Device, method and system for testing equipment defects of power transformation equipment

Abstract

The present invention provides a device, method and system for performing equipment defect testing on substation equipment, which relates to the fields of power engineering technology and substation equipment testing. The substation equipment includes a transformer, and the device includes: at least one of the following defect simulation components: a discharge defect component. It is configured to simulate transformer defects by electrically connecting to the high-voltage winding turns of the transformer through a defect simulation component insertion hole that penetrates the transformer; a busbar defect component, which is configured to simulate an insulating busbar defect by electrically connecting to the transformer; a sensor, which is configured to collect local discharge signals of the substation equipment; and a processor, which is configured to determine the equipment defect test result based on the local discharge signal and at least one defect type simulated by at least one defect simulation component.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power engineering and the field of substation equipment testing, and more specifically, to a device, method and testing system for performing equipment defect testing on substation equipment. Background Art

[0002] Substation equipment is an important part of the power grid. The safe, stable and reliable operation of substation equipment plays an important role in ensuring power supply. Substation equipment can include transformers, switch cabinets, insulated busbars, etc. Substation equipment may fail during operation due to equipment defects, which may affect the stable operation of the power system. Summary of the invention

[0003] In view of this, the present invention provides an apparatus, method and test system for performing equipment defect testing on power transformation equipment.

[0004] One aspect of the present invention provides an apparatus for performing equipment defect testing on substation equipment, wherein the substation equipment includes a transformer, and the apparatus includes: the following defect simulation components: a discharge defect component, configured to simulate transformer defects by being electrically connected to high-voltage winding turns of the transformer through a defect simulation component insertion hole penetrating the transformer; a busbar defect component, configured to simulate insulating busbar defects by being electrically connected to the transformer; a sensor, configured to collect local discharge signals of the substation equipment; and a processor, configured to determine equipment defect test results based on the local discharge signals and at least one defect type simulated by at least one of the defect simulation components.

[0005] Another aspect of the present invention provides a method for performing equipment defect testing on substation equipment, characterized in that the method includes: obtaining a local discharge signal obtained by a sensor collecting signals from the substation equipment, wherein the substation equipment includes a transformer, the sensor, a defect simulation component and a processor; and the processor determines the equipment defect test result based on the local discharge signal and the defect type simulated by the defect simulation component, wherein the defect simulation component includes: a discharge defect component, configured to simulate a transformer defect by being electrically connected to the high-voltage winding turns of the transformer through a defect component insertion hole passing through the transformer; and a busbar defect component, configured to simulate an insulating busbar defect by being electrically connected to the transformer.

[0006] Another aspect of the present invention provides a testing system, comprising: a power transformation device, including: a transformer, provided with a defect simulation component insertion hole; a gas switch cabinet; and a device provided according to an embodiment of the present invention.

[0007] Another aspect of the present invention provides an electronic device, comprising:

[0008] one or more processors;

[0009] a memory for storing one or more programs,

[0010] When the one or more programs are executed by the one or more processors, the one or more processors implement the method provided according to the embodiment of the present invention.

[0011] Another aspect of the present invention provides a computer-readable storage medium storing computer-executable instructions, which are used to implement the method provided according to an embodiment of the present invention when executed.

[0012] Another aspect of the present invention provides a computer program product, which includes computer executable instructions. When the instructions are executed, they are used to implement the method provided by the embodiment of the present invention.

[0013] According to an embodiment of the present invention, by combining different defect simulation components to determine the corresponding defect type, and testing the substation equipment according to the device provided by the embodiment of the present invention, the local discharge signal associated with the corresponding defect type can be obtained. In this way, multiple local discharge signals with mapping relationships and corresponding defect types can be associated and stored, so that during the actual operation of the substation equipment, by performing similarity analysis on the acquired operating local discharge signal and the stored local discharge signal, one or more defect types with a mapping relationship with the local discharge signal with the highest similarity are used as the equipment defect type during the actual operation of the substation equipment, thereby realizing real-time detection of defect types of the substation equipment and achieving the technical effect of improving the accuracy and timeliness of defect type detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0015] Figure 1 A diagram showing an application scenario of the device for performing equipment defect testing on power transformation equipment provided by the present invention.

[0016] Figure 2A A schematic diagram of a suspended discharge defect component according to an embodiment of the present invention is shown.

[0017] Figure 2B A schematic diagram showing a bubble discharge defect component according to an embodiment of the present invention.

[0018] Figure 2C A schematic diagram showing a needle plate discharge defect component according to an embodiment of the present invention.

[0019] Figure 2DA schematic diagram of a discharge defect component and a transformer according to an embodiment of the present invention is shown.

[0020] Figure 3A A cross-sectional schematic diagram of a first type of busbar defect component according to an embodiment of the present invention is shown.

[0021] Figure 3B A cross-sectional schematic diagram of a second type of busbar defect component according to an embodiment of the present invention is shown.

[0022] Figure 3C A schematic diagram of a second type of busbar defect component according to an embodiment of the present invention is shown.

[0023] Figure 4 A schematic diagram of a third type of busbar defect component according to an embodiment of the present invention is shown.

[0024] Figure 5 A schematic diagram of a fourth type of busbar defect component according to an embodiment of the present invention is shown.

[0025] Figure 6 A schematic cross-sectional view of a defective component of an outer cone casing according to an embodiment of the present invention is shown.

[0026] Figure 7 A cross-sectional schematic diagram of a defective component of a busbar connecting piece according to an embodiment of the present invention is shown.

[0027] Figure 8 A schematic diagram of a gas switch cabinet provided according to an embodiment of the present invention is shown.

[0028] Fig. 9 A schematic diagram of a transformer provided according to an embodiment of the present invention is shown.

[0029] Fig.10 A block diagram of an electronic device suitable for implementing a method for performing equipment defect testing on a power transformation device according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0030] Below, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of embodiments of the present invention. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of concepts of the present invention.

[0031] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0032] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0033] When using expressions such as "at least one of A, B, and C, etc.", they should generally be interpreted according to the meaning of the expression commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0034] In the embodiments of the present invention, the collection, updating, analysis, processing, use, transmission, provision, disclosure, storage and other aspects of the data involved (for example, including but not limited to user personal information) are in compliance with the provisions of relevant laws and regulations, are used for legitimate purposes, and do not violate public order and good morals. In particular, necessary measures are taken for user personal information to prevent illegal access to user personal information data and maintain the security of user personal information, network security and national security.

[0035] In the embodiment of the present invention, before obtaining or collecting the user's personal information, the user's authorization or consent is obtained.

[0036] The inventors have found that during the operation of the power system, operational failures may occur due to defects in the substation equipment. However, there are many types of defects in the substation equipment, and it is difficult to accurately and timely detect the types of defects in the substation equipment, which makes it difficult to eliminate the defects in the substation equipment in a timely manner, causing a greater negative impact on the stable operation of the power system. The defect types of the substation equipment may include transformer defects such as suspended discharge defects, bubble discharge defects, oil level drop, and increased gas content in the oil generated during the operation of the transformer. The defect types of the substation equipment may also include switch cabinet defects such as insulation rupture of the outer cone bushing and bubbles in the busbar connector generated during the operation of the switch cabinet. The defect types of the substation equipment may also include busbar defects such as busbar body structure defects of the insulated tubular busbar, busbar suspended discharge defects, intermediate joint defects, and poor grounding of the shielding layer.

