Device and method for on-line monitoring of partial discharge

Abstract

The invention relates to a device and method for on-line monitoring of partial discharge, and belongs to the technical field of electric power, the device for on-line monitoring of partial discharge comprises discharge detection devices and an auxiliary on-line strengthening mechanism, each discharge detection device is located in the auxiliary on-line strengthening mechanism and is electrically connected with the auxiliary on-line strengthening mechanism, and the auxiliary on-line strengthening mechanism is electrically connected with the discharge detection devices. The auxiliary online strengthening mechanism comprises a bearing rack, a guide sliding rail, a hard insulation cushion block, an insulation partition plate, a binding post, a wiring terminal, an optical fiber communication device and a driving circuit. The board face of the insulation partition plate divides the bearing rack into a control cavity, a communication cavity and at least one detection cavity from front to back in the axis direction of the bearing rack. The equipment structure is flexible and convenient to adjust, the equipment structure can be flexibly adjusted according to use requirements, so that the requirements of different use environments and circuit system monitoring operation are effectively met, and meanwhile, in the operation process, damage to the discharge monitoring device caused by external force impact, dust, liquid and other pollutants can be effectively reduced.

Description

Technical Field

[0001] The invention relates to a device and a method for online monitoring of partial discharge, belonging to the technical field of electric power. Background Art

[0002] In order to improve the stability of power transmission lines, power control systems and power traction circuits, it is often necessary to monitor the partial discharge phenomenon in the power lines, so as to timely discover the location of circuit system fault hazards and the degree of partial discharge for continuous monitoring. To address this problem, a variety of partial discharge online monitoring systems have been developed, such as the "partial discharge online monitoring device" with patent application number "202221105170.2". Although it can meet the needs of partial discharge monitoring operations in power systems, the equipment structure is fixed. On the one hand, the current partial discharge monitoring device is easily restricted by the use environment and circuit system structure when in use, which seriously affects the flexibility and versatility of the equipment. On the other hand, the current partial discharge online monitoring device often lacks effective protection capabilities during operation, so it is very easy to be contaminated by media such as dust and droplets in the external environment, or due to external force impact and other factors, which directly causes the partial discharge online monitoring device to be mechanically damaged. In addition, the current partial discharge online monitoring device often lacks effective grounding protection capabilities during operation, so it is easy to cause the surface of the partial discharge online monitoring device to have a higher voltage due to factors such as equipment leakage, induced electricity, and creepage, resulting in a greater contact risk for the equipment. Summary of the invention

[0003] The purpose of the present invention is to provide a device and a monitoring method for online monitoring of partial discharge. Compared with the current traditional discharge monitoring device, the device structure of the invention is flexible and convenient to adjust. The device structure can be flexibly adjusted according to the needs of use, so as to effectively meet the needs of different use environments and circuit system monitoring operations. At the same time, during operation, it can effectively reduce the damage to the discharge monitoring device caused by external force impact, dust, liquid and other pollutants. At the same time, it can effectively reduce the equipment damage caused by circuit system leakage and the safety hazard to personnel, thereby greatly improving the stability and reliability of equipment operation.

[0004] To achieve the above object, the present invention provides a device and a monitoring method for online partial discharge monitoring: A device for online monitoring of partial discharge, comprising a discharge detection device and an auxiliary online strengthening mechanism, wherein at least one discharge detection device is provided, each discharge detection device is located in the auxiliary online strengthening mechanism and is electrically connected to the auxiliary online strengthening mechanism, the auxiliary online strengthening mechanism comprises a bearing frame, a guide rail, a hard insulating pad, an insulating partition, a terminal, a terminal block, an optical fiber communication device and a drive circuit, the bearing frame is a cavity structure with a rectangular cross section, at least two guide rails are provided, a plurality of guide rails are located in the bearing frame and symmetrically distributed on both sides of the axis of the bearing frame, a plurality of guide rails are distributed parallel to the axis of the bearing frame, a plurality of insulating partitions are provided in the bearing frame and are slidably connected to the guide rails through a plurality of hard insulating pads, and the insulating partition board surface is perpendicular to the axis of the bearing frame. The carrier frame is arranged in a manner that the carrier frame is arranged in a control cavity, a communication cavity and at least one detection cavity from front to back along the axis direction of the carrier frame, wherein the drive circuit is located in the control cavity, the optical fiber communication device is arranged in the communication cavity, the optical fiber communication device includes one, and each detection cavity is provided with a discharge detection device, the discharge detection device, the optical fiber communication device and the drive circuit are respectively slidably connected with the guide rail through a plurality of hard insulating pads, the outer side surfaces corresponding to the carrier frame and the control cavity, the communication cavity and the detection cavity are provided with a plurality of wiring posts and a plurality of wiring terminals, the drive circuit is respectively electrically connected with the discharge detection device and the optical fiber communication device, and the drive circuit, the optical fiber communication device and the discharge detection device arranged inside the control cavity, the communication cavity and the detection cavity are respectively electrically connected with the wiring posts and wiring terminals arranged corresponding to the outer walls of the three cavities.

