A unique test method and related device for the anti-jump circuit of a substation

Abstract

The present application discloses a method and related device for the uniqueness test of the anti-jump circuit in a substation, including: First, withdraw the three-phase inconsistency tripping circuit of the phase-separated circuit breaker; then close the circuit breaker, and at the same time bypass the electrical circuit of the operating box to test the anti-jump circuit of the circuit breaker; when the circuit breaker mechanism body does not have the anti-jump function, conduct the anti-jump function test on the overall control circuit, and analyze and judge according to whether the overall control circuit has or does not have the anti-jump function; when the circuit breaker mechanism body has the anti-jump function, control the closing handle mechanism to be in the closing position through the control panel, short-circuit the tripping circuit or apply a fault current to the protection device to make it trip, and at the same time measure the terminal voltage of the closing output terminal of the operating box in the control panel; finally, analyze whether the anti-jump function of the control circuit is unique according to the terminal voltage. It solves the problems that the prior art can only infer the uniqueness of the anti-jump circuit indirectly and the test operation is complex.

Description

Technical Field

[0001] This application relates to the technical field of substations, and particularly to a method for testing the uniqueness of the anti-jump circuit of a substation and related devices. Background Art

[0002] During the operation of the power system, the phenomenon that the circuit breaker repeatedly trips and closes within a short period is called circuit breaker jumping. When the above event occurs, it will damage the circuit breaker itself and even cause the circuit breaker failure protection in the bus differential protection to act, expanding the scope of the accident, and thus seriously threatening the safe and stable operation of the power grid. Therefore, anti-jump, as an effective measure to deal with circuit breaker jumping, has become an essential part of the normal operation of the circuit breaker. Currently, anti-jump is mainly achieved through the operation box in the protection device or the circuit breaker body mechanism, and the two cannot exist simultaneously to avoid generating parasitic circuits that affect the anti-jump function. According to the requirements of the latest anti-accident measures for power grid equipment: the control circuit of the circuit breaker must ensure that there is one and only one anti-jump circuit, and the anti-jump function of the circuit breaker mechanism is preferred, which clarifies the requirement for ensuring the uniqueness of the anti-jump function of the circuit breaker.

[0003] The main steps of the on-site anti-jump circuit uniqueness test method are as follows: When the circuit breaker is in the tripped position, short-circuit the protection trip and the positive power supply. Without releasing the closing handle on the control panel in the closed position, observe that the circuit breaker trips immediately after closing. After the circuit breaker is recharged, it will not close again, and then release the closing handle. If the anti-jump function is normal, after determining that the overall control circuit has the anti-jump function, then combine the drawings and the on-site wiring to verify and determine that the entire control circuit meets the requirements of the anti-accident measures, and infer the uniqueness of the anti-jump circuit indirectly. Further, for example: "A method for testing the anti-jump function of a circuit breaker" disclosed in a Chinese patent document, with the publication number CN113589156 A. This solution needs to consider and record the energy storage time of the circuit breaker, and it is necessary to remove the closing circuit from the operation box to the circuit breaker mechanism to verify the parasitic circuit between the protection operation box anti-jump and the circuit breaker mechanism anti-jump. It is necessary to consider the influence of the three-phase inconsistency time relay in the split-phase mechanism on the anti-jump test, and it is required to verify the time of the three-phase inconsistency time relay. Summary of the Invention

[0004] This application provides a method for testing the uniqueness of the anti-jump circuit of a substation and related devices, which is used to solve the problems that the existing technology can only infer the uniqueness of the anti-jump circuit indirectly through drawings, needs to consider and record the energy storage time of the circuit breaker, and needs to remove the closing circuit from the operation box to the circuit breaker mechanism.

