CN203178422U - Partial discharge measuring system - Google Patents

Partial discharge measuring system Download PDF

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Publication number
CN203178422U
CN203178422U CN 201320153012 CN201320153012U CN203178422U CN 203178422 U CN203178422 U CN 203178422U CN 201320153012 CN201320153012 CN 201320153012 CN 201320153012 U CN201320153012 U CN 201320153012U CN 203178422 U CN203178422 U CN 203178422U
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CN
China
Prior art keywords
partial discharge
digital oscilloscope
measuring instrument
measurement
circuit
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Active
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CN 201320153012
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Chinese (zh)
Inventor
常鹏
华月申
孙阳盛
殷立军
都泓蔚
张华�
张浩杰
张思平
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SHANGHAI SHENJIE ENVIRONMENTAL PROTECTION TECHNOLOGY DEVELOPMENT Co Ltd
State Grid Corp of China SGCC
Shanghai Municipal Electric Power Co
Original Assignee
SHANGHAI SHENJIE ENVIRONMENTAL PROTECTION TECHNOLOGY DEVELOPMENT Co Ltd
State Grid Corp of China SGCC
Shanghai Municipal Electric Power Co
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Application filed by SHANGHAI SHENJIE ENVIRONMENTAL PROTECTION TECHNOLOGY DEVELOPMENT Co Ltd, State Grid Corp of China SGCC, Shanghai Municipal Electric Power Co filed Critical SHANGHAI SHENJIE ENVIRONMENTAL PROTECTION TECHNOLOGY DEVELOPMENT Co Ltd
Priority to CN 201320153012 priority Critical patent/CN203178422U/en
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Abstract

The utility model relates to a partial discharge measuring system, which comprises a partial discharge detector, an ultrahigh frequency sensor, a voltage phase measuring instrument, a first digital oscilloscope and a second digital oscilloscope, wherein the first digital oscilloscope is in circuit connection with the ultrahigh frequency sensor, and the second digital oscilloscope is in circuit connection with the partial discharge detector, the ultrahigh frequency sensor, the first digital oscilloscope and the voltage phase measuring instrument. The partial discharge measuring system provided by the utility model can realize detection and positioning for partial discharge, is high in anti-interference capacity and high in sensitivity. The non-contact measuring mode is safer for secondary equipment and personnel, the structure of the system is simple, and the system is especially suitable for online monitoring, thereby having obvious advantages compared with other methods.