[0005] Furthermore, the supporting frame includes two supporting columns, two supporting crossarms, multiple protective panels, multiple grounding terminals and a grounding electrode, wherein the two supporting columns and the two supporting crossarms are mutually clamped to form a frame structure with a rectangular cross section, the multiple protective panels are respectively embedded in the frame formed by the supporting columns and the supporting crossarms, and the multiple protective panels divide the frame formed by the columns and the supporting crossarms into multiple closed cavity structures, a grounding terminal is respectively arranged on the inner side surface of the supporting frame corresponding to the control cavity, the communication cavity and the detection cavity, and the multiple grounding terminals are respectively connected to the supporting crossarms at the bottom of the supporting frame, a grounding terminal is further arranged on the outer side surface of the supporting column corresponding to the control cavity, and the multiple grounding terminals are electrically connected through wires, the grounding terminals at the control cavity, the communication cavity and the detection cavity are respectively electrically connected to the optical fiber communication device, the driving circuit and the discharge detection device, and the grounding terminal on the outer side surface of the supporting frame is electrically connected to the grounding electrode through a wire.

[0006] Furthermore, the bearing crossarm and the bearing column are both trough-shaped structures with an "I"-shaped cross section, wherein the trough body on one side of the bearing crossarm located at the bottom of the bearing frame is located inside the bearing frame, and the trough body on the other side is located outside the bearing frame, the bearing crossarm and the bearing column are arranged perpendicular to each other, and trough bodies are respectively provided on the inner sides of both ends of the bearing column, and both side edges of the protective panel located in the frame formed by the bearing column and the bearing crossarm are slidably connected to the bearing column through the trough bodies of the bearing column, and the two side edges of the protective panel are respectively abutted against the bearing crossarm through elastic strips.

[0007] Furthermore, the grounding electrode includes an insulating sheath, a plurality of spring pieces, a conductive metal electrode column and a plurality of positioning columns, the insulating sheath is a hollow cylindrical tubular structure, the insulating sheath is coated on the outside of the conductive metal electrode column and is slidably connected to the conductive metal electrode column, the length of the conductive metal electrode column is at least times the length of the insulating sheath, and the length of the insulating sheath is greater than or equal to centimeters, the conductive metal electrode column includes a terminal, an insulating end cap, a bearing column and a guide cone, wherein the bearing column is a cylindrical structure, the front end face of the bearing column is connected to the guide cone and coaxially distributed, the guide cone is a conical structure, the rear end face of the bearing column is connected to at least one terminal, the lower end face of the terminal connected to the bearing column is electrically connected to the bearing column, and the upper end face is electrically connected to the grounding terminal on the outer side of the bearing frame through a wire, and the insulating end cap is coated on the terminal and the bearing column The outer side of the supporting column is slidingly connected with the outer side surface of the supporting column, at least four spring clips are arranged, and multiple spring clips are arranged on the outer wall of the supporting column and are evenly distributed around the outer wall of the supporting column, and the multiple spring clips are divided into two groups, and the two groups of spring clips are respectively located on both sides of the insulating sheath, and the distance between the two groups of spring clips and the insulating sheath is - cm, and the outer side surface of the spring clip exceeds the outer side surface of the supporting column by - mm, and at least three positioning columns are arranged, and multiple positioning columns are evenly distributed around the axis of the insulating sheath. The upper half of each positioning column is hinged to the outer side surface of the insulating sheath through a hinge, and the positioning column is arranged parallel to the insulating sheath. The distance between the hinge axis and the side of the insulating sheath close to the tip of the grounding electrode is %-% of the length of the insulating sheath, and the length of the positioning column is .-. times the length of the insulating sheath. The outer side surface of the insulating sheath corresponding to the positioning column is provided with multiple storage grooves, and the multiple positioning columns are respectively located in the multiple storage grooves.

