| Fault diagnosis in neutral point indirectly grounded system basedon information fusion |
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| 引用本文： | 于飞,鞠丽叶,刘喜梅,崔平远,钟秋海. Fault diagnosis in neutral point indirectly grounded system basedon information fusion[J]. 哈尔滨工业大学学报(英文版), 2003, 10(4) |
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| 作者姓名： | 于飞 鞠丽叶 刘喜梅 崔平远 钟秋海 |
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| 作者单位： | Dept. of Automatic Control，Beijing Institute of Technology，Information and Control Engineering Institute，Qingdao University of Science and Technology，Information and Control Engineering Institute，Qingdao University of Science and Technology，Deep Space Exploration Research Center，Harbin Institute of Technology，Dept. of Automatic Control，Beijing Institute of Technology Beijing 100081，China，Qingdao 266042，China，Qingdao 266042，China，Harbin 150001，China，Beijing 100081，China |
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| 摘 要： | 0 INTRODUCTIONInChina ,neutralpointindirectlygroundingsystemismostwidelyappliedinpowernetworks .Accordingtothenationalpowerdepartmentstatisticaboutelectricalnetworkfaults ,thephase to groundfaultsaccountforthegreatestpart.Sincewhenthisfaultoccurs ,three phaselinevoltageisstillsymmetric ,thefaultcurrentpassingthroughthegroundpointiscomparativelylow ,thusdoesnotinfluencethelastingpowersupply ,thereforethepro tectiverelaysdon’ttripimmediately .However,becausethevoltageofthenormalphasesisin…
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Fault diagnosis in neutral point indirectly grounded system based on information fusion |
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| YU Fei. Fault diagnosis in neutral point indirectly grounded system based on information fusion[J]. Journal of Harbin Institute of Technology (New Series), 2003, 10(4) |
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| Authors: | YU Fei |
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| Affiliation: | Beijing Institute of Technology;Beijing Institute of Technology |
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| Abstract: | In neutral point indirectly grounded systems, phase-to-ground fault is putting new demands on fault diagnosis technology. Information fusion is applied to detect the phase-to-ground fault, which integrates several sources of information, including line current, line voltage, zero sequence current and voltage, and quintic harmonic wave component. This method is testified through the simulation of Matlab. Simulation results show that the precision and reliability of the detection has been greatly increased. |
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| Keywords: | information fusion fault diagnosis neutral point indirectly grounded system phase-to-ground fault |
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