Method and device for determining partial discharge position of substation simulation platform

Abstract

The invention discloses a method and a device for determining a partial discharge position of a substation simulation platform. The method comprises the steps that partial discharge signals of a transformer substation simulation platform under a target partial discharge condition are collected, and the partial discharge signals at least comprise a first partial discharge signal, a second partial discharge signal and a third partial discharge signal; based on the first partial discharge signal and the second partial discharge signal, determining a first partial discharge position of the substation simulation platform under a target partial discharge condition, the first partial discharge position being one of a simulation transformer side and a simulation gas insulated switchgear side; and determining a target partial discharge position of the substation simulation platform under the target partial discharge condition based on the first partial discharge position and the third partial discharge signal. The technical problem of low accuracy of the partial discharge position determination result of the transformer substation simulation platform in the prior art is solved.

Description

Technical Field

[0001] This application relates to the field of power systems, and more specifically, to a method and apparatus for determining the location of partial discharge on a substation simulation platform. Background Technology

[0002] With the continuous development of power systems, transformers and GIS (Gas Insulated Switchgear) equipment are playing an increasingly important role in the power grid. However, these devices are prone to partial discharge during operation, which seriously affects their service life and the safe and stable operation of the power grid. A substation simulation platform including transformers and GIS equipment can be constructed, and the location of partial discharge on the simulation platform can be determined by analyzing the partial discharge phenomena, thereby pinpointing the location of partial discharge in the substation itself.

[0003] In related technologies, partial discharge locations in substation simulation platforms are detected based on artificially imposed partial discharge defects. However, due to the imprecise model design of the substation simulation platform for transformers and GIS equipment, and the limited range of partial discharge phenomena it can simulate, significant errors occur in the determination of partial discharge locations. Therefore, these technologies suffer from the technical problem of low accuracy in determining the partial discharge locations of substation simulation platforms.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This application provides a method and apparatus for determining the partial discharge location of a substation simulation platform, which at least solves the technical problem of low accuracy in determining the partial discharge location of a substation simulation platform in related technologies.

[0006] According to one aspect of the embodiments of this application, a method for determining the partial discharge location of a substation simulation platform is provided, comprising: acquiring partial discharge signals of the substation simulation platform under target partial discharge conditions, wherein the partial discharge signals include at least: a first partial discharge signal of a simulated transformer included in the substation simulation platform, a second partial discharge signal of a simulated gas-insulated switchgear included in the substation simulation platform, and a third partial discharge signal of a cable included in the substation simulation platform; determining a first partial discharge location of the substation simulation platform under the target partial discharge conditions based on the first partial discharge signal and the second partial discharge signal, wherein the first partial discharge location is one of the simulated transformer side and the simulated gas-insulated switchgear side; and determining a target partial discharge location of the substation simulation platform under the target partial discharge conditions based on the first partial discharge location and the third partial discharge signal.

[0007] According to another aspect of the embodiments of this application, a partial discharge location determination device for a substation simulation platform is provided, comprising: a data acquisition module, configured to acquire partial discharge signals of the substation simulation platform under target partial discharge conditions, wherein the partial discharge signals include at least: a first partial discharge signal of a simulated transformer included in the substation simulation platform, a second partial discharge signal of a simulated gas-insulated switchgear included in the substation simulation platform, and a third partial discharge signal of a cable included in the substation simulation platform; a first determination module, configured to determine a first partial discharge location of the substation simulation platform under the target partial discharge conditions based on the first partial discharge signal and the second partial discharge signal, wherein the first partial discharge location is one of the simulated transformer side and the simulated gas-insulated switchgear side; and a second determination module, configured to determine a target partial discharge location of the substation simulation platform under the target partial discharge conditions based on the first partial discharge location and the third partial discharge signal.

[0008] According to another aspect of the embodiments of this application, a non-volatile storage medium is provided, which stores multiple instructions, any one of which is adapted to be loaded by a processor for a method for determining the partial discharge location of a substation simulation platform.

[0009] According to another aspect of the embodiments of this application, an electronic device is provided, including: one or more processors and a memory, the memory being used to store one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors cause the one or more processors to implement any one of the following methods for determining the partial discharge location of a substation simulation platform.

[0010] According to another aspect of the embodiments of this application, a computer program product is provided, which, when executed on a data processing device, is adapted to perform the steps of a method for determining the partial discharge location of a substation simulation platform.

[0011] In this embodiment, partial discharge signals from a substation simulation platform under target partial discharge conditions are collected. These partial discharge signals include at least: a first partial discharge signal from a simulated transformer included in the substation simulation platform; a second partial discharge signal from a simulated gas-insulated switchgear included in the substation simulation platform; and a third partial discharge signal from a cable included in the substation simulation platform. Based on the first and second partial discharge signals, a first partial discharge location of the substation simulation platform under the target partial discharge conditions is determined, wherein the first partial discharge location is either the simulated transformer side or the simulated gas-insulated switchgear side. Based on the first and third partial discharge signals, a target partial discharge location of the substation simulation platform under the target partial discharge conditions is determined. This achieves the goal of collecting and analyzing the first partial discharge signal from the simulated transformer, the second partial discharge signal from the simulated gas-insulated switchgear, and the third partial discharge signal from the cable, and determining the target partial discharge location of the substation simulation platform based on these partial discharge signals. This improves the accuracy of the partial discharge location determination results of the substation simulation platform, thereby solving the technical problem of low accuracy in determining the partial discharge location of the substation simulation platform in related technologies. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0013] Figure 1 This is a flowchart of a method for determining the partial discharge location of a substation simulation platform according to an embodiment of this application;

[0014] Figure 2 This is a structural diagram of an optional substation simulation platform provided according to an embodiment of this application;

[0015] Figure 3 This is a flowchart of an optional method for determining the partial discharge location of a substation simulation platform according to an embodiment of this application;

[0016] Figure 4 This is a schematic diagram of a partial discharge location determination device for an optional substation simulation platform provided according to an embodiment of this application. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0018] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application 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 this application 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 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.

