Loop-based electrical anti-misoperation logical operation method

Abstract

The invention relates to the technical field of electrics, in particular to an electrical anti-misoperation logical operation method based on a loop. Comprising an inference engine and a knowledge base, the knowledge base is additionally provided with a loop field and a same loop formed by directly connecting loops with different stations and different names between a plurality of transformer substations and switch rooms through lines, the loop is used as a parameter of logic operation of the inference engine, and the inference engine concepts data according to the parameter in the knowledge base to find a solution; a logic library is eliminated, loop fields are added in a knowledge base, manual editing and processing are not needed, and the problems that editing efficiency is low, multiple substations and switch rooms are subjected to combined control, device numbers are repeated, and the logic library content is huge are solved.

Description

Technical Field

[0001] This invention relates to the field of electrical technology, and in particular to a circuit-based electrical anti-misoperation logic operation method. Background Technology

[0003] The existing microcomputer-based anti-misoperation operating system consists of three parts: an inference engine, a knowledge base, and a logic library. The logic library is compiled by specially trained technicians based on the wiring conditions of the substation and switchgear room, for each controlled device such as switch, disconnector, handcart, grounding point, and grounding disconnector. It has a certain level of technical sophistication but suffers from the following shortcomings:

[0004] Each substation and switch room requires its own logic library, which is not universal and has low efficiency. The provided primary system diagram can only display the status information of the controlled equipment. In application scenarios where multiple substations and switch rooms are controlled together and there are duplicate equipment numbers in each substation and switch room, the logic library content is huge. When there are additions, decommissionings, or changes in wiring methods, not only the logic of the added, decommissioned, or changed equipment needs to be modified, but also the logic of the equipment associated with these devices needs to be modified. With one logic library per station, logic verification relies on manual review of the logic library text, which is labor-intensive and inefficient. Verification by simulated operation can only check the correctness of a portion of the logic.

[0005] Therefore, this application provides a circuit-based electrical anti-misoperation logic operation method to solve the problems mentioned in the background art. Summary of the Invention

[0006] The purpose of this invention is to provide a circuit-based electrical anti-misoperation logic operation method, which eliminates the logic library, adds a circuit field to the knowledge base, eliminates the need for manual editing and processing, and solves the problems of low editing efficiency, multiple substations and switch rooms being combined for control with duplicate equipment numbers, and the large content of the logic library.

[0007] To solve the above-mentioned technical problems, the present invention provides a circuit-based electrical anti-misoperation logic operation method, including an inference engine and a knowledge base. The knowledge base adds a circuit field and the same circuit formed by direct line connection between multiple substations and switch rooms, which are different stations and different names of circuits, as parameters for the logic operation of the inference engine. The inference engine conceives a solution based on the parameters in the knowledge base.

[0008] The technical concept of an inference engine includes the following steps:

[0009] S1. Based on the electrical connection relationship between devices such as disconnectors, handcarts, drop-out fuses, grounding disconnectors, temporary grounding points, and cabinet doors, expressed through circuits, the interlocking logic is implemented to prevent sealing of grounding wires while energized, to prevent closing disconnectors with grounding wires connected to energized equipment, and to prevent accidental entry into energized compartments, according to the mutual exclusion logic relationship between disconnectors and other isolation devices and connected grounding devices.

[0010] S2. Use different colors to differentiate the operation mode of the primary system diagram;

[0011] S3. Calculate the number of switches on each circuit, classify them into single switches, multiple switches, and no switches on both sides, and perform logic operations when opening and closing the knife switch, switching the handcart, and disconnecting the drop-out fuse to prevent operation under load.

[0012] A further improvement to the technical solution of the present invention is that step S1 includes the following steps:

[0013] S1.1 Before closing the grounding switch, sealing the temporary grounding wire, and opening the cabinet door, take the circuit where the grounding switch, temporary grounding point, and cabinet door are located as objects and check whether the switch, handcart, and drop-out fuse connected to the circuit are all disconnected. If any of the latter devices are in the closed position, this operation is prohibited.

[0014] S1.2 When performing the above S1.1 operation, after checking that there is no misoperation in this substation and switch room, it is also necessary to check whether there is a line in the circuit where the grounding switch, temporary grounding point, and network cabinet door are located, and whether the line is connected to other substations or switch rooms. If there is a connection, the S1.1 logic check operation is performed on the circuit connected to the other side of the line.

