10 kV配電線路旁路作業電磁暫態過程仿真計算研究
鄭傳廣，劉凱，劉庭，蘇梓銘
中國電力科學研究院，湖北 武漢 430074
摘 要： 為了給配電線路旁路作業的安全操作提供參考依據，基于10 kV 配電網絡線路旁路作業法ATP-EMTP 計算模型，對旁路作業法不同作業方式下的全部操作過程進行電磁暫態仿真計算，分別討論作業方式、線路長度、投切相角等因素對過電壓和過電流的影響。計算結果表明：人工分相操作方式與負荷開關三相同期操作方式下產生的過電壓、過電流水平相近，旁路條件下的帶負荷斷接線路是安全的。同時計算得出作業過程中空載旁路電纜投切操作和空載架空線路退出操作會產生較高幅值的過電壓和過電流。這些研究成果為旁路作業法的開展提供技術依據。
關鍵詞： 10 kV 配電線路；旁路作業；帶電作業
中圖分類號：TM726 文獻標識碼：A 文章編號：1007-3175(2013)03-0007-06
Simulative Calculation Research on Bypass Work Electromagnetic Transient Process of 10 kV Distribution Lines
ZHENG Chuan-guang, LIU Kai, LIU Ting, SU Zi-ming
China Electric Power Research Institute, Wuhan 430074, China
Abstract: In order to provide reference frames for safe operation of distribution lines bypass work, this paper carried out simulative calculation of electromagnetic transient for bypass operation method’s entire process under different operation modes and discussed impacts of work modes, circuit length and switching phase angles etc factors on over-voltage and over-current. The calculation results show that the over-voltage and over-current generated by artificial operation are the same as that of the load switch operation and on-load operating lines under bypass conditions are safe. Meanwhile, the switching operation of no-load bypass cable and the cutoff operation of no-load overhead lines will produce high-amplitude over-voltage and over-current. The research findings provide theoretical foundation for the development of bypass work.
Key words: 10 kV distribution line; bypass work; live-wire work
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