[0037] The embodiments of the present invention provide an apparatus, method and test system for performing equipment defect testing on substation equipment to relatively quickly and accurately determine the correlation between the equipment defect of the substation equipment and the local discharge signal, so as to determine the equipment defect type of the substation equipment based on the similarity between the local discharge signal and the real-time local discharge signal generated during the actual operation of the power system, so as to improve the accuracy and timeliness of the equipment defect type detection of the substation equipment and improve the operating stability of the substation equipment.

[0038] The apparatus for performing equipment defect testing on power transformation equipment provided by an embodiment of the present invention comprises: at least one of the following defect simulation components: a discharge defect component and a busbar defect component, as well as a sensor and a processor.

[0039] The discharge defect component is configured to be electrically connected to the high-voltage winding turns of the transformer through a defect simulation component insertion hole penetrating the transformer to simulate a transformer defect.

[0040] The busbar defect component is configured to simulate an insulating busbar defect by being electrically connected to the transformer.

[0041] The sensor is configured to collect partial discharge signals of the substation equipment. The partial discharge signals can be represented by any partial discharge signal representation method such as a partial discharge spectrum.

[0042] The processor is configured to determine a device defect test result based on the partial discharge signal and at least one defect type simulated by the at least one defect simulation component.

[0043] According to an embodiment of the present invention, the sensor may be an ultra-high frequency partial discharge sensor (UHF sensor) for detecting partial discharge signals of substation equipment. The sensor may be installed on any device such as a transformer of the substation equipment, a gas switch cabinet, etc., and the embodiment of the present invention does not limit the specific installation position of the sensor.

[0044] According to an embodiment of the present invention, a defect type is associated with a partial discharge signal, and the partial discharge signal may represent one defect type or a combination of multiple defect types. A device defect test result may be associated with one defect type and a partial discharge signal, or a device defect test result may be associated with multiple defect type combinations and associated partial discharge signals.

[0045] According to an embodiment of the present invention, the defect type may include any equipment defect type such as a transformer defect, a bus defect, etc. The embodiment of the present invention does not limit the specific type of the defect type.

[0046] Figure 1 A diagram showing an application scenario of the device for performing equipment defect testing on power transformation equipment provided by the present invention.

[0047] like Figure 1 As shown, the substation equipment A100 may include a transformer A110 and a gas switch cabinet A130. The transformer A110 and the gas switch cabinet A130 may be respectively equipped with two sensors, a first sensor and a second sensor. At least one of the first sensor and the second sensor may be used to collect partial discharge signals of the substation equipment A100.

[0048] The transformer A110 may be provided with a first defect simulation component insertion hole A111 and a second defect simulation component insertion hole A112. The discharge defect component 110 may be inserted into any one of the first defect simulation component insertion hole A111 and the second defect simulation component insertion hole A112 to electrically connect the discharge defect component 110 with the high-voltage winding turns of the transformer A110, thereby simulating a transformer defect. The transformer A110 and the gas switch cabinet A130 may be electrically connected through at least one busbar defect component 120. The busbar defect component 120 may be constructed based on an insulating busbar, and the busbar defect component 120 may simulate an insulating busbar defect by being modified or destroyed.

[0049] The processor can obtain a local discharge signal collected by at least one of the first sensor and the second sensor, and combine the collected local discharge signal with the corresponding one or more defect types to construct a mapping relationship between the local discharge signal and the corresponding one or more defect types, and determine the equipment defect test result based on the mapping relationship.

[0050] By combining different defect simulation components to determine the corresponding defect type, and testing the substation equipment according to the device provided by the embodiment of the present invention, the local discharge signal associated with the corresponding defect type can be obtained. In this way, multiple local discharge signals with mapping relationships and corresponding defect types can be associated and stored, so that during the actual operation of the substation equipment, by performing similarity analysis on the acquired operating local discharge signal and the stored local discharge signal, one or more defect types with a mapping relationship with the local discharge signal with the highest similarity are used as the equipment defect type during the actual operation of the substation equipment, thereby realizing real-time detection of defect types of the substation equipment and improving the accuracy and timeliness of defect type detection.

[0051] It should be understood that the transformer and the switch cabinet can be electrically connected through one or more busbar defect components to simulate multiple insulating busbar absolute limit types. Alternatively, the transformer and the switch cabinet can be electrically connected through a standard insulating busbar, so that the test result is not related to the insulating busbar defect type. According to the device provided by the embodiment of the present invention, one or more equipment defect types corresponding to the equipment defect test result can be determined by setting at least one of the discharge defect component and the busbar defect component.

[0052] According to an embodiment of the present invention, the discharge defect member may include a suspended discharge defect member.

[0053] Figure 2A A schematic diagram of a suspended discharge defect component according to an embodiment of the present invention is shown.

[0054] like Figure 2A As shown, the suspended discharge defect component 111 includes: a first connecting plate 1111, a first electrode rod 1112, a first high-voltage electrode plate 1113, a second connecting plate 1114, a first ground electrode rod 1115, a first ground electrode plate 1116, a suspended electrode 1117 and an electrode connector 1118.

[0055] The first connecting plate 1111 is provided with a first through hole.

[0056] The first electrode rod 1112 passes through the first through hole and is connected to the first connecting plate 1111. The suspended discharge defect component 111 is configured to be electrically connected to the high-voltage winding turn of the transformer through the first end of the first electrode rod 1112. In this way, the suspended discharge defect of the transformer can be simulated.

[0057] The first high-voltage electrode plate 1113 is connected to the second end of the first electrode rod 1112. The first high-voltage electrode plate 1113 and the first electrode rod 1112 may constitute a high-voltage electrode of the suspended discharge defect component 111.

[0058] The second connecting plate 1114 is connected to the first connecting plate 1111 via the first connecting rod 1119. The second connecting plate 1114 and the first connecting plate 1111 may be arranged opposite to each other.

[0059] The first ground electrode rod 1115 passes through the second through hole of the second connecting plate 1114 and is connected to the second connecting plate 1114 .

[0060] The first ground electrode plate 1116 is connected to the first ground electrode rod 1115, and the first ground electrode plate 1116 is arranged opposite to the first high-voltage electrode plate 1113. The first ground electrode plate 1116 and the first ground electrode rod 1115 can constitute a ground electrode of the suspended discharge defect component 111.

[0061] The suspension electrode 1117 is connected to the first ground electrode plate 1116 through the electrode connector 1118, and the suspension electrode 1117 is arranged between the first ground electrode plate 1116 and the first high-voltage electrode plate 1113. The first high-voltage electrode plate 1113, the suspension electrode 1117 and the first ground electrode plate 1116 are arranged in sequence between the first connecting plate 1111 and the second connecting plate 1114. There is a gap between the first high-voltage electrode plate 1113 and the suspension electrode 1117.

