Auxiliary power rapid switching system

Abstract

The present application proposes a plant power rapid switching system, which relates to the field of power supply technology, wherein the system includes: 10kV plant power section I incoming line switch 901, 10kV plant power section II incoming line switch 902, 10kV plant power section III incoming line switch 903, 10kV plant power section IV incoming line switch 904 are connected in parallel as points to be connected; each of the incoming line switches is provided with a corresponding switch closing lockout circuit, and the switch closing lockout circuit is provided with a parallel operation button, and the two ends of the parallel operation button are connected to the normally closed contacts of the switch; the parallel operation button is used to turn on the switch closing lockout circuit when multiple sections of plant power need to be connected in parallel for a short time. By allowing different busbars to be connected in parallel for a short time during the switching process, the operation steps are simplified, the plant power switching operation time is shortened, and the switching operation risk is reduced.

Description

Technical Field

[0001] The present application relates to the field of power supply technology, and in particular to a rapid power switching system for a factory. Background Art

[0002] The power station has multiple sections of auxiliary power busbars, which supply power to auxiliary generator equipment, lighting equipment, ventilation system, gate system, air compressor system, cooling water circulation system, and leakage drainage system in the main power plant. Each section of the busbar is used as a backup to improve the reliability of the auxiliary power system. The auxiliary power system has frequent and complex switching operations, and the operation is highly risky.

[0003] Since the voltage frequency phase deviation between different power supplies may cause a large impact current, the working power supply and the backup power supply are not allowed to run in parallel during the switching process to avoid damaging the equipment. Therefore, when switching the factory power bus, the power switch of a section of the bus is usually disconnected first, and then the other end of the bus supplies power to it. When switching the backup power supply to the working power supply, the backup power supply automatic switch should be turned on before the backup power switch is turned off. When switching the working power supply to the backup power supply, the backup power supply automatic switch should be turned off after the backup power switch is turned on. This operation task is heavy, the operation risk is high, and the reliability of factory power supply is reduced for a long time. Summary of the invention

[0004] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0005] To this end, the first purpose of this application is to propose a rapid power switching system for factory power supply.

[0006] The second objective of the present application is to provide an electronic device.

[0007] To achieve the above-mentioned purpose, the first embodiment of the present application proposes a plant power rapid switching system, comprising:

[0008] 10kV plant power section I incoming line switch 901, 10kV plant power section II incoming line switch 902, 10kV plant power section III incoming line switch 903, 10kV plant power section IV incoming line switch 904, multiple parallel operation buttons;

[0009] Among them, 10kV plant power section I incoming line switch 901, 10kV plant power section II incoming line switch 902, 10kV plant power section III incoming line switch 903, 10kV plant power section IV incoming line switch 904 are connected in parallel as waiting points;

[0010] Each of the incoming line switches is provided with a corresponding switch closing lockout circuit, the switch closing lockout circuit is provided with the parallel operation button, and both ends of the parallel operation button are connected to the normally closed contacts of the switch;

[0011] The parallel operation button is used to turn on the switch closing lock circuit when multiple sections of factory power need to be connected in parallel for a short time.

[0012] Optionally, the closing lockout circuit corresponding to the 10kV plant power section I incoming line switch 901 is connected in series with the normally closed position contacts of the two switches 947 and 912, and the parallel operation button is installed on the closing lockout circuit of the switch 901, and the parallel operation button crosses the normally closed contact of the switch 947 and is directly connected in series with the normally closed contact of the switch 912;

[0013] When short-term paralleling is required, the 10kVⅠ section standby 910 circuit breaker cabinet is locked with the standby automatic pressure plate, and then the parallel operation button is pressed to close the switch 901.

[0014] Optionally, the closing lockout circuit corresponding to the 10kV plant power section II incoming line switch 902 is connected in series with the normally closed position contacts of the two switches 920 and 927, and the parallel operation button is installed on the closing lockout circuit of the switch 902, and the parallel operation button crosses the normally closed contact of the switch 920 and is directly connected in series with the normally closed contact of the switch 927;

[0015] When short-term parallel connection is required, the 10kV II and III busbar 920 circuit breaker cabinet is locked with the self-throwing pressure plate, and the parallel operation button is pressed to close the switch 902.

