CN113156170A - On-line monitoring device for insulation level of power transformation equipment - Google Patents
On-line monitoring device for insulation level of power transformation equipment Download PDFInfo
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- CN113156170A CN113156170A CN202110291887.4A CN202110291887A CN113156170A CN 113156170 A CN113156170 A CN 113156170A CN 202110291887 A CN202110291887 A CN 202110291887A CN 113156170 A CN113156170 A CN 113156170A
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- clamping
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- line monitoring
- insulation level
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
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Abstract
The invention discloses an on-line monitoring device for the insulation level of a power transformation device, which relates to the field of insulation detection of power system equipment and comprises an installation pipe, a clamping pipe sleeved on the installation pipe and an on-line monitoring component, wherein the installation pipe is provided with an installation pipe open slot along the direction of the side wall, the inner wall of the installation pipe is provided with a clamping component, and the far end of the outer side wall of the installation pipe away from the installation pipe open slot is provided with a fastening mechanism component; the side wall of the clamping pipe is provided with a clamping pipe slot; the device has the advantages of simple structure and convenient operation, increases the installation firmness of the cable by the design of the fixing pipe and the clamping pipe, and simultaneously can monitor the insulation level of the cable on line so as to avoid safety accidents.
Description
Technical Field
The invention relates to the field of insulation detection of power system equipment, in particular to an on-line insulation level monitoring device for power transformation equipment.
Background
Failures of electrical systems and electrical equipment are mostly caused by damage to the insulation. The working voltage of the cable in the power transformation equipment is over several tens of kV, even up to 1000kV, and the insulation condition is an important index related to the safe operation of the power grid. However, due to the high operating voltage, the insulation of the device cannot be detected directly during operation of the device.
At present, the existing method is to stop the cable every year and detect the insulation level of the cable. Usually, whether insulation is safe or not is determined by inspection of maintainers and observation and experience, and major safety accidents are caused when the insulation level is lowered.
Disclosure of Invention
In order to overcome the problems, the invention provides an on-line monitoring device for the insulation level of the power transformation equipment.
In order to achieve the purpose, the invention adopts the following technical scheme:
an on-line monitoring device for the insulation level of a power transformation device comprises an installation pipe, a clamping pipe sleeved on the installation pipe and an on-line monitoring part, wherein the installation pipe is provided with an installation pipe open slot along the direction of a side wall, meanwhile, the inner wall of the installation pipe is provided with a clamping assembly, and the far end of the outer side wall of the installation pipe away from the installation pipe open slot is provided with a fastening mechanism assembly; the side wall of the clamping pipe is provided with a clamping pipe slot.
When the invention carries out cable insulation level monitoring, because the installation pipe clamping pipe is of a structure with two open ends, a cable can be placed in the installation pipe and fixed by the clamping component arranged on the inner wall of the installation pipe and the clamping pipe, because the installation pipe slotting and the clamping pipe slotting are arranged on the side walls of the installation pipe and the clamping pipe, before the cable is installed, the clamping pipe is rotated firstly, the installation pipe slotting and the clamping pipe slotting are positioned at the same side, at the moment, when the cable is installed, the installation pipe and the clamping pipe are slightly opened according to the self elasticity, the cable installation is convenient, after the cable is installed, the installation pipe and the clamping pipe retract to clamp the cable, then in order to prevent the cable from loosening, at the moment, the clamping pipe can be rotated, the clamping pipe slotting is rotatably arranged at the far end of the installation pipe slotting, so that the installation pipe can be prevented from loosening, the cable can be firmly clamped, and after the clamping pipe slotting is rotated to the far end of the installation pipe slotting, the fastening mechanism assembly on the outer side wall of the installation pipe can fasten the clamping pipe through the clamping pipe slotting, and the clamping pipe is fixed. After the cable is fixed, the insulation level of the cable can be monitored through the online monitoring component, and safety accidents are avoided.
Preferably, the installation pipe is provided with a slot along the length direction of the installation pipe and penetrates through two ends of the installation pipe.
So that the installation pipe can be opened and contracted according to the elasticity of the installation pipe when the cable is installed.
Preferably, the clamping assembly comprises a connecting column which is connected with the inner wall of the installation pipe and arranged along the radial direction of the installation pipe, and clamping pieces are arranged at the end part of the connecting column.
Preferably, the clamping assembly is provided with a plurality of clamping assemblies, the plurality of clamping assemblies are arranged on the installation pipe in the circumferential direction at equal intervals, and a plurality of clamping pieces on the clamping assemblies surround a clamping space.
