2%.

[0138] 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, circuit, etc., as well as audio, images, temperature values, etc. for terminal electrical equipment, terminal load equipment, etc., and further 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 subsequent action.

[0139] The automatic shutdown in the DSFCO system can be implemented in a form in which, for example, computer programs such as AI and IoT are used to automatically shut down products, manufacturing, etc., logistics centers, large freezers, refrigerators, etc., lighting, elevators, etc. in commercial facilities where many people gather, terminal buildings, hotels, etc., data centers for important data, research and test results, etc., infrastructure substations, etc., various types of relevant equipment, electrical equipment, etc. in transportation trains, ships, etc., relevant terminal equipment, program control of electrical equipment, etc., and terminal equipment, etc., for shutting down, etc., using a predetermined program. In this case, in a DSFCO system that is composed of remote devices for each system, such as distribution boards, panel boards, control panels, main lines, circuits, breakers, etc., and a cloud server, LAN, etc., an emergency response protection program is used to send a signal from the remote devices for each system, such as the relevant distribution boards, panel boards, control panels, etc. to the protection stop device, and the control equipment, etc., as a whole or selected terminal equipment, etc. is shut down by a safety protection program, allowing for normal and safe control of the stop function and also providing a function to confirm the stop signal.

[0140] When the CT-detected current of a caution current safety type electric light TR rises above the caution warning current of 1296 A, and the maximum current coefficient is 0.86 for a pre-set maximum current of 1718 A, the automatic shutdown current = (maximum current 1718 A x 0.86) = 1477 or more can be configured to automatically shut off the current.

[0141] DSFCO systems are installed in, for example, building facilities such as complex buildings, skyscrapers, underground shopping malls, warehouses, logistics centers, factories, etc.; commercial facilities, assembly halls, 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 large buildings, facilities, etc., to prevent serious electric shock accidents and secondary electric shocks when electricity is flowing to electrical equipment such as substations, low-voltage distribution boards, distribution boards, control panels, terminal equipment, electrical devices, etc.

[0142] The system can be equipped with a means for automatically cutting off the power supply to the control panels, distribution panels, low-voltage distribution panels, etc. in the detection area, for example, the area, section, floor, basement, ground floor, building, etc., where the fire alarm has detected a fire, via a communication line from the disaster prevention panel, and automatically cutting off the circuit of the relevant panel in the area where the detector has detected a fire, thereby preventing secondary disasters such as electric shock, short circuits, sparks, etc. due to the fire.

[0143] For example, by selecting in advance firefighting equipment, electrical equipment necessary for safety such as emergency broadcasts, emergency guide 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, a system can be created that ensures evacuation safety and is equipped with means to automatically cut off the above-mentioned electrical lighting and power equipment.

[0144] 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, if it is detected that the design specifications of the equipment in question have been exceeded, the equipment will be automatically shut off to protect the functionality of the equipment and prevent accidents. For example, products, production, etc. by computer programs such as AI and IoT, etc., logistics centers, large freezers, refrigerators, etc., lighting, elevators, etc. in commercial facilities where many people gather, terminal buildings, hotels, etc., important When terminal equipment, such as data centers for various data, research and test results, infrastructure substations, and various types of relevant equipment and electrical equipment such as trains and ships for transportation, are shut down using a predetermined program, the DSFCO system, which is composed of remote devices for each system such as distribution boards, panel 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 shutdown function and a function for checking the stop signal.

[0145] For example, when a fire alarm goes off, the smoke detector, heat detector, flame detector, etc. of the fire alarm on the disaster prevention panel of the firefighting equipment sends a signal to the central monitoring server via a signal line via a remote device, and the relevant panels, control panels, circuits, etc. of the low-voltage lighting and power distribution panel, distribution panel, control panel, etc. of the power receiving and transforming equipment, terminal electrical equipment, terminal load equipment, etc., are automatically shut off or not, and this is determined in advance by a program, for example, in a data center. It selects server operation, production manufacturing processes, cash register lines, etc., elevators, emergency lighting, emergency broadcasts, fire extinguishing, smoke exhaust, emergency equipment, etc., and automatically shuts off the relevant panels, circuits, etc. It also detects the relevant information detected by the fire alarm, etc., such as the building tower, floor, fire compartment, evacuation stairs, area, room, etc., and sends an alert of "fire" to the PCs, tablets, smartphones, etc. of the relevant parties, including the customer name, building name, facility name, location, TR lights, power type, capacity, electrical equipment at the system terminal, and cargo equipment name, via email, voice, etc., as well as images from a digital camera installed on the relevant floor or area location, and continues to send the alert until the relevant parties confirm the image display based on the image information, preventing electrical burnout accidents and secondary disasters.