[0015] S1.3 Before closing the grounding switch, sealing the temporary grounding wire, and opening the cabinet door, take the circuit where the grounding switch, temporary grounding point, and cabinet door are located as the object. If the circuit is equipped with a live display device, you need to check that there is no power at the live display device before you can carry out this operation.

[0016] S1.4 Before closing the disconnect switch, handcart, and engaging the drop-out protection, check whether the grounding disconnect switches on both sides of the circuit are open, whether the temporary grounding wires have been removed, and whether the cabinet door is closed. If there are grounding devices or the cabinet door is not locked, this operation is prohibited.

[0017] S1.5 When performing the above S1.4 operation, after checking that there is no misoperation in this substation or switch room, it is also necessary to check whether there are lines on both sides of the disconnect switch, handcart, and drop-out fuse, and whether the lines are connected to other substations or switch rooms. If there are connections, the S1.4 logic check operation is performed on the circuit connected to the other side of the line.

[0018] A further improvement to the technical solution of the present invention is that step S2 includes the following steps:

[0019] S2.1 In circuits where disconnectors, handcarts, and drop-out fuses are connected, and where switches, main transformers, grounding points, grounding disconnectors, busbars, live display devices, capacitors, transformers, lines, surge arresters, etc., are located, they shall be displayed in colors other than black and white. The coils of each voltage level of the main transformer shall be displayed in different colors, and the neutral point grounding part shall be displayed in blue.

[0020] S2.2 After the temporary grounding point is sealed with the grounding wire and the grounding switch is closed, the circuit where the grounding equipment is located is taken as the object. The corresponding side components of the switch, handcart, and drop-out fuse of the equipment are connected across the main transformer. The switches, busbars, live display devices, capacitors, transformers, lines, surge arresters and other equipment on the circuit are all displayed in black or white.

[0021] S2.3 When the handcart is pulled out to the maintenance position, the equipment inside the car displays black or white. A further improvement to the technical solution of this invention is that step S3 includes the following steps:

[0022] S3.1 There is a switch inside the handcart. Operation is allowed when the switch is off, and operation is prohibited when the switch is off.

[0023] S3.2 When there is only one switch on each side of the circuit of the knife switch and the drop-out fuse, operation is allowed when either switch is open, and operation is prohibited when both switches are closed.

[0024] S3.3 When there is only one switch on one side of the circuit of the knife switch and drop-out fuse, the switch is open and operation is allowed; otherwise, operation is prohibited.

[0025] S3.4 Operation is permitted when there are no switches on either side of the load switch circuit;

[0026] S3.5 When there are no switches on either side of the circuits of the disconnector, handcart, and drop-out fuse, it is permissible to operate if the circuit on one side that is being bridging is not bridging any other disconnectors, handcarts, or drop-out fuses, and there are no main transformers, lines, capacitors, or multiple substations or distribution transformers present. Otherwise, operation is prohibited.

[0027] By adopting the above technical solution, the present invention has the following beneficial effects:

[0028] 1. This invention provides a circuit-based electrical anti-misoperation logic operation method. This logic operation method is a general algorithm based on the positional relationship between interlocking points using circuits as the medium. The circuit, as the medium, expresses all the connection relationships between controlled equipment such as switches, disconnectors, handcarts, drop-out fuses, grounding points, grounding disconnectors, and cabinet doors, and busbars, main transformers, live display devices, capacitors, transformers, lines, surge arresters, etc., and displays them in different colors under different operating modes. This allows the primary system diagram to not only display the position information of controlled equipment but also the operating mode of all equipment. This differentiated display method can serve as a means to check the correctness of circuit settings, with high verification efficiency. Furthermore, in the event of additions, decommissioning, or changes in wiring methods, only the knowledge base information of these devices needs to be added, deleted, or modified.

[0029] 2. The present invention provides a circuit-based electrical anti-misoperation logic operation method. This logic operation method is applicable to main grid substations. While realizing the basic function of microcomputer interlocking of all station equipment, it can provide a simple, fast and consistent verification function for the correctness of input information through the differentiated color display of the primary system diagram. It also provides users with a fast and intuitive operation mode management tool and a primary system diagram management tool.

