CN110763963A - Ring main unit internal discharge detection device - Google Patents
Ring main unit internal discharge detection device Download PDFInfo
- Publication number
- CN110763963A CN110763963A CN201911072836.1A CN201911072836A CN110763963A CN 110763963 A CN110763963 A CN 110763963A CN 201911072836 A CN201911072836 A CN 201911072836A CN 110763963 A CN110763963 A CN 110763963A
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- main unit
- ring main
- optical fiber
- hole
- detection device
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- 238000001514 detection method Methods 0.000 title claims abstract description 43
- 239000013307 optical fiber Substances 0.000 claims abstract description 28
- 239000010410 layer Substances 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 5
- 238000012545 processing Methods 0.000 description 7
- 239000000835 fiber Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000007405 data analysis Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009614 chemical analysis method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to a device for detecting discharge inside a ring main unit, which comprises the ring main unit and a detection assembly; one side of the ring main unit is provided with a wire passing hole; the detection assembly comprises a support frame, an adapter and a fluorescent optical fiber; one end of the fluorescent optical fiber is connected with the adapter, and the other end of the fluorescent optical fiber penetrates through the wire passing hole and then enters and is distributed in the ring main unit; the diameter of the fluorescent optical fiber is equal to the aperture of the wire through hole; the fluorescent optical fiber is positioned at the part outside the ring main unit and is wrapped by a light shielding layer. Above-mentioned looped netowrk cabinet internal discharge detection device, simple structure, convenient to use sets up the line hole in one side of looped netowrk cabinet, and the aperture of crossing the line hole equals with fluorescence optical fiber's diameter, prevents to cross to produce the clearance between line hole and the fluorescence optical fiber, can guarantee looped netowrk cabinet's leakproofness effectively, and the sensitivity and the degree of accuracy that detect are guaranteed to the exposure of while still rancour fluorescence optical fiber and carry out the shading.
Description
Technical Field
The invention relates to the technical field of power equipment maintenance and detection, in particular to a ring main unit internal discharge detection device.
Background
Electrical equipment such as transformers and ring main units play an important role in high-voltage power transmission and transformation systems, and any device fault can cause large economic loss, and one important reason causing the device fault is partial discharge caused by insulation degradation in the device.
Partial discharge is an indication of insulation degradation, and meanwhile, insulation defects can be further enlarged to deepen the degradation degree, so that the partial discharge needs to be monitored in a real-time online manner in a power system, and can be accurately positioned, and further protective measures are taken in advance. The existing detection methods include a pulse current method, an ultrahigh frequency method, an ultrasonic method, a chemical analysis method, a photometric method, and the like. Through practical use, the detection result of only the optical method is found to be relatively stable and accurate. However, the optical measurement method is used for the ring main unit, and how to realize the sealing of the ring main unit, ensure the light-tight property, reduce the interference of visible light to optical signals generated by partial discharge, and ensure the sensitivity and accuracy of detection is a problem which needs to be solved urgently at present.
Disclosure of Invention
Based on the technical scheme, the device for detecting the internal discharge of the ring main unit is simple in structure and convenient to use, and can effectively guarantee the sealing performance of the ring main unit and guarantee the sensitivity and accuracy of detection.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a device for detecting discharge inside a ring main unit comprises the ring main unit and a detection assembly connected with the ring main unit; one side of the ring main unit is provided with a wire passing hole; the detection assembly comprises a support frame, an adapter arranged on the support frame and a fluorescent optical fiber arranged at one end of the adapter; one end of the fluorescent optical fiber is connected with the adapter, and the other end of the fluorescent optical fiber penetrates through the wire passing hole and then enters and is distributed in the ring main unit; the diameter of the fluorescent optical fiber is equal to the aperture of the wire through hole; the fluorescent optical fiber is positioned at the part outside the ring main unit and is wrapped by a light shielding layer.
Above-mentioned looped netowrk cabinet internal discharge detection device, simple structure, convenient to use sets up the line hole in one side of looped netowrk cabinet, and the aperture of crossing the line hole equals with fluorescence optical fiber's diameter, prevents to cross to produce the clearance between line hole and the fluorescence optical fiber, can guarantee looped netowrk cabinet's leakproofness effectively, and the sensitivity and the degree of accuracy that detect are guaranteed to the exposure of while still rancour fluorescence optical fiber and carry out the shading.