[0016] Optionally, the closing lockout circuit corresponding to the 10kV plant power section III incoming line switch 903 is connected in series with the normally closed position contacts of the three switches 920, 930 and 937, and the parallel operation button is installed on the closing lockout circuit of the switch 903. The parallel operation button crosses the normally closed contacts of the switches 920 and 930 and is directly connected in series with the normally closed contact of the switch 937;

[0017] When short-term parallel connection is required, the 10kV II and III busbar 920 circuit breaker cabinet is locked with the standby automatic voltage plate, and then the parallel operation button is pressed to close the switch 903.

[0018] Optionally, the closing lockout circuit corresponding to the 10kV plant power section IV incoming line switch 904 is connected in series with the normally closed position contacts of the three switches 930, 947, and 945, and the parallel operation button is installed on the closing lockout circuit of the switch 904, and the parallel operation button crosses the normally closed contacts of the switches 930 and 947 and is directly connected in series with the normally closed contacts of the switches 945 and 962;

[0019] When short-term paralleling is required, the 10kVⅠ section standby 910 circuit breaker cabinet is locked with the standby automatic pressure plate, and then the parallel operation button is pressed to close the switch 904.

[0020] To achieve the above-mentioned purpose, a second aspect of the present application provides an electronic device, including: a processor, and a memory communicatively connected to the processor;

[0021] The memory stores computer-executable instructions;

[0022] The processor executes the computer-executable instructions stored in the memory to implement the system as described in any one of the first aspects.

[0023] The plant power rapid switching system provided in the present application simplifies the operating steps, shortens the plant power switching operation time, and reduces the switching operation risk by allowing different busbars to be connected in parallel for a short time during the switching process.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0026] Figure 1 A schematic diagram of the structure of a fast power switching system for a power plant provided in an embodiment of the present application;

[0027] Figure 2 A schematic diagram of the structure of a switch closing lockout circuit provided in an embodiment of the present application;

[0028] Figure 3 A schematic diagram of the structure of a switch closing lockout circuit provided in an embodiment of the present application;

[0029] Figure 4 A schematic diagram of the structure of a switch closing lockout circuit provided in an embodiment of the present application;

[0030] Figure 5 A schematic diagram of the structure of a switch closing lockout circuit provided in an embodiment of the present application;

[0031] Figure 6 An equivalent circuit diagram provided for this embodiment. DETAILED DESCRIPTION

[0032] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0033] The power station has a total of 6 sections of auxiliary power busbars, which supply power to auxiliary equipment of generators, lighting equipment, ventilation system, gate system, air compressor system, cooling water circulation system, leakage drainage system of power plant, etc. in the main power plant. Each section of busbar is used as a backup to improve the power supply reliability of the auxiliary power system. The switching operation of the auxiliary power system is frequent and complicated, and the operation is very risky.

[0034] Since the voltage frequency phase deviation between different power supplies may cause a large impact current, the working power supply and the backup power supply are not allowed to run in parallel during the switching process to avoid damaging the equipment. Therefore, when switching the factory power bus, the power switch of a section of the bus is usually disconnected first, and then the other end of the bus supplies power to it. When switching the backup power supply to the working power supply, the backup power supply automatic switch should be turned on before the backup power switch is turned off. When switching the working power supply to the backup power supply, the backup power supply automatic switch should be turned off after the backup power switch is turned on.

[0035] When the 10kV power supply of the power station is switched, the sectional switching connection adopts the 10kV system backup automatic switching device to automatically switch, and the connection switching section adopts the short-term power failure method to perform manual switching. When the 10kV power supply of the power station is used for short-term parallel operation for the connection switching section, it avoids the process that the operating personnel first adjust the 10kV bus to no-load operation (400V bus sectional switching connection), and then restore the feeder circuit breaker and 400V load one by one after the high-voltage power transformer power supply is restored.

[0036] For example, the 10kV II and III sections are connected and operated by the No. 3 high-voltage transformer substation. At this time, the 10kV plant power II bus and III section bus connection operation is converted to segmented operation, involving 11 operation tickets for 400V load operation mode adjustment and 10kV load operation mode adjustment operations. This operation is generally carried out during the unit maintenance period. The operation task is heavy, the operation risk is high, and the reliability of the plant power supply is reduced for a long time.

[0037] If the short-time parallel operation switching transformation of the 10kV plant power switching can be realized, the 10kV plant power switching time will be greatly shortened, the switching operation risk and the switching operation workload of the operating personnel will be reduced.