[0146] 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. → Remote device → Central monitoring server → Low-voltage lighting and power distribution panel, distribution board, control panel, etc. → Terminal electrical equipment, terminal load equipment, etc. → Automatic circuit shutdown → Fire alarm, etc. detects → Program → Selection → Applicable panel, circuit, etc. → Fire alarm, etc. detects → Building building, floor, fire compartment, evacuation staircase, area, room, etc. → Detects and fire breaks out → Installed in the location of the applicable floor or area → Digital camera image → Alert sent → Confirm alert sent → Continuous transmission → Prevents electrical burnout and secondary disasters.

[0147] This automatic shutoff can also be implemented in the manner and flow described above.

[0148] In the DSFCO system, when a relevant detector in the low-voltage lighting system, for example in the third floor area, detects and sounds 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 inputs the information into the system's server computer via LAN, and sends an alert to the PCs, tablets, smartphones, etc. of the relevant parties, including, for example, the customer name, building name, facility name, location, floor number, area, etc., as well as the name of the electrical equipment and load equipment at the system terminal, in the form of voice, numbers, images, etc., and the like; the alert is sent continuously until the relevant parties confirm the image display based on the image information, thereby notifying them of an electrical burnout accident or fire accident.

[0149] For example, this flow is as follows: Smoke, heat, fire, etc. in the third floor area → detector → detection and alarm → fire and disaster prevention panel → remote device → server → alert transmission → confirmation of alert transmission → continuous transmission.

[0150] In the DSFCO system, when a smoke, heat, fire, or other fire detector in the third floor area detects and activates an alarm, the fire and disaster prevention panel receives the information via the communication cable, and the information is input to the system's server via the system's remote device and LAN, and the system detects and activates the fire alarm in the third floor area. This information is then used to prevent secondary electrical accidents, such as short circuits, sparks, and tracking in the low-voltage distribution board, distribution board, control panel, and system trunk lines, wiring, terminal electrical equipment, terminal load equipment, etc., of the circuits No. 1, No. 2, No. 3, and No. 4 of the lighting distribution board No. 3 in the third floor area of ​​the fire alarm, for example. 4 can be automatically shut off, and the occurrence of secondary accidents such as the spread of fire due to secondary disasters such as electrical accidents caused by short circuits, sparks, tracking, etc. during a fire, and secondary accidents such as electric shock, etc., causing personal injury, etc. can be prevented.

[0151] An example of this flow is as follows: Smoke, heat, flames, etc. in the third floor area → detector detects and sounds an alarm → fire and disaster prevention panel → remote device, LAN → server → fire alarm in the third floor area → lighting distribution panel No. 3 → circuits No. 1, No. 2, No. 3, and No. 4 → panels, main lines, wiring, terminal electrical equipment, terminal load equipment, etc. → fire alarm in the third floor area → circuits No. 1, No. 2, No. 3, and No. 4 → automatic shutdown → prevents the spread of fire and other secondary disasters such as short circuits, sparks, and tracking during a fire, as well as electric shock and other injuries.

[0152] 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 lighting system, for example, important databases, servers, research data, product manufacturing, process inspection equipment, analyzers, lighting, etc. in factories, etc. The relationship between current value and operating time is compiled into a database for the safety protection of terminal load equipment and electrical equipment, and when automatic shutdown is performed as described above, an alert is sent in real time to the PCs, tablets, smartphones, etc. of the relevant persons using audio, image, and numerical values, and the breakers, etc. of the distribution boards, distribution boards, control panels, main lines, circuits, etc. of the relevant equipment are controlled by remote devices for each system, etc. via a cloud server, LAN, etc., through an emergency response protection program, so that the remote devices of the relevant distribution boards, distribution boards, control panels, etc. send a stop signal to the protection stop device to safely and reliably shut down the equipment, and the system can be configured to have a control means with a function to confirm the stop signal.

[0153] For example, remote devices for each system, etc., and remote devices such as the relevant distribution boards, distribution panels, control panels, etc., send an emergency response protection program via a cloud server, LAN, etc. to a protection shutdown device, and a batch or selected terminal devices, etc., are safely and accurately shut down using a predetermined program.

[0154] In the DSFCO system, the appropriate detector in the low-voltage power system, for example, for smoke, heat, flame, etc., detects and sounds an alarm, which is then received by the fire prevention panel via the communication line. The signal line of the system connected to the fire prevention panel is then connected to a remote device, and the signal is input from the remote device via LAN to the system server, and an alert is sent to the PCs, tablets, smartphones, etc. of the relevant parties, including the relevant information such as the building name, facility name, location, floor number, area, etc., as well as the name of the electrical equipment and load equipment at the system terminal, in the form of voice, numbers, images, etc., and the like, and the alert is sent continuously until the relevant parties confirm the image display based on the alert transmission and image information, thereby notifying them of electrical burnout accidents and fire accidents.