[0005] In view of this, the first aspect of this application provides a method for testing the uniqueness of the anti-jump circuit of a substation, which is applied to the control circuit of the circuit breaker, where the control circuit includes a control panel. The method includes:

[0006] S1. When the circuit breaker is a phase-splitting circuit breaker mechanism, the three-phase inconsistency tripping circuit of the circuit breaker is controlled to exit, thereby avoiding the three-phase inconsistency tripping action of the circuit breaker;

[0007] S2. Close the circuit breaker and, without removing the closing circuit from the operating box to the circuit breaker mechanism, bypass the electrical circuit of the operating box and test the anti-tripping circuit of the circuit breaker mechanism body;

[0008] S3, when the circuit breaker mechanism body does not have an anti-jump function, and the overall control circuit has an anti-jump function, it is determined that the control circuit has only one set of anti-jump functions and the anti-jump function is implemented in the operation box; when the circuit breaker mechanism body does not have an anti-jump function, and the overall control circuit does not have an anti-jump function, the circuit breaker or the operation box is set with an anti-jump function, and the process returns to step S2;

[0009] S4. When the circuit breaker mechanism body has an anti-jump function, the closing handle mechanism is controlled to be in the closing position through the control panel, the trip circuit is short-circuited or a fault current is added to the protection device to cause it to trip, and at the same time, the terminal voltage of the closing output end of the operation box is measured in the control panel;

[0010] S5. Analyze whether the anti-jump function of the control loop is unique based on the terminal voltage.

[0011] Optionally, step S5 specifically includes:

[0012] When the terminal voltage is a negative voltage, the operation box does not have an anti-jump function, and it is determined that the overall control circuit has only one set of anti-jump functions and is implemented in the circuit breaker mechanism body, and the test ends;

[0013] When the terminal voltage is a positive voltage, the operating box has an anti-jump function, and after the circuit breaker mechanism or the operating box cancels the anti-jump function, the process returns to step S2.

[0014] Optionally, step S2 specifically includes:

[0015] The circuit breaker is closed, and the positive power supply of the control circuit is short-circuited with the closing circuit and the tripping circuit of the operating box, thereby bypassing the electrical circuit of the operating box and testing the anti-tripping circuit of the circuit breaker mechanism body.

[0016] Optionally, the short-circuiting of the positive power supply of the control circuit with the closing circuit and the tripping circuit of the operation box specifically includes:

[0017] The positive power supply of the control circuit and the output end circuit of the closing circuit of the operating box are kept short-circuited for a long time greater than 10 seconds, and then the positive power supply and the output end of the tripping circuit of the operating box are short-circuited instantaneously.

[0018] The second aspect of the present application provides a uniqueness test system for the anti-jump circuit of a substation, which is applied to the control circuit of a circuit breaker. The control circuit includes a control panel, and the system includes:

[0019] A first control unit, configured to, when the circuit breaker is a split-phase breaker mechanism, control the three-phase inconsistency tripping circuit of the circuit breaker to exit, so as to avoid the three-phase inconsistency tripping action of the circuit breaker;

[0020] A test unit, configured to close the circuit breaker and, without removing the closing circuit from the operating box to the breaker mechanism, bypass the electrical circuit of the operating box and test the anti-jump circuit of the breaker mechanism body;

[0021] A judgment unit, configured to, when the breaker mechanism body does not have an anti-jump function and the overall control circuit has an anti-jump function, determine that the control circuit has only one set of anti-jump functions and the anti-jump function is realized in the operating box; when the breaker mechanism body does not have an anti-jump function and the overall control circuit does not have an anti-jump function, trigger the test unit after setting the anti-jump function in the circuit breaker or the operating box;

[0022] A second control unit, configured to, when the breaker mechanism body has an anti-jump function, control the closing handle mechanism to be in the closing position through the control panel, short-circuit the tripping circuit or apply a fault current to the protection device to make it trip, and at the same time measure the terminal voltage of the closing output terminal of the operating box in the control panel;

[0023] An analysis unit, configured to analyze whether the anti-jump function of the control circuit is unique according to the terminal voltage.

[0024] Optionally, the analysis unit is specifically configured to:

[0025] When the terminal voltage is a negative voltage, the operating box does not have an anti-jump function, and it is determined that the overall control circuit has only one set of anti-jump functions and is realized in the breaker mechanism body, and the test ends;

[0026] When the terminal voltage is a positive voltage, the operating box has an anti-jump function, and after canceling the anti-jump function in the breaker mechanism or the operating box, the test unit is triggered.

[0027] Optionally, the test unit is specifically configured to:

[0028] Close the circuit breaker, and short-circuit the positive power supply of the control circuit with the closing circuit and the tripping circuit of the operating box, so as to bypass the electrical circuit of the operating box and test the anti-jump circuit of the breaker mechanism body.