[0038] Under normal circumstances, the 10kV Ⅰ, Ⅱ, Ⅲ, Ⅳ busbars in the plant area are powered by the 15.75kV high-voltage plant transformers (1GB, 2GB, 3GB, 4GB) at the end of units 1, 2, 3, and 4, respectively, and operate in sections; the 10kV Ⅴ and Ⅵ busbars are powered by the external power grid. The 10kV Ⅱ and Ⅴ busbar interconnection circuit breakers, the 10kV plant power Ⅰ and Ⅵ busbar interconnection circuit breakers, and the 10kV plant power Ⅳ and Ⅵ busbar interconnection circuit breakers do not participate in the logic interlocking control, and should be in the closed state under normal operation.

[0039] The first group of 10kV factory power supply standby is composed of 10kV Ⅰ, Ⅳ, Ⅵ bus sections. The first automatic standby power supply control mode adopts external power priority, that is, when bus Ⅰ loses power, bus VI is the priority standby power supply, and when bus Ⅳ loses power, bus VI is the priority standby power supply. Among them, sections Ⅰ, Ⅵ and sections Ⅳ, Ⅵ are bright standby mode. The second automatic standby power supply control mode adopts internal power priority, that is, when bus Ⅰ loses power, bus Ⅳ is the priority standby power supply, and when bus Ⅳ loses power, bus Ⅰ is the priority standby power supply. Among them, sections Ⅰ, Ⅳ and sections Ⅰ, Ⅳ are dark standby mode.

[0040] The second group of 10kV factory power supply standby is composed of 10kV Ⅱ, Ⅲ, and Ⅴ busbars. The automatic standby power supply control mode adopts external power supply priority, that is, when the Ⅱ busbar loses power, the Ⅱ busbar is the priority standby power supply, and when the Ⅲ busbar loses power, the Ⅴ busbar is the priority standby power supply. Among them, the Ⅱ, Ⅴ and Ⅲ, Ⅴ standby are bright standby mode. The second automatic standby power supply control mode adopts internal power supply priority, that is, when the Ⅱ busbar loses power, the Ⅲ busbar is the priority standby power supply, and when the Ⅲ busbar loses power, the Ⅱ busbar is the priority standby power supply. Among them, the Ⅱ, Ⅲ and Ⅲ, Ⅱ standby are dark standby mode.

[0041] Figure 1 The structural diagram of a fast power switching system for a power plant provided in the embodiment of the present application is as follows: Figure 1 As shown, in this system, 10kV plant power section I incoming line switch 901, 10kV plant power section II incoming line switch 902, 10kV plant power section III incoming line switch 903, and 10kV plant power section IV incoming line switch 904 are used as points to be connected in parallel and are operated in parallel. Due to the wiring method of the power station unit system, there is no risk of asynchronous closing between the two power supply points to be connected in parallel. Therefore, the synchronous locking relay is not added, and an interlocking circuit composed of a newly added interlocking pressure plate and a circuit breaker position (the connecting circuit breaker opening position with the external power supply) is considered.

[0042] This transformation allows short-term parallel operation only for 10kV Ⅰ, Ⅱ, Ⅲ, Ⅳ sections of busbars when they are supplied by No. 1 high-voltage transformer, No. 2 high-voltage transformer, No. 3 high-voltage transformer, and No. 4 high-voltage transformer, respectively. Sections Ⅰ and Ⅳ run in parallel, and sections Ⅱ and Ⅲ run in parallel. The 10kV plant power control system has been transformed to allow short-term parallel operation of different buses during the switching process, thereby simplifying the operation steps, shortening the operation time, improving the power supply reliability of the 10kV plant power system, shortening the plant power switching operation time, and reducing the switching operation risk.

[0043] Figure 2 A schematic diagram of a switch closing lockout circuit provided in an embodiment of the present application is shown in FIG. Figure 2As shown, the closing lockout circuit corresponding to the 10kV plant power section I incoming switch 901 is connected in series with the normally closed position contacts of the two switches 947 and 912. Now, in order to achieve the purpose of short-term parallel closing of the 901 switch when section I is powered by section IV, it is necessary to modify the closing lockout circuit of the 901 switch, that is, to bypass the position lockout condition of the 947 switch, and to close the 901 switch when the 947 switch is closed. The parallel operation button is added to the closing lockout circuit of the 901 switch, and the parallel operation button bypasses the normally closed contact of the 947 switch and is directly connected in series with the normally closed contact of the 912 switch;

[0044] When short-term paralleling is required, the 10kVⅠ section standby 910 circuit breaker cabinet is locked with the standby automatic pressure plate, and then the parallel operation button is pressed to close the switch 901.