[0155] 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 → LAN from remote device → alert transmission confirmed → continuous transmission.

[0156] 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 transformers that are installed in the middle of each electric circuit from the power source side to the multiple load sides and that is the subject of monitoring, to determine whether it is possible to continue supplying power via the transformers that are the subject of monitoring, and if necessary, continues to issue an alarm to the person in charge, and if necessary, cuts off the power supply.

[0157] Furthermore, the DSFCO system can be provided in which a detector such as a fire alarm detects the occurrence of smoke, heat, flames, etc. in a building where a monitored transformer or the like is installed, and sends an alert to a fire prevention panel or the like, which cuts off the power to electrical circuits installed in the area where the occurrence of smoke, heat, flames, etc. is detected, thereby preventing secondary electrical accidents and the like caused by a fire that may result from 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.

[0158]

[0023] Fig. 1 is a diagram showing a portion of the overall configuration of the digital power receiving and substation fire control system of the present invention. It is a conceptual diagram, with some parts omitted, illustrating a state in which a DSFCO system central device, which is a server device configured by a computer, is connected to the lighting transformers and power transformers that it manages and controls, so that information can be exchanged between them via wired or wireless networks such as the Internet or a dedicated line.

[0024] Fig. 1 is a conceptual diagram showing an example of a configuration in which the lighting transformer shown in Fig. 1 and the power transformer are connected to multiple load circuits.

[0025] Fig. 1 is a conceptual diagram, with some parts omitted, illustrating a configuration in which multiple power-side electric circuits from the power source side and multiple load-side electric circuits leading to multiple loads are electrically connected via electrical equipment installed within the housing of the lighting transformer shown in Fig. 1.

[0026] Fig. 1 is a conceptual diagram, with some parts omitted, illustrating a configuration in which multiple power-side electric circuits from the power source side and multiple load-side electric circuits leading to multiple loads are electrically connected via electrical equipment installed within the housing of the power transformer shown in Fig. 1.

[0027] Fig. 2 is a diagram showing an example of a distribution board (terminal load equipment) receiving power via the low-voltage lighting distribution board shown in Fig. 3. Fig. 3 is a diagram showing an example of a distribution board (terminal load equipment) receiving power via the low-voltage power distribution board shown in Fig. 4. 5 and 6. FIG. 6 is a diagram showing an example of the load coefficients of the transformers for the low-voltage lighting distribution panel and the low-voltage power distribution panel shown in FIG. 5 and FIG. 6. FIG. 6 is a partially omitted conceptual diagram illustrating an example of the network configuration on the DSFCO system central device side in the network configuration shown in FIG. 1. FIG. 8 is a conceptual diagram illustrating a schematic configuration in which control is performed on the first floor lighting distribution panel by control using the network configuration shown in FIG. 8. FIG. 8 is a conceptual diagram illustrating a schematic configuration in which control is performed on the first floor material handling control power panel by control using the network configuration shown in FIG. 8. FIG. 8 is a diagram illustrating an example of the configuration of power receiving and transforming equipment in a building. FIG. 9 is a diagram illustrating another example of the configuration of power receiving and transforming equipment in a building. FIG. 9 is a diagram illustrating an example of the data status of load equipment when the system of the present invention is executed. FIG. 10 is a diagram showing an example of a plurality of load names for which the system of the present invention is executed and an overview of their capacities. FIG. 11 is a diagram showing another example of a plurality of load names for which the system of the present invention is executed and an overview of their capacities. FIG. 12 is a diagram showing yet another example of a plurality of load names for which the system of the present invention is executed and an overview of their capacities. FIG. 13 is a diagram showing an example of the data status when automatic current shutdown is executed by the system of the present invention.19A and 19B are diagrams illustrating another example of a data status when an automatic current interruption is performed by the system of the present invention. FIG. 19B is a diagram illustrating yet another example of a data status when an automatic current interruption is performed by the system of the present invention. FIG. 19C is a diagram illustrating one example of a plurality of load names and an overview of their capacities in the state shown in FIG. 19C. FIG. 19C is a diagram illustrating another example of a plurality of load names and an overview of their capacities in the state shown in FIG. 19C. FIG. 19D is a diagram illustrating yet another example of a plurality of load names and an overview of their capacities in the state shown in FIG. 19C. FIG. 19D is a diagram illustrating another example of a data status when an automatic current interruption is performed by the system of the present invention. FIG. 19C is a diagram illustrating one example of a type and aspect of a transformer in which the system of the present invention is implemented. FIG. 19D is a diagram illustrating one example of conditions required for a transformer in which the system of the present invention is implemented. FIG. 19D is a diagram illustrating another example of conditions required for a transformer in which the system of the present invention is implemented. FIG. 19D is a diagram illustrating another example of a data status when an automatic current interruption is performed by the system of the present invention. FIG. 19D is a diagram illustrating another example of a data status when an automatic current interruption is performed by the system of the present invention. FIG. 37 is a diagram illustrating another example of the data status when an automatic current shutdown is performed by the system of the present invention. FIG. 38 is a diagram illustrating another example of the data status when an automatic current shutdown is performed by the system of the present invention. FIG. 39 is a diagram illustrating another example of the data status when an automatic current shutdown is performed by the system of the present invention. FIG. 39 is a conceptual diagram illustrating a schematic configuration in which control is performed on a low-voltage lighting distribution panel and a low-voltage power distribution panel in the network configuration on the DSFCO system central device side in the network configuration shown in FIG. 1. FIG. 39 is a conceptual diagram illustrating a schematic configuration of control in a building under the control shown in FIG. 37. FIG. 39 is a diagram illustrating an example of an alert response function flow of a disaster prevention panel and an alarm panel in the system of the present invention. FIG. 39 is a diagram illustrating an example of a network configuration in which power shutdown is performed by the system of the present invention. FIG. 39 is a diagram illustrating another example of a network configuration in which power shutdown is performed by the system of the present invention.FIG. 1 is a diagram illustrating an example of a network configuration for an alarm by the system of the present invention.