In one embodiment, the ring main unit comprises a main body, a fixing part installed at one side of the main body, and a cover plate covering the fixing part; the wire passing hole is formed in the cover plate.
In one embodiment, a through hole is formed in one side of the cabinet body, and the through hole penetrates through the side wall of the cabinet body; the fixing part corresponds to the through hole, and the inner diameter of the fixing part is larger than the aperture of the through hole.
In one embodiment, one end of the fixing portion is provided with a plurality of first assembling holes arranged at intervals, the periphery of the cover plate is provided with a plurality of second assembling holes arranged at intervals, and the second assembling holes correspond to the first assembling holes one to one.
In one embodiment, the diameter of the cover plate is equal to the outer diameter of the fixing portion.
In one embodiment, the fixing portion is disposed annularly.
In one embodiment, the cover plate is further provided with a first positioning hole; one end of the support frame is provided with a second positioning hole, and the second positioning hole corresponds to the first positioning hole.
In one embodiment, the cabinet body is arranged in a cabinet type structure, and the interior of the cabinet body is used for accommodating electric devices for installation.
In one embodiment, the adapter is an FC interface.
In one embodiment, the light shielding layer is a black coating layer, a wire sleeve or a black electrical tape.
Drawings
Fig. 1 is a schematic perspective view of an internal discharge detection device of a ring main unit according to an embodiment of the present invention;
fig. 2 is an exploded schematic view of the ring main unit internal discharge detection device shown in fig. 1;
fig. 3 is a schematic perspective view of a cover plate in the discharge detection device inside the ring main unit shown in fig. 2;
fig. 4 is a schematic perspective view of a detection assembly in the ring main unit internal discharge detection device shown in fig. 2.
Reference is made to the accompanying drawings in which:
10-ring main unit, 11-main unit, 12-fixed part, 13-cover plate, 14-through hole, 15-first assembly hole, 16-second assembly hole, 17-fastener, 18-wire passing hole, 19-first positioning hole;
20-a detection assembly, 21-a support frame, 22-a conversion joint, 23-a fluorescent optical fiber, 24-a second positioning hole and 25-a shading layer.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1 to 4, a ring main unit internal discharge detection apparatus according to an embodiment of the present invention includes a ring main unit 10 and a detection component 20 connected to the ring main unit 10; the detection component 20 is also used for connecting an external processing device to output the detection result to the external processing device for data analysis and processing.
The ring main unit 10 includes a main unit 11, a fixing portion 12 installed at one side of the main unit 11, and a cover plate 13 covering the fixing portion 12. The cabinet 11 is configured in a cabinet structure, and the cabinet 11 is used for accommodating electric devices (not shown) for installation. A through hole 14 is formed in one side of the cabinet body 11, and the through hole 14 penetrates through the side wall of the cabinet body 11, so that the inside and the outside of the cabinet body 11 are communicated with each other. In this embodiment, the fixing portion 12 is disposed in a ring shape, and the fixing portion 12 corresponds to the through hole 14. Further, the fixing portion 12 is welded to one side of the cabinet body 11, and the inner diameter of the fixing portion 12 is larger than the aperture of the through hole 14, so that leakage between the fixing portion 12 and the cabinet body is avoided, and the sealing performance is guaranteed.
Further, in the present embodiment, one end of the fixing portion 12 is provided with a plurality of first assembling holes 15 arranged at regular intervals. The diameter of apron 13 with the external diameter of fixed part 12 equals, the periphery of apron 13 is equipped with a plurality of second equipment holes 16 that are even interval setting, second equipment hole 16 with first equipment hole 15 one-to-one utilizes fastener 17 to wear to establish connect behind second equipment hole 16 in first equipment hole 15, can with apron 13 lid is located on the fixed part 12, guarantee wholly the leakproofness of looped netowrk cabinet 10.
In the present embodiment, the fastener 17 is a fastener such as a bolt.
Still further, the middle part of the cover plate 13 is further provided with a wire passing hole 18 penetrating through the body of the cover plate 13 and a first positioning hole 19 located on one side of the wire passing hole 18, and the first positioning hole 19 is used for connecting the detection component 20.
