A neutral point grounding detection method and device of a transformer and electronic equipment

Abstract

This invention discloses a method, apparatus, and electronic device for detecting the neutral point grounding of a transformer. The transformer neutral point grounding detection method provided by this invention includes: acquiring busbar connection information of a substation; determining the number of transformers whose neutral point can be grounded based on the busbar connection information; acquiring the neutral point grounding priority information of the transformers; and confirming the grounding status of the transformers based on the neutral point grounding priority information. The technical solution provided by this invention confirms the correctness of the transformer's neutral point grounding status by using the transformer's neutral point grounding priority information, thereby preventing misjudgments of the transformer's neutral point grounding status and improving the safety and stability of the power grid operation.

Description

Technical Field

[0001] This invention relates to the field of power grid fault detection technology, and in particular to a method, apparatus and electronic equipment for detecting neutral point grounding of a transformer. Background Technology

[0002] As power grids expand, the number of maintenance and operation equipment in regional power grids is increasing. Power system transformers are key equipment in the power grid, and the correctness of their neutral grounding method significantly impacts the zero-sequence network of the grid. Misjudging the grounding method of power system transformers can lead to malfunctions or failures to operate protection systems during grid faults, jeopardizing the safe and stable operation of the power grid. Therefore, an accurate method for determining the grounding status of transformers is needed. Summary of the Invention

[0003] This invention provides a method, apparatus, and electronic device for detecting the neutral point grounding of a transformer, in order to solve the problem that misjudging the grounding mode of a transformer can lead to a reduction in power grid safety.

[0004] According to one aspect of the present invention, a method for detecting neutral point grounding of a transformer is provided, comprising:

[0005] Obtain busbar connection information for the substation;

[0006] Based on the busbar wiring information of the substation, determine the number of transformers whose neutral point can be grounded;

[0007] Obtain the neutral point grounding priority information of the transformer;

[0008] The neutral point grounding status of the transformer is confirmed based on the neutral point grounding priority information of the transformer.

[0009] Optionally, obtaining the busbar connection information of the substation includes:

[0010] Obtain the number and operating mode of the busbars of the substation;

[0011] The busbars of the substation can be operated in parallel or in separate configurations.

[0012] Optionally, determining the number of transformers with a neutral point that can be grounded based on the busbar wiring information of the substation includes:

[0013] Based on the number of busbars and the operating mode of the substation, determine the neutral point grounding information of the substation;

[0014] Based on the neutral point grounding information of the substation, determine the number of transformers whose neutral point can be grounded.

[0015] Optionally, obtaining the neutral point grounding priority information of the transformer includes:

[0016] Obtain the number of transformers in the substation;

[0017] Based on the number of transformers in the substation, the preset neutral point grounding priority information of the transformers is confirmed.

[0018] Optionally, confirming the neutral point grounding status of the transformer based on the neutral point grounding priority information of the transformer includes:

[0019] Based on the neutral point grounding status of the transformer and the neutral point grounding priority information of the transformer, determine whether the neutral point grounding status of the transformer meets the preset priority.

[0020] The preset priority is determined by the neutral point grounding priority information of the transformer.

[0021] Optionally, before confirming the neutral point grounding status of the transformer based on the neutral point grounding priority information of the transformer, the method further includes:

[0022] Obtain the neutral point grounding status of the transformer.

[0023] Optionally, after determining whether the neutral point grounding state of the transformer meets a preset priority based on the neutral point grounding state and the neutral point grounding priority information of the transformer, the method further includes:

[0024] If the neutral point grounding state of the transformer meets the preset priority, then the neutral point grounding state of the transformer shall be maintained.

[0025] If the neutral point grounding state of the transformer does not meet the preset priority, then the neutral point grounding state of the transformer is adjusted.

[0026] Optionally, adjusting the neutral point grounding state of the transformer if the neutral point grounding state does not meet the preset priority includes:

[0027] If the neutral point grounding status of the transformer does not meet the preset priority, a warning message will be issued;

[0028] Adjust the neutral point grounding status of the transformer according to the control command information from the dispatch console of the substation;

[0029] The control command information is determined by the neutral point grounding priority information of the transformer.