[0029] Optionally, the short - circuit processing of the positive power supply of the control loop with the closing loop and the tripping loop of the operation box specifically includes:

[0030] Keep the output terminal loop of the positive power supply of the control loop and the closing loop of the operation box short - circuited for a long time greater than 10 seconds, and then instantaneously short - circuit the positive power supply and the output terminal of the tripping loop of the operation box.

[0031] The third aspect of this application provides a substation anti - bounce loop uniqueness test device, and the device includes a processor and a memory:

[0032] The memory is used to store program codes and transmit the program codes to the processor;

[0033] The processor is used to execute the steps of the substation anti - bounce loop uniqueness test method described in the first aspect above according to the instructions in the program codes.

[0034] The fourth aspect of this application provides a computer - readable storage medium, and the computer - readable storage medium is used to store program codes, and the program codes are used to execute the substation anti - bounce loop uniqueness test method described in the first aspect above.

[0035] From the above technical solutions, it can be seen that this application has the following advantages:

[0036] This application provides a substation anti - bounce loop uniqueness test method, including: S1. When the circuit breaker is a phase - separated circuit breaker mechanism, control the three - phase inconsistency tripping loop of the circuit breaker to exit, so as to avoid the three - phase inconsistency tripping action of the circuit breaker; S2. Close the circuit breaker, and without removing the closing loop from the operation box to the circuit breaker mechanism, bypass the electrical loop of the operation box and test the anti - bounce loop of the circuit breaker mechanism body; S3. When the circuit breaker mechanism body does not have the anti - bounce function and the overall control loop has the anti - bounce function, it is determined that there is only one set of anti - bounce functions in the control loop and the anti - bounce function is realized in the operation box. When the circuit breaker mechanism body does not have the anti - bounce function and the overall control loop does not have the anti - bounce function, then set the anti - bounce function in the circuit breaker or the operation box and return to step S2; S4. When the circuit breaker mechanism body has the anti - bounce function, control the closing handle mechanism to be in the closing position through the control panel, short - circuit the tripping loop or apply a fault current in the protection device to make it trip, and at the same time measure the terminal voltage of the closing output terminal of the operation box in the control panel; S5. Analyze whether the anti - bounce function of the control loop is unique according to the terminal voltage.

[0037] Compared with the prior art:

[0038] The method for testing the uniqueness of the anti-jump circuit in a substation of the present application not only overcomes the problem that after testing whether the overall control circuit's anti-jump function is normal using traditional testing methods, the uniqueness of the anti-jump circuit can only be inferred from the drawings; moreover, for any circuit breaker mechanism, it is not necessary to consider and record the circuit breaker's energy storage time, and it is not necessary to remove the closing circuit from the operation box to the circuit breaker mechanism to verify the parasitic circuits of the anti-jump in the protection operation box and the circuit breaker mechanism. It is not necessary to consider the influence of the three-phase inconsistency time relay in the split-phase mechanism on the anti-jump test, and it can effectively test whether there is exactly one set of anti-jump circuits in the circuit breaker control circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic flow chart of a method for testing the uniqueness of the anti-jump circuit in a substation provided in an embodiment of the present application;

[0040] Figure 2 It is a schematic diagram of the control circuit of the operation box provided in an embodiment of the present application;

[0041] Figure 3 It is a schematic diagram of the control circuit of the mechanism provided in an embodiment of the present application;

[0042] Figure 4 It is a schematic structural diagram of a system for testing the uniqueness of the anti-jump circuit in a substation provided in an embodiment of the present application.

[0043] Reference Numeral Description:

[0044] Figure 2 Among them: HQ, closing coil; TQ, tripping coil; HYJ, closing locking relay; TYJ, tripping locking relay; 1QK, local / remote conversion circuit breaker; 1KK, local closing and tripping circuit breaker; HBJ, closing holding relay; TBJ, tripping holding relay; HJ, reclosing relay; TJ, protection tripping node; KKJ, post-closing relay; TWJ, trip position relay; HWJ, closing position relay; TBJV, anti-jump relay.

