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Ferroelectrics Volume 521, 2017 - Issue 1: The Joint Symposium of the Seventh International Conference of the Chinese Society of Micro-Nano Technology and Microsystems and Nanoengineering Summit 2016 (CSMNT2016 & MAN2016), Part I
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Articles

Linearity test method for non-contact ultrasonic and transient earth voltage PD detector

Chunguang SuoFaculty of Science, Kunming University of Science and Technology, Kunming, ChinaCorrespondence[email protected]
,
Xianshen DengFaculty of Science, Kunming University of Science and Technology, Kunming, China
,
Xiangyu TanElectric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming, China
,
Ke WangElectric Power Research Institute, Yunnan Power Grid Co., Ltd., Kunming, China
,
Lei ZhaoFaculty of Science, Kunming University of Science and Technology, Kunming, China
&
Tianwen LiFaculty of Science, Kunming University of Science and Technology, Kunming, China
Pages 44-52 | Received 31 May 2017, Accepted 31 Aug 2017, Published online: 13 Dec 2017
 
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ABSTRACT

At present, the detection technology of non-contact ultrasonic and transient earth voltage is widely used in the partial discharge detection of switchgear. The test result is directly related to the diagnosis and evaluation of the insulation state of electrical equipment. In order to characterize the accuracy of PD detection, it is proposed to use the terminal linearity calculation to analyze the linearity of the PD detector in the frequency band. Finally, the linearity test of the UltraTEV Plus PD detector is carried out by setting up a dedicated performance test platform in the laboratory, which verifies the effectiveness of the method and reflects the minimum linearity near the resonant frequency.

Funding

This work was financially supported by Electric Power Research Foundation funded project (2014KF9).

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