[0030] Secondly, embodiments of the present invention provide a transformer neutral point grounding detection device, comprising:

[0031] The acquisition module is used to acquire busbar connection information of the substation;

[0032] The judgment module is used to determine the number of transformers whose neutral point can be grounded based on the busbar connection information of the substation.

[0033] The confirmation module is used to confirm the neutral point grounding status of the transformer based on the neutral point grounding priority information of the transformer.

[0034] The acquisition module is also used to acquire the neutral point grounding priority information of the transformer.

[0035] Thirdly, embodiments of the present invention provide an electronic device, comprising:

[0036] processor;

[0037] The processor includes a memory that is communicatively connected to the processor, wherein the memory stores a computer program that can be executed by the processor to enable the processor to perform the transformer neutral point grounding detection method described above.

[0038] The neutral point grounding detection method of this invention determines the number of transformers whose neutral points can be grounded by acquiring the busbar connection information of the substation. It also acquires the neutral point grounding priority information of the transformers and confirms the neutral point grounding status of the transformers based on this priority information. This prevents the expansion of power grid faults caused by misjudging the neutral point grounding status of transformers, thereby improving the safety and stability of power grid operation.

[0039] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a flowchart of a transformer neutral point grounding detection method provided in an embodiment of the present invention;

[0042] Figure 2 This is a flowchart of another transformer neutral point grounding detection method provided in an embodiment of the present invention;

[0043] Figure 3 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention;

[0044] Figure 4 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention;

[0045] Figure 5 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention;

[0046] Figure 6 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention;

[0047] Figure 7 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention;

[0048] Figure 8 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention;

[0049] Figure 9 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention;

[0050] Figure 10 This is a topology diagram of a transformer in a power grid provided by an embodiment of the present invention;

[0051] Figure 11 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention;

[0052] Figure 12 This is another topology diagram of a transformer in a power grid provided by an embodiment of the present invention;

[0053] Figure 13 This is a schematic diagram of the structure of a transformer neutral point grounding detection device provided in an embodiment of the present invention;

[0054] Figure 14 This is a schematic diagram of an electronic device provided in an embodiment of the present invention. Detailed Implementation

[0055] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0056] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0057] Figure 1 This is a flowchart of a transformer neutral point grounding detection method provided by an embodiment of the present invention. See also... Figure 1 The neutral point grounding detection method for transformers provided in this embodiment of the invention includes:

[0058] S101. Obtain busbar connection information of the substation.

[0059] Specifically, the number of transformers that can be grounded at the neutral point of a substation will change depending on the busbar wiring status. By obtaining the busbar wiring information of a substation, the number of transformers that can be grounded at the neutral point of the substation can be determined.

[0060] S102. Based on the busbar wiring information of the substation, determine the number of transformers whose neutral point can be grounded.

[0061] Specifically, by obtaining the busbar connection information of the substation, the number of transformers whose neutral point can be grounded can be determined. If the number of transformers currently grounded to the neutral point differs from the number of transformers whose neutral point can be grounded, it indicates that the neutral point grounding status of some transformers is incorrect. This setting can determine whether the grounding status of the transformers in the substation matches the busbar connection status, prevent grounding errors, and thus improve the safety of power grid operation.

[0062] S103. Obtain the neutral point grounding priority information of the transformer.

[0063] Specifically, transformers within a substation can be configured with grounding priorities. The neutral point grounding priority information of the transformer is used to determine whether the transformer needs to be grounded and the grounding sequence.

[0064] For example, when the priority information is 0, it means that the neutral point of the transformer is not grounded. When the priority information is 1, it means that the neutral point of the transformer is grounded, and the priority is the highest. When the priority information is 2, it means that the neutral point of the transformer is grounded, and the priority is lower than that of the transformer with priority information of 1, and so on. This setting can improve the accuracy of determining the neutral point grounding status of the transformer, thereby improving the safety of power grid operation.

[0065] S104. Confirm the neutral point grounding status of the transformer based on the neutral point grounding priority information of the transformer.