[0019] According to an embodiment of this application, a method embodiment for determining the partial discharge location of a substation simulation platform is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0020] Figure 1 This is a flowchart of a method for determining the partial discharge location of a substation simulation platform according to an embodiment of this application, as shown below. Figure 1 As shown, the method includes the following steps:

[0021] Step S102: Collect partial discharge signals of the substation simulation platform under the target partial discharge conditions. The partial discharge signals include at least: a first partial discharge signal of the simulated transformer included in the substation simulation platform, a second partial discharge signal of the simulated gas-insulated switchgear included in the substation simulation platform, and a third partial discharge signal of the cable included in the substation simulation platform.

[0022] It is understandable that signal acquisition equipment, such as HFCT sensors (High-Frequency Current Transformers), is used to collect partial discharge signals from multiple components within the substation simulation platform under target partial discharge conditions. These components include a simulated transformer, simulated gas-insulated switchgear, and cables. By acquiring the partial discharge signals from these components, a first partial discharge signal from the simulated transformer, a second partial discharge signal from the simulated gas-insulated switchgear, and a third partial discharge signal from the cables are obtained. Comprehensive and accurate acquisition of these partial discharge signals lays the foundation for subsequent determination of the partial discharge location within the substation simulation platform, improving the accuracy of the determination results.

[0023] In an optional embodiment, before acquiring the partial discharge signal of the substation simulation platform under the target partial discharge condition, the method further includes: determining the first size information and first structural information of the target transformer included in the target substation, and the second size information and second structural information of the target gas-insulated switchgear included in the target substation; and constructing the substation simulation platform based on the first size information, the first structural information, the second size information, the second structural information, and a preset scaling ratio.

[0024] It is understandable that a substation simulation platform needs to be constructed before partial discharge signal acquisition. First, the first dimensional and structural information of the target transformer and the second dimensional and structural information of the target gas-insulated switchgear in the target substation simulated by the substation simulation platform are determined. Based on the aforementioned first dimensional, first structural, second dimensional, and second structural information, the substation simulation platform is constructed by scaling according to a preset scaling ratio. By accurately determining the dimensional and structural information of the target transformer and the target gas-insulated switchgear, the realism and functionality of the constructed substation simulation platform can be improved, thereby increasing the accuracy of the partial discharge location determination results from the substation simulation platform.

[0025] Optionally, the scaling ratio of the substation simulation platform can be determined based on the physical characteristics of the target transformer and the target gas-insulated switchgear, considering the principles of electric field consistency, magnetic field strength distribution consistency, and signal transmission consistency between the target substation and the substation simulation platform. The physical characteristics of the target transformer and the target gas-insulated switchgear include electric field distribution, magnetic field strength, and discharge threshold. The scaling ratio should be selected to ensure that the substation simulation platform can reproduce these characteristics, and that even after scaling down, the physical behavior of the substation simulation platform still matches the actual equipment. The electric field consistency principle means that the electric field distribution of the substation simulation platform is similar to that of the target substation. The magnetic field strength distribution consistency principle means that the magnetic field distribution and magnetic field strength of the substation simulation platform are similar to those of the target substation. The signal transmission consistency principle means that the transmission characteristics of high-frequency signals in the substation simulation platform are consistent with those in the target substation, including signal attenuation, reflection, and scattering, to reduce errors in signal processing and location determination. Furthermore, different preset scaling ratios can be selected to construct the substation simulation platform according to different research needs and experimental conditions. For example, when studying the local electromagnetic characteristics of a device, a smaller preset scaling ratio can be used to improve simulation accuracy; while when conducting overall performance testing, the preset scaling ratio can be appropriately increased to save costs and experimental time.

[0026] Optionally, to determine the target partial discharge location of the substation simulation platform, a substation simulation platform is first constructed. The platform can be designed according to the actual dimensions of the target transformer and the target gas-insulated switchgear, at a certain scale (i.e., a preset scaling ratio). The internal structure of the substation simulation platform, such as windings, cores, and insulating components, is scaled proportionally according to the preset scaling ratio to ensure that the substation simulation platform is similar to the target substation in terms of electromagnetic characteristics, thereby more realistically reflecting the operating status of the target substation.

[0027] Optionally, multiple flexibly adjustable defect buckets can be installed inside and outside the substation simulation platform. The shape, size, and position of the defect buckets can be designed and adjusted according to actual needs to simulate partial discharge defects of different locations and types (such as insulation defects, electrode defects, etc.), improving the diversity and flexibility of the simulation. Simultaneously, distributed HFCT sensors are deployed on the substation simulation platform, including seven sensors: core self-sensing UHF (Ultra High Frequency), core HFCT, neutral point HFCT, enclosure wall HFCT, cable grounding HFCT, cable HFCT, and GIS grounding HFCT.

[0028] Optionally, the types of defect buckets can be diversified. In addition to common insulation defect buckets and electrode defect buckets, other types of defect buckets can be designed, such as wire defect buckets and connector defect buckets, to more comprehensively simulate various partial discharge situations that may occur in actual situations.

[0029] Optionally, the distributed sensors used to acquire partial discharge signals can employ a combination of different types of sensors, such as combining ultra-high frequency sensors with ultrasonic sensors, leveraging their respective advantages to improve the detection accuracy and reliability of partial discharge signals. Simultaneously, the sensor arrangement can be adjusted and optimized, such as using array arrangements or layered arrangements, to better adapt to the monitoring needs of different substation simulation platform structures and partial discharge locations.

[0030] Step S104: Based on the first partial discharge signal and the second partial discharge signal, determine the first partial discharge position of the substation simulation platform under the target partial discharge condition, wherein the first partial discharge position is one of the simulated transformer side and the simulated gas-insulated switchgear side.

[0031] It is understandable that the first partial discharge location is identified based on the collected first partial discharge signal from the simulated transformer and the second partial discharge signal from the simulated gas-insulated switchgear. This first partial discharge location is located either on the simulated transformer side or on the simulated gas-insulated switchgear side. Analysis of the first and second partial discharge signals can improve the accuracy of the partial discharge location determination and reduce positioning errors.