[0045] Figure 3 A schematic diagram of a switch closing lockout circuit provided in an embodiment of the present application is shown in FIG. Figure 3 As shown, the closing lockout circuit corresponding to the 10kV plant power section II incoming switch 902 is connected in series with the normally closed position contacts of the two switches 920 and 927, that is, the 902 switch can be closed only when the two switches 920 and 927 are in the open position. Now, in order to achieve the purpose of closing the 902 switch for a short time in parallel when the section II is connected by the power supply of the section III, the closing lockout circuit of the 902 switch needs to be modified, that is, the 920 switch position lockout condition is bypassed, and the 902 switch can also be closed when the 920 switch is closed.

[0046] The parallel operation button is installed on the closing lock circuit of switch 902, and the parallel operation button is directly connected in series with the normally closed contact of switch 927 across the normally closed contact of switch 920;

[0047] When short-term parallel connection is required, the 10kV II and III busbar 920 circuit breaker cabinet is locked with the self-throwing pressure plate, and the parallel operation button is pressed to close the switch 902.

[0048] Figure 4 A schematic diagram of a switch closing lockout circuit provided in an embodiment of the present application is shown in FIG. Figure 4 As shown, the closing lockout circuit corresponding to the 10kV plant power section III incoming switch 903 is connected in series with the normally closed position contacts of the three switches 920, 930, and 937, that is, the 903 switch can be closed only when the three switches 920, 930, and 937 are in the open position. Now, in order to achieve the purpose of closing the 903 switch for a short time in parallel when the three sections are connected with the power supply of section II or section IV. It is necessary to modify the closing lockout circuit of the 903 switch, that is, to cross the locking conditions of the two switch positions of 920 and 930, and the 903 switch can also be closed when the 920 or 930 switch is closed.

[0049] The parallel operation button is installed on the 903 switch closing lock circuit, and the parallel operation button is directly connected in series with the 937 switch normally closed contact across the 920 and 930 switch normally closed contacts;

[0050] When short-term parallel connection is required, the 10kV II and III busbar 920 circuit breaker cabinet is locked with the standby automatic voltage plate, and then the parallel operation button is pressed to close the switch 903.

[0051] Figure 5 A schematic diagram of a switch closing lockout circuit provided in an embodiment of the present application is shown in FIG. Figure 5 As shown, the closing lockout circuit corresponding to the 10kV plant power section IV incoming switch 904 is connected in series with the normally closed position contacts of the three switches 930, 947, and 945, that is, the 904 switch can only be closed when the three switches 930, 947, and 945 are in the open position. Now, in order to achieve the purpose of closing the 904 switch for a short time in parallel when the section IV is connected with the section I power supply, it is necessary to modify the closing lockout circuit of the 904 switch, that is, to cross the locking conditions of the two switch positions of 930 and 947, and the 904 switch can also be closed when the 930 or 947 switch is closed.

[0052] The parallel operation button is installed on the 904 switch closing lockout circuit, and the parallel operation button is directly connected in series with the 945 and 962 switch normally closed contacts across the 930 and 947 switch normally closed contacts;

[0053] When short-term paralleling is required, the 10kVⅠ section standby 910 circuit breaker cabinet is locked with the standby automatic pressure plate, and then the parallel operation button is pressed to close the switch 904.

[0054] Figure 6 An equivalent circuit diagram provided for this embodiment, such as Figure 6 As shown, for the convenience of calculation, the following equivalence and simplification are made:

[0055] 1. #3 high-voltage transformer, #2 high-voltage transformer and No. 2 main transformer branch are equivalent to a transformer with a capacity of 800kVA and a transformation ratio of 550 / √3 / 15.75;

[0056] 2. The short-circuit impedance of the equivalent transformer is the sum of the short-circuit impedances of the three transformers. Since the current flowing through the No. 2 main transformer is much smaller than the rated current value of the transformer, the voltage drop caused by the No. 2 main transformer is negligible, that is, the short-circuit impedance of the No. 2 main transformer is 0. When the #2 high-voltage transformer is used as a step-up transformer, the actual impedance is slightly greater than the nameplate impedance value.