[0159] The digital substation fire control system (DSFCO system) of the present invention comprises a transformer temperature acquisition means (transformer temperature sensor) that is installed midway through each electric circuit from the power source side to multiple load sides and grasps the temperature of the transformer being monitored, a first transformer temperature comparison means, a second transformer temperature comparison means, a first alarm notification information output means, a second alarm notification information output means, a confirmation information acquisition confirmation means, a means for determining whether the power supply can be automatically shut off, a first power supply cutoff means, a second power supply cutoff means, and a third power supply cutoff means.

[0160] 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.

[0161] The power device in this case is, for example, a device that electrically connects a power supply side electric circuit from the power source side to a plurality of load side electric circuits via electrical equipment arranged in a housing.

[0162] 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 installed in the power supply-side electric circuit within the housing, and a second electric device is installed in each of the multiple load-side electric circuits within the housing. The first electric device installed in the power supply-side electric circuit and the multiple second electric devices installed in each of the multiple load-side electric circuits are both disposed within the housing.

[0163] Such power devices include, for example, various substation equipment, distribution boards, panelboards, lighting panels, power panels, control panels, remote control device panels, and junction boxes for branch wiring connections of extension cords or wiring between distribution boards and panelboards and equipment and appliances.

[0164] The first electrical device is arranged within the housing that constitutes the above-mentioned power device, and establishes an electrical connection between the power supply side circuit from the power source side and the load side circuit toward the load, and examples thereof include a main breaker and a ground fault circuit breaker.

[0165] The plurality of second electrical devices are circuit switches of a type different from the above-mentioned main breaker, earth leakage breaker, etc. Examples thereof include a magnetic switch, a power relay, and a solid-state relay.

[0166] The multiple loads to which the load side circuits are directed include, for example, power / electrical devices and equipment that operate by receiving power supply, such as prime movers, elevators, air conditioning equipment, ventilation equipment, lighting equipment, refrigerated / freezer cases, refrigerators / freezers, measuring instruments, computer equipment, surveillance cameras, medical equipment, and communication equipment, and include power / electrical devices and equipment that are deployed and used both inside and outside buildings, power / electrical devices and equipment that are deployed and used in vehicles and means of transportation such as trains, cars, airplanes, and ships, and outlets to which these are connected.

[0167] These multiple loads are connected to the tip side of each of the multiple electric circuits.

[0168] The transformer to be monitored can be, for example, arranged midway through each electric circuit that constitutes the power supply side electric path leading to the above-mentioned power device.

[0169] The above-mentioned transformer temperature acquisition means (e.g., a transformer temperature sensor) is installed in the vicinity of the transformer being monitored, along each electrical circuit from the power source to the multiple loads. It is a conventionally known device or equipment, such as a transformer temperature sensor, that monitors the temperature of the monitored transformer. This transformer temperature acquisition means (e.g., a transformer temperature sensor) constantly outputs digital information about the monitored transformer temperature to a computer constituting the digital substation fire control system (DSFCO system) of the present invention via a network.

[0170] The first transformer temperature comparison means described above performs a process of comparing the monitored transformer safety coefficient temperature, which is a value obtained by multiplying the temperature of the transformer acquired by the transformer temperature acquisition means by a safety temperature coefficient 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, with a preset safety caution temperature.

