CN203444096U - Verifying device of ultrahigh frequency partial discharge detector of high-voltage switch device - Google Patents
Verifying device of ultrahigh frequency partial discharge detector of high-voltage switch device Download PDFInfo
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- CN203444096U CN203444096U CN201320596146.8U CN201320596146U CN203444096U CN 203444096 U CN203444096 U CN 203444096U CN 201320596146 U CN201320596146 U CN 201320596146U CN 203444096 U CN203444096 U CN 203444096U
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- partial discharge
- electromagnetic wave
- superfrequency
- metal shell
- ultrahigh frequency
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- 239000002184 metal Substances 0.000 claims abstract description 21
- 125000006850 spacer group Chemical group 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 abstract description 10
- 238000001514 detection method Methods 0.000 abstract description 9
- 238000012795 verification Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
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Abstract
The utility model discloses a verifying device of an ultrahigh frequency partial discharge detector of a high-voltage switch device. The verifying device of the high-voltage switch device ultrahigh frequency partial discharge detector comprises a hollow metal shell with an open hole, an insulating supporting rod is arranged in the middle of the metal shell vertically, and an electromagnetic wave signal-generator is fixed on the insulating supporting rod. An insulating spacer is plugged in the open hole, and an ultrahigh frequency sensor is pasted on the outside of the insulating spacer and is connected with the ultrahigh frequency partial discharge detector. The two ends of the insulating supporting rod are fixed inside the metal shell, and the amplitude of the electromagnetic wave signal-generator can be adjusted. According to the utility model, the verification method and device are provided to an insulating detector based on the ultrahigh frequency, and based on an ultrahigh frequency detection principle, the electromagnetic wave signal-generator is designed to simulate a generated discharging signal, and simulate the propagation and leakage paths of an electromagnetic wave in the high-voltage switch device by combining with the metal shell with a gap, so that the verification of the ultrahigh frequency detector is realized.
Description
Technical field
The utility model relates to a kind of calibration equipment, relates in particular to the calibration equipment of a kind of high-tension switch gear superfrequency Partial discharge detector.
Background technology
When existing insulation defect, high-tension switch gear inside can produce shelf depreciation, by can effectively judging the state of insulation of high-tension switch gear to the detection of shelf depreciation.In the detection method of the inner local discharge signal of high-tension switch gear, superfrequency method is used more, is the method compared with practical at present.
When the inner shelf depreciation of high-tension switch gear occurs, electromagnetic wave is to the transmission of electric discharge two ends.Because the impact of kelvin effect, the transmission voltage of metal inside can not from outside direct detection to.But at an opening part of metal shell, electromagnetic wave can see through insulating element and reveal space outerpace.By superfrequency sensor is installed on the insulating element in metal shell junction, the electric discharge phenomena of high-tension switch gear inside can be detected.
In high-tension switch gear insulator, dielectric strength and breakdown field strength are all very high, and when shelf depreciation occurs in very little scope, breakdown process is very fast, will produce very steep pulse current, and its rise time is less than 1ns, and stimulating frequency is up to the electromagnetic wave of several GHz.Partial Discharge Detection superfrequency (Ultra-High-Frequency, abbreviation UHF) method proposes in early 1980s Qi You Britain central power office (CEGB) laboratory, its ultimate principle is by superfrequency sensor, superfrequency electromagnetic wave (300MHz≤f≤3GHz) signal producing during shelf depreciation in power equipment to be detected, thereby the relevant information that obtains shelf depreciation, realizes partial discharge monitoring.According to the difference of field apparatus situation, can adopt built-in ultrahigh frequency sensor or external superfrequency sensor.Because the dizzy interference at scene mainly concentrates on below 300MHz frequency range, therefore superfrequency method can be avoided the on-the-spot interference such as corona effectively, there is higher sensitivity and antijamming capability, can realize the advantages such as shelf depreciation band electro-detection, location and Classifcation of flaws.The method has become the Main Means that the on-the-spot insulation of high-tension switch gear detects in recent years.
The PSDDeng company of the DMSHe Korea S that mainly contains Britain of current production superfrequency detector, this technology is applied comparatively extensive abroad, just progressively promote the use of at home in recent years, during Beijing Olympic, Shanghai World Expo all as one of main charged checkout equipment, effectively find many potential high-tension switch gear insulation defects, in protecting electricity work, brought into play extremely important effect.
But superfrequency detection method belongs to unconventional office and puts detection method, do not have direct IEC standard and national standard to be suitable for, thereby superfrequency detector does not have available calibration equipment.For grid company operating maintenance personnel, use for a long time a kind of detector, whether the performance of this instrument itself can change, and whether the data of demonstration are accurate, can directly have influence on the efficiency of service work and the safety of power equipment itself.
Utility model content
The purpose of this utility model is exactly in order to address the above problem, the calibration equipment that a kind of high-tension switch gear superfrequency Partial discharge detector is provided, this device can carry out verification to the insulation tester based on superfrequency using in current grid company maintenance process.