The cable can be clamped more firmly in the clamping space formed by the connecting column and the clamping sheet.
Preferably, the fastening mechanism assembly comprises a fastening groove, a spring and a fastening block, and the fastening block is elastically connected in the fastening groove through the spring.
After the cable is installed, the clamping tube is slotted to rotate to the far end of the installation tube slot, the spring in a compression state in the fastening mechanism assembly can pop out the fastening block, and the clamping tube slot is matched to realize the fixation of the clamping tube.
Preferably, the clamping tube is provided with a slot along the length direction and penetrates through two ends of the clamping tube.
Preferably, the on-line monitoring part comprises an induction line wound on the outer wall of the installation pipe, two ends of the induction line respectively extend to the outer side of the installation pipe to form a closed loop, a current detection device is connected to the closed loop, and a central processing module is connected to the current detection device.
Preferably, the online monitoring component further comprises a communication module, and the communication module is connected with the central processing module.
The invention tests the insulation level of the cable by an online monitoring component, wherein the rated insulation level of the cable to be detected is stored in a central processing module, the rated insulation level is the rated current value detected by a current detection device under the normal working state of the cable, the current detection device sends the detected induced current to the central processing module and compares the induced current with the rated current value stored in the central processing module so as to judge the insulation level of the cable to be detected, and finally, the central processing module sends the judged insulation level condition of the cable to be detected to the outside through a communication module.
Preferably, the outer wall of the mounting pipe is provided with a placement groove, and the induction line is arranged in the placement groove.
Preferably, the two ends of the clamping pipe are provided with limit rings, and the limit rings are abutted to the end part of the installation pipe.
Therefore, the invention has the following beneficial effects: the device has the advantages of simple structure and convenient operation, increases the installation firmness of the cable through the design of the installation pipe and the clamping pipe, and simultaneously can monitor the insulation level of the cable on line so as to avoid safety accidents.
Drawings
FIG. 1 is a schematic cross-sectional structure of the present invention.
Fig. 2 is a schematic view of another cross-sectional structure of the present invention.
Fig. 3 is an enlarged schematic view of the invention at a.
Fig. 4 is a schematic structural diagram of the present invention.
Figure 5 is a schematic view of the mounting tube and clamping tube configuration of the present invention.
In the figure: the device comprises an installation pipe 1, an installation pipe slotting 11, a clamping component 12, a connecting column 121, a clamping sheet 122, a clamping space 123, a fastening mechanism component 13, a fastening groove 131, a spring 132, a fastening block 133, a placing groove 14, a clamping pipe 2, a clamping pipe slotting 21, a limiting ring 22, an online monitoring part 3, an induction line 31, a current detection device 32, a central processing module 33 and a communication module 34.
Detailed Description
The invention is further described with reference to specific embodiments.
Example 1: as shown in fig. 1-2, an online monitoring device for insulation level of power transformation equipment includes a mounting pipe 1, a clamping pipe 2 sleeved on the mounting pipe 1, and an online monitoring component 3, where the mounting pipe 1 is provided with a mounting pipe slot 11 along a side wall direction, the mounting pipe slot 11 is provided in a length direction of the mounting pipe and penetrates through two ends of the mounting pipe, and meanwhile, a plurality of clamping components 12 are provided on an inner wall of the mounting pipe, the clamping components 12 include a connecting column 121 connected to an inner wall of the mounting pipe 1 and provided along a radial direction of the mounting pipe, a plurality of clamping pieces 122 are provided at an end of the connecting column 121, and a plurality of clamping components 12 are provided, the plurality of clamping components 12 are arranged at equal intervals in a circumferential direction of the mounting pipe 1, and the plurality of clamping pieces on the clamping components 12 enclose a clamping space 123; the far end of the outer side wall of the installation pipe 1 from the installation pipe slot 11 is provided with a fastening mechanism assembly 13, as shown in fig. 3, the fastening mechanism assembly 13 comprises a fastening slot 131, a spring 132 and a fastening block 133, and the fastening block 133 is elastically connected in the fastening slot 131 through the spring 132.
As shown in fig. 1-2, a clamping tube slot 21 is formed on the side wall of the clamping tube 2; the pinch-off blades 21 are arranged in the length direction of the pinch-off blades and penetrate through the two ends of the pinch-off blades 2, as shown in fig. 5, the two ends of the pinch-off blades 2 are provided with limiting rings 22, and the limiting rings 22 are abutted to the end portions of the installation tubes 1.