[0045] Figure 3 Among them: HQ, closing coil; TQ1, tripping coil; K9, SF6 pressure locking relay; BW, spring energy storage contact; K3, anti-jump relay; QF, circuit breaker auxiliary contact; S1, local closing and tripping control switch; S4, local / remote conversion switch. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0046] To enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0047] Please refer to Figure 1 , a method for testing the uniqueness of the anti-jump circuit in a substation, which is applied to the control circuit of a circuit breaker. The control circuit includes a control panel and comprises:

[0048] Step 101: When the circuit breaker is a phase-separated breaker mechanism, the three-phase inconsistent tripping circuit of the circuit breaker is controlled to exit, so as to avoid the three-phase inconsistent tripping action of the circuit breaker.

[0049] It should be noted that for a phase-separated breaker mechanism, the tripping circuit of the three-phase inconsistent relay is default to exit to avoid misjudgment caused by the action of the three-phase inconsistent relay.

[0050] Step 102: Close the circuit breaker. Without removing the closing circuit from the operating box to the breaker mechanism, bypass the electrical circuit of the operating box and test the anti-jump circuit of the breaker mechanism body.

[0051] It should be noted that the principle of the control circuit of the circuit breaker operating box is as Figure 2 , close the circuit breaker, keep the positive power supply 101 short-circuited with the output terminal 107 of the closing circuit of the operating box for a long time greater than 10 seconds, and then instantaneously short-circuit the positive power supply 101 with the output terminal 137 of the protection tripping circuit of the operating box. This process is actually to bypass the electrical circuit of the operating box first and directly test the internal anti-jump circuit of the switch mechanism in Figure 3 . Since the test bypasses the electrical circuit of the operating box, the anti-jump relay in the operating box will not start at all, so there is no need to consider the anti-jump parasitic circuit between the operating box and the breaker mechanism.

[0052] The principle is as follows: Assume that the anti-pumping relay K3 is not cancelled. Since the closing circuit of 107 is always energized, when the circuit breaker is in the closed state, the normally open contact QF of the auxiliary contact of the circuit breaker will be closed and conduct. The anti-pumping relay K3 of the circuit breaker mechanism is energized and magnetized, and maintains magnetization through its own normally open contact K3. At the same time, another normally closed contact of K3 disconnects the closing circuit of the circuit breaker. When the tripping circuit of 137 is positively charged, since the circuit breaker is in the closed position, the normally closed contact QF of the auxiliary contact of the circuit breaker is in the conducting state, and the tripping coil TQ1 is energized, and the circuit breaker will trip. Since the normally closed contact of the anti-pumping relay K3 disconnects the closing circuit, the circuit breaker will remain in the tripped position after tripping and will not close again. If it is assumed that the anti-pumping relay K3 has been cancelled, the circuit breaker will close again after tripping, and the tripping and closing will be repeated continuously, that is, pumping. According to the above two assumptions, two situations will occur when observing the circuit breaker on site as follows: The first situation: The anti-pumping loop K3 relay of the circuit breaker mechanism has been cancelled, and the circuit breaker closes again after tripping, and the tripping and closing are repeated continuously, that is, pumping. The second situation: It remains in the tripped position after tripping and does not close again, then there is an anti-pumping loop in the circuit breaker mechanism.

[0053] Step 103: When the circuit breaker mechanism body does not have the anti-pumping function and the overall control loop has the anti-pumping function, it is determined that the control loop has only one set of anti-pumping functions and the anti-pumping function is realized in the operation box. When the circuit breaker mechanism body does not have the anti-pumping function and the overall control loop does not have the anti-pumping function, then set the anti-pumping function in the circuit breaker or the operation box and return to Step 102;

[0054] Step 104: When the circuit breaker mechanism body has the anti-pumping function, control the closing handle mechanism to be in the closed position through the control panel, short-circuit the tripping circuit or apply a fault current to the protection device to make it trip, and at the same time measure the terminal voltage of the closing output terminal of the operation box in the control panel;

