LAPSE:2018.1078
Published Article
LAPSE:2018.1078
An Intelligent Sensor for the Ultra-High-Frequency Partial Discharge Online Monitoring of Power Transformers
Jian Li, Xudong Li, Lin Du, Min Cao, Guochao Qian
November 27, 2018
Ultra-high-frequency (UHF) partial discharge (PD) online monitoring is an effective way to inspect potential faults and insulation defects in power transformers. The construction of UHF PD online monitoring system is a challenge because of the high-frequency and wide-frequency band of the UHF PD signal. This paper presents a novel, intelligent sensor for UHF PD online monitoring based on a new method, namely a level scanning method. The intelligent sensor can directly acquire the statistical characteristic quantities and is characterized by low cost, few data to output and transmit, Ethernet functionality, and small size for easy installation. The prototype of an intelligent sensor was made. Actual UHF PD experiments with three typical artificial defect models of power transformers were carried out in a laboratory, and the waveform recording method and intelligent sensor proposed were simultaneously used for UHF PD measurement for comparison. The results show that the proposed intelligent sensor is qualified for the UHF PD online monitoring of power transformers. Additionally, three methods to improve the performance of intelligent sensors were proposed according to the principle of the level scanning method.
Keywords
field programmable gate array (FPGA), high-speed voltage comparator, intelligent sensor, level scanning method, online monitoring, partial discharge (PD), ultra-high-frequency (UHF)
Suggested Citation
Li J, Li X, Du L, Cao M, Qian G. An Intelligent Sensor for the Ultra-High-Frequency Partial Discharge Online Monitoring of Power Transformers. (2018). LAPSE:2018.1078
Author Affiliations
Li J: State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing 400044, China
Li X: State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing 400044, China
Du L: State Key Laboratory of Power Transmission Equipment and System Security and New Technology, Chongqing University, Chongqing 400044, China
Cao M: Yunnan Electric Power Research Institute, Kunming 650217, China
Qian G: Yunnan Electric Power Research Institute, Kunming 650217, China
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Journal Name
Energies
Volume
9
Issue
5
Article Number
E383
Year
2016
Publication Date
2016-05-19
Published Version
ISSN
1996-1073
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PII: en9050383, Publication Type: Journal Article
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LAPSE:2018.1078
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doi:10.3390/en9050383
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Nov 27, 2018
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Nov 27, 2018
 
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Calvin Tsay
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