[0030] 3. The present invention provides a circuit-based electrical anti-misoperation logic operation method. This logic operation method is also applicable to the microcomputer interlocking of urban distribution network switch rooms, lines, pole-mounted switches, box-type substations, and transformer stations. It can configure interlocking keys for all distribution network equipment in a city as a whole or divided into several areas.

[0031] 4. The present invention provides a circuit-based electrical anti-misoperation logic operation method. This logic operation method is applicable to the anti-misoperation function of urban power distribution network electrical equipment. It can also adapt to the environment of frequent modification of knowledge base caused by the large number and complexity of urban power distribution network electrical equipment expansion and renovation work, ensuring economical and reliable operation. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 Flowchart of the subroutine for locating power transmission equipment in substations and switch rooms;

[0034] Figure 2 Flowchart of the subroutine for locating grounding devices in substations and switch rooms;

[0035] Figure 3 Flowchart of procedure for preventing the closing (protective) grounding switch while energized;

[0036] Figure 4 Flowchart of procedure to prevent live grounding wire sealing;

[0037] Figure 5 Flowchart for preventing the opening of the power supply cabinet door while it is energized;

[0038] Figure 6 Flowchart of procedure for preventing power supply by closing disconnect switch with grounding wire;

[0039] Figure 7 Flowchart of procedure for preventing the handcart from being powered on with the grounding wire connected;

[0040] Figure 8 Flowchart of the procedure for preventing power loss when grounded wire is connected to the drop fuse;

[0041] Figure 9 Here is the flowchart for the load calculation subroutine;

[0042] Figure 10 Flowchart for preventing the opening and closing of disconnect switches under load;

[0043] Figure 11 Flowchart for preventing the operation of switching on and off the truck under load;

[0044] Figure 12 Flowchart of the procedure for preventing drop-out insurance under load. Detailed Implementation

[0045] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a bridging connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0048] The present invention will be further explained below with reference to specific embodiments.

[0049] A circuit-based electrical anti-misoperation logic operation method includes an inference engine and a knowledge base. The knowledge base adds a circuit field and the same circuit formed by direct line connection between multiple substations and switch rooms, which are different stations and different names of circuits, as parameters for the logic operation of the inference engine. The inference engine uses the parameters in the knowledge base to conceive the data in order to find a solution.

[0050] This logical operation method is a general algorithm based on the positional relationships between interlocking points mediated by loops. The loop, acting as a medium, expresses all the connection relationships between controlled equipment such as switches, disconnectors, handcarts, drop-out fuses, grounding points, grounding disconnectors, and cabinet doors, and busbars, main transformers, live display devices, capacitors, transformers, lines, and surge arresters. Different colors are used to display these relationships under different operating modes, allowing the primary system diagram to not only show the location information of controlled equipment but also the operating modes of all associated equipment. This differentiated display method can serve as a means of checking the correctness of loop settings, offering high verification efficiency. Furthermore, in cases of additions, decommissioning, or changes in wiring methods, only the knowledge base information of these devices needs to be added, deleted, or modified.

[0051] The technical concept of an inference engine includes the following steps:

[0052] S1. Based on the electrical connection relationship between devices such as disconnectors, handcarts, drop-out fuses, grounding disconnectors, temporary grounding points, and cabinet doors, expressed through circuits, the interlocking logic is implemented to prevent the grounding wire from being sealed while energized (closing the grounding disconnector), to prevent the disconnector from being energized while energized, and to prevent accidental entry into energized compartments, according to the mutual exclusion logic relationship between the disconnectors and other isolation devices and the connected grounding devices.

[0053] S2. Use different colors to differentiate the operation mode of the primary system diagram;

[0054] S3. Calculate the number of switches on each circuit, classify them into single switches, multiple switches, and no switches on both sides, and perform logic operations when opening and closing the knife switch, switching the handcart, and disconnecting the drop-out fuse to prevent operation under load.

[0055] Step S1 includes the following steps:

[0056] S1.1 Before closing the grounding switch, sealing the temporary grounding wire, and opening the cabinet door, take the circuit where the grounding switch, temporary grounding point, and cabinet door are located as objects and check whether the switch, handcart, and drop-out fuse connected to the circuit are all disconnected. If any of the latter devices are in the closed position, this operation is prohibited.

[0057] S1.2 When performing the above S1.1 operation, after checking that there is no misoperation in this substation and switch room, it is also necessary to check whether there is a line in the circuit where the grounding switch, temporary grounding point, and network cabinet door are located, and whether the line is connected to other substations or switch rooms. If there is a connection, the S1.1 logic check operation is performed on the circuit connected to the other side of the line.