As shown in fig. 4, the online monitoring component 3 includes an induction wire 31 wound around the outer wall of the installation pipe, the outer wall of the installation pipe 1 is provided with a placement groove 14, and the induction wire 31 is disposed in the placement groove 14; the both ends of induction line 31 extend to the outside of installation pipe 1 respectively to form closed circuit, be connected with current detection device 32 on the closed circuit, the last connection of current detection device 32 is equipped with central processing module 33, on-line monitoring part 3 still includes communication module 34, communication module 34 is connected with central processing module 33.
When the invention monitors the cable insulation level, because the installation tube 1 is a structure with two open ends, the cable can be placed in the installation tube and fixed by the clamping component arranged on the inner wall, because the installation tube 1 and the clamping tube 2 are provided with the installation tube slot 11 and the clamping tube slot 21 on the side wall, before the cable is installed, the clamping tube is rotated, the installation tube slot 11 and the clamping tube slot 21 are positioned at the same side, as shown in figure 1, at the moment, when the cable is installed, the installation tube 1 and the clamping tube 2 are slightly opened according to the self elasticity, the installation of the cable is convenient, after the cable is installed, the installation tube 1 and the clamping tube 2 retract to clamp the cable, then, in order to prevent the cable from loosening, the clamping tube 2 can be rotated, the clamping tube slot 21 is rotatably arranged at the far end of the installation tube slot 11, thereby preventing the installation tube 1 from loosening and firmly clamping the cable, and when the clamp tube slot 21 is rotated to the distal end of the installation tube slot 11, as shown in fig. 2, the spring 132, which is now compressed in the fastening mechanism assembly 13, will eject the fastening block 133 to engage the clamp tube slot 21 to secure the clamp tube. After the cable is fixed, the insulation level of the cable can be monitored through the online monitoring component 3, wherein the rated insulation level of the cable to be detected is stored in the central processing module, the rated insulation level is a rated current value detected by the current detection device under a normal working state of the cable, the current detection device sends detected induced current to the central processing module and compares the induced current with the rated current value stored in the central processing module to judge the insulation level of the cable to be detected, and finally, the central processing module sends the judged insulation level condition of the cable to be detected to the outside through the communication module.
The raw materials and equipment used in the invention are common raw materials and equipment in the field if not specified; the methods used in the present invention are conventional in the art unless otherwise specified.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. The on-line monitoring device for the insulation level of the power transformation equipment is characterized by comprising a mounting pipe (1), a clamping pipe (2) sleeved on the mounting pipe (1) and an on-line monitoring part (3), wherein the mounting pipe (1) is provided with a mounting pipe open groove (11) along the side wall direction, meanwhile, the inner wall of the mounting pipe (1) is provided with a clamping assembly (12), and the far end of the outer side wall of the mounting pipe open groove (11) is provided with a fastening mechanism assembly (13); the side wall of the clamping pipe (2) is provided with a clamping pipe slot (21).
2. The insulation level online monitoring device for the power transformation equipment as recited in claim 1, wherein the installation tube slot (11) is formed in the length direction of the installation tube and penetrates through two ends of the installation tube.
3. A transformer equipment insulation level on-line monitoring device according to claim 1, characterized in that the clamping assembly (12) comprises a connecting column (121) connected with the inner wall of the mounting tube (1) and arranged along the radial direction of the mounting tube, and a clamping sheet (122) is arranged at the end of the connecting column (121).
4. A power transformation equipment insulation level on-line monitoring device as claimed in claim 3, characterized in that said clamping assemblies (12) are provided in plurality, a plurality of clamping assemblies (12) are arranged at equal intervals in the circumferential direction of said mounting tube (1), and a clamping space (123) is defined by the clamping sheets on a plurality of clamping assemblies (12).
5. A substation equipment insulation level on-line monitoring device according to claim 1, characterized in that the fastening mechanism assembly (13) comprises a fastening slot (131), a spring (132) and a fastening block (133), and the fastening block (133) is elastically connected in the fastening slot (131) through the spring (132).
6. A power transformation equipment insulation level on-line monitoring device as claimed in claim 1, characterized in that the clamp tube slot (21) is arranged in the clamp tube length direction and penetrates through both ends of the clamp tube (2).