[0057] 3. Ignore the transformer parallel admittance branch;

[0058] 4. Ignore power loss in impedance.

[0059] The main technical parameters are shown in Table 1.

[0060]

[0061]

[0062] Table 1

[0063] Transformer parallel considerations

[0064] 1. Equal transformation ratio. Different transformer ratios will result in different secondary voltages, which will also generate circulating currents in the secondary windings and occupy the capacity of the transformer, increasing the transformer's losses. The difference should not exceed ±0.5%.

[0065] 2. The connection group numbers must be the same. Different connection groups will cause voltage differences in the secondary windings of the parallel transformers, generating circulating currents inside the secondary side of the transformers.

[0066] 3. The capacity ratio of the two transformers should not exceed 3:1. Transformers with different capacities have different short-circuit voltages, resulting in unbalanced load distribution and uneconomical operation.

[0067] 4. Transformer impedance voltage. The transformer impedance voltage percentage is composed of reactance voltage drop and resistance voltage drop. It is numerically equal to the transformer impedance percentage, indicating the size of the transformer internal impedance. The impedance voltage percentage indicates the size of the transformer impedance voltage drop when the transformer is running at full load (rated load). It is of decisive significance for the size of the short-circuit current that will be generated when a short circuit occurs on the secondary side of the transformer. It is also of great significance to the transformer manufacturing price and the parallel operation of the transformer. It is also an important basis for considering the thermal stability and dynamic stability of the short-circuit current and the setting of relay protection.

[0068] 5. Transformer short-circuit voltage. The transformer short-circuit voltage percentage is the voltage when one side of the transformer is short-circuited and the other side is connected to the rated current. This voltage accounts for the percentage of its rated voltage. In fact, this voltage is the voltage drop of the leakage reactance of the transformer's energized side and the short-circuit side under the rated current. For transformers of the same capacity, the larger the reactance, the larger the short-circuit voltage percentage. For the same current, the transformer with large reactance will produce greater voltage loss. Therefore, the transformer with a large short-circuit voltage percentage has a greater reactance change rate.

[0069] Case Analysis

[0070] Transformer parallel operation load distribution calculation formula: ρ = S / UkΣ(Se / Uk)

[0071] Wherein: ρ represents the load factor, S represents the total load, Uk represents the short-circuit impedance, Se represents the rated capacity, Σ(Se / Uk)=800 / 0.12+90000 / 0.1413.

[0072] Example 1: The current flowing through the equivalent transformer when the actual total apparent power of the generator is 185470 kVA.

[0073] Equivalent transformer load factor: ρ1 = (185470 / 3) / (0.12 × 643609.3) = 0.8;

[0074] Transformer No. 3 load factor: ρ2 = (185470 / 3) / (0.1413 × 643609.3) = 0.68;

[0075] The total power flowing through the equivalent transformer side: S1 = ρ1S1 = 0.8 × 800 × 3 = 1920 kVA;

[0076] Equivalent transformer 10kV side current: I1 = 1920 / 1.732 / 10.5 = 105.5A;

[0077] The power flowing through the No. 3 main transformer side: S2 = ρ2S2 = 0.68 × 3 × 90000 = 183600 kVA.

[0078] Example 2: Calculate the maximum apparent power of the generator when the plant power is connected in parallel, taking the plant transformer capacity as a constraint.

[0079] Equivalent transformer load factor: ρ1=1;

[0080] Total apparent power of generator: S = 0312*643609.3*3 = 231699.6 kVA;

[0081] Transformer No. 3 load factor: ρ2 = (231699.3 / 3) / (0.1413*643609.3) = 0.85;

[0082] The power flowing through the No. 3 main transformer side: S2 = ρ2S2 = 0.85 × 3 × 90000 = 229500 kVA.

[0083] Example 3: Calculate the maximum apparent power of the generator when the plant power is connected in parallel, with half of the plant transformer capacity as the constraint.