[0032] In one optional embodiment, determining the first partial discharge location of the substation simulation platform under the target partial discharge condition based on the first partial discharge signal and the second partial discharge signal includes: determining the neutral point signal bandwidth of the neutral point signal included in the first partial discharge signal and the second partial discharge signal bandwidth of the second partial discharge signal, wherein the neutral point signal is collected from the neutral point of the simulated transformer, and the neutral point refers to the electrical connection point between the simulated transformer and the ground; if the neutral point signal bandwidth is less than the second partial discharge signal bandwidth, the first partial discharge location is determined to be on the simulated transformer side; if the neutral point signal bandwidth is greater than or equal to the second partial discharge signal bandwidth, the first partial discharge location is determined to be on the simulated gas-insulated switchgear side.

[0033] It is understood that the first partial discharge signal includes the neutral point signal bandwidth acquired from the neutral point of the simulated transformer, and the second partial discharge signal bandwidth includes the second partial discharge signal bandwidth. The neutral point of the simulated transformer refers to the electrical connection point between the simulated transformer and the ground. By comparing the neutral point signal bandwidth and the second partial discharge signal bandwidth, if the neutral point signal bandwidth is less than the second partial discharge signal bandwidth, the first partial discharge location on the substation simulation platform is determined to be on the simulated transformer side; if the neutral point signal bandwidth is greater than or equal to the second partial discharge signal bandwidth, the first partial discharge location on the substation simulation platform is determined to be on the simulated gas-insulated switchgear side. By accurately measuring and comparing the neutral point signal bandwidth and the second partial discharge signal bandwidth, the partial discharge activity on the simulated transformer side and the simulated gas-insulated switchgear side can be effectively distinguished, improving the accuracy of the partial discharge location determination results.

[0034] Optionally, the occupied bandwidth (OBW) of the local signal is calculated, i.e., the frequency range occupied by the signal. The neutral point signal bandwidth of the neutral point HFCT signal (i.e., the neutral point signal) is compared with the second partial discharge signal bandwidth of the GIS equipment HFCT signal (i.e., the second partial discharge signal). If the neutral point signal bandwidth is less than the second partial discharge signal bandwidth, the partial discharge location (i.e., the first partial discharge location) is on the transformer side (i.e., the simulated transformer side); otherwise, it is on the GIS side (i.e., the simulated gas-insulated switchgear side).

[0035] Step S106: Based on the first partial discharge location and the third partial discharge signal, determine the target partial discharge location of the substation simulation platform under the target partial discharge conditions.

[0036] It is understandable that, based on the first partial discharge location of the substation simulation platform and combined with the third partial discharge signal of the cable, the target partial discharge location of the substation simulation platform under the target partial discharge conditions can be identified. By combining the third partial discharge signal of the cable with the already determined first partial discharge location, the location of the partial discharge can be further refined, thereby further improving the accuracy of the partial discharge location determination results of the substation simulation platform.

[0037] In an optional embodiment, when the first partial discharge location is on the side of a simulated gas-insulated switchgear, the target partial discharge location of the substation simulation platform under the target partial discharge condition is determined based on the first partial discharge location and the third partial discharge signal. This includes: determining the first cable signal bandwidth of the first cable signal included in the third partial discharge signal, and the second partial discharge signal bandwidth of the second partial discharge signal, wherein the first cable signal is used to describe the high-frequency current change flowing through the grounding wire of the cable; when the first cable signal bandwidth is less than the second partial discharge signal bandwidth, the target partial discharge location is determined to be the cable sheath of the cable; when the first cable signal bandwidth is greater than or equal to the second partial discharge signal bandwidth, the target partial discharge location is determined to be the housing of the simulated gas-insulated switchgear.

[0038] It is understood that if the first partial discharge location of the substation simulation platform is the simulated gas-insulated switchgear side, the target partial discharge location of the substation simulation platform under the target partial discharge condition is determined as follows: First, the bandwidth of the first cable signal (used to describe the high-frequency current change flowing through the grounding wire of the cable) and the bandwidth of the second partial discharge signal (included in the third partial discharge signal) are determined. Second, the bandwidths of the first cable signal and the second partial discharge signal are compared. If the bandwidth of the first cable signal is less than the bandwidth of the second partial discharge signal, the target partial discharge location of the substation simulation platform is determined to be the cable sheath; if the bandwidth of the first cable signal is greater than or equal to the bandwidth of the second partial discharge signal, the target partial discharge location of the substation simulation platform is determined to be the simulated gas-insulated switchgear casing. By accurately measuring and comparing the bandwidths of the first cable signal and the second partial discharge signal, the discharge of the cable sheath and the discharge of the simulated gas-insulated switchgear casing can be effectively distinguished, improving the accuracy of the target partial discharge location determination.

[0039] Optionally, if the first partial discharge location is located on the GIS side, the bandwidth of the first cable signal of the cable grounding HFCT signal (i.e., the first cable signal) is compared with the bandwidth of the second partial discharge signal of the GIS equipment HFCT signal. If the bandwidth of the first cable signal is less than the bandwidth of the second partial discharge signal, the partial discharge location (i.e., the target partial discharge location) is closer to the cable sheath; otherwise, the partial discharge is closer to the GIS casing (i.e., the casing of the simulated gas-insulated switchgear).

[0040] In an optional embodiment, when the first partial discharge location is on the simulated transformer side, determining the target partial discharge location of the substation simulation platform under the target partial discharge condition based on the first partial discharge location and the third partial discharge signal includes: detecting a first core signal included in the first partial discharge signal to obtain a first detection result, wherein the first core signal is used to describe the high-frequency discharge activity characteristics of the core region of the simulated transformer, and the first detection result is used to determine whether there is a discharge pulse waveform in the first core signal; detecting a second core signal included in the first partial discharge signal to obtain a second detection result, wherein the second core signal is used to describe the high-frequency current change propagating through the core grounding wire of the simulated transformer, and the second detection result is used to determine whether there is a discharge pulse waveform in the second core signal; determining the second partial discharge location of the substation simulation platform under the target partial discharge condition based on the first detection result and the second detection result, wherein the second partial discharge location is one of the interior and exterior of the simulated transformer; and determining the target partial discharge location based on the second partial discharge location and the third partial discharge signal.