[0066] Specifically, by using the neutral point grounding priority information of the transformer, it can be determined whether the transformer's neutral point should be grounded during operation. By comparing this information with the actual grounding status of the transformer, it can be determined whether the transformer's neutral point is in the correct grounding state, thereby preventing misjudgment of the transformer's neutral point grounding status and improving the safety and stability of the power grid operation.

[0067] For example, when detecting the neutral point grounding status of a transformer, the busbar connection information of the substation is first obtained to determine the number of transformers whose neutral point can currently be grounded. Based on the number of transformers currently grounded and the number of transformers whose neutral point can be grounded, it can be determined whether any transformers have incorrect neutral point grounding status. Then, grounding priorities are set for the transformers within the substation, and the grounding priority of each transformer is compared with the actual grounding status of the transformer to determine whether the neutral point of each transformer is in the correct grounding state, thus solving the problem that misjudging the grounding mode of a transformer can lead to a reduction in power grid security.

[0068] The transformer neutral point grounding detection method provided in this embodiment determines the number of transformers whose neutral points can be grounded by acquiring the busbar connection information of the substation. It also acquires the neutral point grounding priority information of the transformers and confirms the neutral point grounding status based on this information. By determining the neutral point grounding status of the transformers using both the substation busbar connection information and the transformer neutral point grounding priority information, this method prevents the expansion of power grid faults caused by misjudging the neutral point grounding status of transformers, thereby improving the safety and stability of power grid operation.

[0069] Optional, Figure 2 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention. Based on the above embodiment, see... Figure 2 The neutral point grounding detection method for transformers includes:

[0070] S201. Obtain the number and operating mode of the busbars of the substation.

[0071] The operation modes of the busbars in substations include parallel operation and separate operation.

[0072] Specifically, the number and operation mode of busbars may differ from substation to substation, and consequently, the number of transformers capable of grounding the neutral point will also vary. Based on the number of busbars and their operation mode, the number of transformers capable of grounding the neutral point of the substation can be determined. When a substation has multiple busbars, the busbar operation modes include parallel operation and separate operation.

[0073] S102. Based on the busbar wiring information of the substation, determine the number of transformers whose neutral point can be grounded.

[0074] S103. Obtain the neutral point grounding priority information of the transformer.

[0075] S104. Confirm the neutral point grounding status of the transformer based on the neutral point grounding priority information of the transformer.

[0076] Optional, Figure 3 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention. Based on the above embodiments, see... Figure 3 The neutral point grounding detection method for transformers includes:

[0077] S201. Obtain the number and operating mode of the busbars of the substation.

[0078] S301. Determine the neutral point grounding information of the substation based on the number of busbars and the operating mode of the substation.

[0079] Specifically, based on the number and operating mode of the substation's busbars, the substation's neutral point grounding information can be determined, i.e., the number of transformers allowed to operate with neutral point grounding on the busbars. For example, in a 110kV power grid, a single busbar connection allows only one transformer to operate with neutral point grounding. With a double busbar connection, if the busbars operate in parallel, one transformer is allowed to operate with neutral point grounding; if the busbars operate separately, one transformer is allowed to operate with neutral point grounding on each busbar segment. With a three- or more-than-one-busbar connection, if any two or more busbar segments operate in parallel, only one transformer is allowed to operate with neutral point grounding on all parallel-operating busbars; if the busbars operate separately, one transformer is allowed to operate with neutral point grounding on each busbar segment.

[0080] S302. Based on the neutral point grounding information of the substation, determine the number of transformers whose neutral point can be grounded.

[0081] Specifically, by using the neutral point grounding information of a substation, the number of transformers that the busbar can be allowed to operate with neutral point grounding can be determined, that is, the number of transformers whose neutral point can be grounded in the substation.

[0082] S103. Obtain the neutral point grounding priority information of the transformer.

[0083] S104. Confirm the neutral point grounding status of the transformer based on the neutral point grounding priority information of the transformer.