[0171] Furthermore, when the first transformer temperature comparison means determines that the monitored transformer safety factor temperature has reached a safety caution temperature, the above-mentioned first alarm notification information output means performs processing to output first alarm notification information 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 electric circuit in which the monitored transformer is installed. This first alarm notification information is transmitted and output from a computer constituting the system of the present invention to the terminal via a wired or wireless network.

[0172] The confirmation information acquisition confirmation means described above 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 has received the output of the first alarm notification information.

[0173] When confirmation information is returned from the person in charge terminal via the above-mentioned network confirming that the first alarm notification information has been acquired, the person in charge confirms that the first alarm notification information has been acquired.

[0174] In response to this processing performed by the confirmation information acquisition confirmation means, the above-mentioned first alarm notification information output means is configured to perform processing to continue outputting the first alarm notification information to the person in charge terminal until the confirmation information acquisition confirmation means can confirm the return of the confirmation information.

[0175] The second transformer temperature comparison means described above performs a process of comparing the alarm shutoff temperature of the monitored transformer, which is a value obtained by multiplying the temperature of the transformer acquired by the transformer temperature acquisition means by an alarm shutoff temperature coefficient 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, with a preset alarm shutoff temperature.

[0176] When the second transformer temperature comparison means determines that the monitored transformer safety factor temperature has reached the alarm cutoff temperature, the second alarm notification information output means performs processing to output second alarm notification information 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 electric circuit in which the monitored transformer is installed. This second alarm notification information is also transmitted and output from a computer constituting the system of the present invention to the terminal via a wired or wireless network.

[0177] In response to the above-mentioned processing performed by the second alarm notification information output means, the confirmation information acquisition confirmation means also performs processing to monitor whether confirmation information 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.

[0178] When confirmation information is returned from the person in charge's terminal via the network, confirming that the second alarm notification information has been acquired, the person in charge confirms that the second alarm notification information has been acquired.

[0179] In response to this processing performed by the confirmation information acquisition confirmation means, the above-mentioned second alarm notification information output means is configured to perform processing to continue outputting the second alarm notification information to the person in charge terminal until the confirmation information acquisition confirmation means can confirm the return of the confirmation information.

[0180] The above-mentioned automatic power supply cutoff possibility determination means performs processing to determine whether the load to which power is supplied via the electrical circuit in which the transformer being monitored is installed when the second alarm notification information output means outputs the second alarm notification information is a load to which power supply can be automatically cut off.

[0181] The first power supply cutoff means performs processing to cut off the power supply to the load for which it has been determined by the automatic power supply cutoff possibility determining means that automatic power supply cutoff is possible.

[0182] For example, in order to cut off the power supply through the electrical circuit by a circuit breaker installed in the electrical circuit to which power is being supplied via the transformer, command information for causing the circuit breaker to execute a process to cut off the power supply through the electrical circuit is sent and output from a computer constituting the system of the present invention to the circuit breaker via a network.

[0183] When the automatic power supply cut-off capability determination means determines that the automatic power supply cut-off is not possible, the second power supply cut-off means described above cuts off the power supply to the load device control device that controls the load for which it has been determined that the automatic power supply cut-off is not possible, and then performs processing to cut off the power supply to the load.

[0184] For example, in order to have the circuit breaker installed in the electrical circuit that supplies power to the load device control device that controls the load that has been determined to be unable to automatically shut off the power supply cut off via the electrical circuit, command information to cause the circuit breaker to execute a process to shut off the power supply via the electrical circuit is sent and output from the computer that constitutes the system of the present invention to the circuit breaker via a network, and subsequently, in order to have the circuit breaker installed in the electrical circuit that supplies power to the load that has been determined to be unable to automatically shut off the power supply cut off via the electrical circuit, command information to cause the circuit breaker to execute a process to shut off the power supply via the electrical circuit is sent and output from the computer that constitutes the system of the present invention to the circuit breaker via a network.

[0185] The third power supply cut-off means described above is installed in the building in which the transformer is installed, and when a fire alarm that detects smoke, heat, or flames caused by a fire and sounds an alarm is sent to a fire prevention panel installed in the building, it performs a process of cutting off the power supply to the loads installed in the area where the fire alarm that sounded the alarm is installed or to the loads installed in the building.

[0186] For example, in order for the circuit breaker installed in the electrical circuit that supplies power to the load located in the area where the fire alarm that has activated to cut off the power supply via the electrical circuit, command information for causing the circuit breaker to execute a process to cut off the power supply via the electrical circuit is sent and output from the computer that constitutes the system of the present invention to the circuit breaker via a network.