[0041] It is understood that if the first partial discharge location of the substation simulation platform is on the simulated transformer side, the target partial discharge location of the substation simulation platform under the target partial discharge condition is determined as follows: First, the first core signal included in the first partial discharge signal is detected to determine whether a discharge pulse waveform exists in the first core signal, obtaining a first detection result. The first core signal describes the high-frequency discharge activity characteristics of the core region of the simulated transformer. Second, the second core signal included in the first partial discharge signal is detected to determine whether a discharge pulse waveform exists in the second core signal, which describes the high-frequency current change propagating through the core grounding wire of the simulated transformer, obtaining a second detection result. Next, based on the first and second detection results, the second partial discharge location of the substation simulation platform under the target partial discharge condition is determined. The second partial discharge location is either inside or outside the simulated transformer. Finally, based on the second partial discharge location of the substation simulation platform and combined with the third partial discharge signal, the target partial discharge location of the substation simulation platform is determined. By comprehensively analyzing the discharge activity characteristics of the core area and the current changes on the core grounding wire, it is possible to accurately determine whether the partial discharge occurs inside or outside the simulated transformer, avoiding judgment errors caused by analyzing a single partial discharge signal and improving the accuracy of the target partial discharge location determination results of the substation simulation platform.

[0042] Optionally, the second partial discharge location can be determined as follows: If both the first and second detection results indicate the presence of a discharge pulse waveform, the second partial discharge location is inside the simulated transformer; otherwise, the second partial discharge location is outside the simulated transformer.

[0043] Optionally, if the first partial discharge location is located on the transformer side, the self-sensing UHF signal (i.e., the first core signal) and the core HFCT signal (i.e., the second core signal) are detected. If a discharge pulse waveform exists in both signals, the partial discharge location (i.e., the second partial discharge location) is located inside the transformer (i.e., inside the simulated transformer); otherwise, it is located outside the transformer (i.e., outside the simulated transformer).

[0044] In one optional embodiment, when the second partial discharge location is outside the simulated transformer, determining the target partial discharge location based on the second partial discharge location and the third partial discharge signal includes: determining the bandwidth of the enclosure wall signal included in the first partial discharge signal and the bandwidth of the first cable signal included in the third partial discharge signal, wherein the enclosure wall signal is used to describe the electromagnetic radiation characteristics generated by partial discharge activity near the enclosure wall of the simulated transformer, and the first cable signal is used to describe the high-frequency current change flowing through the grounding wire of the cable; when the bandwidth of the enclosure wall signal is less than the bandwidth of the first cable signal, the target partial discharge location is determined to be the outer shell of the simulated transformer; when the bandwidth of the enclosure wall signal is greater than or equal to the bandwidth of the first cable signal, the target partial discharge location is determined to be the cable side.

[0045] It is understood that if the second partial discharge location of the substation simulation platform is outside the simulated transformer, the target partial discharge location of the substation simulation platform under the target partial discharge condition is determined as follows: First, the bandwidth of the enclosure wall signal included in the first partial discharge signal and the bandwidth of the first cable signal included in the third partial discharge signal are determined. The enclosure wall signal is used to describe the electromagnetic radiation characteristics generated by partial discharge activity near the enclosure wall of the simulated transformer. Second, the bandwidth of the enclosure wall signal and the bandwidth of the first cable signal are compared. If the bandwidth of the enclosure wall signal is less than the bandwidth of the first cable signal, the target partial discharge location of the substation simulation platform is determined to be the outer casing of the simulated transformer; if the bandwidth of the enclosure wall signal is greater than or equal to the bandwidth of the first cable signal, the target partial discharge location of the substation simulation platform is determined to be on the cable side. By comparing the bandwidth of the enclosure wall signal and the bandwidth of the first cable signal, it is possible to further determine whether the partial discharge is on the outer casing of the simulated transformer or on the cable side, thereby further improving the refinement and accuracy of the target partial discharge location determination result.

[0046] Optionally, if the second partial discharge location is located outside the transformer, the bandwidth of the HFCT signal on the enclosure wall (i.e., the enclosure wall signal) is compared with the bandwidth of the first cable signal on the HFCT signal on the cable ground. If the bandwidth of the enclosure wall signal is less than the bandwidth of the first cable signal, the partial discharge location (i.e., the target partial discharge location) is located near the transformer casing (i.e., the casing of the simulated transformer); otherwise, it is located on the cable side.

[0047] In an optional embodiment, the method further includes: detecting a first cable signal included in the third partial discharge signal to obtain a third detection result, wherein the third detection result is used to determine whether a discharge pulse waveform exists in the first cable signal, and the first cable signal is used to describe the high-frequency current change flowing through the grounding wire of the cable; detecting a second cable signal included in the third partial discharge signal to obtain a fourth detection result, wherein the fourth detection result is used to determine whether a discharge pulse waveform exists in the second cable signal, and the second cable signal is used to describe the high-frequency current change flowing through the cable; determining a third partial discharge location of the substation simulation platform under the target partial discharge condition based on the third detection result and the fourth detection result, wherein the third partial discharge location is one of the interior of the cable, the cable sheath of the cable, and the interior of the simulated transformer or the interior of the simulated gas-insulated switchgear; and determining a target partial discharge location based on the third partial discharge location, the first partial discharge signal, and the second partial discharge signal.

[0048] It is understood that the first cable signal included in the third partial discharge signal is detected to obtain a third detection result for determining whether a discharge pulse waveform exists in the first cable signal. Next, the second cable signal included in the third partial discharge signal is detected to determine whether a discharge pulse waveform exists in the second cable signal, which describes the high-frequency current change flowing through the cable, resulting in a fourth detection result. Then, based on the third and fourth detection results, the third partial discharge location of the substation simulation platform under the target partial discharge condition is determined. This third partial discharge location can be one of the following: inside the cable, on the cable sheath, or inside the simulated transformer or the simulated gas-insulated switchgear. Finally, based on the third partial discharge location, combined with the first partial discharge signal from the simulated transformer and the second partial discharge signal from the simulated gas-insulated switchgear, the target partial discharge location of the substation simulation platform is determined. By separately detecting the discharge pulse waveforms of the cable grounding wire and inside the cable, the internal discharge of the cable, the discharge from the cable sheath, and the internal discharge of the simulated transformer or the simulated gas-insulated switchgear can be effectively distinguished, improving the accuracy of the target partial discharge location determination.