7. A transformer equipment insulation level on-line monitoring device according to any one of claims 1-6, characterized in that the on-line monitoring component (3) comprises an induction wire (31) wound on the outer wall of the installation tube, both ends of the induction wire (31) respectively extend to the outer side of the installation tube (1) and form a closed loop, a current detection device (32) is connected to the closed loop, and a central processing module (33) is connected to the current detection device (32).
8. A transformation equipment insulation level on-line monitoring device according to claim 7, characterized in that the on-line monitoring component (3) further comprises a communication module (34), and the communication module (34) is connected with a central processing module (33).
9. The insulation level online monitoring device for the power transformation equipment as recited in claim 7, wherein a mounting groove (14) is formed in the outer wall of the mounting pipe (1), and the induction wire (31) is arranged in the mounting groove (14).
10. A power transformation equipment insulation level on-line monitoring device as claimed in any of claims 1-6, characterized in that limiting rings (22) are arranged at two ends of the clamping tube (2), and the limiting rings (22) are abutted against the end of the mounting tube (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110291887.4A CN113156170A (en) | 2021-03-18 | 2021-03-18 | On-line monitoring device for insulation level of power transformation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110291887.4A CN113156170A (en) | 2021-03-18 | 2021-03-18 | On-line monitoring device for insulation level of power transformation equipment |
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| Publication Number | Publication Date |
|---|---|
| CN113156170A true CN113156170A (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110291887.4A Pending CN113156170A (en) | 2021-03-18 | 2021-03-18 | On-line monitoring device for insulation level of power transformation equipment |
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| CN (1) | CN113156170A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933669A (en) * | 2021-12-17 | 2022-01-14 | 江苏安世朗智能科技有限公司 | Intelligent insulation detection system for online IT system |
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| CN106771477A (en) * | 2016-11-28 | 2017-05-31 | 国网福建省电力有限公司 | The highly sensitive high voltage direct current cable leakage current detection sensor of New Large Caliber |
| CN207442195U (en) * | 2017-10-30 | 2018-06-01 | 广州番禺电缆集团有限公司 | Multi-functional cabinet protection device |
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| CN109909974A (en) * | 2019-04-28 | 2019-06-21 | 盐城工学院 | A kind of dedicated detection of electrical leakage robot of aerial cables |
| CN209764997U (en) * | 2019-03-29 | 2019-12-10 | 云南电网有限责任公司电力科学研究院 | transient grounding voltage coupling device for cable body insulation partial discharge |
| CN211014773U (en) * | 2019-12-23 | 2020-07-14 | 河南华脉通信技术有限公司 | Optical cable fixing clamp for monitoring power communication optical cable network |
-
2021
- 2021-03-18 CN CN202110291887.4A patent/CN113156170A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205176195U (en) * | 2015-10-22 | 2016-04-20 | 国网甘肃省电力公司天水供电公司 | Insulating status monitoring device of cable jacket |
| CN106771477A (en) * | 2016-11-28 | 2017-05-31 | 国网福建省电力有限公司 | The highly sensitive high voltage direct current cable leakage current detection sensor of New Large Caliber |
| CN207442195U (en) * | 2017-10-30 | 2018-06-01 | 广州番禺电缆集团有限公司 | Multi-functional cabinet protection device |
| CN208255349U (en) * | 2018-05-21 | 2018-12-18 | 安徽亚智电气有限公司 | Insulation of electrical installation on-Line Monitor Device |
| CN109406844A (en) * | 2018-12-12 | 2019-03-01 | 福建华继电气科技有限公司 | A kind of detachability casing on-line monitoring connection folder |
| CN209764997U (en) * | 2019-03-29 | 2019-12-10 | 云南电网有限责任公司电力科学研究院 | transient grounding voltage coupling device for cable body insulation partial discharge |
| CN109909974A (en) * | 2019-04-28 | 2019-06-21 | 盐城工学院 | A kind of dedicated detection of electrical leakage robot of aerial cables |
| CN211014773U (en) * | 2019-12-23 | 2020-07-14 | 河南华脉通信技术有限公司 | Optical cable fixing clamp for monitoring power communication optical cable network |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933669A (en) * | 2021-12-17 | 2022-01-14 | 江苏安世朗智能科技有限公司 | Intelligent insulation detection system for online IT system |
| CN113933669B (en) * | 2021-12-17 | 2022-03-11 | 江苏安世朗智能科技有限公司 | Intelligent insulation detection system for online IT system |
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Application publication date: 20210723 |
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| RJ01 | Rejection of invention patent application after publication |