[0062] According to an embodiment of the present invention, the electrode connector may be a component made of a flexible material. For example, the electrode connector may be a nylon connector made of a nylon material. However, the present invention is not limited thereto. The electrode connector may also be made of other types of flexible materials. The embodiment of the present invention does not limit the specific material type for making the electrode connector.

[0063] According to an embodiment of the present invention, the length of the electrode connector can be arbitrary. By designing electrode connectors of different lengths, the suspended discharge conditions of the transformer under different operating conditions can be simulated to form local discharge signals corresponding to different electrode connector lengths, thereby improving the richness of equipment test results and improving the accuracy and timeliness of equipment defect detection of substation equipment.

[0064] According to an embodiment of the present invention, the distances between the first high-voltage electrode plate 1113, the suspended electrode 1117 and the first ground electrode plate 1116 can be adjusted to simulate the local discharge amount of the suspended discharge condition of the transformer under different working conditions, so as to form local discharge signals corresponding to different electrode connector lengths, so as to improve the richness of the equipment test results and improve the accuracy and timeliness of equipment defect detection of the substation equipment.

[0065] In one example, the first connecting plate and the second connecting plate of the suspended discharge defect component may be made of a metal material, such as aluminum, iron, or the like.

[0066] In one example, the high voltage electrode and the ground electrode of the suspended discharge defect component have a radius of 50 mm and a thickness of 6 mm.

[0067] According to an embodiment of the present invention, the discharge defect component may further include: a bubble discharge defect component. The bubble discharge defect component is used to simulate the bubble discharge defect of the transformer during operation.

[0068] Figure 2B A schematic diagram showing a bubble discharge defect component according to an embodiment of the present invention.

[0069] like Figure 2B As shown, the bubble discharge defect component 112 includes: a third connecting plate 1121, a third electrode rod 1122, a second high-voltage electrode plate 1123, a second low-voltage electrode plate 1124, a connected N-layer insulating plate 1125, a fourth connecting plate 1126 and a fourth electrode rod 1127.

[0070] The third connecting plate 1121 is provided with a third through hole.

[0071] The third electrode rod 1122 passes through the third through hole and is connected to the third connecting plate 1121. The bubble discharge defect component 112 is configured to be electrically connected to the high voltage winding turn of the transformer through the first end of the third electrode rod 1122.

[0072] The second high-voltage electrode plate 1123 is connected to the second end of the third electrode rod 1122. The second high-voltage electrode plate 1123 and the third electrode rod 1122 constitute a high-voltage electrode of the bubble discharge defect component 112.

[0073] The second low-voltage electrode plate 1124 is disposed opposite to the second high-voltage electrode plate 1123 .

[0074] The connected N-layer insulation plates 1125 are installed between the second high voltage electrode plate 1123 and the second low voltage electrode plate 1124. The middle insulation plate of the connected N-layer insulation plates 1125 has at least one insulation plate through hole 11251, N≥3, and N is an integer. Figure 2B As shown, N may be 3, and three insulating plates 1125 are arranged in sequence, and the insulating plate arranged in the middle may be a middle insulating plate.

[0075] The fourth connecting plate 1126 is connected to the second low-voltage electrode plate 1124 via a fourth electrode rod 1127. The fourth electrode rod 1127 and the second low-voltage electrode plate 1124 constitute a low-voltage electrode of the bubble discharge defect component 112.

[0076] The third connection plate 1121 is connected to the fourth connection plate 1126 via the second connection rod 1128. The second high voltage electrode plate 1123, the connected N-layer insulation plate 1125 and the second low voltage electrode plate 1124 are sequentially arranged between the third connection plate 1121 and the fourth connection plate 1126.

[0077] In one example, the N layers of connected insulating plates may be made based on insulating materials, for example, the insulating plates may be made based on organic glass materials.

[0078] In one example, the intermediate insulating plate has at least one insulating plate through hole 11251 that can contain bubbles, so that the bubble discharge defect component can pass through the bubbles of the connected N layers of insulating plates and the intermediate insulating plate to simulate the bubble discharge defect type that occurs during the operation of the transformer.

[0079] It should be noted that the number of the connected N-layer insulating plates can be any number greater than 3, wherein one or more insulating plates disposed in the middle of the N-layer insulating plates can be determined as intermediate insulating plates. The insulating plate through-holes can be disposed on one or more intermediate insulating plates, and the embodiments of the present invention do not limit the number of intermediate insulating plates and the number of insulating plate through-holes.

[0080] In one example, the fourth electrode rod and the second low-voltage electrode plate constitute the ground electrode of the bubble discharge defect component. The second high-voltage electrode plate and the third electrode rod constitute the high-voltage electrode of the bubble discharge defect component. The radius of the second high-voltage electrode plate and the second low-voltage electrode plate are both 50 mm, and the thickness is 6 mm. The N-layer insulating plate uses three layers of 0.5 mm thick organic glass, and a through hole with a diameter of 0.1 mm is opened in the middle of the middle insulating plate. The three layers of organic glass are bonded together, and the bubbles are fixed at the middle insulating plate through hole of the middle insulating plate.

[0081] According to an embodiment of the present invention, the discharge defect component may further include a pin plate discharge defect component.

[0082] Figure 2C A schematic diagram showing a needle plate discharge defect component according to an embodiment of the present invention.

[0083] like Figure 2C As shown, the needle-plate discharge defect component 113 includes: a fifth connecting plate 1131 , a needle electrode 1132 , a second ground electrode plate 1133 , a sixth connecting plate 1134 and a fifth electrode rod 1135 .

[0084] The fifth connecting plate 1131 is provided with a fifth through hole.

[0085] The needle electrode 1132 is penetrated by a fifth through hole and connected to the fifth connecting plate 1131. The two ends of the needle electrode 1132 are respectively a needle tip 11321 and a needle rod end 11322, and the needle-plate discharge defect component 113 is configured to be electrically connected to the high-voltage winding turns of the transformer through the needle rod end 11322 to simulate the needle-plate discharge defect type that occurs during the operation of the transformer. The needle-plate discharge defect type can be understood as a local discharge defect with a small discharge amount and a relatively stable discharge duration during the operation of the transformer.

[0086] The second ground electrode plate 1133 is disposed opposite to the needle tip 11321 of the needle electrode 1132. A gap may exist between the second ground electrode plate 1133 and the needle tip 11321 of the needle electrode 1132.

[0087] The sixth connection plate 1134 is connected to the second ground electrode plate 1133 through the fifth electrode rod 1135. The sixth connection plate 1134 is provided with a sixth through hole, and the fifth electrode rod 1135 penetrates the sixth through hole and is connected to the second ground electrode plate 1133. The second ground electrode plate 1133 and the fifth electrode rod 1135 can constitute the ground electrode of the pin-plate discharge defect component 113.

[0088] like Figure 2CAs shown, the fifth connecting plate 1131 is connected to the sixth connecting plate 1134 via a bracket, and the needle tip 11321 of the needle electrode 1132 and the second ground electrode plate 1133 are arranged between the fifth connecting plate 1131 and the sixth connecting plate 1134 .