[0049] Optionally, the location of the third partial discharge can be determined as follows: If both the third and fourth detection results indicate the presence of a discharge pulse waveform, the location of the third partial discharge is inside the cable; if the third detection result indicates the presence of a discharge pulse waveform but the fourth detection result indicates the absence of a discharge pulse waveform, the location of the third partial discharge is the cable sheath; if the third detection result indicates the absence of a discharge pulse waveform but the fourth detection result indicates the presence of a discharge pulse waveform, the location of the third partial discharge is inside the simulated transformer or inside the simulated gas-insulated switchgear.

[0050] Optionally, the cable grounding HFCT signal and the cable HFCT signal (i.e., the second cable signal) are compared. If discharge pulse waveforms are present in both signals, the partial discharge location (i.e., the third partial discharge location) is located inside the cable. If only the cable grounding HFCT signal has a discharge pulse waveform, the third partial discharge location is located near the cable sheath (i.e., the cable sheath). If only the cable HFCT signal has a discharge pulse waveform, the third partial discharge location is located inside the transformer or GIS (i.e., inside the simulated transformer or inside the simulated gas-insulated switchgear).

[0051] In one optional embodiment, when the third partial discharge location is inside a simulated transformer or inside a simulated gas-insulated switchgear, determining the target partial discharge location based on the third partial discharge location, the first partial discharge signal, and the second partial discharge signal includes: determining the neutral point signal bandwidth of the neutral point signal included in the first partial discharge signal, and the second partial discharge signal bandwidth of the second partial discharge signal, wherein the neutral point signal is collected from the neutral point of the simulated transformer, and the neutral point refers to the electrical connection point between the simulated transformer and the ground; if the neutral point signal bandwidth is less than the second partial discharge signal bandwidth, the target partial discharge location is determined to be inside the simulated transformer; if the neutral point signal bandwidth is greater than or equal to the second partial discharge signal bandwidth, the target partial discharge location is determined to be inside the simulated gas-insulated switchgear.

[0052] It is understood that if the third partial discharge location of the substation simulation platform is inside the simulated transformer or inside the simulated gas-insulated switchgear, the target partial discharge location of the substation simulation platform under the target partial discharge conditions is determined as follows: First, determine the neutral point signal bandwidth of the neutral point signal included in the first partial discharge signal, and the second partial discharge signal bandwidth of the second partial discharge signal. Second, compare the neutral point signal bandwidth and the second partial discharge signal bandwidth. If the neutral point signal bandwidth is less than the second partial discharge signal bandwidth, the target partial discharge location of the substation simulation platform is determined to be inside the simulated transformer; if the neutral point signal bandwidth is greater than or equal to the second partial discharge signal bandwidth, the target partial discharge location of the substation simulation platform is determined to be inside the simulated gas-insulated switchgear. Under the condition that the partial discharge location is inside the simulated transformer or inside the simulated gas-insulated switchgear, by comparing the neutral point signal bandwidth and the second partial discharge signal bandwidth, it is possible to effectively distinguish whether the partial discharge activity originates from inside the simulated transformer or inside the simulated gas-insulated switchgear, thereby improving the accuracy of the target partial discharge location determination result.

[0053] Optionally, if the third partial discharge location is located inside the simulated transformer or the simulated gas-insulated switchgear, the neutral point signal bandwidth of the neutral point HFCT signal is compared with the second partial discharge signal bandwidth of the HFCT signal of the GIS device. If the neutral point signal bandwidth is less than the second partial discharge signal bandwidth, the partial discharge location (i.e., the target partial discharge location) is located inside the transformer (i.e., inside the simulated transformer); otherwise, it is located inside the GIS (i.e., inside the simulated gas-insulated switchgear).

[0054] Through the above steps S102 to S106, the goal of collecting and analyzing the first partial discharge signal of the simulated transformer, the second partial discharge signal of the simulated gas-insulated switchgear, and the third partial discharge signal of the cable, and determining the target partial discharge location of the substation simulation platform based on the above partial discharge signals, can be achieved. This improves the accuracy of the partial discharge location determination result of the substation simulation platform, thereby solving the technical problem of low accuracy in determining the partial discharge location of the substation simulation platform in related technologies.

[0055] Based on the above embodiments and optional embodiments, this application proposes an implementation method for determining the partial discharge location of an optional substation simulation platform. By constructing a substation simulation platform of the target substation and collecting the partial discharge signal of the substation simulation platform, the target partial discharge location of the collected substation simulation platform is determined, and then the partial discharge situation of the target substation is analyzed.

[0056] The following problems exist in the construction of substation simulation platforms and the detection of partial discharge locations in substation simulation platforms: (1) The substation simulation platform is not accurate enough. It does not strictly follow the principle of proportional scaling to construct a complete closed indoor substation transformer equipment (i.e., the target substation) structure, which causes the partial discharge simulation results to deviate from the actual situation, resulting in a large error in the determination of the target partial discharge location of the substation simulation platform. (2) The constructed substation simulation platform can only simulate a single or a few fixed partial discharge defects. It cannot flexibly adjust the defect position to simulate the partial discharge situation under different partial discharge conditions. This is not conducive to studying the influence law of different defect positions on partial discharge characteristics, and it is also difficult to meet the complex and varied partial discharge defect detection needs in actual situations. (3) The transformer and GIS equipment are studied separately, which makes the distributed sensor (i.e., partial discharge signal acquisition equipment) layout unreasonable, resulting in a large error in the detection results of the partial discharge location, and it is impossible to accurately identify the specific location of the partial discharge source.

[0057] To determine the target partial discharge location in the substation simulation platform, the platform is first constructed. Based on the actual dimensions of the target transformer and the target gas-insulated switchgear, the simulation platform is designed to a specific scale (i.e., a preset scaling ratio). The internal structure of the simulation platform, such as windings, cores, and insulation components, is scaled proportionally to the preset scaling ratio to ensure that the simulation platform is similar to the target substation in terms of electromagnetic characteristics, thus more realistically reflecting the operating status of the target substation.

