CN104237746A - Partial discharge detector used for electrical equipment - Google Patents
Partial discharge detector used for electrical equipment Download PDFInfo
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- CN104237746A CN104237746A CN201310232143.0A CN201310232143A CN104237746A CN 104237746 A CN104237746 A CN 104237746A CN 201310232143 A CN201310232143 A CN 201310232143A CN 104237746 A CN104237746 A CN 104237746A
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- Prior art keywords
- ultraviolet
- partial discharge
- discharge detector
- ultraviolet light
- photomultiplier
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Abstract
The invention discloses a partial discharge detector used for electrical equipment. The partial discharge detector comprises a control terminal, a plurality of ultraviolet imagers, a plurality of photomultiplier tubes and a plurality of ultraviolet light filtering lenses. The signal output ends of the photomultiplier tubes are connected with the signal input ends of the corresponding ultraviolet imagers. The signal input end of the control terminal is connected with the signal output ends of the ultraviolet imagers. According to the partial discharge detector used for the electrical equipment, most heterogeneous light is filtered out through the ultraviolet light filtering lenses, the ultraviolet light is retained, the detector detects the ultraviolet light without being influenced by the environmental temperature, signals are enhanced and magnified after the ultraviolet light passes through the photomultiplier tubes, the ultraviolet imagers can detect the ultraviolet light clearly, and the accuracy of detection of the discharge detector is improved.
Description
Technical field
The present invention relates to a kind of detecting device for power equipment, particularly relate to a kind of partial discharge detector for power equipment.
Background technology
Often depend on the dielectric strength of insulating material the serviceable life of power equipment, due to the impact of the factor such as tenure of use and working environment, to fracture phenomenon be there is in the insulating material of power equipment, if now electric field intensity is higher than 20-30KV/cm, the multi-form electric discharge such as corona, flashover or electric arc may be there is in power equipment outside, in discharge process, electronics constantly releases energy, outwardly radiated sound, light, and nitric acid and ozone etc., on the one hand, electric discharge will cause the further cracking of insulating material, cause equipment failure, thus affect power supply quality; On the other hand, discharge and will consume a large amount of electric energy, according to incompletely statistics, the whole nation is every year because the electric energy of described loss of discharging reaches 2.05 × 10
9kWh.In addition, the pulse electromagnetic wave that produces of discharging can produce interference to radio and high-frequency communication, therefore, detect accurately and orientation discharge point for device security, energy-conservationly to list and index, and environmental protection is extremely important.
Utilize power equipment external discharge can produce this characteristic of light, use imaging technique, the situation that electric discharge occurs can be observed visual pattern, compared with conventional ultrasonic wave detection technique, adopt optical image technology to detect shelf depreciation and can locate remote point of discharge intuitively, exactly, the location of particularly multiple spot electric discharge simultaneously.In addition optical image technology mainly comprises visual light imaging, near infrared imaging and ultraviolet light imaging, and the principle that infrared imaging is heated up by measuring equipment detects electric discharge, but is subject to the impact of environment temperature, and the accuracy of detecting device is had a greatly reduced quality.
Summary of the invention
Object of the present invention is just to provide to solve the problem a kind of not influenced by ambient temperature, partial discharge detector for power equipment that accuracy in detection is high.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of partial discharge detector for power equipment, comprise control terminal, multiple ultraviolet imager, multiple photomultiplier and multiple ultraviolet filtering eyeglass, the signal output part of described photomultiplier connects with the signal input part of corresponding described ultraviolet imager, and the signal input part of described control terminal is connected with the signal output part of multiple described ultraviolet imager respectively.
As preferably, described photomultiplier is dynode type photomultiplier.
Beneficial effect of the present invention is:
The present invention is used for the partial discharge detector of power equipment, most of heterochromatic light is filtered by ultraviolet filtering eyeglass, retain ultraviolet light, the detection on ultraviolet light that this detecting device adopts is not by the impact of environment temperature, ultraviolet light signal after photomultiplier is enhanced amplification, ultraviolet imager can detect ultraviolet light clearly, and the accuracy that discharge detector detects is enhanced.
Accompanying drawing explanation
Fig. 1 is the structural representation of the partial discharge detector for power equipment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the present invention is used for the partial discharge detector of power equipment, comprise control terminal 4, multiple ultraviolet imager 3, multiple photomultiplier 2 and multiple ultraviolet filtering eyeglass 1, the signal output part of photomultiplier 2 connects with the signal input part of corresponding ultraviolet imager 3, and the signal input part of control terminal 4 is connected with the signal output part of multiple ultraviolet imager 3 respectively.
Photomultiplier 2 is dynode type photomultiplier.
Use the present invention as follows for the principle of work of the partial discharge detector of power equipment:
The shelf depreciation of power equipment can be emitted in the ultraviolet light in solar blind (220-280nm), and multiple ultraviolet filtering eyeglass 1 is arranged on each easy position occurring electric discharge of power equipment.There is the position of electric discharge, ultraviolet light can be filtered other heterochromatic lights of major part after ultraviolet filtering eyeglass 1, through ultraviolet lighting be mapped to ultraviolet light and strengthen on photoelectric tube 2, signal exports after being enhanced and amplifying, ultraviolet imager 3 clearly can detect ultraviolet light, and being sent to control terminal 4 after dynamic and static state image is recorded, the electric discharge phenomena that then image that control terminal 4 contrasts adjacent relevant device occurs power equipment and position judge.