To achieve these goals, the utility model adopts following technical scheme:
The calibration equipment of a kind of high-tension switch gear superfrequency Partial discharge detector, the metal shell with perforate that comprises hollow, in described metal shell, centre position is vertically provided with insulating support rod, Motionless electromagnetic wave generator on described insulating support rod, in described perforate, be plugged with insulation spacer, superfrequency sensor is posted in described insulation spacer outside, and described superfrequency sensor is connected with superfrequency Partial discharge detector.
Described insulating support rod two ends are fixed on metal shell inside.
Described electromagnetic wave signal generator is that amplitude is adjustable, by Signal Regulation knob, can produce the electromagnetic wave signal of a plurality of varying strengths.
Described metal shell and electromagnetic wave signal generator are without direct electrical connection.
Described electromagnetic wave signal generator is internal battery.
The beneficial effects of the utility model are: for the insulation tester based on superfrequency provides method of calibration and equipment, this device is from the detection principle of superfrequency, design electromagnetic wave signal generator, the discharge signal that simulation occurs, in conjunction with the metal shell with gap, electromagnetic wave propagation and leakage paths in simulated high-pressure switchgear, realize the verification of superfrequency detector.
Accompanying drawing explanation
Fig. 1 is the structural representation of the insulation tester verifying attachment based on superfrequency;
Wherein, 1 is electromagnetic wave signal generator, and 2 is insulating support rod, and 3 is metal shell, and 4 is insulation spacer, and 5 is superfrequency sensor, and 6 is superfrequency Partial discharge detector.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
As shown in Figure 1, the calibration equipment of a kind of high-tension switch gear superfrequency Partial discharge detector, the metal shell 3 with perforate that comprises hollow, the interior centre position of described metal shell 3 is vertically provided with insulating support rod 2, Motionless electromagnetic wave generator 1 on described insulating support rod 2, in described perforate, be plugged with insulation spacer 4, superfrequency sensor 5 is posted in described insulation spacer 4 outsides, and described superfrequency sensor 5 is connected with superfrequency Partial discharge detector 6.
Described insulating support rod 2 two ends are fixed on metal shell 3 inside.
Described electromagnetic wave signal generator 1 is that amplitude is adjustable, by Signal Regulation knob, can produce the electromagnetic wave signal of a plurality of varying strengths.
Described metal shell 3 and the directly electrical connection of electromagnetic wave signal generator 1 nothing.
Method of work of the present utility model: when 1 work of electromagnetic wave signal generator, externally send the electromagnetic wave signal of some strength, leak by insulation spacer 4, can carry out verification to superfrequency Partial discharge detector 6.
Described electromagnetic wave signal generator 1 is internal battery.
The model of described electromagnetic wave signal generator 1 is SDDKY-1.
Although above-mentioned, by reference to the accompanying drawings embodiment of the present utility model is described; but the not restriction to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various modifications that creative work can make or distortion still in protection domain of the present utility model.
Claims (4)
1. the calibration equipment of a high-tension switch gear superfrequency Partial discharge detector, it is characterized in that, the metal shell with perforate that comprises hollow, in described metal shell, centre position is vertically provided with insulating support rod, Motionless electromagnetic wave generator on described insulating support rod, in described perforate, be plugged with insulation spacer, superfrequency sensor is posted in described insulation spacer outside, and described superfrequency sensor is connected with superfrequency Partial discharge detector.
2. the calibration equipment of a kind of high-tension switch gear superfrequency as claimed in claim 1 Partial discharge detector, is characterized in that, described insulating support rod two ends are fixed on metal shell inside.
3. the calibration equipment of a kind of high-tension switch gear superfrequency as claimed in claim 1 Partial discharge detector, is characterized in that, described electromagnetic wave signal generator is that amplitude is adjustable, by Signal Regulation knob, can produce the electromagnetic wave signal of a plurality of varying strengths.
4. the calibration equipment of a kind of high-tension switch gear superfrequency as claimed in claim 1 Partial discharge detector, is characterized in that, described metal shell and electromagnetic wave signal generator are without direct electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320596146.8U CN203444096U (en) | 2013-09-25 | 2013-09-25 | Verifying device of ultrahigh frequency partial discharge detector of high-voltage switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320596146.8U CN203444096U (en) | 2013-09-25 | 2013-09-25 | Verifying device of ultrahigh frequency partial discharge detector of high-voltage switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203444096U true CN203444096U (en) | 2014-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320596146.8U Expired - Fee Related CN203444096U (en) | 2013-09-25 | 2013-09-25 | Verifying device of ultrahigh frequency partial discharge detector of high-voltage switch device |
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| CN (1) | CN203444096U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223530A (en) * | 2015-10-20 | 2016-01-06 | 国家电网公司 | High frequency partial discharge detector verification system and calibration method thereof |
| CN114114123A (en) * | 2021-11-29 | 2022-03-01 | 广东电网有限责任公司广州供电局 | Calibration device and method for partial discharge detection sensor |
-
2013
- 2013-09-25 CN CN201320596146.8U patent/CN203444096U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223530A (en) * | 2015-10-20 | 2016-01-06 | 国家电网公司 | High frequency partial discharge detector verification system and calibration method thereof |
| CN114114123A (en) * | 2021-11-29 | 2022-03-01 | 广东电网有限责任公司广州供电局 | Calibration device and method for partial discharge detection sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20180925 |