[0058] Multiple flexibly adjustable defect buckets are installed both inside and outside the substation simulation platform. The shape, size, and position of the defect buckets can be designed and adjusted according to actual needs to simulate partial discharge defects of different locations and types (such as insulation defects, electrode defects, etc.), improving the diversity and flexibility of the simulation. Simultaneously, distributed HFCT sensors are deployed on the substation simulation platform, including seven sensors: core self-sensing UHF (Ultra High Frequency) sensor, core HFCT, neutral point HFCT, enclosure wall HFCT, cable grounding HFCT, cable HFCT, and GIS grounding HFCT.

[0059] Figure 2 This is a structural diagram of an optional substation simulation platform provided according to an embodiment of this application, such as... Figure 2As shown, the substation simulation platform includes a transformer (i.e., a simulated transformer), GIS equipment (i.e., a simulated gas-insulated switchgear), and cables. Seven sensors are arranged on the substation simulation platform, including a core self-sensing UHF sensor, a core HFCT, a neutral point HFCT, a tank wall HFCT, a cable grounding HFCT, a cable HFCT, and a GIS grounding HFCT, to collect partial discharge signals at different locations of the transformer, GIS equipment, and cables on the substation simulation platform.

[0060] Figure 3 This is a flowchart of an optional method for determining the partial discharge location of a substation simulation platform according to an embodiment of this application, as shown below. Figure 3 As shown Figure 2 The process of determining the target partial discharge location on a substation simulation platform is described below.

[0061] Step S1, collect Figure 2 The output signals (i.e., partial discharge signals) of the 7 sensors in the system.

[0062] Step S2: Calculate the bandwidth (OBW) of the seven partial discharge signals, which is the frequency range occupied by the signals.

[0063] Step S3: Compare the neutral point signal bandwidth of the neutral point HFCT signal (i.e., the neutral point signal) with the second partial discharge signal bandwidth of the GIS equipment HFCT signal (i.e., the second partial discharge signal). If the neutral point signal bandwidth is less than the second partial discharge signal bandwidth, the partial discharge location (i.e., the first partial discharge location) is on the transformer side (i.e., the simulated transformer side); otherwise, it is on the GIS side (i.e., the simulated gas-insulated switchgear side).

[0064] Step S4: If the first partial discharge location is located on the GIS side, compare the bandwidth of the first cable signal of the cable grounding HFCT signal (i.e., the first cable signal) with the bandwidth of the second partial discharge signal of the GIS equipment HFCT signal. If the bandwidth of the first cable signal is less than the bandwidth of the second partial discharge signal, the partial discharge location (i.e., the target partial discharge location) is closer to the cable sheath; otherwise, the partial discharge is closer to the GIS casing (i.e., the casing of the simulated gas-insulated switchgear).

[0065] Step S5: If the first partial discharge location is located on the transformer side, detect the self-sensing UHF signal (i.e., the first core signal) and the core HFCT signal (i.e., the second core signal). If there is a discharge pulse waveform in both signals, the partial discharge location (i.e., the second partial discharge location) is located inside the transformer (i.e., inside the simulated transformer); otherwise, it is located outside the transformer (i.e., outside the simulated transformer).

[0066] Step S6: If the second partial discharge location is located outside the transformer, compare the bandwidth of the HFCT signal on the enclosure wall (i.e., the enclosure wall signal) with the bandwidth of the first cable signal on the HFCT signal on the cable ground. If the bandwidth of the enclosure wall signal is less than the bandwidth of the first cable signal, then the partial discharge location (i.e., the target partial discharge location) is located near the transformer casing (i.e., the casing of the simulated transformer); otherwise, it is located on the cable side.

[0067] In addition, the target partial discharge location of the substation simulation platform can be determined as follows: First, compare the cable grounding HFCT signal with the cable HFCT signal (i.e., the second cable signal). If discharge pulse waveforms are present in both signals, the partial discharge location (i.e., the third partial discharge location) is located inside the cable. If only the cable grounding HFCT signal has a discharge pulse waveform, the third partial discharge location is located near the cable sheath (i.e., the cable sheath). If only the cable HFCT signal has a discharge pulse waveform, the third partial discharge location is located inside the transformer or GIS (i.e., inside the simulated transformer or inside the simulated gas-insulated switchgear). Second, if the third partial discharge location is located inside the simulated transformer or inside the simulated gas-insulated switchgear, compare the neutral point signal bandwidth of the neutral point HFCT signal with the second partial discharge signal bandwidth of the GIS equipment HFCT signal. If the neutral point signal bandwidth is less than the second partial discharge signal bandwidth, the partial discharge location (i.e., the target partial discharge location) is located inside the transformer (i.e., inside the simulated transformer); otherwise, it is located inside the GIS (i.e., inside the simulated gas-insulated switchgear).

[0068] The above-mentioned optional implementation methods achieve at least the following effects: by scaling down, the substation simulation platform can more realistically reflect the structure and electromagnetic characteristics of the target transformer and the target gas-insulated switchgear, improving the accuracy and reliability of the substation simulation platform; by arranging multiple defect barrels with adjustable positions, shapes, and sizes inside and outside the substation simulation platform, the flexibility and diversity of partial discharge defect simulation can be improved; by using distributed sensors to measure partial discharge signals and determine the bandwidth of the partial discharge signals, the accuracy of the target partial discharge location determination results of the substation simulation platform can be improved.

[0069] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0070] This embodiment also provides a partial discharge location determination device for a substation simulation platform. This device is used to implement the above embodiments and preferred embodiments, and details already described will not be repeated. As used below, the terms "module" and "device" can refer to a combination of software and / or hardware that performs a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0071] According to an embodiment of this application, an apparatus embodiment for implementing a partial discharge location determination method for a substation simulation platform is also provided. Figure 4 This is a schematic diagram of a partial discharge location determination device for a substation simulation platform according to an embodiment of this application, as shown below. Figure 4 As shown, the partial discharge location determination device of the above-mentioned substation simulation platform includes a data acquisition module 402, a first determination module 404, and a second determination module 406. The device will be described below.