[0084] Optional, Figure 4 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention. Based on the above embodiments, see... Figure 4 The neutral point grounding detection method for transformers includes:

[0085] S101. Obtain busbar connection information of the substation.

[0086] S102. Based on the busbar wiring information of the substation, determine the number of transformers whose neutral point can be grounded.

[0087] S401. Obtain the number of transformers in the substation.

[0088] Specifically, the number of transformers in each substation may vary, and consequently, the priority of transformers within the substation may also differ, which needs to be determined based on the number of transformers.

[0089] S402. Based on the number of transformers in the substation, confirm the preset neutral point grounding priority information of the transformers.

[0090] Specifically, based on the number of transformers in the substation, the neutral point grounding priority information of the transformers can be determined according to the preset neutral point grounding sequence. This setting can clearly confirm the neutral point grounding sequence of the transformers, prevent errors, and thus improve the accuracy of judging the neutral point grounding status of the transformers.

[0091] S104. Confirm the neutral point grounding status of the transformer based on the neutral point grounding priority information of the transformer.

[0092] Optional, Figure 5 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention. Based on the above embodiments, see... Figure 5 The neutral point grounding detection method for transformers includes:

[0093] S101. Obtain busbar connection information of the substation.

[0094] S102. Based on the busbar wiring information of the substation, determine the number of transformers whose neutral point can be grounded.

[0095] S103. Obtain the neutral point grounding priority information of the transformer.

[0096] S501. Based on the neutral point grounding status of the transformer and the neutral point grounding priority information of the transformer, determine whether the neutral point grounding status of the transformer meets the preset priority.

[0097] The preset priority is determined by the neutral point grounding priority information of the transformer.

[0098] Specifically, the neutral point grounding priority information of a transformer can determine the neutral point grounding priority of transformers within a substation, i.e., the grounding sequence of the transformers. The neutral point grounding status of a transformer indicates whether the transformer's neutral point is currently grounded. By confirming the transformer's neutral point grounding status and neutral point grounding priority information, it can be determined whether the transformer's neutral point is correctly grounded.

[0099] For example, when the transformer grounding priority is 0, if the transformer is grounded, the grounding status is incorrect; if the transformer is not grounded, the grounding status is correct. When the transformer grounding priority is 1, if the transformer is grounded, the grounding status is correct; if the transformer is not grounded, the grounding status is incorrect. Determining the correctness of the transformer's grounding status based on grounding priority improves the accuracy of the judgment, prevents misjudgments of the transformer's neutral point grounding status, and further enhances the safety of the power grid operation.

[0100] Optional, Figure 6 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention. Based on the above embodiments, see... Figure 6 The neutral point grounding detection method for transformers includes:

[0101] S101. Obtain busbar connection information of the substation.

[0102] S102. Based on the busbar wiring information of the substation, determine the number of transformers whose neutral point can be grounded.

[0103] S103. Obtain the neutral point grounding priority information of the transformer.

[0104] S601. Obtain the neutral point grounding status of the transformer.

[0105] Specifically, before confirming whether the neutral point grounding status of the transformer is correct, it is necessary to first obtain the neutral point grounding status of the transformers within the current substation. Based on the current neutral point grounding status of the transformers within the substation and the neutral point grounding priority information, it can be confirmed whether the neutral point grounding status of the transformer is correct.

[0106] S104. Confirm the neutral point grounding status of the transformer based on the neutral point grounding priority information of the transformer.

[0107] Optional, Figure 7 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention. Based on the above embodiments, see... Figure 7 The neutral point grounding detection method for transformers includes:

[0108] S101. Obtain busbar connection information of the substation.

[0109] S102. Based on the busbar wiring information of the substation, determine the number of transformers whose neutral point can be grounded.

[0110] S103. Obtain the neutral point grounding priority information of the transformer.

[0111] S501. Based on the neutral point grounding status of the transformer and the neutral point grounding priority information of the transformer, determine whether the neutral point grounding status of the transformer meets the preset priority.

[0112] S701. If the neutral point grounding state of the transformer meets the preset priority, then the neutral point grounding state of the transformer shall be maintained.