[0008] Furthermore, the insulating partition includes two heat-conducting metal plates, a plurality of insulation ribs and a heat-insulating lining, wherein the heat-conducting metal plates, the insulation ribs and the insulation ribs are all plate-like structures with rectangular cross-sections, the insulation lining is located between the two heat-conducting metal plates, and the heat-conducting metal plates are arranged parallel to the insulation lining, the insulation lining is connected to the two heat-conducting metal plates through a plurality of insulation ribs, and the spacing between the heat-conducting metal plates and the insulation lining is - mm, the plurality of insulation ribs are respectively slidably connected to the two heat-conducting metal plates and the insulation lining through sliding grooves, the axis of the insulation ribs is perpendicular to the bottom and upper end surface of the supporting frame, a heat dissipation channel is formed between two adjacent insulation ribs, the top and bottom of the supporting frame corresponding to the heat dissipation channel are provided with a plurality of heat dissipation holes, and the plurality of heat dissipation holes are coaxially distributed with the heat dissipation channel.

[0009] Furthermore, the driving circuit is a circuit system based on an FPGA chip, and the driving circuit is further provided with a PID integration circuit, a multi-channel voltage stabilization circuit and an emergency power supply based on a battery pack.

[0010] A monitoring method for a device for online monitoring of partial discharge comprises the following steps: S1, equipment assembly, firstly, according to the use requirements, set the auxiliary online strengthening mechanism, and set the number and volume of the detection chambers of the auxiliary online strengthening mechanism, then respectively set the corresponding discharge detection device in each detection chamber, and then electrically connect each discharge detection device, optical fiber communication device, and driving circuit to complete the equipment assembly; S2, system connection. After completing step S1, the monitoring operation can be carried out. During the monitoring operation, the auxiliary online strengthening mechanism is first installed and fixed at the designated working position through the carrying frame, and then the wiring posts and terminals corresponding to the detection chambers where the discharge detection devices in the auxiliary online strengthening mechanism are located are electrically connected through wires, and the driving circuit is electrically connected to the external power supply through the wiring posts and terminals. Finally, the optical fiber communication device is connected to the external communication network through the communication optical fiber, and a data connection is established with the external remote monitoring platform through the external communication network; S3, monitoring operation, after completing step S2, the discharge detection device can continuously monitor the turntable of the monitored circuit, and during the monitoring process, the monitoring data of each discharge detection device is directly transmitted to the drive circuit, and then the drive circuit encodes and assembles the received discharge detection device data, and finally transmits the encoded assembly to the external remote monitoring platform through the optical fiber communication device, so as to realize continuous discharge monitoring operation.

[0011] Compared with the current traditional discharge monitoring device, the device structure of the present invention is flexible and convenient to adjust. The device structure can be flexibly adjusted according to the use requirements, thereby effectively meeting the needs of different use environments and circuit system monitoring operations. At the same time, during operation, it can also effectively reduce the damage to the discharge monitoring device caused by external force impact, dust, liquid and other pollutants. At the same time, it can also effectively reduce the equipment damage caused by circuit system leakage and the safety hazard to personnel, thereby greatly improving the stability and reliability of equipment operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of a partial structure of the present invention; Figure 2 It is a schematic diagram of the partial structure of the cross section of the load-bearing frame; Figure 3 is a schematic diagram of the grounding electrode structure; Figure 4 Schematic diagram of the insulating partition structure. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] See also Figure 1-Figure 4 A device for online monitoring of partial discharge includes a discharge detection device 1 and an auxiliary online strengthening mechanism 2, wherein at least one discharge detection device 1 is provided, and each discharge detection device 1 is located in the auxiliary online strengthening mechanism 2 and is electrically connected to the auxiliary online strengthening mechanism 2.