[0072] The data acquisition module 402 is used to acquire the partial discharge signal of the substation simulation platform under the target partial discharge condition. The partial discharge signal includes at least: the first partial discharge signal of the simulated transformer included in the substation simulation platform, the second partial discharge signal of the simulated gas-insulated switchgear included in the substation simulation platform, and the third partial discharge signal of the cable included in the substation simulation platform.

[0073] The first determining module 404 is connected to the data acquisition module 402 and is used to determine the first partial discharge position of the substation simulation platform under the target partial discharge condition based on the first partial discharge signal and the second partial discharge signal. The first partial discharge position is one of the simulated transformer side and the simulated gas-insulated switchgear side.

[0074] The second determining module 406, connected to the first determining module 404, is used to determine the target partial discharge position of the substation simulation platform under the target partial discharge condition based on the first partial discharge position and the third partial discharge signal.

[0075] In a partial discharge location determination device for a substation simulation platform provided in this application embodiment, a data acquisition module 402 is set up to acquire partial discharge signals of the substation simulation platform under target partial discharge conditions. The partial discharge signals include at least: a first partial discharge signal of a simulated transformer included in the substation simulation platform, a second partial discharge signal of a simulated gas-insulated switchgear included in the substation simulation platform, and a third partial discharge signal of a cable included in the substation simulation platform. A first determination module 404, connected to the data acquisition module 402, is used to determine the first partial discharge location of the substation simulation platform under the target partial discharge conditions based on the first and second partial discharge signals. The first partial discharge location is either the simulated transformer side or the simulated gas-insulated switchgear side. A second determination module 406, connected to the first determination module 404, is used to determine the target partial discharge location of the substation simulation platform under the target partial discharge conditions based on the first and third partial discharge signals. The goal is to collect and analyze the first partial discharge signal of the simulated transformer, the second partial discharge signal of the simulated gas-insulated switchgear, and the third partial discharge signal of the cable, and to determine the target partial discharge location of the substation simulation platform based on the above partial discharge signals. This achieves the technical effect of improving the accuracy of the partial discharge location determination results of the substation simulation platform, and thus solves the technical problem of low accuracy of the partial discharge location determination results of the substation simulation platform in related technologies.

[0076] It should be noted that the above modules can be implemented by software or hardware. For example, for the latter, it can be implemented in the following ways: the above modules can be located in the same processor; or the above modules can be located in different processors in any combination.

[0077] It should be noted that the data acquisition module 402, the first determining module 404, and the second determining module 406 mentioned above correspond to steps S102 to S106 in the embodiments. The instances and application scenarios implemented by the above modules and their corresponding steps are the same, but they are not limited to the content disclosed in the above embodiments. It should also be noted that the above modules, as part of the device, can run on a computer terminal.

[0078] It should be noted that the optional or preferred implementation methods of this embodiment can be found in the relevant descriptions in the embodiments, and will not be repeated here.

[0079] The partial discharge location determination device of the above-mentioned substation simulation platform may also include a processor and a memory. The data acquisition module 402, the first determination module 404, the second determination module 406, etc. are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize the corresponding functions.

[0080] The processor contains a core that retrieves the corresponding program unit from memory. One or more cores may be configured. Memory may include non-persistent memory in computer-readable media, random access memory (RAM), and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory includes at least one memory chip.

[0081] This application provides a non-volatile storage medium storing a program that, when executed by a processor, implements a method for determining the partial discharge location of a substation simulation platform.

[0082] This application provides an electronic device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs the following steps: acquiring partial discharge signals from a substation simulation platform under target partial discharge conditions, wherein the partial discharge signals include at least: a first partial discharge signal from a simulated transformer included in the substation simulation platform, a second partial discharge signal from a simulated gas-insulated switchgear included in the substation simulation platform, and a third partial discharge signal from a cable included in the substation simulation platform; determining a first partial discharge location of the substation simulation platform under the target partial discharge conditions based on the first and second partial discharge signals, wherein the first partial discharge location is one of the simulated transformer side and the simulated gas-insulated switchgear side; and determining a target partial discharge location of the substation simulation platform under the target partial discharge conditions based on the first and third partial discharge signals. The device described herein may be a server, PC, etc.

[0083] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having the following method steps: acquiring partial discharge signals of a substation simulation platform under target partial discharge conditions, wherein the partial discharge signals include at least: a first partial discharge signal of a simulated transformer included in the substation simulation platform, a second partial discharge signal of a simulated gas-insulated switchgear included in the substation simulation platform, and a third partial discharge signal of a cable included in the substation simulation platform; determining a first partial discharge position of the substation simulation platform under the target partial discharge conditions based on the first partial discharge signal and the second partial discharge signal, wherein the first partial discharge position is one of the simulated transformer side and the simulated gas-insulated switchgear side; and determining a target partial discharge position of the substation simulation platform under the target partial discharge conditions based on the first partial discharge position and the third partial discharge signal.

[0084] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0085] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0086] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0087] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0088] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0089] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0090] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0091] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0092] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0093] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for determining the location of partial discharge on a substation simulation platform, characterized in that, include: The partial discharge signal of the substation simulation platform under the target partial discharge condition is collected, wherein the partial discharge signal includes at least: a first partial discharge signal of the simulated transformer included in the substation simulation platform, a second partial discharge signal of the simulated gas-insulated switchgear included in the substation simulation platform, and a third partial discharge signal of the cable included in the substation simulation platform. Based on the first partial discharge signal and the second partial discharge signal, the first partial discharge position of the substation simulation platform under the target partial discharge condition is determined, wherein the first partial discharge position is one of the simulated transformer side and the simulated gas-insulated switchgear side; Based on the first partial discharge location and the third partial discharge signal, the target partial discharge location of the substation simulation platform under the target partial discharge condition is determined.

2. The method according to claim 1, characterized in that, Before acquiring the partial discharge signal of the substation simulation platform under the target partial discharge condition, the method further includes: Determine the first size information and first structural information of the target transformer included in the target substation, and the second size information and second structural information of the target gas-insulated switchgear included in the target substation; The substation simulation platform is constructed based on the first size information, the first structural information, the second size information, the second structural information, and a preset scaling ratio.