[0058] S1.3 Before closing the grounding switch, sealing the temporary grounding wire, and opening the cabinet door, take the circuit where the grounding switch, temporary grounding point, and cabinet door are located as the object. If the circuit is equipped with a live display device, you need to check that there is no power at the live display device before you can carry out this operation.

[0059] S1.4 Before closing the disconnect switch, handcart, and engaging the drop-out protection, check whether the grounding disconnect switches on both sides of the circuit are open, whether the temporary grounding wires have been removed, and whether the cabinet door is closed. If there are grounding devices or the cabinet door is not locked, this operation is prohibited.

[0060] S1.5 When performing the above S1.4 operation, after checking that there is no misoperation in this substation or switch room, it is also necessary to check whether there are lines on both sides of the disconnect switch, handcart, and drop-out fuse, and whether the lines are connected to other substations or switch rooms. If there are connections, the S1.4 logic check operation is performed on the circuit connected to the other side of the line.

[0061] Step S2 includes the following steps:

[0062] S2.1 In circuits where disconnectors, handcarts, and drop-out fuses are connected, and where switches, main transformers, grounding points, grounding disconnectors, busbars, live display devices, capacitors, transformers, lines, surge arresters, etc., are located, they shall be displayed in a specified color (red, dark red, etc., colors other than black and white). The coils of each voltage level of the main transformer shall be displayed in different colors, and the neutral point grounding part shall be displayed in blue.

[0063] S2.2 After the temporary grounding point is sealed with the grounding wire and the grounding switch is closed, the circuit where the grounding equipment is located is taken as the object. The corresponding side components of the switch, handcart, and drop-out fuse of the equipment are connected across the main transformer. The switches, busbars, live display devices, capacitors, transformers, lines, surge arresters and other equipment on the circuit are all displayed in black or white.

[0064] S2.3 When the handcart is pulled out to the maintenance position, the equipment inside the car will display in black or white.

[0065] Step S3 includes the following steps:

[0066] S3.1 There is a switch inside the handcart. Operation is allowed when the switch is off, and operation is prohibited when the switch is off.

[0067] S3.2 When there is only one switch on each side of the circuit of the knife switch and the drop-out fuse, operation is allowed when either switch is open, and operation is prohibited when both switches are closed.

[0068] S3.3 When there is only one switch on one side of the circuit of the knife switch and drop-out fuse, the switch is open and operation is allowed; otherwise, operation is prohibited.

[0069] S3.4. Operation is permitted when there are no switches on either side of the circuit of the load switch (a disconnector that is allowed to operate under load);

[0070] S3.5 When there are no switches on either side of the circuits of the disconnector, handcart, and drop-out fuse, it is permissible to operate if the circuit on one side that is being bridging is not bridging any other disconnectors, handcarts, or drop-out fuses, and there are no main transformers, lines, capacitors, or multiple substations or distribution transformers present. Otherwise, operation is prohibited.

[0071] A circuit-based electrical anti-misoperation logic operation method is proposed. This method is applicable to main grid substations. While implementing the basic function of microcomputer interlocking for all substation equipment, it provides simple, fast, and consistent verification of the correctness of entered information through differentiated color displays on the primary system diagram. It also provides users with fast and intuitive operation mode management tools and primary system diagram management tools. This logic operation method is also applicable to microcomputer interlocking of switch rooms, lines, pole-mounted switches, box-type substations, and transformer platforms in urban distribution networks. It can configure interlocking keys for all distribution network equipment in a city as a whole or divided into several areas. When applied to the anti-misoperation function of urban distribution network electrical equipment, this logic operation method can also adapt to the environment of frequent knowledge base modifications caused by the numerous and complex expansion and renovation projects of urban distribution network electrical equipment, ensuring economical and reliable operation.

[0072] like Figure 1 As shown, in this embodiment, the steps of the subroutine for locating power transmission equipment in the substation and switch room are as follows:

[0073] P1: Start sub-procedure.

[0074] P2: Obtain the name N of the substation and switch room of the power transmission equipment to be checked, and the name m of the circuit to be checked.

[0075] P3: Return content f is set to blank.