Claims (2)
1. the partial discharge detector for power equipment, it is characterized in that: comprise control terminal, multiple ultraviolet imager, multiple photomultiplier and multiple ultraviolet filtering eyeglass, the signal output part of described photomultiplier connects with the signal input part of corresponding described ultraviolet imager, and the signal input part of described control terminal is connected with the signal output part of multiple described ultraviolet imager respectively.
2. the partial discharge detector for power equipment according to claim 1, is characterized in that: described photomultiplier is dynode type photomultiplier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310232143.0A CN104237746A (en) | 2013-06-13 | 2013-06-13 | Partial discharge detector used for electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310232143.0A CN104237746A (en) | 2013-06-13 | 2013-06-13 | Partial discharge detector used for electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104237746A true CN104237746A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310232143.0A Pending CN104237746A (en) | 2013-06-13 | 2013-06-13 | Partial discharge detector used for electrical equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN104237746A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110275096A (en) * | 2019-06-25 | 2019-09-24 | 国家电网有限公司 | Insulator surface defect local discharge detection device and detection method |
| CN110988772A (en) * | 2019-12-19 | 2020-04-10 | 国网山西省电力公司电力科学研究院 | Check-up comparison circuit of ultraviolet imager |
| CN110988773A (en) * | 2019-12-19 | 2020-04-10 | 国网山西省电力公司电力科学研究院 | Verification comparison method of ultraviolet imager |
| CN113009294A (en) * | 2021-02-25 | 2021-06-22 | 西安交通大学 | Non-lens discharge positioning device and method |
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| KR20100002152U (en) * | 2008-08-20 | 2010-03-03 | 한국전기안전공사 | Portable discharging UV analyzer |
| CN101706548A (en) * | 2009-11-06 | 2010-05-12 | 宁波大学 | Optical detection device for corona discharge |
| US20100163743A1 (en) * | 2008-12-30 | 2010-07-01 | Korea Electric Safety Corp. | Partial discharge measuring apparatus using uv sensor array and method thereof |
| CN201654175U (en) * | 2010-04-09 | 2010-11-24 | 重庆大学 | Power equipment visual detection device based on partial discharge signal |
| JP2012141178A (en) * | 2010-12-28 | 2012-07-26 | Toshiba Corp | Partial discharge detecting system |
| CN202486267U (en) * | 2011-12-14 | 2012-10-10 | 武汉市兑尔科技有限公司 | Corona detection apparatus based on UV narrow band spectrum |
| CN202710705U (en) * | 2012-08-22 | 2013-01-30 | 郑州光力科技股份有限公司 | Pollution flashover arc monitoring system for high-voltage transmission and transformation lines |
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2013
- 2013-06-13 CN CN201310232143.0A patent/CN104237746A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100002152U (en) * | 2008-08-20 | 2010-03-03 | 한국전기안전공사 | Portable discharging UV analyzer |
| US20100163743A1 (en) * | 2008-12-30 | 2010-07-01 | Korea Electric Safety Corp. | Partial discharge measuring apparatus using uv sensor array and method thereof |
| CN101706548A (en) * | 2009-11-06 | 2010-05-12 | 宁波大学 | Optical detection device for corona discharge |
| CN201654175U (en) * | 2010-04-09 | 2010-11-24 | 重庆大学 | Power equipment visual detection device based on partial discharge signal |
| JP2012141178A (en) * | 2010-12-28 | 2012-07-26 | Toshiba Corp | Partial discharge detecting system |
| CN202486267U (en) * | 2011-12-14 | 2012-10-10 | 武汉市兑尔科技有限公司 | Corona detection apparatus based on UV narrow band spectrum |
| CN202710705U (en) * | 2012-08-22 | 2013-01-30 | 郑州光力科技股份有限公司 | Pollution flashover arc monitoring system for high-voltage transmission and transformation lines |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110275096A (en) * | 2019-06-25 | 2019-09-24 | 国家电网有限公司 | Insulator surface defect local discharge detection device and detection method |
| CN110988772A (en) * | 2019-12-19 | 2020-04-10 | 国网山西省电力公司电力科学研究院 | Check-up comparison circuit of ultraviolet imager |
| CN110988773A (en) * | 2019-12-19 | 2020-04-10 | 国网山西省电力公司电力科学研究院 | Verification comparison method of ultraviolet imager |
| CN113009294A (en) * | 2021-02-25 | 2021-06-22 | 西安交通大学 | Non-lens discharge positioning device and method |
| CN113009294B (en) * | 2021-02-25 | 2022-05-03 | 西安交通大学 | Non-lens discharge positioning device and method |
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Application publication date: 20141224 |
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| WD01 | Invention patent application deemed withdrawn after publication |