10 kV配電線路旁路作業(yè)電磁暫態(tài)過(guò)程仿真計(jì)算研究
鄭傳廣，劉凱，劉庭，蘇梓銘
中國(guó)電力科學(xué)研究院，湖北 武漢 430074
摘 要： 為了給配電線路旁路作業(yè)的安全操作提供參考依據(jù)，基于10 kV 配電網(wǎng)絡(luò)線路旁路作業(yè)法ATP-EMTP 計(jì)算模型，對(duì)旁路作業(yè)法不同作業(yè)方式下的全部操作過(guò)程進(jìn)行電磁暫態(tài)仿真計(jì)算，分別討論作業(yè)方式、線路長(zhǎng)度、投切相角等因素對(duì)過(guò)電壓和過(guò)電流的影響。計(jì)算結(jié)果表明：人工分相操作方式與負(fù)荷開(kāi)關(guān)三相同期操作方式下產(chǎn)生的過(guò)電壓、過(guò)電流水平相近，旁路條件下的帶負(fù)荷斷接線路是安全的。同時(shí)計(jì)算得出作業(yè)過(guò)程中空載旁路電纜投切操作和空載架空線路退出操作會(huì)產(chǎn)生較高幅值的過(guò)電壓和過(guò)電流。這些研究成果為旁路作業(yè)法的開(kāi)展提供技術(shù)依據(jù)。
關(guān)鍵詞： 10 kV 配電線路；旁路作業(yè)；帶電作業(yè)
中圖分類(lèi)號(hào)：TM726 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：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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