[0055] It should be noted that when there is an anti-pumping loop in the circuit breaker mechanism body, it is necessary to further judge the anti-pumping function situation of the operation box. Figure 2 For the control schematic diagram of the operation box, the verification process principle is as follows. Assume that the anti-pumping relay TBJV of the operation box is not cancelled. Close the circuit breaker and keep the closing handle QK switched to the closed position on the control panel. The 5 and 6 contacts of the QK handle are connected, and the positive power passes through the closing pressure locking contact HYJ1, the normally closed contact of the TBJV anti-pumping relay, and the HBJ closing holding relay, so that the closing output circuit 107 of the operation box is positively charged. When the TJ tripping contact conducts, the positive power passes through the normally closed contact TYJ1 of the tripping locking relay TYJ and the tripping holding relay TBJ in sequence. Figure 3The remote contacts 7 and 8 of the breaker mechanism control loop S4, the normally closed contact of the SF6 pressure interlock relay K9, the normally open contact of the breaker auxiliary contact QF, and the tripping coil TQ1 of the breaker form a loop, and the breaker will trip. The normally open contact of the trip holding relay TBJ closes. Since the closing positive power is always conducting, the anti-pumping relay TBJV in the operating box is started by the closing of the normally open contact of the trip holding relay TBJ and self-latches through its own normally open contact TBJV. Then, the normally closed contact of the TBJV anti-pumping relay operates to disconnect the closing loop of the operating box, causing the positive power of 107 to be disconnected. After the mechanism trips, the closing loop is conducting, that is, the negative power passes through the closing coil HQ, contacts QF, BW, K9, and K3 to the 107 closing loop terminal, causing the 107 terminal to change from being positively charged to negatively charged. If the TBJV anti-pumping relay in the operating box has been cancelled and not started, the normally closed contact of the operating box anti-pumping relay TBJV remains closed, and 107 will be continuously positively charged through the closing handle 5 and 6 contacts.

[0056] It should be noted that when the anti-pumping relay TBJV in the operating box is not cancelled and in the closing state, when the 107 terminal in the closing output loop of the operating box is positively charged, the mechanism anti-pumping relay K3 will also be started by being conducted through the normally open auxiliary contact QF of the breaker. However, when the anti-pumping relay TBJV in the operating box operates to disconnect the positive power of the closing output 107, the K3 relay loses the positive power supply and returns. Therefore, the parasitic loop in this measurement process will not ultimately affect the correctness of judging the anti-pumping loop function by measuring the 107 voltage.

[0057] Step 105: Analyze whether the anti-pumping function of the control loop is unique based on the terminal voltage.

[0058] It should be noted that when measuring the voltage of the 107 terminal at the closing output of the operating box, if it is a positive voltage, the anti-pumping function in the operating box has been cancelled, and the anti-pumping of the overall breaker control loop is unique, which is the mechanism anti-pumping; when measuring the voltage of the 107 terminal at the closing output of the operating box, if it is a negative voltage, there is also an anti-pumping function in the operating box. After canceling the anti-pumping function in the breaker mechanism or the operating box, start the test again from step 102.

[0059] The substation anti-pumping loop uniqueness test method provided by the embodiments of the present application not only overcomes the problem that after testing whether the anti-pumping function of the overall control loop is normal by the traditional test method, the uniqueness of the anti-pumping loop can only be inferred from the drawings; moreover, for any breaker mechanism, it is not necessary to consider and record the breaker energy storage time, and it is not necessary to remove the closing loop from the operating box to the breaker mechanism to verify the parasitic loop of the protection operating box anti-pumping and the breaker mechanism anti-pumping. It is not necessary to consider the influence of the three-phase inconsistency time relay in the split-phase mechanism on the anti-pumping test, and effectively test whether there is exactly one set of anti-pumping loops in the breaker control loop.

[0060] The above is a method for testing the uniqueness of the anti-jump circuit in a substation provided in the embodiments of the present application. The following is a system for testing the uniqueness of the anti-jump circuit in a substation provided in the embodiments of the present application.

