CN207096378U - A kind of acoustoelectric combined partial discharge detecting system of switch cubicle - Google Patents
A kind of acoustoelectric combined partial discharge detecting system of switch cubicle Download PDFInfo
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- CN207096378U CN207096378U CN201720435942.1U CN201720435942U CN207096378U CN 207096378 U CN207096378 U CN 207096378U CN 201720435942 U CN201720435942 U CN 201720435942U CN 207096378 U CN207096378 U CN 207096378U
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- switch cubicle
- partial discharge
- sensor
- detecting system
- combined partial
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Abstract
A kind of acoustoelectric combined partial discharge detecting system of switch cubicle, it includes ultrasonic sensor, uhf sensor, HF current transformer, power frequency component collecting unit, conditioning filter and amplification unit, Multi-path synchronous acquisition system, control and data analysis system；The effect of detecting system provided by the utility model is that polytype detection means can be gathered, avoided using the limitation present in single method.
Description
Technical field
The utility model belongs to power equipment Partial Discharge Detection field, more particularly to a kind of acoustoelectric combined office of switch cubicle
Portion's discharging detecting system.
Background technology
At present, with the continuous improvement to power system power supply reliability requirement, high-tension switch cabinet directly band circuit outlet
Load, directly affect the power supply reliability of user.High-tension switch cabinet is one of equipment that quantity is most in primary equipment again.According to
The failure mode analysis of high-voltage switch gear cabinet equipment is understood, wherein insulation class failure is most, is mainly shown as insulation breakdown.For exhausted
The method that the problem of edge class failure can adopt live detection is monitored, from the point of view of field operation experiences, overwhelming majority insulation class event
Hindering all can be with the generation of shelf depreciation in early stage, it is therefore necessary to Partial Discharge Detection is carried out, in advance existing for discovering device
Latency defect, takes measures, and avoids developing into failure.Mainly there is superelevation currently for method for detection of partial discharge of switch cabinet
Frequently the methods of (UHF), ultrasonic method (AE), transient earth voltage (TEV), hyperfrequency method is received caused by shelf depreciation using sensor
Hyperfrequency electromagnetic signal, shelf depreciation is detected according to hyperfrequency electromagnetic signal, this method has preferably anti-interference
Performance, but shelf depreciation electricity size can not be quantified；Supersonic detection method is not disturbed by electromagnetic wave signal, but is believed in electric discharge
When number by metal or dielectric, attenuation ratio is more serious；Transient earth voltage method passes through during sensing shelf depreciation
Discharge pulse caused transient earth voltage on switch cubicle surface detects local housing loan, and it is easily done by the electromagnetism at scene
Disturb.
In view of problem present in the above method, it is therefore necessary to propose a kind of detection for gathering polytype detection means
Device, to make up defect present in prior art, there is provided one kind fast and accurately can be entered to high-tension switch cabinet shelf depreciation
The system of row detection.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, there is provided one kind collection sonac, hyperfrequency
The acoustoelectric combined partial discharge detecting system of switch cubicle that sensor, HF current transformer are integrated, ultrasound, superelevation can be supported
Frequently, the detection of three kinds of signals of high frequency electric, multichannel synchronousing collection is carried out to the Partial Discharge Data of same switch cubicle, met existing
The actual demand of field detection.
In order to achieve the above object, the acoustoelectric combined partial discharge detecting system of switch cubicle provided by the utility model includes：
Ultrasonic wave (AE) sensor, hyperfrequency (UHF) sensor, high frequency electric (HFCT) transformer, power frequency component collecting unit, conditioning
Filter and amplification unit, Multi-path synchronous acquisition system, control and data analysis system.
Described ultrasonic sensor, uhf sensor, HF current transformer are connected to conditioning filter and amplification list
The input of member, the output end of the conditioning filter and amplification unit are connected to Multi-path synchronous acquisition system, Multi-path synchronous collection system
The output end of system is connected to control and data analysis system.
The power frequency component collecting unit directly extracts required power frequency letter from the 110V power supplys or PT secondary sides of transformer station
Number, after decompression and signal condition unit, Multi-path synchronous acquisition system is connected to, is put to the acoustoelectric combined part of the switch cubicle
Electricity detecting system provides phase synchronized signal.
Described HF current transformer is placed in switch cabinet bus side joint ground wire, and described uhf sensor is placed in switch
The front window of cabinet.