[0084] Equivalent transformer load factor: ρ1 = 0.5;

[0085] Total apparent power of generator: S = 0.5 × 0.12 × 643609.3 × 3 = 231699.6 kVA;

[0086] Transformer No. 3 load factor: ρ2 = (15849.7 / 3) / (0.1413*643609.3) ≈ 0.425;

[0087] The power flowing through the No. 3 main transformer side is: S2=ρ2S2=0.425×3×90000=114750kVA.

[0088] Test scheme (taking the parallel connection of busbar sections II and III as an example)

[0089] 1. Unit 2 is shut down, while Unit 3 is operating normally;

[0090] 2.10kV plant power section III busbar operates normally;

[0091] 3. The maintenance of the 10kV plant power section II busbar has been completed, and all circuit breakers are in the open position;

[0092] 4. Close the 10kV plant power section II and III busbar interconnection circuit breaker 920;

[0093] 5. Observe and record the current changes of 920 and 903 circuit breakers;

[0094] 6. Close the 10kV plant power section II busbar incoming circuit breaker 902;

[0095] 7. Observe and record the current changes of 903 circuit breaker;

[0096] 8. Restore the operating mode before the test.

[0097] Precautions

[0098] 1. The main transformers of units 2 and 3 must be incorporated into the 500kV system;

[0099] 2. Closely monitor the changes in system power flow to avoid affecting the safety and stability of the system;

[0100] 3. The unit output should be increased step by step to avoid burning the plant transformer due to insufficient plant transformer capacity;

[0101] 4. The #2 plant transformer is used as a step-down transformer for step-up. It is not suitable to operate for a long time. During the test, the operation of the #2 plant transformer must be closely monitored;

[0102] 5. Before parallel connection, check that the transformation ratios on both sides are equal. Different transformation ratios of transformers will lead to different secondary voltages, which will generate circulating currents in the secondary windings and occupy the capacity of the transformer, increasing the transformer losses. The difference should not exceed ±0.5% at most;

[0103] 6. Before parallel connection, check that the connection groups on both sides must be the same. Different connection groups will cause voltage difference in the secondary winding of the parallel transformer, generating circulating current inside the secondary side of the transformer;

[0104] 7. After parallel connection, the short-circuit impedances of the transformers on both sides should be as close as possible. If the short-circuit impedances differ too much, it will cause overload on the side with smaller short-circuit impedance. It is recommended that the difference should not exceed 10%;

[0105] 8. Important load transfer should be done before the test to avoid failures during the test and affect the operation of the unit;

[0106] 9. During the de-looping process after the 10kV system is paralleled, if the switch cannot disconnect the de-looping switch, the parallel system should be switched to segmented operation by disconnecting other switches in time.

[0107] The short-time parallel test of the 2nd and 3rd sections of the 10kV power plant verified that the transformation of the short-time parallel secondary circuit was correct and met the design requirements. Through actual operation verification, the use of the short-time parallel function has reduced the power adjustment of the unit maintenance plant from 7 operation tickets to 2 operation tickets, and the switching operation has been shortened from the original 5 hours to 32 minutes. The operation effect has been greatly improved, and the safety risks brought by the long-term operation of the operating personnel have been further reduced. The test data proves the feasibility of the short-time parallel operation of the 10kV power plant proposed in the early stage. At the same time, through theoretical analysis, the short-time parallel switching conditions of the power plant are calculated. However, in order to ensure that each equipment maintains safe and stable operation after the 10kV power plant bus is paralleled, the safety and stability margin of the high power plant transformer should be considered when switching to the parallel operation mode.

[0108] In order to implement the above embodiments, the present application also proposes an electronic device, comprising: a processor, and a memory communicatively connected to the processor; the memory stores computer-executable instructions; the processor executes the computer-executable instructions stored in the memory to implement the system provided by the above embodiments.

[0109] In order to implement the above embodiments, the present application also proposes a computer-readable storage medium, in which computer-executable instructions are stored. When the computer-executable instructions are executed by a processor, they are used to implement the system provided by the above embodiments.

[0110] In order to implement the above embodiments, the present application also proposes a computer program product, including a computer program, which implements the system provided by the above embodiments when executed by a processor.

[0111] The collection, storage, use, processing, transmission, provision and disclosure of user personal information involved in this application are in compliance with relevant laws and regulations and do not violate public order and good morals.