[0089] According to an embodiment of the present invention, the needle electrode 1132 is movably connected to the fifth connecting plate 1131. The sixth connecting plate 1134 is also movably connected to the second ground electrode plate 1133. The needle-plate discharge defect types with different parameters can be simulated by adjusting the positions of the needle electrode 1132 and / or the sixth connecting plate 1134.

[0090] In one example, the needle tip of the needle electrode has a diameter of 0.1 mm, and the needle rod end as a high-voltage electrode has a diameter of 3 mm. The second ground electrode plate 1133 and the fifth electrode rod 1135 serve as ground electrodes of the needle-plate discharge defect component 113. The second ground electrode plate 1133 is a disk with a diameter of 6 cm and a thickness of 5 mm, and the fifth electrode rod 1135 has a diameter of 2 cm. The maximum gap distance between the needle tip and the second ground electrode plate 1133 can be 6 cm, and the needle-plate discharge defect types with different discharge amounts can be simulated by adjusting the position of the needle electrode and / or the second ground electrode plate 1133.

[0091] In one example, an insulating material plate, such as cardboard, may be provided between the second ground electrode plate 1133 and the needle tip of the needle electrode to enable the transformer to perform a small amount of discharge stably for a long time. For example, the discharge amount may be about 100 pC.

[0092] Figure 2D A schematic diagram of a discharge defect component and a transformer according to an embodiment of the present invention is shown.

[0093] like Figure 2D As shown, the discharge defect component 110 can be put into the defect simulation component insertion hole A111_1 of the transformer A110, and the high-voltage electrode end of the discharge defect component 110 can be electrically connected to the high-voltage winding turn A121 of the transformer A110. The discharge defect component 110 can be any one of a suspended discharge defect component, a bubble discharge defect component, or a pin-plate discharge defect component.

[0094] like Figure 2D As shown, the opening position of the defect simulation component input hole A111_1 can be higher than the oil pillow A113 of the transformer A110 to avoid transformer oil overflow when replacing the discharge defective component.

[0095] In one example, four symmetrical electrodes are set on the high-voltage winding turns of the transformer, and a defect simulation component insertion hole can be set at the position corresponding to each electrode, so that different discharge defect components can be electrically connected to the electrodes of the high-voltage winding turns through the four defect simulation component insertion holes, respectively, and then the local discharge signal can be obtained by simulating the transformer operating under different combinations of transformer equipment defect types.

[0096] According to an embodiment of the present invention, the busbar defect component includes a first type of busbar defect component for simulating busbar body defects. The first type of busbar defect component includes an insulation defect through hole. The insulation defect through hole penetrates the shielding layer and the insulation layer of the first type of busbar defect component.

[0097] According to an embodiment of the present invention, the first type of busbar defect component can be obtained by modifying the busbar body of a standard insulated busbar. The busbar body can include a conductor and a shielding layer wrapped around the conductor, an insulating layer and an outer protective layer. The insulation defect through hole can be a shielding layer and an insulating layer that penetrate the busbar body, and the outer protective layer can close the insulation defect through hole.

[0098] Figure 3A A cross-sectional schematic diagram of a first type of busbar defect component according to an embodiment of the present invention is shown.

[0099] like Figure 3A As shown, the busbar defect component may include a first type busbar defect component 121 for simulating busbar body defects, and the first type busbar defect component 121 includes an insulation defect through hole 1211. The insulation defect through hole 1211 penetrates the conductor shielding layer, the insulation layer, the metal shielding layer and the insulation shielding layer of the busbar body of the first type busbar defect component 121. The outer protective layer of the busbar body closes the insulation defect through hole 1211.

[0100] According to an embodiment of the present invention, the busbar defect component may further include a second type of busbar defect component for simulating a busbar suspended discharge defect. The second type of busbar defect component includes a conductive needle. The conductive needle is arranged on an insulating layer of the second type of busbar defect component, and the insulating layer is spaced apart from a shielding layer of the second type of busbar defect component.

[0101] Figure 3B A cross-sectional schematic diagram of a second type of busbar defect component according to an embodiment of the present invention is shown.

[0102] Figure 3C A schematic diagram of a second type of busbar defect component according to an embodiment of the present invention is shown.

[0103] Combination Figure 3B and Figure 3CAs shown, the three insulating layers of the second type busbar defect component 122 are spaced apart from the three metal shielding layers. The second type busbar defect component 122 includes three conductive pin through holes arranged in three insulating layers, namely, the first conductive pin through hole X1221, the second conductive pin through hole X1222 and the third conductive pin through hole X1223. The conductive pin 1221 can be arranged in any one or more conductive pin through holes of the first conductive pin through hole X1221, the second conductive pin through hole X1222 and the third conductive pin through hole X1223.

[0104] According to an embodiment of the present invention, the second type of busbar defect component is used to simulate the busbar suspended discharge defect, and a conductive needle is embedded between the conductor of the busbar body and the metal shielding layer to form suspended discharge during operation of the substation equipment.

[0105] In one example, a small hole with a diameter of 15 mm can be drilled on the busbar body with a drill bit, deeply penetrating the metal shielding layer without touching the conductor, and a conductive needle is used to embed the insulating layer to ensure that the metal conductor and the metal shielding layer do not touch each other, and finally the outer protective layer of the conductive through hole is encapsulated.

[0106] According to an embodiment of the present invention, the busbar defect component may further include at least one of a third type busbar defect component and a fourth type busbar defect component.

[0107] According to an embodiment of the present invention, a third type busbar defective component includes: a third type busbar body and a control conductor.

[0108] The control wire is connected to the insulation layer of the joint of the third type bus body. The control wire is configured to control the third type bus defect component to simulate the bus grounding defect by connecting or disconnecting with the grounding device.

[0109] Figure 4 A schematic diagram of a third type of busbar defect component according to an embodiment of the present invention is shown.

[0110] like Figure 4 As shown, the third type busbar defect component 123 includes a third type busbar body 1231 and a control wire 1232. The joint section of the third type busbar body 1231 can include a conductor layer, an insulating layer, a shielding layer and an outer protective layer from the inside to the outside. The control wire 1232 is connected to the insulating layer of the joint of the third type busbar body, and the control wire 1232 is electrically connected to the grounding device B110. The control wire 1232 is configured to realize whether the insulating layer is grounded by connecting or disconnecting with the grounding device B110, so as to control the third type busbar defect component 123 to simulate the poor grounding defect of the shielding layer of the busbar.

[0111] In one example, the third type of busbar defective component can be formed by splicing the middle joints of two insulated tubular busbars, each with a length of 1500 mm. A control wire is led out of the insulation layer at the middle joint of the insulated tubular busbar, and the grounding device is used to control whether the shielding layer is grounded.

[0112] According to an embodiment of the present invention, the fourth type of busbar defect component includes a busbar connection component. The busbar connection component is configured to connect different busbar bodies, and a conductive liquid is disposed on the surface of the busbar connection component. The surface of the busbar connection component may be provided with a liquid film, and the conductive liquid may be present on the surface of the busbar connection component by spraying liquid on the busbar connection component or placing the busbar connection component in a humid environment.