[0187] Alternatively, in order to cut off the power supply via the electrical circuit by the circuit breaker interposed in the electrical circuit that supplies power to the load installed in the building where the transformer is installed, command information for causing the circuit breaker to execute a process to cut off the power supply via the electrical circuit is transmitted and output from a computer constituting the system of the present invention to the circuit breaker via a network.

[0188] The insulating materials used in transformers (TRs) include insulating oil, SF6 gas, kraft paper, pressboard, mica, glass fiber, epoxy resin, silicon resin, alkyd resin, etc. The maximum allowable temperature is set taking into consideration the heat resistance characteristics of the insulating materials used.

[0189] For example, the maximum allowable temperature for Class A insulation, which is made from insulating materials such as cotton, silk, kraft paper, and pressboard and is reinforced with varnish or insulating oil, is 105°C.

[0190] The maximum allowable temperature for 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.

[0191] The maximum allowable temperature for Class B insulation, which is made of inorganic material solidified with adhesive, is 130°C.

[0192] Type F insulation, which is made of Type B insulation material but with more heat-resistant adhesives, silicone resins, and alkyd resins, has a maximum allowable temperature of 155°C.

[0193] The maximum allowable temperature for type H insulation, which uses inorganic materials made of silicone resin (or a resin with heat resistance equal to or greater than silicone resin), is 180°C.

[0194] The computer constituting the system of the present invention records in its memory, for each transformer being monitored, information relating to the safety temperature coefficients and safety caution temperatures that are preset for each heat resistance class (A, B, E, F, H) classified according to the heat resistance characteristics of the insulating material used in the transformer being monitored, linked to information identifying each transformer being monitored.

[0195] For example, in this embodiment, the safety temperature coefficient is set to 1.10 for all heat resistance classes A, B, E, F, and H, and is recorded in association with information identifying each transformer being monitored.

[0196] The first transformer temperature comparison means compares the monitored transformer safety coefficient temperature, which is a value obtained by multiplying the temperature of the transformer acquired by the transformer temperature acquisition means by 1.10, a safety temperature coefficient that is preset for each heat resistance class classified according to the heat resistance characteristics of the insulating material used in the monitored transformer, with a preset safety caution temperature (for example, if the monitored transformer is Type A, the safety caution temperature is set to 105°C, the above-mentioned maximum allowable temperature).

[0197] Therefore, for example, if the transformer to be monitored is a type A transformer, the first transformer temperature comparison means will perform a process of comparing the target transformer safety coefficient temperature, which is the value obtained by multiplying the temperature of the transformer acquired by the transformer temperature acquisition means by 1.10, which is a safety temperature coefficient, with the safety caution temperature (in the above case, 105°C, the maximum allowable temperature mentioned above).

[0198] As mentioned above, in this embodiment, the safe temperature coefficient is set to 1.10, but the value of the set safe temperature coefficient can be set to an appropriate value for each of the types A, B, E, F, and H of the transformers to be monitored, taking into consideration each of the types A, B, E, F, and H, within a range that allows the object of the present invention to be appropriately achieved.

[0199] Furthermore, as described above, in this embodiment, the safety caution temperature is set to the same temperature as the maximum allowable temperature of the transformer to be monitored. However, taking into consideration the types A, B, E, F, and H of the transformer to be monitored, the safety caution temperature can be set to an appropriate temperature value within a range below the respective maximum allowable temperatures for types A, B, E, F, and H, within a range that can appropriately achieve the object of the present invention.

[0200] The computer constituting the system of the present invention records in its memory, for each transformer being monitored, information relating to the alarm tripping temperature coefficient and information relating to the alarm tripping temperature, which are preset for each heat resistance class (A, B, E, F, H) classified according to the heat resistance characteristics of the insulating material used in the transformer being monitored, linked to information identifying each transformer being monitored.

[0201] For example, in this embodiment, the alarm shutoff temperature coefficient is set to 0.97 for all heat resistance classes A, B, E, F, and H, and is recorded in association with information identifying each transformer being monitored.

[0202] The second transformer temperature comparison means compares the alarm shutoff temperature of the monitored transformer, which is a value obtained by multiplying the temperature of the transformer acquired by the transformer temperature acquisition means by 0.97, which is an alarm shutoff temperature coefficient that is preset for each heat resistance class classified according to the heat resistance characteristics of the insulating material used in the monitored transformer, with a preset alarm shutoff temperature (for example, if the monitored transformer is Type A, the alarm shutoff temperature is set to 105°C, the above-mentioned maximum allowable temperature).