3. The method according to claim 1, characterized in that, Determining the first partial discharge location of the substation simulation platform under the target partial discharge condition based on the first partial discharge signal and the second partial discharge signal includes: The neutral point signal bandwidth of the neutral point signal included in the first partial discharge signal and the second partial discharge signal bandwidth of the second partial discharge signal are determined, wherein the neutral point signal is collected from the neutral point of the simulated transformer, and the neutral point refers to the electrical connection point between the simulated transformer and the ground; If the bandwidth of the neutral point signal is less than the bandwidth of the second partial discharge signal, the first partial discharge location is determined to be the simulated transformer side; If the bandwidth of the neutral point signal is greater than or equal to the bandwidth of the second partial discharge signal, the first partial discharge location is determined to be the side of the simulated gas-insulated switchgear.

4. The method according to claim 1, characterized in that, When the first partial discharge location is on the side of the simulated gas-insulated switchgear, determining the target partial discharge location of the substation simulation platform under the target partial discharge condition based on the first partial discharge location and the third partial discharge signal includes: The first cable signal bandwidth of the first cable signal included in the third partial discharge signal and the second partial discharge signal bandwidth of the second partial discharge signal are determined, wherein the first cable signal is used to describe the high-frequency current change of the grounding wire flowing through the cable; When the bandwidth of the first cable signal is less than the bandwidth of the second partial discharge signal, the target partial discharge location is determined to be the cable sheath of the cable. When the bandwidth of the first cable signal is greater than or equal to the bandwidth of the second partial discharge signal, the target partial discharge location is determined to be the housing of the simulated gas-insulated switchgear.

5. The method according to claim 1, characterized in that, When the first partial discharge location is on the simulated transformer side, determining the target partial discharge location of the substation simulation platform under the target partial discharge condition based on the first partial discharge location and the third partial discharge signal includes: The first core signal included in the first partial discharge signal is detected to obtain a first detection result, wherein the first core signal is used to describe the high-frequency discharge activity characteristics of the core region of the simulated transformer, and the first detection result is used to determine whether there is a discharge pulse waveform in the first core signal; The second core signal included in the first partial discharge signal is detected to obtain a second detection result, wherein the second core signal is used to describe the high-frequency current change propagating through the core grounding wire of the simulated transformer, and the second detection result is used to determine whether there is a discharge pulse waveform in the second core signal; Based on the first detection result and the second detection result, the second partial discharge location of the substation simulation platform under the target partial discharge condition is determined, wherein the second partial discharge location is one of the interior of the simulated transformer and the exterior of the simulated transformer; The target partial discharge location is determined based on the second partial discharge location and the third partial discharge signal.

6. The method according to claim 5, characterized in that, When the second partial discharge location is outside the simulated transformer, determining the target partial discharge location based on the second partial discharge location and the third partial discharge signal includes: The bandwidth of the enclosure wall signal included in the first partial discharge signal and the bandwidth of the first cable signal included in the third partial discharge signal are determined. The enclosure wall signal is used to describe the electromagnetic radiation characteristics generated by partial discharge activity near the enclosure wall of the simulated transformer, and the first cable signal is used to describe the high-frequency current change of the grounding wire flowing through the cable. If the signal bandwidth of the enclosure wall is less than the signal bandwidth of the first cable, the target partial discharge location is determined to be the outer casing of the simulated transformer. If the signal bandwidth of the enclosure wall is greater than or equal to the signal bandwidth of the first cable, the target partial discharge location is determined to be on the cable side.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: The first cable signal included in the third partial discharge signal is detected to obtain a third detection result, wherein the third detection result is used to determine whether there is a discharge pulse waveform in the first cable signal, and the first cable signal is used to describe the high-frequency current change of the grounding wire flowing through the cable; The second cable signal included in the third partial discharge signal is detected to obtain a fourth detection result, wherein the fourth detection result is used to determine whether there is a discharge pulse waveform in the second cable signal, and the second cable signal is used to describe the high-frequency current change flowing through the cable; Based on the third detection result and the fourth detection result, the third partial discharge location of the substation simulation platform under the target partial discharge condition is determined, wherein the third partial discharge location is one of the following: the inside of the cable, the cable sheath of the cable, the inside of the simulated transformer, or the inside of the simulated gas-insulated switchgear. The target partial discharge location is determined based on the third partial discharge location, the first partial discharge signal, and the second partial discharge signal.

8. The method according to claim 7, characterized in that, When the third partial discharge location is inside the simulated transformer or inside the simulated gas-insulated switchgear, determining the target partial discharge location based on the third partial discharge location, the first partial discharge signal, and the second partial discharge signal includes: The neutral point signal bandwidth of the neutral point signal included in the first partial discharge signal and the second partial discharge signal bandwidth of the second partial discharge signal are determined, wherein the neutral point signal is collected from the neutral point of the simulated transformer, and the neutral point refers to the electrical connection point between the simulated transformer and the ground; When the bandwidth of the neutral point signal is less than the bandwidth of the second partial discharge signal, the target partial discharge location is determined to be inside the simulated transformer; If the bandwidth of the neutral point signal is greater than or equal to the bandwidth of the second partial discharge signal, the target partial discharge location is determined to be inside the simulated gas-insulated switchgear.

9. A device for determining the partial discharge location of a substation simulation platform, characterized in that, include: The data acquisition module is used to acquire partial discharge signals of the substation simulation platform under target partial discharge conditions, wherein the partial discharge signals include at least: a first partial discharge signal of the simulated transformer included in the substation simulation platform, a second partial discharge signal of the simulated gas-insulated switchgear included in the substation simulation platform, and a third partial discharge signal of the cable included in the substation simulation platform. The first determining module is used to determine the first partial discharge position of the substation simulation platform under the target partial discharge condition based on the first partial discharge signal and the second partial discharge signal, wherein the first partial discharge position is one of the simulated transformer side and the simulated gas-insulated switchgear side; The second determining module is used to determine the target partial discharge location of the substation simulation platform under the target partial discharge condition based on the first partial discharge location and the third partial discharge signal.

10. A non-volatile storage medium, characterized in that, The non-volatile storage medium stores multiple instructions, which are adapted to be loaded by a processor and executed by the method for determining the partial discharge location of the substation simulation platform according to any one of claims 1 to 8.

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