[0015] In this embodiment, the auxiliary online strengthening mechanism 2 includes a supporting frame 21, a guide rail 22, a hard insulating pad 23, an insulating partition 24, a terminal 25, a terminal 26, an optical fiber communication device 27 and a driving circuit 28. The supporting frame 21 is a cavity structure with a rectangular cross section. At least two guide rails 22 are provided. Multiple guide rails 22 are located in the supporting frame 21 and are symmetrically distributed on both sides of the axis of the supporting frame 21. Multiple guide rails 22 are distributed parallel to the axis of the supporting frame 21. Multiple insulating partitions 24 are arranged in the supporting frame 21 and are slidably connected to the guide rails 22 through multiple hard insulating pads 23. The board surface of the insulating partition 24 is perpendicular to the axis of the supporting frame 21, and the supporting frame is divided from front to back along the axis of the supporting frame 21 into a control cavity 3, a communication cavity 4 and at least one detection cavity 5, wherein the driving circuit 28 is located in the control cavity 3. , the optical fiber communication device 27 is arranged in the communication cavity 4, the optical fiber communication device 27 includes one, and each detection cavity 5 is provided with 1-2 discharge detection devices 1, the discharge detection device 1, the optical fiber communication device 27 and the driving circuit 28 are respectively slidably connected with the guide rail 22 through a plurality of hard insulating pads 23, and the outer side surfaces corresponding to the carrying frame 21 and the control cavity 3, the communication cavity 4 and the detection cavity 5 are provided with a plurality of binding posts 25 and a plurality of wiring terminals 26, and the wiring terminals 26 are used to connect various components, and the driving circuit 28 is respectively electrically connected with the discharge detection device 1 and the optical fiber communication device 27, and the driving circuit is used to drive the operation of the discharge detection device 1 and the optical fiber communication device 27, and the driving circuit 28, the optical fiber communication device 27 and the discharge detection device 1 arranged inside the control cavity 3, the communication cavity 4 and the detection cavity 8 are respectively electrically connected with the binding posts 25 and the wiring terminals 26 arranged corresponding to the outer walls of the three cavities.

[0016] In particular, the supporting frame 21 includes two supporting columns 211, two supporting cross arms 212, a plurality of protective panels 213, a plurality of grounding terminals 214 and a grounding electrode 215, wherein the two supporting columns 211 and the two supporting cross arms 212 are mutually engaged to form a frame structure with a rectangular cross section, and the plurality of protective panels 213 are respectively embedded in the frame formed by the supporting columns 211 and the supporting cross arms 212, and the plurality of protective panels 213 divide the frame formed by the columns 211 and the supporting cross arms 212 into a plurality of closed cavity structures, and the supporting frame 21 corresponding to the control cavity 3, the communication cavity 4 and the detection cavity 5 A grounding terminal 214 is respectively arranged on the inner side surface, and multiple grounding terminals 214 are respectively connected to the bearing crossbeam 212 at the bottom of the bearing frame 21; another grounding terminal 214 is arranged on the outer side surface of the bearing column 211 corresponding to the control cavity 3; multiple grounding terminals 214 are electrically connected through wires; the grounding terminals 214 at the control cavity 3, the communication cavity 4 and the detection cavity 5 are respectively electrically connected to the optical fiber communication device 27, the driving circuit 28 and the discharge detection device 1; the grounding terminal 214 on the outer side surface of the bearing frame 21 is electrically connected to the grounding electrode 215 through a wire; the grounding electrode 215 is grounded to prevent electric shock during operation.