[0113] Figure 5 A schematic diagram of a fourth type of busbar defect component according to an embodiment of the present invention is shown.

[0114] like Figure 5 As shown, the fourth type of busbar defect component 124 includes a busbar connecting component 1241. The busbar connecting component 1241 connects two insulated busbars, namely the first insulated busbar B121 and the second insulated busbar B122, to form a complete busbar passage. The inner surface or outer surface of the busbar connecting component 1241 can be provided with a water film to simulate the moisture defect of the busbar intermediate joint.

[0115] In one example, the busbar joint can be placed in a high humidity environment for a period of time to form a uniform water film on the surface to simulate moisture in the joint, and then the busbar connecting component can be used to insulate the joint externally to form a fourth type of busbar defective component.

[0116] According to an embodiment of the present invention, the busbar defect component can be used as an insulating busbar to electrically connect the transformer and the switchgear to simulate local discharge defects caused by busbar body defect types, busbar suspended discharge defect types, poor shielding layer grounding defects or busbar connecting component moisture defect types that occur during the operation of the substation equipment.

[0117] According to an embodiment of the present invention, the power transformation equipment further comprises a gas switch cabinet. The defect simulation component may further comprise at least one of an outer cone bushing defect component and a busbar connector defect component for simulating the defect type of the gas switch cabinet.

[0118] According to an embodiment of the present invention, the outer cone bushing defective component is arranged in a gas switch cabinet (or gas-filled cabinet), and the insulation layer of the outer cone bushing defective component has a damage defect. The outer cone bushing defective component can be installed in other switch cabinets as the outer cone bushing of the gas switch cabinet.

[0119] Figure 6 A cross-sectional schematic diagram of a defective component of an outer cone casing according to an embodiment of the present invention is shown.

[0120] like Figure 6 As shown, the insulation layer area Z131 of the outer cone bushing defect component 131 can be used as a cracking and damage defect. The outer cone bushing defect component 131 can be installed in a gas switch cabinet as an outer cone bushing.

[0121] According to an embodiment of the present invention, the damage defect size of the insulation layer of the outer cone bushing defect component has a great influence on the insulation performance of the substation during operation. The partial discharge defect of the substation under different working conditions can be simulated by designing the damage defect size of the insulation layer.

[0122] In one example, the crack length of the damage defect of the insulating layer of the defective component of the outer cone bushing can be about 20 mm. The crack length of 20 mm can form obvious electric field distortion in the electric field. This length is sufficient to simulate the cracks that may appear in the substation equipment in the real environment, and can reflect the performance of the insulating material when subjected to stress concentration.

[0123] In one example, the crack width of the insulation layer of the outer cone casing defect component can be 5 mm. A crack with a width of 5 mm can ensure that there is a sufficient difference in the electric field strength on the crack surface and inside the crack, and thus the effect of the crack on the electric field distribution can be tested. Cracks that are too wide or too narrow cannot effectively simulate the actual situation. A width of 5 mm is the optimal choice after multiple experiments.

[0124] In one example, the crack depth of the damage defect of the insulation layer of the outer cone bushing defect component can be 5 mm. A crack with a depth of 5 mm can penetrate deep into the insulation material but will not completely penetrate the material. This depth design can accurately reflect the impact of the crack depth on the insulation performance, especially the performance when partial discharge and other insulation faults occur.

[0125] According to an embodiment of the present invention, the damage defect size of the insulating layer of the defective component of the outer cone casing may include crack length, crack width, and crack depth. The mutual influence between the crack length, crack width, and crack depth is also a key factor affecting the electrical performance of the substation equipment due to equipment defects, for example, it can affect the electric field distribution of the substation equipment and the breakdown voltage of the insulating material. If the crack width and crack depth do not increase accordingly, the insulation strength may not be significantly affected. While keeping the crack length unchanged, the crack width and crack depth can be increased to simulate a more drastic change in the local electric field strength, thereby inducing partial discharge of the substation equipment. By setting the crack size of the insulating layer of the defective component of the outer cone casing, the insulation limit that may occur in the substation equipment under actual working conditions can be more accurately simulated. Therefore, the partial discharge signal obtained by the sensor can be used to determine the partial discharge signal of the substation equipment under the conditions of different crack sizes of the insulation layer.

[0126] According to an embodiment of the present invention, the busbar feed-through defect component comprises: a conductive inner core and an epoxy shielding cover, the epoxy shielding cover is wrapped around the outer side of the conductive inner core, and at least one bubble hole is arranged in the epoxy shielding cover. The busbar feed-through defect component can be used as a busbar connector (or busbar interface) of a gas switch cabinet to electrically connect the busbar or the busbar defect component to the gas switch cabinet.

[0127] Figure 7 A cross-sectional schematic diagram of a defective component of a busbar connecting piece according to an embodiment of the present invention is shown.

[0128] like Figure 7 As shown, the busbar connector defect component 132 includes: a conductive inner core 1321 and an epoxy shielding cover 1322. The epoxy shielding cover 1322 is wrapped around the outside of the conductive inner core 1321. The busbar connector defect component 132 is configured to be connected to the gas switch cabinet as a busbar interface. The epoxy shielding cover 1322 includes an epoxy resin layer 13221 and a silicone rubber layer 13222, and the bubble hole 1323 is arranged at the interface between the epoxy resin layer 13221 and the silicone rubber layer 13222 to form an interface bubble.

[0129] In one example, a high-precision injection device can be used to make a bubble defect at the contact interface between the epoxy resin layer and the silicone rubber layer of the busbar connector to form a bubble hole 1323. Then, the epoxy shielding cover of the busbar connector is encapsulated to obtain a busbar connector defective component that can be freely disassembled. At the same time, an intact busbar connector can be provided to replace the busbar connector defective component.

[0130] Figure 8 A schematic diagram of a gas switch cabinet provided according to an embodiment of the present invention is shown.

[0131] like Figure 8 As shown, the first view A130_1 is a front perspective view of the gas switch cabinet, and the second view A130_2 is a side view of the gas switch cabinet. The outer cone bushing A131_1 is arranged at the lower side of the inside of the gas switch cabinet, and the busbar connector A132_1 can be electrically connected to the A, B, and C three-phase windings of the transformer respectively. The operating mechanism A133_1 of the gas switch cabinet is arranged in the middle of the gas switch cabinet. The isolating switch A134_1 and the circuit breaker A135_1 are respectively arranged on the gas switch cabinet.

[0132] In one example, a busbar defect component is prepared based on an insulated tubular busbar. The insulated tubular busbar is produced by an extrusion process, with a 1-minute power frequency withstand voltage of not less than 95 kV, an impedance of less than 0.15 megohms per meter, and a total length of 6 m. The insulated tubular busbar is divided into an A-phase insulated tubular busbar, a B-phase insulated tubular busbar, and a C-phase insulated tubular busbar. The insulated tubular busbar includes an insulated tubular busbar body, a female insulated tubular line intermediate joint, an insulated tubular busbar terminal head, and an insulated tubular busbar bracket. Among them, the busbar defect components are respectively a first type of busbar defect component for simulating the defect type of the insulated tubular busbar body, a third type of busbar defect component for simulating the defect type of poor grounding of the shielding layer, a second type of busbar defect component for simulating the busbar suspended discharge defect, and a fourth type of busbar defect component for simulating the intermediate joint moisture defect.