[0076] P4: In the N substation and switch room, traverse all disconnectors. If one of the disconnector's jumper circuits is m and the disconnector is in the closed position, add its name to the return content f.

[0077] P5: In the N substation and switch room, traverse all handcarts. If one of the handcarts is connected to a circuit m and the handcart is in the closed position, add its name to the return content f.

[0078] P6: In substation N and switch room, traverse all drop-out fuses. If one of the drop-out fuse jumper circuits is m and the drop-out fuse is in the activated position, add its name to the return content f.

[0079] P7: Returns content f, which is the device that may be supplying power to m.

[0080] P8: End sub-procedure.

[0081] like Figure 2 As shown, in this embodiment, the steps of the subroutine for locating grounding devices in the substation and switch room are as follows:

[0082] P1: Start sub-procedure.

[0083] P2: Obtain the name N of the substation and switch room of the grounding equipment to be checked, and the name m of the circuit to be checked.

[0084] P3: Return content f is set to blank.

[0085] P4: In the N substation and switch room, traverse all grounding switches. If the grounding switch circuit is m, it is not a working ground, and the grounding switch is in the closed position, add its name to the return content f.

[0086] P5: Traverse all temporary grounding points in the N substation and switch room. For each grounding point with a grounding loop of m and a sealed grounding wire, add its name to the return content f.

[0087] P6: In substation N and switch room, traverse all network cabinet doors. If one of the network cabinet door circuits is m and the network cabinet door is in the open state, add its name to the return content f.

[0088] P7: Returns content f, which is the device that may have caused m to be grounded.

[0089] P8: End sub-procedure.

[0090] like Figure 3 As shown, in this embodiment, the steps of the procedure for preventing the grounding switch from closing while energized (for protection) are as follows:

[0091] P1: Begin.

[0092] P2: Obtain the name N of the substation and switch room, and the name m of the grounding switch circuit.

[0093] P3: Return content f is set to blank.

[0094] P4: Execute the "Find Power Supply Equipment Subprocess".

[0095] P5: Is there any content returned? If yes, execute command P14; if no, execute command P6.

[0096] P6: Is there a line in the m loop? If yes, execute command P7; if no, execute command P11.

[0097] P7: Is there a connection on the line? If yes, execute command P8; otherwise, execute command P11.

[0098] P8: Get the name n of the substation and switch room of the connected object, and the name M of the circuit on the opposite side of the line.

[0099] P9: Execute the "Find Power Supply Equipment Subprocess".

[0100] P10: Is there any content returned? If yes, execute command P14; if no, execute command P11.

[0101] P11: Does the m circuit have a live indicator? If yes, execute command P12; if no, allow operation and end.

[0102] P12: Obtain the value of the live display device for the m-circuit.

[0103] P13: Is there power? If yes, execute command P14; if no, allow operation and end.

[0104] P14: Operation prohibited, return to the power supply equipment content f.

[0105] P15: End.

[0106] like Figure 4 As shown, in this embodiment, the steps for preventing live grounding wire sealing are as follows:

[0107] P1: Begin.

[0108] P2: Obtain the name N of the substation and switch room, and the name m of the grounding point circuit.

[0109] P3: Return content f is set to blank.

[0110] P4: Execute the "Find Power Supply Equipment Subprocess".

[0111] P5: Is there any content returned? If yes, execute command P14; if no, execute command P6.

[0112] P6: Is there a line in the m loop? If yes, execute command P7; if no, execute command P11.

[0113] P7: Is there a connection on the line? If yes, execute command P8; otherwise, execute command P11.

[0114] P8: Get the name n of the substation and switch room of the connected object, and the name M of the circuit on the opposite side of the line.

[0115] P9: Execute the "Find Power Supply Equipment Subprocess".

[0116] P10: Is there any content returned? If yes, execute command P14; if no, execute command P11.

[0117] P11: Does the m circuit have a live indicator? If yes, execute command P12; if no, allow operation and end.

[0118] P12: Obtain the value of the live display device for the m-circuit.

[0119] P13: Is there power? If yes, execute command P14; if no, allow operation and end.

[0120] P14: Operation prohibited, return to the power supply equipment content f.

[0121] P15: End.

[0122] like Figure 5 As shown in this embodiment, the steps of the procedure to prevent opening the power supply cabinet door while it is energized (to prevent accidental entry into the energized compartment) are as follows:

[0123] P1: Begin.