Description

The measurement of partial discharge system
Technical field
The utility model relates to a kind of measurement of partial discharge system.
Background technology
All-closed gas insulating combined switch equipment (English be called for short GIS) have floor area little, be subjected to external environmental condition to influence little, reliability advantages of higher, in China's urban distribution network, use in a large number.Particularly along with the acceleration of China's economic development and urbanization process, the demand of GIS equipment sharply increases.The GIS that present China puts into operation has in early days entered the middle and later periods in life-span, the equipment operation has entered the multiple phase of fault, and the GIS equipment producer overload that also causes at a high speed of power network development is produced, on-the-spot installation condition also is difficult to effectively be ensured, has increased newly the put into operation out of order probability of GIS equipment and risk widely.Produced huge contradiction between the requirement that improves day by day to electric network reliability of this and the current whole society.The safe and reliable operation that the online detection that an urgent demand development of operation power department is advanced and Condition-Based Maintenance Technology ensure high voltage electric power equip ment.
Office is placed on the measurement data of line, off-line monitoring and checkout equipment as the important indicator of judging the primary equipment operating condition, its correctness has directly influenced the correct judgement to the primary equipment operating condition, there is the shelf depreciation problem in primary equipment, and on-line monitoring equipment fails to find or the data monitored precision is lower, fail to cause that the technician enough payes attention to, often cause the little hidden danger of primary equipment to develop into the accident of primary equipment; There is not the shelf depreciation problem in primary equipment, and the on-line monitoring equipment abnormal data that takes place frequently, misleading the technician carries out unnecessary interruption maintenance, certainly will cause the waste of human and material resources, financial resources, and also stability and the reliability to operation of power networks caused influence.
The utility model content
A kind of measurement of partial discharge system that the utility model provides, can realize detection and location to shelf depreciation, antijamming capability is strong, highly sensitive, this non-contacting metering system is safer for secondary device and personnel, system architecture is simple, be particularly suitable for on-line monitoring, thereby have remarkable advantages than other method.
In order to achieve the above object, the utility model provides a kind of measurement of partial discharge system, and this system comprises second digital oscilloscope that first digital oscilloscope, circuit that Partial discharge detector, uhf sensor, voltage-phase measuring instrument, circuit connect this uhf sensor connect this Partial discharge detector, uhf sensor, first digital oscilloscope and voltage-phase measuring instrument.
This system also comprises the Partial Discharge Detection impedance that circuit connects described Partial discharge detector.
This system also comprises the computing machine that connects this first digital oscilloscope and second digital oscilloscope by the gpib bus circuit.
The utility model can be realized the detection of shelf depreciation and location, antijamming capability is strong, highly sensitive, and this non-contacting metering system is safer for secondary device and personnel, and system architecture is simple, be particularly suitable for on-line monitoring, thereby have remarkable advantages than other method.
Description of drawings
Fig. 1 is structured flowchart of the present utility model.
Embodiment
Following according to Fig. 1, specify preferred embodiment of the present utility model.
As shown in Figure 1, the utility model provides a kind of measurement of partial discharge system, this system comprises Partial Discharge Detection impedance 101, the Partial discharge detector 102 that connects this Partial Discharge Detection impedance 101, uhf sensor 103, voltage-phase measuring instrument 107, circuit connects first digital oscilloscope 104 of this uhf sensor 103, circuit connects this Partial discharge detector 102, uhf sensor 103, second digital oscilloscope 105 of first digital oscilloscope 104 and voltage-phase measuring instrument 107, and the computing machine 106 that connects this first digital oscilloscope 104 and second digital oscilloscope 105 by the gpib bus circuit.
Discharge signal detects by Partial Discharge Detection impedance 101 in described Partial discharge detector 102, and signal outputed to second digital oscilloscope 105, uhf sensor 103 also detects discharge signal simultaneously, and signal outputed to first digital oscilloscope 104 and second digital oscilloscope 105, voltage-phase measuring instrument 107 outputs to second digital oscilloscope 105 with reference voltage signal, first digital oscilloscope 104 and second digital oscilloscope 105 output to computing machine 106 with signal waveform, and computing machine 106 is by waveform failure judgement problem.
In the present embodiment, the DST-4 type that Partial discharge detector 102 adopts Chinese DianKeYuan to produce, the broadband logarithm helical antenna that uhf sensor 103 adopts North China Electric Power University to develop voluntarily, model is QH-PDE-G, phase signal is taken out by the measurement coil of testing transformer.The model of first digital oscilloscope 104 is the LC574A that U.S. power section produces, analog bandwidth 1GHz, and high sampling rate is 4GS/s, mainly is responsible for gathering the original ultrahigh-frequency signal that shelf depreciation produces.The model of second digital oscilloscope 105 is the YOKOGAWA that Japanese Henghe company produces, analog bandwidth 100MHz, the highest real-time sampling rate 500MS/s, main pulsed light current signal and the operating frequency phase signal of being responsible for gathering conventional shelf depreciation.Computing machine 106 is by GPIB(general purpose interface bus General Purpose Interface Bus) bus links to each other with second digital oscilloscope 105 with first digital oscilloscope 104, and with the automatic collection of test data and analyzing and processing, the PRPD spectrogram that specifically comprises Partial discharge detector 102 extracts, the FFT frequency domain conversion of superfrequency shelf depreciation, and the essential characteristic of partial-discharge ultrahigh-frequency and conventional pulsed current signal is extracted.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute all will be apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.

Claims (3)

1. measurement of partial discharge system, it is characterized in that this system comprises second digital oscilloscope (105) that first digital oscilloscope (104), circuit that Partial discharge detector (102), uhf sensor (103), voltage-phase measuring instrument (107), circuit connect this uhf sensor (103) connect this Partial discharge detector (102), uhf sensor (103), first digital oscilloscope (104) and voltage-phase measuring instrument (107).
2. measurement of partial discharge as claimed in claim 1 system is characterized in that this system also comprises the Partial Discharge Detection impedance (101) that circuit connects described Partial discharge detector (102).
3. measurement of partial discharge as claimed in claim 1 system is characterized in that this system also comprises the computing machine (106) that connects this first digital oscilloscope (104) and second digital oscilloscope (105) by the gpib bus circuit.
CN 201320153012 2013-03-29 2013-03-29 Partial discharge measuring system Active CN203178422U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320153012 CN203178422U (en) 2013-03-29 2013-03-29 Partial discharge measuring system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320153012 CN203178422U (en) 2013-03-29 2013-03-29 Partial discharge measuring system

Publications (1)

Publication Number Publication Date
CN203178422U true CN203178422U (en) 2013-09-04

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Application Number Title Priority Date Filing Date
CN 201320153012 Active CN203178422U (en) 2013-03-29 2013-03-29 Partial discharge measuring system

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CN (1) CN203178422U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103197213A (en) * 2013-03-29 2013-07-10 国家电网公司 Partial discharge measurement system
CN103675615A (en) * 2013-11-13 2014-03-26 国家电网公司 Ultra-wideband detection device for realizing zinc oxide arrester partial discharge detection and method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103197213A (en) * 2013-03-29 2013-07-10 国家电网公司 Partial discharge measurement system
CN103675615A (en) * 2013-11-13 2014-03-26 国家电网公司 Ultra-wideband detection device for realizing zinc oxide arrester partial discharge detection and method thereof

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