[0061] Please refer to Figure 4 , a system for testing the uniqueness of the anti-jump circuit in a substation provided in the embodiments of the present application, is applied to the control circuit of a circuit breaker. The control circuit includes a control panel and comprises:

[0062] A first control unit 201, configured to, when the circuit breaker is a split-phase circuit breaker mechanism, control the three-phase inconsistency tripping circuit of the circuit breaker to withdraw, so as to avoid the three-phase inconsistency tripping action of the circuit breaker;

[0063] A test unit 202, configured to close the circuit breaker and, without removing the closing circuit from the operating box to the circuit breaker mechanism, bypass the electrical circuit of the operating box and test the anti-jump circuit of the circuit breaker mechanism body;

[0064] A judgment unit 203, configured to, when the circuit breaker mechanism body does not have an anti-jump function and the overall control circuit has an anti-jump function, determine that there is only one set of anti-jump functions in the control circuit and the anti-jump function is realized in the operating box; when the circuit breaker mechanism body does not have an anti-jump function and the overall control circuit does not have an anti-jump function, trigger the test unit after setting an anti-jump function in the circuit breaker or the operating box;

[0065] A second control unit 204, configured to, when the circuit breaker mechanism body has an anti-jump function, control the closing handle mechanism to be in the closing position through the control panel, short-circuit the tripping circuit or apply a fault current to the protection device to make it trip, and at the same time measure the terminal voltage of the closing output terminal of the operating box in the control panel;

[0066] An analysis unit 205, configured to analyze whether the anti-jump function of the control circuit is unique according to the terminal voltage.

[0067] Furthermore, in the embodiments of the present application, a device for testing the uniqueness of the anti-jump circuit in a substation is further provided. The device includes a processor and a memory:

[0068] The memory is configured to store program code and transmit the program code to the processor;

[0069] The processor is configured to execute the steps of the method for testing the uniqueness of the anti-jump circuit in a substation as described in the method embodiment above according to the instructions in the program code.

[0070] Furthermore, in the embodiments of the present application, a computer-readable storage medium is further provided. The computer-readable storage medium is configured to store program code, and the program code is used to execute the method described in the method embodiment above.

[0071] Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the systems and units described above can refer to the corresponding processes in the foregoing method embodiments, and will not be described herein again.

[0072] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0073] It should be understood that in the present application, "at least one (item)" means one or more, and "a plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships can exist. For example, "A and / or B" can mean: only A exists, only B exists, and both A and B exist at the same time. Among them, A and B can be singular or plural. The character " / " generally means that the associated objects before and after are in an "or" relationship. "At least one (one) of the following" or a similar expression means any combination of these items, including any combination of single items (ones) or plural items (ones). For example, at least one (one) of a, b, or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0074] In several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection to each other can be through some interfaces, and the indirect coupling or communication connection of devices or units can be in electrical, mechanical or other forms.

[0075] The unit described as a separation component may or may not be physically separated. The component displayed as a unit may or may not be a physical unit, that is, it may be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0076] In addition, each functional unit in various embodiments of the present application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0077] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: USB flash drives, mobile hard disks, read-only memories (English full name: Read-Only Memory, English abbreviation: ROM), random access memories (English full name: Random Access Memory, English abbreviation: RAM), magnetic disks or optical discs and other various media that can store program codes.

[0078] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of various embodiments of the present application.

Claims

1. A method for testing the uniqueness of the anti-jump circuit in a substation, characterized in that, Applied to the control circuit of a circuit breaker, where the control circuit includes a control panel, the method comprises: S1. When the circuit breaker is a split-phase circuit breaker mechanism, control the three-phase inconsistent tripping circuit of the circuit breaker to exit, thereby avoiding the three-phase inconsistent tripping operation of the circuit breaker; S2. Close the circuit breaker. Without removing the closing circuit from the operating box to the circuit breaker mechanism, bypass the electrical circuit of the operating box and test the anti-pumping circuit of the circuit breaker mechanism body; Among them, step S2 specifically includes: Close the circuit breaker. By short-circuiting the positive power supply of the control circuit with the closing circuit and the tripping circuit of the operating box, bypass the electrical circuit of the operating box and test the anti-pumping circuit of the circuit breaker mechanism body; S3. When the circuit breaker mechanism body does not have an anti-pumping function and the overall control circuit has an anti-pumping function, it is determined that the control circuit has only one set of anti-pumping functions and the anti-pumping function is realized in the operating box. When the circuit breaker mechanism body does not have an anti-pumping function and the overall control circuit does not have an anti-pumping function, then set the anti-pumping function in the circuit breaker or the operating box and return to step S2; S4. When the circuit breaker mechanism body has an anti-pumping function, control the closing handle mechanism to be in the closing position through the control panel, short-circuit the tripping circuit or apply a fault current to the protection device to make it trip, and at the same time measure the terminal voltage at the closing output terminal of the operating box in the control panel; S5. Analyze whether the anti-pumping function of the control circuit is unique according to the terminal voltage; Among them, step S5 specifically includes: When the terminal voltage is a positive voltage, the operating box does not have an anti-pumping function, and it is determined that the overall control circuit has only one set of anti-pumping functions and is realized in the circuit breaker mechanism body, and the test ends; When the terminal voltage is a negative voltage, the operating box has an anti-pumping function. After canceling the anti-pumping function in the circuit breaker mechanism or the operating box, return to step S2.