[0133] The insulated tubular busbar body comprises a tubular conductor, a conductor shielding layer, an insulating layer, an insulating shielding layer, a metal shielding layer and an outer protective layer.

[0134] The total length of the A-phase insulated tubular busbar is 1000 mm. A round hole with a diameter of 15 mm is drilled at the tubular insulated busbar as an insulation defect. The depth is such that the conductor layer is penetrated. The outer layer of the busbar is then encapsulated as the first type of busbar defect component simulating the defects of the insulated tubular busbar itself.

[0135] The total length of the B-phase insulated tubular busbar is 3000mm, which is composed of two 1500mm insulated tubular busbars spliced ​​through the busbar shielding barrel and the busbar intermediate joint. A wire is led out from the insulation layer at the intermediate joint, and the shielding layer is grounded through the grounding device, which is used as the third type of busbar defect component for simulating the defect type of poor grounding of the shielding layer.

[0136] The total length of the C-phase insulated tubular busbar is 2000mm, which is composed of two 1000mm insulated tubular busbars spliced ​​through busbar shielding barrels and busbar intermediate joints. The C-phase insulated tubular busbar includes the second type of busbar defect components used to simulate busbar suspension discharge defects and the fourth type of busbar defect components used to simulate intermediate joint moisture defects.

[0137] The second type of busbar defective component is that a conductive needle is embedded between the metal conductive layer and the outer metal shielding layer to form a suspended discharge. A drill is used to drill a small hole with a diameter of 15 mm on the busbar, deeply penetrating the metal shielding layer without touching the metal conductor. A conductive needle is embedded in the insulating layer to ensure that the metal conductor and the metal shielding layer do not touch each other, and finally packaged.

[0138] When making the intermediate joint of the fourth type of busbar defective components, the joint is placed in a certain high humidity environment for a period of time to form a uniform water film on the surface to simulate the joint being damp, and then the joint is externally insulated and packaged. The A-phase insulated tubular busbar, the B-phase insulated tubular busbar and the C-phase insulated tubular busbar are electrically connected to the A, B and C three-phase high-voltage bushings or low-voltage bushings of the transformer respectively.

[0139] In one example, the transformer may be a 35Kv transformer, and the transformer may be a three-phase transformer having A, B, and C phase windings.

[0140] Fig. 9 A schematic diagram of a transformer provided according to an embodiment of the present invention is shown.

[0141] like Fig. 9 As shown, the first transformer view A110_1 is a top view of the gas switch cabinet, the second transformer view A110_2 is a front view of the transformer, and the third transformer view A110_3 is a side view of the transformer. The transformer includes an oil tank A112_1, an oil pillow A113, a high-voltage bushing A115_1, a low-voltage bushing A114_1, a defect simulation component insertion hole A111_1, a dielectric window A117_1, and an observation window A116_1.

[0142] In one example, the transformer is an oil-immersed, naturally air-cooled 35kV transformer. The oil tank is welded with high-strength steel plates and can withstand mechanical strength tests of vacuum residual pressure of 133Pa and positive pressure of 98kPa. The oil tank is 1212mm long, 762mm wide, 1000mm high, and the thickness of the oil tank wall is 8mm. Each side of the oil tank is chamfered at 45 degrees and sanded from 60 mesh to 240 mesh with sandpaper. The oil pillow is located above the top cover of the transformer and is connected to the main body of the transformer. The radius of the oil pillow is 50mm, the height is 600mm, and the highest point of the vertical height of the oil pillow is 300mm from the top of the transformer body.

[0143] The high-voltage bushing is located above the top cover of the transformer body. It is a pure porcelain bushing with a height of 200mm and a distance of 570mm between the bushing axes. The low-voltage bushing is located above the top cover of the transformer body. It is a pure porcelain bushing with a distance of 570mm between the bushing axes. The distance between the low-voltage bushing and the corresponding high-voltage bushing axes is 220mm.

[0144] The defect simulation component insertion hole is located above the top cover of the transformer body, with a radius of 50mm. The axes of the two defect simulation component insertion holes are 800mm apart. The height of the columnar defect simulation component insertion hole is 350mm, which is 50mm higher than the height of the oil pillow. The defect insertion rod is a steel cylindrical rod with a radius of 20mm and a length of 600mm. It has a thread on the top that can be connected to the discharge defect component. There is a freely movable steel sealing flange at the waist of the defect insertion rod, which can be connected to the defect simulation component insertion hole.

[0145] Two dielectric windows are arranged on the front and back sides of the transformer oil tank, and they are arranged crosswise. A circular hole is opened in the wall of the transformer oil tank to install a flange window. The center of the upper circle is 250mm from the top of the oil tank and 250mm from the side wall. The center of the lower circle is 250mm from the bottom of the oil tank and 250mm from the side wall. A transparent epoxy resin plate is installed on it as a sealing material to seal the transformer oil. The radius of the circular hole of the dielectric window is 100mm, the radius of the flange window is 140mm, and the height is 50mm. An epoxy resin plate with a radius of 120mm is installed on the surface of the flange window of the dielectric window, and a UHF sensor (ultra-high frequency partial discharge sensor) can be installed on its outside.

[0146] An observation window is arranged on each side of the transformer oil tank. A circular hole is opened on the wall of the transformer oil tank to install a flange window. The center of the circle is 250mm from the top of the oil tank and 250mm from the side wall. A transparent epoxy resin plate is installed on the observation window as a sealing material to seal the transformer oil. The radius of the circular hole is 100mm, and the radius of the flange window is 140mm. The transformer winding maintains a typical transformer structure, with two parallel steel bars welded on the top. The steel bars are 50mm wide and 1000mm long. The overall structure is parallel to the two defect input holes.

[0147] According to an embodiment of the present invention, according to the device for testing equipment defects of substation equipment provided in the above embodiment, multiple types of defect simulation components can be combined to simulate the mapping relationship between multiple equipment defect types of substation equipment and partial discharge signals. And the mapping relationship between the partial discharge signal and the multiple equipment defect types can be used to determine the partial discharge situation of the substation equipment under different types of multiple equipment defect conditions, so as to determine the interaction between the defects of multiple devices of the substation equipment, realize accurate identification of multiple equipment defects, and avoid the difficulty of predicting the impact of defects on other equipment devices by defect simulation of a single device. In this way, the behavior and response of the power system in the face of actual operating conditions and extreme situations of substation equipment can be effectively analyzed. This analysis helps to identify weak links and potential risks in the power system, so as to take measures to improve them, optimize the setting parameter adjustment of the protection device, improve the protection logic, and improve the reliability of the power system.

[0148] An embodiment of the present invention also provides a method for performing equipment defect testing on substation equipment, the method comprising: obtaining a local discharge signal obtained by a sensor collecting signals from the substation equipment, wherein the substation equipment comprises a transformer, a sensor, at least one defect simulation component and a processor; and the processor determines the equipment defect test result based on the local discharge signal and at least one defect type simulated by at least one defect simulation component.