[0017] It is particularly noted that the bearing crossarm 212 and the bearing column 211 are both groove-shaped structures with an "I"-shaped cross section, wherein the groove body on one side of the bearing crossarm 212 located at the bottom of the bearing frame 21 is located inside the bearing frame 21, and the groove body on the other side is located outside the bearing frame 21, the bearing crossarm 212 and the bearing column 211 are arranged perpendicular to each other, and groove bodies are respectively opened on the inner sides of both ends of the bearing column 211, and the two side edges of the protective panel 213 located in the frame formed by the bearing column 211 and the bearing crossarm 212 are slidably connected to the bearing column 211 through the groove bodies of the bearing column 211, and the two side edges of the protective panel 213 are respectively abutted against the bearing crossarm 212 through elastic strips 216, and the elastic strips 216 are used to prevent the protective panel 213 from being damaged by a hard collision with the bearing crossarm 212.

[0018] Specifically, the grounding electrode 215 includes an insulating sheath 2151, a plurality of spring pieces 2152, a conductive metal electrode column 2153 and a plurality of positioning columns 2154. The insulating sheath 2151 is a hollow cylindrical tubular structure. The insulating sheath 2151 is wrapped around the conductive metal electrode column 2153 and is slidably connected to the conductive metal electrode column 2153. The length of the conductive metal electrode column 2153 is at least 3 times the length of the insulating sheath 2151, and the length of the insulating sheath 2151 is greater than or equal to 10 cm. The conductive metal electrode column 2153 is wrapped around the conductive metal electrode column 2153. The structure includes a terminal 25, an insulating end cap 21532, a bearing column 21533 and a guide cone 21531, wherein the bearing column 21533 is a cylindrical structure, the front end face of the bearing column 21533 is connected to the guide cone 21531 and is coaxially distributed, the guide cone 21531 is a cone structure, the rear end face of the bearing column 21533 is connected to at least one terminal 25, the lower end face of the terminal 25 connected to the bearing column 21533 is electrically connected to the bearing column 21533, and the upper end face is electrically connected to the grounding terminal 214 on the outer side of the supporting frame 21 through a wire, The insulating end cap 21532 is covered on the outside of the terminal 25 and the bearing column 21533, and is slidably connected to the outer side of the bearing column 21533. At least four spring pieces 2152 are provided. Multiple spring pieces 2152 are arranged on the outer wall of the bearing column 21533 and are evenly distributed around the outer wall of the bearing column 21533. Multiple spring pieces 2152 are divided into two groups. The two groups of spring pieces 2152 are respectively located on both sides of the insulating sheath 2151. The distance between the two groups of spring pieces 2152 and the insulating sheath 2151 is 0-5 cm. The outer side of the spring piece 2152 exceeds the bearing column 21533. 1533 The outer side surface is 0-10 mm, and at least three positioning columns 2154 are arranged, and the plurality of positioning columns 2154 are evenly distributed around the axis of the insulating sheath 2151. The upper half of each positioning column 2154 is hinged to the outer side surface of the insulating sheath 2151 through a hinge, and the positioning column 2154 is arranged parallel to the insulating sheath 2151. The distance between the hinge axis and the side of the insulating sheath 2151 close to the tip of the grounding electrode 215 is 10%-30% of the length of the insulating sheath 2151, and the length of the positioning column 2154 is 0.5-1.5 times the length of the insulating sheath 2151.

[0019] When in use, the conductive metal electrode column 2153 and the positioning column 2154 outside the lower end surface of the insulating sheath 2151 are simultaneously inserted into the ground plane, thereby achieving reliable positioning between the grounding electrode 215 and the ground plane and achieving reliable grounding connection. At the same time, effective insulation protection operations are performed through the set insulating sheath 2151 and insulating end cap 21532.

[0020] As a further optimization, a plurality of receiving grooves 2155 are provided on the outer side of the insulating sheath 2151 corresponding to the positioning column 2154 , and the plurality of positioning columns 2154 are respectively located in the plurality of receiving grooves 2155 .