[0203] Therefore, for example, if the transformer to be monitored is a type A, the second transformer temperature comparison means will perform a process of comparing the alarm shutoff temperature of the transformer to be monitored, which is the value obtained by multiplying the temperature of the transformer acquired by the transformer temperature acquisition means by the alarm shutoff temperature coefficient of 0.97, with the alarm shutoff temperature (in the above case, 105°C, the above-mentioned maximum allowable temperature).

[0204] As mentioned above, in this embodiment, the alarm tripping temperature coefficient is set to 0.97, but the value of the alarm tripping temperature coefficient to be set can be set to an appropriate value for each of the types A, B, E, F, and H of the transformers to be monitored, taking into consideration each of the types A, B, E, F, and H, within a range that allows the object of the present invention to be appropriately achieved.

[0205] Furthermore, as described above, in this embodiment, the alarm tripping temperature is set to the same temperature as the maximum allowable temperature of the transformer to be monitored, but the alarm tripping temperature can be set to an appropriate temperature value within a range below the respective maximum allowable temperatures for the transformers to be monitored, taking into consideration the types A, B, E, F, and H, respectively, within a range that allows the object of the present invention to be appropriately achieved.

[0206] The digital power receiving / transformation fire control system of the present invention is configured as a computer system including a server computer, etc. Although not shown, this computer includes a CPU that performs control to realize the various functions of the system of the above-described embodiment in accordance with an operating system and predetermined installed or downloaded computer programs, a ROM that stores the operating system and various computer programs and serves as a storage unit for storing data necessary for the CPU to execute various control processes, a RAM and a hard disk that store data necessary for the CPU to execute processes and are also used as a work area where information can be rewritten by the CPU as needed, and information input / output units such as a communication interface, all of which are connected by the necessary bus lines.

[0207] The memory unit of the digital power receiving / transforming fire control system of the present invention, which is configured from a computer, stores the information and computer programs necessary to realize the functions of the digital power receiving / transforming fire control system of the present invention. The stored information includes the following information:

[0208] Information about the transformer being monitored (for example, information necessary to identify the transformer being monitored, information about the location where the transformer is installed and the electrical circuit in which it is installed, information about the location where the transformer is installed and the electrical circuit in which it is installed, the classification of each transformer being monitored (such as Class A, B, E, F, or H), the maximum allowable temperature of the transformer being monitored, the safety temperature coefficient and safety caution temperature set for the transformer being monitored, the alarm cutoff temperature coefficient and alarm cutoff temperature set for the transformer being monitored, etc.); information about multiple loads to which power is supplied via the electrical circuit in which the transformer being monitored is installed (for example, the name, type, and power consumption of the load, information necessary to identify each load, information about the relationship between each load and the transformer installed in the electrical circuit that supplies power to the load, information about the circuit breaker installed in the electrical circuit, information about whether the load is capable of automatic power cutoff, information about the load device control device that controls the load if the load is not capable of automatic power cutoff, etc.); Information about the building in which the monitored transformer is installed (for example, building name, structure, information about the location in the building where the monitored transformer is installed, information about the locations in the building where multiple loads to which power is supplied via the electrical circuit in which the monitored transformer is installed, information about the fire alarms installed in the building and their locations, information about the fire and disaster prevention panels installed in the building and their locations, etc.), information about the transformer temperature acquisition means (transformer temperature sensors) that grasp the temperature of the monitored transformer (for example, information identifying each transformer temperature acquisition means, information about the location where each transformer temperature acquisition means is installed, information about the relationship between each transformer whose temperature each transformer temperature acquisition means monitors, etc.), information about the person 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 (for example, the name and affiliation of the person in charge, information about the means of communication and contact information via the network when contacting or providing information to the person in charge).

[0209] The digital substation fire control system of the present invention, which is composed of the computer described above, is equipped with first transformer temperature comparison means, second transformer temperature comparison means, first alarm notification information output means, second alarm notification information output means, confirmation information acquisition and confirmation means, power supply automatic cutoff possibility determination means, first power supply cutoff means, second power supply cutoff means, and third power supply cutoff means, which perform the processing operations described above.

[0210] That is, the first transformer temperature comparison means, second transformer temperature comparison means, first alarm notification information output means, second alarm notification information output means, confirmation information acquisition confirmation means, power supply automatic cut-off possibility determination means, first power supply cut-off means, second power supply cut-off means, and third power supply cut-off means, which are arranged in a computer such as a server computer device, perform the above-mentioned processing under a predetermined computer program, and send cut-off instruction information to the above-mentioned power circuit breaker and load device control device (e.g., a computer) via a wired or wireless network arranged between the above-mentioned power circuit breaker and load device control device and the server computer device, thereby causing the above-mentioned processing operation to be performed.