The detection assembly 20 comprises a support frame 21, an adapter 22 mounted on the support frame 21, and a fluorescent optical fiber 23 mounted at one end of the adapter 22; one end of the fluorescent optical fiber 23 is connected to the adapter 22, and the other end of the fluorescent optical fiber penetrates through the wire passing hole 18 and enters and is distributed inside the cabinet body 11, so as to capture an optical signal caused by partial discharge of electrical equipment in the ring main unit 10. Specifically, the diameter of the fluorescent optical fiber 23 is equal to the aperture of the wire passing hole 18, so that a gap is prevented from being generated between the fluorescent optical fiber 23 and the via hole 18, external light is effectively prevented from entering, and the accuracy of a detection result is ensured.
As shown in fig. 4, one end of the supporting frame 21 is provided with a second positioning hole 24, the second positioning hole 24 corresponds to the first positioning hole 19, and the supporting frame 21 and the cover plate 13 can be connected by inserting a rivet through the second positioning hole 24 and the first positioning hole 19, so as to connect and mount the detecting assembly 20 and the ring main unit 10.
In this embodiment, the adapter 22 is an FC (Fiber Channel) interface, one end of the adapter 22 is connected to the fluorescent Fiber 23, and the other end of the adapter 22 is used to connect an external processing device, so as to output the detection result to the external processing device for data analysis and processing.
Further, in order to ensure the accuracy of the detection result and prevent the detection result from being polluted by other light sources, a light shielding layer 25 is further wrapped on the part of the fluorescent optical fiber 23 located outside the ring main unit 10. In the present embodiment, the light shielding layer 25 is a black coating layer, such as a black phosphatized primer or the like. In other embodiments, the light shielding layer 25 may be a wire sleeve or a black electrical tape, and may have the same light shielding effect as that of the present embodiment.
Above-mentioned looped netowrk cabinet internal discharge detection device, simple structure, convenient to use sets up wire passing hole 18 in one side of looped netowrk cabinet 10, and the aperture of wire passing hole 18 equals with fluorescent fiber 23's diameter, prevents to cross to produce the clearance between wire passing hole 18 and the fluorescent fiber 23, can guarantee looped netowrk cabinet 10's leakproofness effectively, and the sensitivity and the degree of accuracy of detection are guaranteed to the exposure of rancour fluorescent fiber 23 simultaneously and carry out the shading processing.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A device for detecting discharge inside a ring main unit is characterized by comprising the ring main unit and a detection assembly connected with the ring main unit; one side of the ring main unit is provided with a wire passing hole; the detection assembly comprises a support frame, an adapter arranged on the support frame and a fluorescent optical fiber arranged at one end of the adapter; one end of the fluorescent optical fiber is connected with the adapter, and the other end of the fluorescent optical fiber penetrates through the wire passing hole and then enters and is distributed in the ring main unit; the diameter of the fluorescent optical fiber is equal to the aperture of the wire through hole; the fluorescent optical fiber is positioned at the part outside the ring main unit and is wrapped by a light shielding layer.
2. The ring main unit internal discharge detection device according to claim 1, wherein the ring main unit includes a main unit, a fixing portion mounted on one side of the main unit, and a cover plate covering the fixing portion; the wire passing hole is formed in the cover plate.
3. The ring main unit internal discharge detection device according to claim 2, wherein a through hole is formed in one side of the main unit body, and the through hole penetrates through a side wall of the main unit body; the fixing part corresponds to the through hole, and the inner diameter of the fixing part is larger than the aperture of the through hole.
4. The ring main unit internal discharge detection device as claimed in claim 2, wherein one end of the fixing portion is provided with a plurality of first assembling holes arranged at intervals, and a periphery of the cover plate is provided with a plurality of second assembling holes arranged at intervals, wherein the second assembling holes correspond to the first assembling holes one to one.
5. The ring main unit internal discharge detection device according to claim 2, wherein a diameter of the cover plate is equal to an outer diameter of the fixing portion.
6. The ring main unit internal discharge detection device as claimed in claim 2, wherein the fixing portion is disposed in a ring shape.
7. The ring main unit internal discharge detection device according to claim 2, wherein the cover plate is further provided with a first positioning hole; one end of the support frame is provided with a second positioning hole, and the second positioning hole corresponds to the first positioning hole.