[0021] In this embodiment, the insulating partition 24 includes two heat-conducting metal plates 241, a plurality of heat-insulating ribs 242 and a heat-insulating lining 243, wherein the heat-conducting metal plates 241, the heat-insulating ribs 242 and the heat-insulating ribs 243 are all plate-shaped structures with rectangular cross sections, the heat-insulating lining 243 is located between the two heat-conducting metal plates 241, and the heat-conducting metal plates and the heat-insulating lining 243 are arranged in parallel, the heat-insulating lining 243 and the two heat-conducting metal plates 241 are connected by a plurality of heat-insulating ribs 242, and the heat-conducting metal plates 24 1 and the insulation lining 243 are 1-10 mm, and multiple insulation ribs 242 are slidably connected to the two heat-conducting metal plates 241 and the insulation lining 243 through sliding grooves respectively. The axis of the insulation rib 242 is perpendicular to the bottom and upper end surface of the supporting frame 21, and a heat dissipation channel 244 is formed between two adjacent insulation ribs 242. The top and bottom of the supporting frame 21 corresponding to the heat dissipation channel 244 are provided with multiple heat dissipation holes 245, and the multiple heat dissipation holes 245 are coaxially distributed with the heat dissipation channel 244.

[0022] In this embodiment, the driving circuit 28 is a circuit system based on an FPGA chip, and the driving circuit is further provided with a PID integration circuit, a multi-channel voltage stabilization circuit and an emergency power supply based on a battery pack.

[0023] A monitoring method for a device for online monitoring of partial discharge comprises the following steps: S1, equipment assembly, firstly, according to the use requirements, the auxiliary online strengthening mechanism 2 is set, and the number and volume of the detection chambers 5 of the auxiliary online strengthening mechanism 2 are set, and then the corresponding discharge detection device 1 is respectively set in each detection chamber 5, and then the discharge detection device 1, the optical fiber communication device 27, and the driving circuit 28 are electrically connected to complete the equipment assembly; S2, system connection. After completing step S1, the monitoring operation can be carried out. During the monitoring operation, the auxiliary online strengthening mechanism 2 is first installed and fixed at the designated working position through the supporting frame 21, and then the connecting posts 25 and the connecting terminals 26 corresponding to the detection chamber 5 where each discharge detection device 1 in the auxiliary online strengthening mechanism 2 is located are electrically connected through wires, and the driving circuit 28 is electrically connected to the external power supply through the connecting posts 25 and the connecting terminals 26. Finally, the optical fiber communication device 27 is connected to the external communication network through the communication optical fiber, and a data connection is established with the external remote monitoring platform through the external communication network; S3, monitoring operation, after completing step S2, the discharge detection device 1 can continuously monitor the turntable of the monitored circuit, and in the monitoring process, the monitoring data of each discharge detection device 1 is directly transmitted to the drive circuit 28, and then the drive circuit 28 encodes and assembles the received data of the discharge detection device 1, and finally transmits the encoded assembly to the external remote monitoring platform through the optical fiber communication device 27, so as to realize continuous discharge monitoring operation.