In order to improve the operation portability of the acoustoelectric combined partial discharge detecting system of the switch cubicle, by described hyperfrequency
Sensor is arranged to microstrip-type sensor.
Zero cross detection circuit is provided with the power frequency component collecting unit, for entering rower to the zero crossing of synchronizing voltage
Note, then the output token signal in a manner of impulse wave, are recorded with the phase to local discharge signal.
The utility model has the advantages that：Joint-detection, design are carried out using ultra-high frequency signal, ultrasonic signal etc.
The integrated integrated partial discharge detecting system such as hyperfrequency, ultrasound and high frequency electric detection unit, avoids using single method
Existing limitation, propose to carry out above method into the thinking of joint-detection, improve detection efficiency and detection accuracy；Increase
Frequency signal gathering unit is processed, for providing the reference synchronization phase needed for signal detection.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the schematic diagram of the acoustoelectric combined partial discharge detecting system of switch cubicle provided by the utility model.
Embodiment
【Embodiment 1】
Below in conjunction with the accompanying drawings with specific embodiment to the acoustoelectric combined Partial Discharge Detection of switch cubicle provided by the utility model
System is described in detail.
A kind of acoustoelectric combined partial discharge detecting system of switch cubicle, as shown in figure 1, including ultrasonic wave (AE) sensor, surpassing
High frequency (UHF) sensor, high frequency electric (HFCT) transformer, power frequency component collecting unit, conditioning filter and amplification unit, multichannel are same
Walk acquisition system, control and data analysis system.
Described ultrasonic sensor, uhf sensor, HF current transformer are connected to conditioning filter and amplification list
The input of member, the output end of the conditioning filter and amplification unit are connected to Multi-path synchronous acquisition system, Multi-path synchronous collection system
The output end of system is connected to control and data analysis system.
The power frequency component collecting unit directly extracts required power frequency letter from the 110V power supplys or PT secondary sides of transformer station
Number, after decompression and signal condition unit, Multi-path synchronous acquisition system is connected to, is put to the acoustoelectric combined part of the switch cubicle
Electricity detecting system provides phase synchronized signal.
Described HF current transformer is placed in switch cabinet bus side joint ground wire, and described uhf sensor is placed in switch
The front window of cabinet.
In partial discharge of switchgear Site Detection, the problem of avoiding external disturbance from being important, in order to take into account detection device
Sensitivity and anti-interference, the detection frequency band of equipment is 0.3GHZ-1GHZ, is put to improve the acoustoelectric combined part of the switch cubicle
The operation portability of electricity detecting system, described uhf sensor is arranged to microstrip-type sensor, uhf sensor inspection
The ultra-high frequency signal measured, after signal condition, filtering, 40db amplifications, the high-Speed Data-Acquisition Module of equipment will be entered.Separately
Outside, amplitude limit device is added at discharge circuit, the interference signal damage amplifying circuit for avoiding uhf sensor from coupling.
In the acoustoelectric combined partial discharge detecting system of switch cubicle provided by the utility model, ultrasonic sensor selects PAC
The R15 α type ultrasonic sensors of company's production.
In the design process of the acoustoelectric combined partial discharge detecting system of switch cubicle, the high frequency electric mutual inductance to different magnetic cores
The frequency response curve of device is studied and compared, and as a result shows that the response band of nickel-zinc ferrite transformer is wider, and
High frequency characteristics is more stable.
In the acoustoelectric combined partial discharge detecting system of switch cubicle provided by the utility model, the work of power frequency component collecting unit
With the reference synchronization phase being to provide needed for signal detection, zero cross detection circuit is provided with the power frequency component collecting unit,
For the zero crossing of synchronizing voltage to be marked, then the output token signal in a manner of impulse wave, with to local discharge signal
Phase recorded.
It is emphasized that the foregoing is only preferred embodiment of the present utility model, come for those skilled in the art
Say, made some improvements and modifications are regarded as guarantor of the present utility model on the premise of the utility model principle is not departed from
Protect scope.