[0124] P2: Get the name N of the substation and switch room, and the name m of the gate circuit.

[0125] P3: Return content f is set to blank.

[0126] P4: Execute the "Find Power Supply Equipment Subprocess".

[0127] P5: Is there any content returned? If yes, execute command P14; if no, execute command P6.

[0128] P6: Is there a line in the m loop? If yes, execute command P7; if no, execute command P11.

[0129] P7: Is there a connection on the line? If yes, execute command P8; otherwise, execute command P11.

[0130] P8: Get the name n of the substation and switch room of the connected object, and the name M of the circuit on the opposite side of the line.

[0131] P9: Execute the "Find Power Supply Equipment Subprocess".

[0132] P10: Is there any content returned? If yes, execute command P14; if no, execute command P11.

[0133] P11: Does the m circuit have a live indicator? If yes, execute command P12; if no, allow operation and end.

[0134] P12: Obtain the value of the live display device for the m-circuit.

[0135] P13: Is there power? If yes, execute command P14; if no, allow operation and end.

[0136] P14: Operation prohibited, return to the power supply equipment content f.

[0137] P15: End.

[0138] like Figure 6 As shown, in this embodiment, the steps for preventing the energization of the disconnect switch with a grounding wire are as follows:

[0139] P1: Begin.

[0140] P2: Obtain the name N of the substation and switch room where the disconnect switch is located, and the names m1 and m2 of the jumper circuits.

[0141] P3: Return content f is set to blank.

[0142] P4: N, m1 and N, m2 respectively execute the "find grounding device sub-process".

[0143] P5: Is there any content returned? If yes, execute command P11; if no, execute command P6.

[0144] P6: Are there lines in the m1 and m2 circuits? If yes, execute command P7; if no, allow the operation and end.

[0145] P7: Is there a connection on the line? If yes, execute command P8; if no, allow the operation and end.

[0146] P8: Get the name n of the substation and switch room of the connected object, and the name M of the circuit on the opposite side of the line.

[0147] P9: Execute the "Find Grounding Device Subprocess".

[0148] P10: Is there any content returned? If yes, execute command P11; if no, allow the operation and end.

[0149] P11: Operation prohibited, return to grounding device content f.

[0150] P12: End.

[0151] like Figure 7 As shown, in this embodiment, the steps for preventing the handcart from being powered on with the grounding wire connected are as follows:

[0152] P1: Begin.

[0153] P2: Obtain the name N of the substation and switch room where the handcart is located, and the names m1 and m2 of the jumper circuits.

[0154] P3: Return content f is set to blank.

[0155] P4: N, m1 and N, m2 respectively execute the "find grounding device sub-process".

[0156] P5: Is there any content returned? If yes, execute command P11; if no, execute command P6.

[0157] P6: Are there lines in the m1 and m2 circuits? If yes, execute command P7; if no, allow the operation and end.

[0158] P7: Is there a connection on the line? If yes, execute command P8; if no, allow the operation and end.

[0159] P8: Get the name n of the substation and switch room of the connected object, and the name M of the circuit on the opposite side of the line.

[0160] P9: Execute the "Find Grounding Device Subprocess".

[0161] P10: Is there any content returned? If yes, execute command P11; if no, allow the operation and end.

[0162] P11: Operation prohibited, return to grounding device content f.

[0163] P12: End.

[0164] like Figure 8 As shown in this embodiment, the steps for preventing the grounding wire from being connected to the drop-out fuse power-on procedure are as follows:

[0165] P1: Begin.

[0166] P2: Obtain the name N of the substation and switch room where the drop-out fuse is located, and the names m1 and m2 of the jumper circuits.

[0167] P3: Return content f is set to blank.

[0168] P4: N, m1 and N, m2 respectively execute the "find grounding device sub-process".

[0169] P5: Is there any content returned? If yes, execute command P11; if no, execute command P6.

[0170] P6: Are there lines in the m1 and m2 circuits? If yes, execute command P7; if no, allow the operation and end.

[0171] P7: Is there a connection on the line? If yes, execute command P8; if no, allow the operation and end.

[0172] P8: Get the name n of the substation and switch room of the connected object, and the name M of the circuit on the opposite side of the line.

[0173] P9: Execute the "Find Grounding Device Subprocess".

[0174] P10: Is there any content returned? If yes, execute command P11; if no, allow the operation and end.