[0149] According to an embodiment of the present invention, the defect simulation component includes at least one of the following: a discharge defect component, configured to simulate a transformer defect by being electrically connected to the high-voltage winding turns of the transformer through a defect component insertion hole passing through the transformer; and a busbar defect component, configured to simulate an insulating busbar defect by being electrically connected to the transformer.

[0150] It should be noted that the method for testing equipment defects of a substation provided by the embodiment of the present invention can be executed by a processor in the apparatus for testing equipment defects of a substation provided by the embodiment of the present invention to obtain a test result. The embodiment of the present invention will not be described in detail here.

[0151] An embodiment of the present invention further provides a test system, which includes: a power transformation device and an apparatus for performing a device defect test on the power transformation device provided by an embodiment of the present invention.

[0152] Transformer equipment includes: transformer and gas switch cabinet. Transformer is equipped with defect simulation component insertion hole.

[0153] According to an embodiment of the present invention, a transformer and a gas switch cabinet can be assembled according to the device for performing equipment defect testing on a power transformation device provided by an embodiment of the present invention to achieve electrical connection between the transformer and the gas switch cabinet. A defect simulation component can be installed in at least one of the transformer and the gas switch cabinet to simulate one or more equipment defect types.

[0154] It should be understood that the test system provided by the embodiment of the present invention can be based on Figure 1 The present invention is explained with reference to the application scenario shown in the figure, and the embodiments of the present invention are not described in detail here.

[0155] Fig.10 A block diagram of an electronic device suitable for implementing a method for performing equipment defect testing on a power transformation device according to an embodiment of the present invention is shown. Fig.10 The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0156] like Fig.10As shown, the electronic device 1000 according to an embodiment of the present invention includes a processor 1001, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage part 1008 into a random access memory (RAM) 1003. The processor 1001 may include, for example, a general-purpose microprocessor (e.g., a CPU), an instruction set processor and / or a related chipset and / or a special-purpose microprocessor (e.g., an application-specific integrated circuit (ASIC)), etc. The processor 1001 may also include an onboard memory for caching purposes. The processor 1001 may include a single processing unit or multiple processing units for performing different actions of the method flow according to an embodiment of the present invention.

[0157] In the random access memory (RAM) 1003, various programs and data required for the operation of the electronic device 1000 are stored. The processor 1001, the read-only memory (ROM) 1002 and the random access memory (RAM) 1003 are connected to each other through the bus 1004. The processor 1001 performs various operations of the method flow according to the embodiment of the present invention by executing the program in the read-only memory (ROM) 1002 and / or the random access memory (RAM) 1003. It should be noted that the program can also be stored in one or more memories other than the read-only memory (ROM) 1002 and the random access memory (RAM) 1003. The processor 1001 can also perform various operations of the method flow according to the embodiment of the present invention by executing the program stored in the one or more memories.

[0158] According to an embodiment of the present invention, the electronic device 1000 may further include an input / output (I / O) interface 1005, which is also connected to the bus 1004. The electronic device 1000 may further include one or more of the following components connected to the input / output (I / O) interface 1005: an input portion 1006 including a keyboard, a mouse, etc.; an output portion 1007 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage portion 1008 including a hard disk, etc.; and a communication portion 1009 including a network interface card such as a LAN card, a modem, etc. The communication portion 1009 performs communication processing via a network such as the Internet. A drive 1010 is also connected to the input / output (I / O) interface 1005 as needed. A removable medium 1011, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 1010 as needed, so that a computer program read therefrom is installed into the storage portion 1008 as needed.

[0159] According to an embodiment of the present invention, the method flow according to an embodiment of the present invention can be implemented as a computer software program. For example, an embodiment of the present invention includes a computer program product, which includes a computer program carried on a computer-readable storage medium, and the computer program contains a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 1009, and / or installed from the removable medium 1011. When the computer program is executed by the processor 1001, the above-mentioned functions defined in the system of the embodiment of the present invention are executed. According to an embodiment of the present invention, the system, equipment, device, module, unit, etc. described above can be implemented by a computer program module.

[0160] The present invention also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiment; or may exist independently without being assembled into the device / apparatus / system. The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed, the method according to the embodiment of the present invention is implemented.

[0161] According to an embodiment of the present invention, the computer-readable storage medium may be a non-volatile computer-readable storage medium. For example, it may include but is not limited to: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present invention, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, an apparatus or a device.

[0162] For example, according to an embodiment of the present invention, the computer-readable storage medium may include the read-only memory (ROM) 1002 and / or the random access memory (RAM) 1003 described above and / or one or more memories other than the read-only memory (ROM) 1002 and the random access memory (RAM) 1003 .

[0163] An embodiment of the present invention also includes a computer program product, which includes a computer program, which contains program code for executing the method provided by the embodiment of the present invention. When the computer program product runs on an electronic device, the program code is used to enable the electronic device to implement the method for performing equipment defect testing on substation equipment provided by the embodiment of the present invention.

[0164] When the computer program is executed by the processor 1001, the above functions defined in the system / device of the embodiment of the present invention are executed. According to the embodiment of the present invention, the system, device, module, unit, etc. described above can be implemented by a computer program module.

[0165] In one embodiment, the computer program may rely on tangible storage media such as optical storage devices, magnetic storage devices, etc. In another embodiment, the computer program may also be transmitted and distributed in the form of signals on a network medium, and downloaded and installed through the communication part 1009, and / or installed from the removable medium 1011. The program code contained in the computer program may be transmitted using any appropriate network medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0166] According to an embodiment of the present invention, the program code for executing the computer program provided by the embodiment of the present invention can be written in any combination of one or more programming languages. Specifically, these computing programs can be implemented using high-level process and / or object-oriented programming languages, and / or assembly / machine languages. Programming languages ​​include, but are not limited to, Java, C++, python, "C" language or similar programming languages. The program code can be executed entirely on the user computing device, partially on the user device, partially on the remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device can be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (e.g., using an Internet service provider to connect through the Internet).

[0167] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present invention. In this regard, each box in the flowchart or block diagram may represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box may also occur in an order different from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions. It can be understood by those skilled in the art that the features recorded in the various embodiments of the present invention can be combined and / or combined in various ways, even if such a combination or combination is not explicitly recorded in the present invention. In particular, without departing from the spirit and teachings of the present invention, the features recorded in the various embodiments of the present invention can be combined and / or combined in various ways. All such combinations and / or combinations fall within the scope of the present invention.

[0168] The embodiments of the present invention are described above. However, these embodiments are only for the purpose of illustration, and are not intended to limit the scope of the present invention. Although each embodiment is described above, it does not mean that the measures in each embodiment cannot be used in combination advantageously. Without departing from the scope of the present invention, those skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present invention.