8. The ring main unit internal discharge detection device as claimed in claim 2, wherein the main unit is configured as a cabinet, and the cabinet is configured to accommodate therein an electric device for installation.
9. The ring main unit internal discharge detection device according to claim 1, wherein the adapter is an FC interface.
10. The ring main unit internal discharge detection device as claimed in claim 1, wherein the light shielding layer is a black coating layer, a wire sleeve or a black electrical tape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911072836.1A CN110763963A (en) | 2019-11-05 | 2019-11-05 | Ring main unit internal discharge detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911072836.1A CN110763963A (en) | 2019-11-05 | 2019-11-05 | Ring main unit internal discharge detection device |
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| Publication Number | Publication Date |
|---|---|
| CN110763963A true CN110763963A (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911072836.1A Pending CN110763963A (en) | 2019-11-05 | 2019-11-05 | Ring main unit internal discharge detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929550A (en) * | 2020-09-15 | 2020-11-13 | 海南电网有限责任公司电力科学研究院 | Partial discharge judgment device for power equipment |
| CN112666427A (en) * | 2020-11-27 | 2021-04-16 | 广西电网有限责任公司电力科学研究院 | Signal extraction device for partial discharge in switch cabinet and detection method |
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| KR20150061414A (en) * | 2013-11-27 | 2015-06-04 | 엘에스산전 주식회사 | Composite partial discharge detecting sensor assembly for gas insulated switchgear |
| CN205029671U (en) * | 2015-10-09 | 2016-02-10 | 无锡市联合电控设备有限公司 | Looped netowrk is optic fibre send -receiver device for cabinet |
| CN106324765A (en) * | 2015-07-10 | 2017-01-11 | 深圳先进技术研究院 | Optical fiber sealing switching device |
| CN107045095A (en) * | 2017-02-07 | 2017-08-15 | 西安交通大学 | A kind of optical fiber superfrequency compound sensor and GIS partial discharge detection means |
| CN107329054A (en) * | 2017-07-06 | 2017-11-07 | 上海交通大学 | The compound sensor detected for gas-insulating and fully-enclosed combined electrical apparatus insulation defect |
| CN211528588U (en) * | 2019-11-05 | 2020-09-18 | 广州供电局有限公司 | Ring main unit internal discharge detection device |
-
2019
- 2019-11-05 CN CN201911072836.1A patent/CN110763963A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20150061414A (en) * | 2013-11-27 | 2015-06-04 | 엘에스산전 주식회사 | Composite partial discharge detecting sensor assembly for gas insulated switchgear |
| CN106324765A (en) * | 2015-07-10 | 2017-01-11 | 深圳先进技术研究院 | Optical fiber sealing switching device |
| CN205029671U (en) * | 2015-10-09 | 2016-02-10 | 无锡市联合电控设备有限公司 | Looped netowrk is optic fibre send -receiver device for cabinet |
| CN107045095A (en) * | 2017-02-07 | 2017-08-15 | 西安交通大学 | A kind of optical fiber superfrequency compound sensor and GIS partial discharge detection means |
| CN107329054A (en) * | 2017-07-06 | 2017-11-07 | 上海交通大学 | The compound sensor detected for gas-insulating and fully-enclosed combined electrical apparatus insulation defect |
| CN211528588U (en) * | 2019-11-05 | 2020-09-18 | 广州供电局有限公司 | Ring main unit internal discharge detection device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111929550A (en) * | 2020-09-15 | 2020-11-13 | 海南电网有限责任公司电力科学研究院 | Partial discharge judgment device for power equipment |
| CN111929550B (en) * | 2020-09-15 | 2023-08-22 | 海南电网有限责任公司电力科学研究院 | Power equipment partial discharge judging device |
| CN112666427A (en) * | 2020-11-27 | 2021-04-16 | 广西电网有限责任公司电力科学研究院 | Signal extraction device for partial discharge in switch cabinet and detection method |
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Effective date of registration: 20200925 Address after: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510620 Tianhe District, Guangzhou, Tianhe South Road, No. two, No. 2, No. Applicant before: GUANGZHOU POWER SUPPLY Co.,Ltd. |