[0211] The above-mentioned first alarm notification information output means and second alarm notification information output means in the server computer device perform the above-mentioned processing under a specified computer program, and the above-mentioned first alarm notification information and second alarm notification information are output to the above-mentioned staff terminal connected to the server computer device via a wired or wireless network.

[0212] 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 has been downloaded.

[0213] The person in charge terminal is connected to a computer system including a server computer that constitutes the digital power receiving / transforming 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.

[0214] The above-mentioned first transformer temperature comparison means, second lance temperature comparison means, first alarm notification information output means, second alarm notification information output means, confirmation information acquisition confirmation means, power supply automatic cut-off possibility determination means, first power supply cut-off means, second power supply cut-off means, third power supply cut-off means, etc. do not all need to be configured to be installed in a single device or equipment.

[0215] For example, a device or equipment having some of the above configurations may be installed in a power device, and this may be installed away from the power device and connected to another device or equipment consisting of a computer having other configurations via a wired or wireless network so that information can be exchanged.

[0216] 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 via a wired or wireless network 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 information can be exchanged.

[0217] In the above, the configuration may also include a server computer installed on the cloud among one or more other devices or equipment that are deployed at a location away from the power device, connected via a wired or wireless network, and that have some or the remaining configurations of the other configurations described above.

[0218] The present invention is not limited to the above-described embodiments, but can be modified in various ways within the technical scope grasped from the scope of the claims.

Claims

1. A monitoring system comprising: a transformer temperature acquisition means for acquiring the temperature of a transformer to be monitored that is disposed midway through each electric circuit going from the power source side to a plurality of loads; a first transformer temperature comparison means for comparing a monitored transformer safety factor temperature, which is a numerical value obtained by multiplying the temperature of the transformer acquired by the transformer temperature acquisition means by a safety temperature factor that is preset for each heat resistance class that is classified according to the heat resistance characteristics of the insulating material used in the monitored transformer, with a preset safety caution temperature; a first alarm notification information output means for outputting first alarm notification information together with information identifying the load to a staff terminal owned by a person in charge of managing the load to which power is supplied via the electric circuit in which the monitored transformer is disposed, when the first transformer temperature comparison means determines that the monitored transformer safety factor temperature has reached the safety caution temperature; and a confirmation information acquisition confirmation means for monitoring whether confirmation information confirming that the first alarm notification information has been acquired is returned from the staff terminal that has received the output of the first alarm notification information. The first alarm notification information output means continues to output the first alarm notification information to the person in charge terminal until the confirmation information acquisition and confirmation means confirms that the confirmation information has been returned.

2. A digital power receiving / substation fire control system as claimed in claim 1, further comprising: a second transformer temperature comparison means for comparing a monitored transformer alarm cutoff temperature, which is a value obtained by multiplying the temperature of the monitored transformer acquired by said transformer temperature acquisition means by an alarm cutoff temperature coefficient that is preset for each heat resistance class classified according to the heat resistance characteristics of the insulating material used in the monitored transformer, with a preset alarm cutoff temperature; and a second alarm notification information output means for, when said second transformer temperature comparison means determines that the monitored transformer safety coefficient temperature has reached the alarm cutoff temperature, outputting second alarm notification information together with information identifying the load to a staff terminal owned by a person in charge of managing the load to which power is supplied via the electric circuit in which the monitored transformer is installed, wherein said confirmation information acquisition confirmation means monitors whether confirmation information confirming that the second alarm notification information has been acquired is returned from the staff terminal that has received the output of the second alarm notification information, and said second alarm notification information output means continues to output the second alarm notification information to the staff terminal until said confirmation information acquisition confirmation means confirms that the confirmation information has been returned.

3. A digital power receiving / transforming fire control system as described in claim 2, comprising: a power supply automatic cutoff possibility determination means for determining whether the load to which power is supplied via the electric circuit in which the transformer being monitored is installed when the second alarm notification information output means outputs the second alarm notification information is a load to which automatic power supply cutoff is possible; a first power supply cutoff means for cutting off the power supply to the load determined by the power supply automatic cutoff possibility determination means to be capable of automatic power supply cutoff; and a second power supply cutoff means for cutting off the power supply to a load device control device controlling the load determined to be unable to automatically cut off the power supply when the power supply automatic cutoff possibility determination means determines that automatic power supply cutoff is not possible, and then cutting off the power supply to the load.

4. A digital power receiving / transforming fire control system as described in claim 3, further comprising a third power supply cut-off means that, when a fire alarm that is installed in the building in which the transformer is installed and that detects smoke, heat, or flames caused by a fire and sounds an alarm, sounds an alarm on a fire prevention panel installed in the building, cuts off the power supply to the load installed in the area in which the fire alarm that sounded the alarm is installed or to the load installed in the building.

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