Claims

1. A device for testing equipment defects of power substation equipment, characterized in that: The power transformation equipment includes a transformer, and the device includes: The following defect simulation components: A discharge defect component (110) is configured to be electrically connected to a high-voltage winding turn of the transformer through a defect simulation component insertion hole penetrating the transformer, so as to simulate a transformer defect; A busbar defect component (120) configured to simulate an insulating busbar defect by being electrically connected to the transformer; A sensor configured to collect a partial discharge signal of the power transformation equipment; and a processor configured to determine a device defect test result based on the partial discharge signal and at least one defect type simulated by at least one of the defect simulation components; Wherein, the power transformation equipment further includes a gas switch cabinet, and the defect simulation component further includes at least one of the following: An outer cone casing defect component (131) is arranged in the gas switch cabinet, and an insulation layer of the outer cone casing defect component has a damage defect; Defective components of busbar connectors (132), including: Conductive inner core (1321); An epoxy shielding cover (1322) is wrapped around the outside of the conductive inner core, wherein at least one bubble hole (1323) is provided in the epoxy shielding cover, wherein the busbar connector defect component (132) is configured to be connected to the gas switch cabinet as a busbar interface.

2. The device according to claim 1, characterized in that The discharge defect component (110) comprises: Suspended discharge defect component (111), comprising: A first connecting plate (1111) provided with a first through hole; a first electrode rod (1112) passing through the first through hole and connected to the first connection plate (1111), wherein the suspended discharge defect component is configured to be electrically connected to a high-voltage winding turn of the transformer through a first end of the first electrode rod (1112); A first high-voltage electrode plate (1113) connected to the second end of the first electrode rod (1112); A second connecting plate (1114) is connected to the first connecting plate (1111) via a connecting rod. A first ground electrode rod (1115) passes through a second through hole of the second connecting plate (1114) and is connected to the second connecting plate (1114); A first ground electrode plate (1116) connected to the first ground electrode rod (1115), the first ground electrode plate (1116) being arranged opposite to the first high-voltage electrode plate (1113); A suspension electrode (1117) is connected to the first ground electrode plate (1116) via an electrode connector (1118); the suspension electrode (1117) is arranged between the first ground electrode plate (1116) and the first high-voltage electrode plate (1113); the first high-voltage electrode plate (1113), the suspension electrode (1117) and the first ground electrode plate (1116) are arranged in sequence between the first connecting plate (1111) and the second connecting plate (1114).

3. The device according to claim 1, characterized in that The discharge defect component (110) comprises: A bubble discharge defect component (112) comprising: A third connecting plate (1121) is provided with a third through hole; A third electrode rod (1122) passes through the third through hole and is connected to the third connection plate (1121), wherein the bubble discharge defect component (112) is configured to be electrically connected to a high-voltage winding turn of the transformer through a first end of the third electrode rod (1122); A second high-voltage electrode plate (1123) connected to the second end of the third electrode rod (1122); A second low-voltage electrode plate (1124) is arranged opposite to the second high-voltage electrode plate (1123); N layers of connected insulating plates (1125) are installed between the second high-voltage electrode plate (1123) and the second low-voltage electrode plate (1124), wherein the middle insulating plate of the N layers of connected insulating plates (1125) has at least one insulating plate through hole (11251), N≥3, and N is an integer; The fourth connecting plate (1126) is connected to the second low-voltage electrode plate (1124) via a fourth electrode rod (1127), wherein the third connecting plate (1121) is connected to the fourth connecting plate (1126), and the second high-voltage electrode plate (1123), the connected N-layer insulating plate (1125) and the second low-voltage electrode plate (1124) are sequentially arranged between the third connecting plate (1121) and the fourth connecting plate (1126).

4. The device according to claim 1, characterized in that The discharge defect component (110) comprises: Needle plate discharge defective component (113), including: A fifth connecting plate (1131) is provided with a fifth through hole; a needle electrode (1132) passing through the fifth through hole and connected to the fifth connecting plate (1131), wherein two ends of the needle electrode (1132) are respectively a needle tip (11321) and a needle rod end (11322), and the needle-plate discharge defect component (113) is configured to be electrically connected to a high-voltage winding turn of the transformer via the needle rod end (11322); The second ground electrode plate (1133) is arranged opposite to the needle tip (11321) of the needle electrode (1132). a sixth connecting plate (1134), connected to the second ground electrode plate (1133) via a fifth electrode rod (1135), wherein the sixth connecting plate (1134) is provided with a sixth through hole, and the fifth electrode rod (1135) penetrates the sixth through hole to be connected to the second ground electrode plate (1133); The fifth connecting plate (1131) is connected to the sixth connecting plate (1134), and the needle tip (11321) of the needle electrode (1132) and the second ground electrode plate (1133) are arranged between the fifth connecting plate (1131) and the sixth connecting plate (1134).

5. The device according to claim 1, characterized in that The busbar defect component (120) comprises a first type of busbar defect component for simulating busbar body defects, wherein the first type of busbar defect component (121) comprises: The insulation defect through hole (1211) penetrates the shielding layer and the insulation layer of the first-type busbar defect component.

6. The device according to claim 1, characterized in that The busbar defect component (120) comprises a second type of busbar defect component (122) for simulating a busbar suspended discharge defect, wherein the second type of busbar defect component (122) comprises: The conductive needle (1221) is arranged on the insulating layer of the second-type busbar defect component, and the insulating layer and the shielding layer of the second-type busbar defect component are arranged at intervals.

7. The device according to any one of claims 1, 5 or 6, characterized in that The busbar defective component includes at least one of the following: The third type of busbar defective components (123) include: The third type of busbar body (1231), A control conductor (1232) is connected to the insulation layer of the joint of the third type busbar body, and the control conductor is configured to control the third type busbar defect component to simulate a poor busbar grounding defect by connecting or disconnecting with a grounding device; The fourth type of busbar defective components (124) includes: The busbar connecting component (1241) is configured to connect different busbar bodies, and a conductive liquid is disposed on the surface of the busbar connecting component.

8. A method for testing equipment defects on power substation equipment, characterized in that: The method comprises: Acquiring a partial discharge signal obtained by a sensor collecting signals from a transformer, wherein the transformer includes a transformer, the sensor, a defect simulation component, and a processor; and The processor determines a device defect test result based on the partial discharge signal and the defect type simulated by the defect simulation component, wherein the defect simulation component includes: A discharge defect component (110) is configured to be electrically connected to a high-voltage winding turn of the transformer through a defect component insertion hole penetrating the transformer, so as to simulate a transformer defect; A busbar defect component (120) configured to simulate an insulating busbar defect by being electrically connected to the transformer; Wherein, the power transformation equipment further includes a gas switch cabinet, and the defect simulation component further includes at least one of the following: An outer cone casing defect component (131) is arranged in the gas switch cabinet, and an insulation layer of the outer cone casing defect component has a damage defect; Defective components of busbar connectors (132), including: Conductive inner core (1321); An epoxy shielding cover (1322) is wrapped around the outside of the conductive inner core, wherein at least one bubble hole (1323) is provided in the epoxy shielding cover, wherein the busbar connector defect component (132) is configured to be connected to the gas switch cabinet as a busbar interface.

9. A testing system, characterized in that: include: Transformation equipment, including: For transformers, set a hole for dropping defective simulation components; Gas switchgear; and An apparatus for performing equipment defect testing on power transformation equipment as claimed in any one of claims 1 to 7.

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