[0024] Compared with the current traditional discharge monitoring device, the device structure of the present invention is flexible and convenient to adjust. The device structure can be flexibly adjusted according to the use requirements, thereby effectively meeting the needs of different use environments and circuit system monitoring operations. At the same time, during operation, it can also effectively reduce the damage to the discharge monitoring device caused by external force impact, dust, liquid and other pollutants. At the same time, it can also effectively reduce the equipment damage caused by circuit system leakage and the safety hazard to personnel, thereby greatly improving the stability and reliability of equipment operation.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0026] In the description of this specification, the terms "connect", "install", "fix", "set", etc. are understood in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and the technical effect. It can also be an integral connection or a partial connection. As in this example, for ordinary technicians in this field, the specific meanings of the above terms in the present invention or invention can be understood according to the specific circumstances.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for online monitoring of partial discharge, comprising: A discharge detection device and an auxiliary online strengthening mechanism, wherein at least one discharge detection device is provided, each discharge detection device is located in the auxiliary online strengthening mechanism and is electrically connected to the auxiliary online strengthening mechanism, characterized in that the auxiliary online strengthening mechanism includes a carrying frame, a guide rail, a hard insulating pad, an insulating partition, a terminal, a terminal block, an optical fiber communication device and a drive circuit, the carrying frame is a cavity structure with a rectangular cross section, at least two guide rails are provided, a plurality of guide rails are located in the carrying frame and are symmetrically distributed on both sides of the axis of the carrying frame, a plurality of guide rails are distributed parallel to the axis of the carrying frame, a plurality of insulating partitions are provided in the carrying frame and are slidably connected to the guide rails through a plurality of hard insulating pads, and the insulating partition board surface is perpendicularly distributed to the axis of the carrying frame and along the carrying frame The rack axis direction divides the supporting rack into a control cavity, a communication cavity and at least one detection cavity from front to back, wherein the drive circuit is located in the control cavity, the optical fiber communication device is arranged in the communication cavity, the optical fiber communication device includes one, and each detection cavity is provided with a discharge detection device, the discharge detection device, the optical fiber communication device and the drive circuit are respectively slidably connected with the guide rail through a plurality of hard insulating pads, and the outer side surfaces corresponding to the supporting rack and the control cavity, the communication cavity and the detection cavity are provided with a plurality of wiring posts and a plurality of wiring terminals, the drive circuit is electrically connected with the discharge detection device and the optical fiber communication device respectively, and the drive circuit, the optical fiber communication device and the discharge detection device arranged inside the control cavity, the communication cavity and the detection cavity are respectively electrically connected with the wiring posts and wiring terminals arranged corresponding to the outer walls of the three cavities.

2. A device for online monitoring of partial discharge according to claim 1, characterized in that: The supporting frame includes two supporting columns, two supporting cross arms, multiple protective panels, multiple grounding terminals and a grounding electrode, wherein the two supporting columns and the two supporting cross arms are mutually clamped to form a frame structure with a rectangular cross section, the multiple protective panels are respectively embedded in the frame formed by the supporting columns and the supporting cross arms, and the multiple protective panels divide the frame formed by the columns and the supporting cross arms into multiple closed cavity structures, a grounding terminal is respectively arranged on the inner side surface of the supporting frame corresponding to the control cavity, the communication cavity and the detection cavity, and the multiple grounding terminals are respectively connected to the supporting cross arms at the bottom of the supporting frame, a grounding terminal is further arranged on the outer side surface of the supporting column corresponding to the control cavity, and the multiple grounding terminals are electrically connected through wires, the grounding terminals at the control cavity, the communication cavity and the detection cavity are respectively electrically connected to the optical fiber communication device, the driving circuit and the discharge detection device, and the grounding terminal on the outer side surface of the supporting frame is electrically connected to the grounding electrode through a wire.

3. The device for online monitoring of partial discharge according to claim 2, characterized in that: The bearing crossarm and the bearing column are both trough-shaped structures with an "I"-shaped cross section, wherein the trough body on one side of the bearing crossarm located at the bottom of the bearing frame is located inside the bearing frame, and the trough body on the other side is located outside the bearing frame, the bearing crossarm and the bearing column are arranged perpendicular to each other, and trough bodies are respectively opened on the inner sides of both ends of the bearing column, and the two side edges of the protective panel located in the frame formed by the bearing column and the bearing crossarm are slidably connected to the bearing column through the trough bodies of the bearing column, and the two side edges of the protective panel are respectively abutted against the bearing crossarm through elastic strips.