[0113] Specifically, if the neutral point grounding status of the transformer meets the preset priority, then the neutral point grounding status of the transformer is correct, and the substation can maintain the current neutral point grounding status of the transformer.

[0114] S702. If the neutral point grounding state of the transformer does not meet the preset priority, then adjust the neutral point grounding state of the transformer.

[0115] Specifically, if the neutral point grounding status of a transformer does not conform to the preset priority, the transformer's neutral point grounding status is incorrect, and the substation needs to adjust the current neutral point grounding status of the transformer. By judging the neutral point grounding status of a transformer through preset priorities, transformers with incorrect grounding status can be quickly adjusted to prevent faults, thereby improving the safety and stability of the power grid.

[0116] Optional, Figure 8 This is a flowchart of another transformer neutral point grounding detection method provided by an embodiment of the present invention. Based on the above embodiments, see... Figure 8The neutral point grounding detection method for transformers includes:

[0117] S101. Obtain busbar connection information of the substation.

[0118] S102. Based on the busbar wiring information of the substation, determine the number of transformers whose neutral point can be grounded.

[0119] S103. Obtain the neutral point grounding priority information of the transformer.

[0120] S501. Based on the neutral point grounding status of the transformer and the neutral point grounding priority information of the transformer, determine whether the neutral point grounding status of the transformer meets the preset priority.

[0121] S701. If the neutral point grounding state of the transformer meets the preset priority, then the neutral point grounding state of the transformer shall be maintained.

[0122] S801. If the neutral point grounding status of the transformer does not meet the preset priority, a warning message will be issued.

[0123] Specifically, if the neutral point grounding status of the transformer does not meet the preset priority, it indicates that the neutral point grounding status of the transformer is incorrect. At this time, the substation will issue a warning message to remind the staff so that they can adjust the transformer as soon as possible.

[0124] S802. Adjust the neutral point grounding state of the transformer according to the control command information of the substation dispatch console.

[0125] The control command information is determined by the neutral point grounding priority information of the transformer.

[0126] Specifically, upon receiving a warning, staff will determine the transformer's grounding priority based on its neutral point grounding priority information and then adjust the transformer with an incorrect neutral point grounding status. For example, if a transformer with a grounding priority of 0 has its neutral point grounded, the transformer will be disconnected. If a transformer with a grounding priority of 1 has its neutral point not grounded, the transformer will be grounded. This setup allows for rapid adjustment of transformers with incorrect grounding status, preventing faults and improving the safety and stability of the power grid.

[0127] For example, Figure 9 This is a flowchart of another method for detecting the neutral point grounding of a transformer provided in an embodiment of the present invention. Figure 10 This is a topology diagram of a transformer in a power grid provided by an embodiment of the present invention. Combined with... Figure 9 and Figure 10 This paper explains the method for detecting neutral grounding of transformers in a substation with a single busbar connection.

[0128] S1, Begin.

[0129] S2. Obtain the neutral point grounding status and neutral point grounding priority of the transformer.

[0130] S3. Confirm whether the neutral point of the transformer is grounded. If yes, proceed to step S4; otherwise, proceed to step S5.

[0131] S4. Confirm whether the neutral point grounding priority of the transformer is 1. If yes, proceed to step S7; otherwise, proceed to step S6.

[0132] S5. Confirm whether the neutral point grounding priority of the transformer is 0. If yes, proceed to step S7; otherwise, proceed to step S6.

[0133] S6. Adjust the neutral point grounding status of the transformer.

[0134] S7, End.

[0135] It should be noted that when the neutral point grounding priority of the transformer is 0, it means that the transformer is operating with the neutral point ungrounded; when the neutral point grounding priority of the transformer is 1, it means that the transformer is operating with the neutral point grounded.

[0136] For example, Figure 11 This is a flowchart of another method for detecting the neutral point grounding of a transformer provided in an embodiment of the present invention. Figure 12 This is another topology diagram of a transformer in a power grid provided by an embodiment of the present invention. Combined with... Figure 11 and Figure 12 This paper explains the method for detecting neutral grounding of transformers in substations with multiple busbar connections.