2. The unique test method for the anti-jump circuit of a substation according to claim 1, characterized in that, The short-circuiting process of the positive power supply of the control circuit with the closing circuit and the tripping circuit of the operating box specifically includes: Keep the output terminal circuit of the positive power supply of the control circuit and the closing circuit of the operating box short-circuited for a long time greater than 10 seconds, and then instantaneously short-circuit the positive power supply with the output terminal of the tripping circuit of the operating box.

3. A unique test system for the anti-jump circuit of a substation, characterized in that, Applied to the control circuit of a circuit breaker, where the control circuit includes a control panel, the system comprises: A first control unit, used to control the three-phase inconsistent tripping circuit of the circuit breaker to exit when the circuit breaker is a split-phase circuit breaker mechanism, thereby avoiding the three-phase inconsistent tripping operation of the circuit breaker; A test unit, used to close the circuit breaker. Without removing the closing circuit from the operating box to the circuit breaker mechanism, bypass the electrical circuit of the operating box and test the anti-pumping circuit of the circuit breaker mechanism body; Among them, the test unit is specifically used for: Close the circuit breaker. By short-circuiting the positive power supply of the control circuit with the closing circuit and the tripping circuit of the operating box, bypass the electrical circuit of the operating box and test the anti-pumping circuit of the circuit breaker mechanism body; A judgment unit, configured to determine that there is only one anti-jump function in the control loop and the anti-jump function is implemented in the operation box when the circuit breaker mechanism body does not have an anti-jump function and the overall control loop has an anti-jump function. When the circuit breaker mechanism body does not have an anti-jump function and the overall control loop does not have an anti-jump function, the test unit is triggered after the anti-jump function is set in the circuit breaker or the operation box. A second control unit, configured to, when the circuit breaker mechanism body has an anti-jump function, control the closing handle mechanism to be in the closing position through the control panel, short-circuit the tripping loop or apply a fault current to the protection device to make it trip, and measure the terminal voltage of the closing output terminal of the operation box in the control panel at the same time. An analysis unit, configured to analyze whether the anti-jump function of the control loop is unique according to the terminal voltage. Among them, the analysis unit is specifically configured to: When the terminal voltage is a positive voltage, there is no anti-jump function in the operation box, and it is determined that there is only one anti-jump function in the overall control loop and it is implemented in the circuit breaker mechanism body, and the test ends. When the terminal voltage is a negative voltage, there is an anti-jump function in the operation box, and after the anti-jump function is cancelled in the circuit breaker mechanism or the operation box, the test unit is triggered.

4. The uniqueness test system for the anti-jumping circuit of a substation according to claim 3, wherein The short-circuit processing of the positive power supply of the control loop with the closing loop and the tripping loop of the operation box specifically includes: Keeping the output terminal loop of the positive power supply of the control loop and the closing loop of the operation box short-circuited for a long time greater than 10 seconds, and then instantaneously short-circuiting the positive power supply and the output terminal of the tripping loop of the operation box.

5. A uniqueness test device for the anti-jump circuit of a substation, characterized in that The device includes a processor and a memory: The memory is used to store program codes and transmit the program codes to the processor; The processor is used to execute the substation anti-jump loop uniqueness test method according to any one of claims 1-2 according to the instructions in the program codes.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store program codes, and the program codes are used to execute the substation anti-jump loop uniqueness test method according to any one of claims 1-2.

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