[0112] It should be noted that personal information from users should be collected for legitimate and reasonable purposes and should not be shared or sold outside of these legitimate uses. In addition, such collection / sharing should be carried out after receiving the user's informed consent, including but not limited to notifying the user to read the user agreement / user notice and sign the agreement / authorization including authorization of relevant user information before the user uses the function. In addition, any necessary steps should be taken to protect and safeguard access to such personal information data and ensure that others who have access to personal information data comply with its privacy policy and procedures.

[0113] The present application is expected to provide an implementation scheme for users to selectively block the use or access of personal information data. That is, the present disclosure is expected to provide hardware and / or software to prevent or block access to such personal information data. Once the personal information data is no longer needed, the risk can be minimized by limiting data collection and deleting the data. In addition, when applicable, such personal information is de-identified to protect the privacy of the user.

[0114] In the description of the aforementioned embodiments, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0115] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0116] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0117] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute the instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purpose of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), a fiber optic device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0118] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0119] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0120] In addition, each functional unit in each embodiment of the present application may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0121] The storage medium mentioned above may be a read-only memory, a magnetic disk or an optical disk, etc. Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. A person of ordinary skill in the art may change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A rapid power switching system for a factory, characterized in that: include: 10kV plant power section I incoming line switch 901, 10kV plant power section II incoming line switch 902, 10kV plant power section III incoming line switch 903, 10kV plant power section IV incoming line switch 904, multiple parallel operation buttons; Among them, 10kV plant power section I incoming line switch 901, 10kV plant power section II incoming line switch 902, 10kV plant power section III incoming line switch 903, 10kV plant power section IV incoming line switch 904 are connected in parallel as waiting points; Each of the incoming line switches is provided with a corresponding switch closing lockout circuit, the switch closing lockout circuit is provided with the parallel operation button, and both ends of the parallel operation button are connected to the normally closed contacts of the switch; The parallel operation button is used to turn on the switch closing lock circuit when multiple sections of factory power need to be connected in parallel for a short time.

2. The system according to claim 1, characterized in that The closing lockout circuit corresponding to the 10kV plant power section I incoming line switch 901 is connected in series with the normally closed position contacts of the two switches 947 and 912. The parallel operation button is installed on the closing lockout circuit of the switch 901. The parallel operation button crosses the normally closed contact of the switch 947 and is directly connected in series with the normally closed contact of the switch 912. When short-term paralleling is required, the 10kVⅠ section standby 910 circuit breaker cabinet is locked with the standby automatic pressure plate, and then the parallel operation button is pressed to close the switch 901.

3. The system according to claim 1, characterized in that The closing lockout circuit corresponding to the 10kV plant power section II incoming line switch 902 is connected to the normally closed position contacts of the two switches 920 and 927 in series, and the parallel operation button is installed on the closing lockout circuit of the switch 902. The parallel operation button crosses the normally closed contact of the switch 920 and is directly connected in series with the normally closed contact of the switch 927; When short-term parallel connection is required, the 10kV II and III busbar 920 circuit breaker cabinet is locked with the self-throwing pressure plate, and the parallel operation button is pressed to close the switch 902.

4. The system according to claim 1, characterized in that The closing lockout circuit corresponding to the 10kV plant power section III incoming line switch 903 is connected in series with the normally closed position contacts of the three switches 920, 930 and 937. The parallel operation button is installed on the closing lockout circuit of the switch 903. The parallel operation button crosses the normally closed contacts of the switches 920 and 930 and is directly connected in series with the normally closed contact of the switch 937. When short-term parallel connection is required, the 10kV II and III busbar 920 circuit breaker cabinet is locked with the standby automatic voltage plate, and then the parallel operation button is pressed to close the switch 903.

5. The system according to claim 1, characterized in that The closing lockout circuit corresponding to the 10kV plant power section IV incoming line switch 904 is connected in series with the normally closed position contacts of the three switches 930, 947, and 945. The parallel operation button is installed on the closing lockout circuit of the 904 switch. The parallel operation button crosses the normally closed contacts of the switches 930 and 947 and is directly connected in series with the normally closed contacts of the switches 945 and 962. When short-term paralleling is required, lock the standby automatic pressure plate on the 10kVⅠ section standby 910 circuit breaker cabinet, and then press the parallel operation button to close the switch 904.

6. An electronic device, characterized in that: include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the system according to any one of claims 1 to 5.

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