The Identification of Internal and External Faults for±800kV UHVDC Transmission Line based on S-Transform and Information Entropy
The smoothing reactor and DC filter that form a boundary in the HVDC transmission system are applied between the inverter and the DC transmission line. Since this boundary presents the stop-band characteristic to the high frequency transient voltage signals, the high-frequency transient voltage signal caused by external faults through boundary will be attenuated and the signals caused by internal faults will be unchanged. The information entropy measurement can be used as a tool for feature extraction of the fault transients to classify the internal fault and the external fault in HVDC transmission system. This paper explores the new method of information theory based information entropy measurement for signal decomposition to classify the difference types fault.
component UHVDC transmission line boundary unit information entropy
Shu Hongchun Cao Pulin Tian Xincui
Faculty of Electrical Engineering Kunming University of Science and Technology Kunming, Yunnan Province, China
国际会议
2010 International Conference on Measurement and Control Engineering(2010年IEEE测量与控制工程国际会议 ICMCE2010)
成都
英文
449-452
2010-11-16（万方平台首次上网日期，不代表论文的发表时间）