4. The device for online monitoring of partial discharge according to claim 2, characterized in that: The grounding electrode comprises an insulating sheath, a plurality of spring pieces, a conductive metal electrode column and a plurality of positioning columns, wherein the insulating sheath is a hollow cylindrical tubular structure, the insulating sheath is coated on the outside of the conductive metal electrode column and is slidably connected to the conductive metal electrode column, the length of the conductive metal electrode column is at least times the length of the insulating sheath, and the length of the insulating sheath is greater than or equal to centimeters, the conductive metal electrode column comprises a terminal, an insulating end cap, a bearing column and a guide cone, wherein the bearing column is a cylindrical structure, the front end face of the bearing column is connected to the guide cone and is coaxially distributed, the guide cone is a cone structure, the rear end face of the bearing column is connected to at least one terminal, the lower end face of the terminal connected to the bearing column is electrically connected to the bearing column, and the upper end face is electrically connected to the grounding terminal on the outer side of the bearing frame through a wire, the insulating end cap is coated on the outside of the terminal and the bearing column, And it is slidingly connected with the outer side surface of the bearing column, at least four spring clips are arranged, and multiple spring clips are arranged on the outer wall of the bearing column and evenly distributed around the outer wall of the bearing column, multiple spring clips are divided into two groups, the two groups of spring clips are respectively located on both sides of the insulating sleeve, the distance between the two groups of spring clips and the insulating sleeve is - cm, the outer side surface of the spring clip exceeds the outer side surface of the bearing column by - mm, at least three positioning columns are arranged, multiple positioning columns are evenly distributed around the axis of the insulating sleeve, the upper half of each positioning column is hinged to the outer side surface of the insulating sleeve through a hinge, the positioning column and the insulating sleeve are arranged parallel, the distance between the hinge axis and the side of the insulating sleeve close to the tip of the grounding electrode is %-% of the length of the insulating sleeve, and the length of the positioning column is .-. times the length of the insulating sleeve, the outer side surface of the insulating sleeve corresponding to the positioning column is provided with multiple storage grooves, and the multiple positioning columns are respectively located in the multiple storage grooves.

5. The device for online monitoring of partial discharge according to claim 1, characterized in that: The insulating partition includes two heat-conducting metal plates, multiple heat-insulating ribs and a heat-insulating lining, wherein the heat-conducting metal plates, the heat-insulating ribs and the heat-insulating ribs are all plate-like structures with rectangular cross-sections, the heat-insulating lining is located between the two heat-conducting metal plates, and the heat-conducting metal plates are arranged parallel to the heat-insulating lining, the heat-insulating lining is connected to the two heat-conducting metal plates through multiple heat-insulating ribs, and the spacing between the heat-conducting metal plates and the heat-insulating lining is - millimeters, multiple heat-insulating ribs are respectively slidably connected to the two heat-conducting metal plates and the heat-insulating lining through sliding grooves, the axis of the heat-insulating ribs is perpendicular to the bottom and upper end surface of the supporting frame, a heat dissipation channel is formed between two adjacent heat-insulating ribs, and the top and bottom of the supporting frame corresponding to the heat dissipation channel are provided with multiple heat dissipation holes, and the multiple heat dissipation holes are coaxially distributed with the heat dissipation channel.

6. The device for online monitoring of partial discharge according to claim 1, characterized in that: The driving circuit is a circuit system based on an FPGA chip, and the driving circuit is further provided with a PID integration circuit, a multi-channel voltage stabilization circuit and an emergency power supply based on a battery pack.

7. The monitoring method of a device for online monitoring of partial discharge according to claim 1, characterized in that: The monitoring method of the device for online monitoring of partial discharge comprises the following steps: S1, equipment assembly, firstly, according to the use requirements, set the auxiliary online strengthening mechanism, and set the number and volume of the detection chambers of the auxiliary online strengthening mechanism, then respectively set the corresponding discharge detection device in each detection chamber, and then electrically connect each discharge detection device, optical fiber communication device and driving circuit, so as to complete the equipment assembly; S2, system connection. After completing step S1, the monitoring operation can be carried out. During the monitoring operation, the auxiliary online strengthening mechanism is first installed and fixed at the designated working position through the carrying frame, and then the wiring posts and terminals corresponding to the detection chambers where the discharge detection devices in the auxiliary online strengthening mechanism are located are electrically connected through wires, and the driving circuit is electrically connected to the external power supply through the wiring posts and terminals. Finally, the optical fiber communication device is connected to the external communication network through the communication optical fiber, and a data connection is established with the external remote monitoring platform through the external communication network; S3, monitoring operation, after completing step S2, the discharge detection device can continuously monitor the turntable of the monitored circuit, and during the monitoring process, the monitoring data of each discharge detection device is directly transmitted to the drive circuit, and then the drive circuit encodes and assembles the received discharge detection device data, and finally transmits the encoded assembly to the external remote monitoring platform through the optical fiber communication device, so as to realize continuous discharge monitoring operation.

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