[0137] S1, Begin.

[0138] S2. Obtain the neutral point grounding status, neutral point grounding priority, and busbar operation mode of the first transformer T1 and the second transformer T2. The busbar operation mode includes parallel operation and separate operation.

[0139] S3. Confirm whether the buses are operating in parallel. If yes, proceed to step S4; otherwise, proceed to step S6.

[0140] S4. Confirm whether both the first transformer T1 and the second transformer T2 are grounded. If yes, proceed to step S5; otherwise, proceed to step S14.

[0141] S5. Confirm whether the grounding priority of the first transformer T1 is 1. If yes, proceed to step S13; otherwise, proceed to step S12.

[0142] S6. Confirm whether both the first transformer T1 and the second transformer T2 are grounded. If yes, proceed to step S8; otherwise, proceed to step S7.

[0143] S7. Confirm whether the first transformer T1 is grounded. If yes, proceed to step S8; otherwise, proceed to step S9.

[0144] S8. Confirm whether the grounding priority of the first transformer T1 is 0. If yes, proceed to step S12; if no, proceed to step S14.

[0145] S9. Confirm whether the second transformer T2 is grounded. If yes, proceed to step S10; otherwise, proceed to step S11.

[0146] S10. Confirm whether the grounding priority of the second transformer T2 is 0. If yes, proceed to step S13; otherwise, proceed to step S14.

[0147] S11. Confirm the grounding priority of the first transformer T1 and the second transformer T2. If the grounding priority of the first transformer T1 is 0, proceed to step S12; if the grounding priority of the second transformer T2 is 0, proceed to step S13.

[0148] S12. After adjusting the neutral point grounding status of the first transformer T1, the process ends.

[0149] S13. After adjusting the neutral point grounding status of the second transformer T2, the process ends.

[0150] S14, End.

[0151] It should be noted that when the neutral point grounding priority of the first transformer T1 is 0, it means that the neutral point of the first transformer T1 is not grounded; when the neutral point grounding priority of the first transformer T1 is 1, it means that the neutral point of the first transformer T1 is grounded. When the neutral point grounding priority of the second transformer T2 is 0, it means that the neutral point of the second transformer T2 is not grounded; when the neutral point grounding priority of the second transformer T2 is 1, it means that the neutral point of the second transformer T2 is grounded.

[0152] Optional, Figure 13 This is a schematic diagram of a transformer neutral point grounding detection device provided in an embodiment of the present invention. Based on the above embodiment, see... Figure 13 The transformer neutral point grounding detection device 10 includes:

[0153] Module 11 is used to acquire busbar connection information of the substation;

[0154] The judgment module 12 is used to determine the number of transformers whose neutral point can be grounded based on the busbar wiring information of the substation.

[0155] The confirmation module 13 is used to confirm the neutral point grounding status of the transformer based on the neutral point grounding priority information of the transformer.

[0156] The acquisition module 11 is also used to acquire the neutral point grounding priority information of the transformer.

[0157] The transformer neutral point grounding detection device provided in this embodiment of the invention determines the number of transformers whose neutral points can be grounded by acquiring the busbar connection information of the substation. It also acquires the neutral point grounding priority information of the transformers and confirms the neutral point grounding status of the transformers based on this priority information. This prevents the expansion of power grid faults caused by misjudging the neutral point grounding status of transformers, thereby improving the safety and stability of power grid operation.

[0158] Optional, Figure 14 This is a schematic diagram of an electronic device provided in an embodiment of the present invention. Based on the above embodiment, see [link to other embodiments]. Figure 14 The electronic device 200 provided in this embodiment of the invention includes a processor 20 and a memory 30 communicatively connected to the processor 20. The memory 30 stores a computer program executable by the processor 20. The computer program is executed by the processor 20 to enable the processor 40 to execute the transformer neutral point grounding detection method in any of the above embodiments. The beneficial effects of the transformer neutral point grounding detection method in any of the above embodiments will not be elaborated further here.

