CAJ | 학술논문

为了给配电线路旁路作业的安全操作提供参考依据,基于10 kV配电网络线路旁路作业法ATP-EMTP计算模型,对旁路作业法不同作业方式下的全部操作过程进行电磁暂态仿真计算,分别讨论作业方式、线路长度、投切相角等因素对过电压和过电流的影响.计算结果表明:人工分相操作方式与负荷开关三相同期操作方式下产生的过电压、过电流水平相近,旁路条件下的带负荷断接线路是安全的.同时计算得出作业过程中空载旁路电缆投切操作和空载架空线路退出操作会产生较高幅值的过电压和过电流.这些研究成果为旁路作业法的开展提供技术依据.
위료급배전선로방로작업적안전조작제공삼고의거,기우10 kV배전망락선로방로작업법ATP-EMTP계산모형,대방로작업법불동작업방식하적전부조작과정진행전자잠태방진계산,분별토론작업방식、선로장도、투절상각등인소대과전압화과전류적영향.계산결과표명:인공분상조작방식여부하개관삼상동기조작방식하산생적과전압、과전류수평상근,방로조건하적대부하단접선로시안전적.동시계산득출작업과정중공재방로전람투절조작화공재가공선로퇴출조작회산생교고폭치적과전압화과전류.저사연구성과위방로작업법적개전제공기술의거.
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 theo-retical foundation for the development of bypass work.