[0175] P11: Operation prohibited, return to grounding device content f.

[0176] P12: End.

[0177] like Figure 9 As shown, in this embodiment, the load calculation subroutine steps are as follows:

[0178] P1: Start sub-procedure.

[0179] P2: Obtain the name N of the substation and switch room, and the names m1 and m2 of the accounting circuit.

[0180] P3: Return content f is set to blank.

[0181] P4: Number of switches m1 = 1? If yes, execute command P8; if no, execute command P5.

[0182] P5: m1 switch count > 1? If yes, execute command P6; if no, execute command P9.

[0183] P6: On the load side? If yes, execute command P8; if no, execute command P7.

[0184] P7: Are all switches M1 open? If yes, allow operation and end; if no, execute command P16.

[0185] P8: Is switch m1 off? If yes, allow operation and end; if no, execute command P17.

[0186] P9: m2 switch count = 1? If yes, execute command P13; if no, execute command P10.

[0187] P10: m2 switch count > 1? If yes, execute command P11; if no, execute command P14.

[0188] P11: On the load side? If yes, execute command P13; if no, execute command P12.

[0189] P12: Are all switches M1 open? If yes, allow operation and end; if no, execute command P16.

[0190] P13: Is the m2 switch off? If yes, allow operation and end; if no, execute command P17.

[0191] P14: No load on m1 side? If no, execute command P15; if yes, allow operation and end.

[0192] P15: No load on the m2 side? If no, execute command P16; if yes, allow operation and end.

[0193] P16: Is the specified switch off? If yes, allow the operation and end; if no, execute command P17.

[0194] P17: Operation prohibited, return to load device content f.

[0195] P18: End.

[0196] like Figure 10 As shown, in this embodiment, the steps of the procedure to prevent the load from opening and closing the disconnect switch are as follows:

[0197] P1: Begin.

[0198] P2: Obtain the name N of the substation and switch room where the disconnect switch is located, and the names m1 and m2 of the jumper circuits.

[0199] P3: Is there a disconnector on the opposite side of the busbar? If yes, execute command P4; if no, execute command P6.

[0200] P4: Is the opposite disconnector closed? If yes, execute command P5; if no, execute command P6.

[0201] P5: Is the bus connector in the closed position? If yes, allow the operation and end; if no, execute command P6.

[0202] P6: Execute the "load calculation sub-process".

[0203] P7: Is there any content returned? If yes, execute command P8; if no, allow the operation and end.

[0204] P8: Is this a load switch? If yes, execute command P9; if no, allow operation and end.

[0205] P9: Operation prohibited, return to load device content f.

[0206] P10: End.

[0207] like Figure 11 As shown, in this embodiment, the steps for preventing load switching on and off of the handcart are as follows:

[0208] P1: Begin.

[0209] P2: Obtain the name N of the substation and switch room where the handcart is located, and the names m1 and m2 of the jumper circuits.

[0210] P3: Is there a switch inside the handcart? If yes, execute command P4; if no, execute command P5.

[0211] P4: Is the handcart switch off? If yes, allow operation and end; if no, execute command P7.

[0212] P5: Execute the "load calculation sub-process".

[0213] P6: Is there any content returned? If yes, execute command P7; if no, allow the operation and end.

[0214] P7: Operation prohibited, return to load device content f.

[0215] P8: End.

[0216] like Figure 12 As shown in this embodiment, the steps of the procedure to prevent the fall protection from being activated or deactivated under load are as follows:

[0217] P1: Begin.

[0218] P2: Obtain the name N of the substation and switch room where the drop-out fuse is located, and the names m1 and m2 of the jumper circuits.

[0219] P3: Execute the "load calculation sub-process".

[0220] P4: Is there any content returned? If yes, execute command P5; if no, allow the operation and end.

[0221] P5: Operation prohibited, return to load device content f.

[0222] P6: End.