[0159] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0160] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method of detecting a neutral point grounding of a transformer, characterized by, include: Obtain busbar connection information for the substation; Based on the busbar wiring information of the substation, determine the number of transformers whose neutral point can be grounded; Obtain the neutral point grounding priority information of the transformer; wherein, the neutral point grounding priority information of the transformer is used to confirm whether the transformer needs to be grounded and the grounding sequence; obtaining the neutral point grounding priority information of the transformer includes: Obtain the number of transformers in the substation; Based on the number of transformers in the substation, the preset neutral point grounding priority information of the transformers is confirmed; The neutral point grounding status of the transformer is confirmed based on the neutral point grounding priority information of the transformer. Specifically, the neutral point grounding state of the transformer is compared with the actual grounding situation of the transformer to determine whether the neutral point of the transformer is in the correct grounding state, so as to prevent misjudgment of the neutral point grounding state of the transformer. The step of confirming the neutral point grounding status of the transformer based on the neutral point grounding priority information of the transformer includes: Based on the neutral point grounding status of the transformer and the neutral point grounding priority information of the transformer, determine whether the neutral point grounding status of the transformer meets the preset priority. The preset priority is determined by the neutral point grounding priority information of the transformer.

2. The detection method according to claim 1, characterized in that, The acquisition of substation busbar connection information includes: Obtain the number and operating mode of the busbars of the substation; The busbars of the substation can be operated in parallel or in separate configurations.

3. The detection method according to claim 2, characterized in that, The step of determining the number of transformers with groundable neutral points based on the busbar wiring information of the substation includes: Based on the number of busbars and the operating mode of the substation, determine the neutral point grounding information of the substation; Based on the neutral point grounding information of the substation, determine the number of transformers whose neutral point can be grounded.

4. The method of claim 1, wherein, Before confirming the neutral point grounding status of the transformer based on the neutral point grounding priority information of the transformer, the method further includes: Obtain the neutral point grounding status of the transformer.

5. The method of claim 1, wherein After determining whether the neutral point grounding state of the transformer meets the preset priority based on the neutral point grounding state and the neutral point grounding priority information of the transformer, the method further includes: If the neutral point grounding state of the transformer meets the preset priority, then the neutral point grounding state of the transformer shall be maintained. If the neutral point grounding state of the transformer does not meet the preset priority, then the neutral point grounding state of the transformer is adjusted.

6. The detection method according to claim 5, characterized in that, If the neutral point grounding state of the transformer does not meet the preset priority, the neutral point grounding state of the transformer will be adjusted, including: If the neutral point grounding status of the transformer does not meet the preset priority, a warning message will be issued; Adjust the neutral point grounding status of the transformer according to the control command information from the dispatch console of the substation; The control command information is determined by the neutral point grounding priority information of the transformer.

7. A transformer neutral point grounding detection device, comprising: The acquisition module is used to acquire busbar connection information of the substation; The judgment module is used to determine the number of transformers whose neutral point can be grounded based on the busbar connection information of the substation. The confirmation module is used to confirm the neutral point grounding status of the transformer based on the neutral point grounding priority information of the transformer. The confirmation module is further configured to compare the neutral point grounding status of the transformer with the actual grounding status of the transformer to determine whether the neutral point of the transformer is in the correct grounding state, so as to prevent misjudgment of the neutral point grounding status of the transformer; the confirmation module is further configured to determine whether the neutral point grounding status of the transformer meets the preset priority based on the neutral point grounding status of the transformer and the neutral point grounding priority information of the transformer; wherein the preset priority is determined by the neutral point grounding priority information of the transformer; The acquisition module is further configured to acquire the neutral point grounding priority information of the transformer; wherein, the neutral point grounding priority information of the transformer is used to confirm whether the transformer needs to be grounded and the grounding sequence; the acquisition module is further configured to acquire the number of transformers in the substation; and based on the number of transformers in the substation, to confirm the preset neutral point grounding priority information of the transformer.

8. An electronic device, comprising: The electronic device includes: processor; The processor includes a memory that is communicatively connected to the processor; wherein the memory stores a computer program that can be executed by the processor to enable the processor to perform the transformer neutral point grounding detection method according to any one of claims 1-6.

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