Claims (3)
- A kind of 1. acoustoelectric combined partial discharge detecting system of switch cubicle, it is characterised in that：Kept pouring in including ultrasonic sensor, superelevation Sensor, HF current transformer, power frequency component collecting unit, conditioning filter and amplification unit, Multi-path synchronous acquisition system, control and Data analysis system；Wherein, described ultrasonic sensor, uhf sensor, HF current transformer are connected to conditioning The input of filter and amplification unit, the output end of the conditioning filter and amplification unit are connected to Multi-path synchronous acquisition system, the multichannel The output end of synchronous is connected to control and data analysis system；The power frequency component collecting unit is from transformer station 110V power supplys or PT secondary sides directly extract required power frequency component, and after nursing one's health filter and amplification unit, it is same to be connected to multichannel Acquisition system is walked, phase synchronized signal is provided to the acoustoelectric combined partial discharge detecting system of the switch cubicle；Described high-frequency electrical Current transformer is placed in switch cabinet bus side joint ground wire, and described uhf sensor is placed in the front window of switch cubicle.
- 2. the acoustoelectric combined partial discharge detecting system of switch cubicle according to claim 1, it is characterised in that：The hyperfrequency Sensor is microstrip-type sensor.
- 3. the acoustoelectric combined partial discharge detecting system of switch cubicle according to claim 1, it is characterised in that：The power frequency letter Zero cross detection circuit is provided with number collecting unit, for the zero crossing of synchronizing voltage to be marked, then the side with impulse wave Formula output token signal, is recorded with the phase to local discharge signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720435942.1U CN207096378U (en) | 2017-04-25 | 2017-04-25 | A kind of acoustoelectric combined partial discharge detecting system of switch cubicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720435942.1U CN207096378U (en) | 2017-04-25 | 2017-04-25 | A kind of acoustoelectric combined partial discharge detecting system of switch cubicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207096378U true CN207096378U (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720435942.1U Expired - Fee Related CN207096378U (en) | 2017-04-25 | 2017-04-25 | A kind of acoustoelectric combined partial discharge detecting system of switch cubicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108680843A (en) * | 2018-08-21 | 2018-10-19 | 广西电网有限责任公司电力科学研究院 | A kind of method for detection of partial discharge of switch cabinet based on Radio Transmission Technology |
| CN108710074A (en) * | 2018-08-21 | 2018-10-26 | 广西电网有限责任公司电力科学研究院 | A kind of partial discharge of switchgear detecting system based on Radio Transmission Technology |
| CN108919070A (en) * | 2018-06-07 | 2018-11-30 | 广西电网有限责任公司电力科学研究院 | A kind of partial discharge of switchgear detection system of Multi-source Information Fusion |
| CN108919069A (en) * | 2018-06-07 | 2018-11-30 | 广西电网有限责任公司电力科学研究院 | A kind of method for detection of partial discharge of switch cabinet of Multi-source Information Fusion |
| CN108957260A (en) * | 2018-07-10 | 2018-12-07 | 国网北京市电力公司 | Partial discharge detecting system and method, storage medium, processor |
| CN112345892A (en) * | 2020-09-21 | 2021-02-09 | 国网河南省电力公司安阳供电公司 | High tension switchgear partial discharge auxiliary detection device |
-
2017
- 2017-04-25 CN CN201720435942.1U patent/CN207096378U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108919070A (en) * | 2018-06-07 | 2018-11-30 | 广西电网有限责任公司电力科学研究院 | A kind of partial discharge of switchgear detection system of Multi-source Information Fusion |
| CN108919069A (en) * | 2018-06-07 | 2018-11-30 | 广西电网有限责任公司电力科学研究院 | A kind of method for detection of partial discharge of switch cabinet of Multi-source Information Fusion |
| CN108957260A (en) * | 2018-07-10 | 2018-12-07 | 国网北京市电力公司 | Partial discharge detecting system and method, storage medium, processor |
| CN108680843A (en) * | 2018-08-21 | 2018-10-19 | 广西电网有限责任公司电力科学研究院 | A kind of method for detection of partial discharge of switch cabinet based on Radio Transmission Technology |
| CN108710074A (en) * | 2018-08-21 | 2018-10-26 | 广西电网有限责任公司电力科学研究院 | A kind of partial discharge of switchgear detecting system based on Radio Transmission Technology |
| CN112345892A (en) * | 2020-09-21 | 2021-02-09 | 国网河南省电力公司安阳供电公司 | High tension switchgear partial discharge auxiliary detection device |
| CN112345892B (en) * | 2020-09-21 | 2024-05-31 | 国网河南省电力公司安阳供电公司 | Auxiliary detection device for partial discharge of high-voltage switch cabinet |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 Termination date: 20190425 |
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| CF01 | Termination of patent right due to non-payment of annual fee |