[0223] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A circuit-based electrical anti-misoperation logic operation method, characterized in that, It includes an inference engine and a knowledge base. The knowledge base adds a loop field and the same loop formed by the direct connection of lines between multiple substations and switch rooms to different stations and different names of loops, which serve as parameters for the logic operation of the inference engine. The inference engine uses the parameters in the knowledge base to conceive of data in order to find a solution. The technical concept of an inference engine includes the following steps: S1. Based on the electrical connection relationship between devices such as disconnectors, handcarts, drop-out fuses, grounding disconnectors, temporary grounding points, and cabinet doors, expressed through circuits, the interlocking logic is implemented to prevent sealing of grounding wires while energized, to prevent closing disconnectors with grounding wires connected to energized equipment, and to prevent accidental entry into energized compartments, according to the mutual exclusion logic relationship between disconnectors and other isolation devices and connected grounding devices. S2. Use different colors to differentiate the operation mode of the primary system diagram; S3. Calculate the number of switches on each circuit, classify them into single switches, multiple switches, and no switches on both sides, and perform logic operations when opening and closing the knife switch, switching the handcart, and disconnecting the drop-out fuse to prevent operation under load.

2. The circuit-based electrical anti-misoperation logic operation method according to claim 1, characterized in that, Step S1 includes the following steps: S1.1 Before closing the grounding switch, sealing the temporary grounding wire, and opening the cabinet door, take the circuit where the grounding switch, temporary grounding point, and cabinet door are located as objects and check whether the switch, handcart, and drop-out fuse connected to the circuit are all disconnected. If any of the latter devices are in the closed position, this operation is prohibited. S1.2 When performing the above S1.1 operation, after checking that there is no misoperation in this substation and switch room, it is also necessary to check whether there is a line in the circuit where the grounding switch, temporary grounding point, and network cabinet door are located, and whether the line is connected to other substations or switch rooms. If there is a connection, the S1.1 logic check operation is performed on the circuit connected to the other side of the line. S1.3 Before closing the grounding switch, sealing the temporary grounding wire, and opening the cabinet door, take the circuit where the grounding switch, temporary grounding point, and cabinet door are located as the object. If the circuit is equipped with a live display device, you need to check that there is no power at the live display device before you can carry out this operation. S1.4 Before closing the disconnect switch, handcart, and engaging the drop-out protection, check whether the grounding disconnect switches on both sides of the circuit are open, whether the temporary grounding wires have been removed, and whether the cabinet door is closed. If there are grounding devices or the cabinet door is not locked, this operation is prohibited. S1.5 When performing the above S1.4 operation, after checking that there is no misoperation in this substation or switch room, it is also necessary to check whether there are lines on both sides of the disconnect switch, handcart, and drop-out fuse, and whether the lines are connected to other substations or switch rooms. If there are connections, the S1.4 logic check operation is performed on the circuit connected to the other side of the line.

3. The circuit-based electrical anti-misoperation logic operation method according to claim 1, characterized in that, Step S2 includes the following steps: S2.1 In circuits where disconnectors, handcarts, and drop-out fuses are connected, and where switches, main transformers, grounding points, grounding disconnectors, busbars, live display devices, capacitors, transformers, lines, surge arresters, etc., are located, they shall be displayed in colors other than black and white. The coils of each voltage level of the main transformer shall be displayed in different colors, and the neutral point grounding part shall be displayed in blue. S2.2 After the temporary grounding point is sealed with the grounding wire and the grounding switch is closed, the circuit where the grounding equipment is located is taken as the object. The corresponding side components of the switch, handcart, and drop-out fuse of the equipment are connected across the main transformer. The switches, busbars, live display devices, capacitors, transformers, lines, surge arresters and other equipment on the circuit are all displayed in black or white. S2.3 When the handcart is pulled out to the maintenance position, the equipment inside the car will display in black or white.

4. The circuit-based electrical anti-misoperation logic operation method according to claim 1, characterized in that, Step S3 includes the following steps: S3.1 There is a switch inside the handcart. Operation is allowed when the switch is off, and operation is prohibited when the switch is off. S3.2 When there is only one switch on each side of the circuit of the knife switch and the drop-out fuse, operation is allowed when either switch is open, and operation is prohibited when both switches are closed. S3.3 When there is only one switch on one side of the circuit of the knife switch and drop-out fuse, the switch is open and operation is allowed; otherwise, operation is prohibited. S3.4 Operation is permitted when there are no switches on either side of the load switch circuit; S3.5 When there are no switches on either side of the circuits of the disconnector, handcart, and drop-out fuse, it is permissible to operate if the circuit on one side that is being bridging is not bridging any other disconnectors, handcarts, or drop-out fuses, and there are no main transformers, lines, capacitors, or multiple substations or distribution transformers present. Otherwise, operation is prohibited.

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