王风光,高姗姗,丁杰,龚啸,吕航,赵国勇,徐泽
WANG Fengguang,GAO Shanshan,DING Jie,GONG Xiao,LYU Hang,ZHAO Guoyong,XU Ze

• 1:南京南瑞继保电气有限公司

摘要(Abstract)：

刀闸位置的输入直接影响母线差动保护动作行为的选择性和可靠性。首先，介绍了刀闸位置异常对母线差动保护动作行为的影响以及差动保护对于刀闸位置异常支路的两种跳闸逻辑。然后，分析了刀闸误开入、刀闸开入丢失和刀闸开入接反情况下差动保护的动作行为，比较了两种跳闸逻辑的优劣。最后，提出了刀闸位置校正逻辑，综合利用支路断路器位置、母联开关位置、母线互联压板以及大小差电流的幅值和相位关系来实现刀闸位置校正。仿真试验表明：刀闸位置校正逻辑简单可靠，并且不受刀闸位置异常支路数量和负荷电流大小的影响，现场适应性强。
The input of disconnector positions directly affects the selectivity and operation reliability of busbar differential protection. First, the impact of disconnector position anomalies on the operation of busbar differential protection is introduced, along with two tripping logics for feeders with anomalous disconnector positions. Then, the operation of differential protection under conditions of false disconnector input, missing disconnector input, and reversed disconnector input is analyzed, and the advantages and disadvantages of the two tripping logics are compared. Finally, a disconnector position correction logic is proposed, which utilizes circuit breaker positions, bus-tie switch status, busbar interconnection plate, and the magnitude and phase relationships of differential currents to achieve position correction. Simulation tests demonstrate that the disconnector position correction logic is simple and reliable, unaffected by the number of feeders with position anomalies or the magnitude of load current, indicating strong field adaptability.

关键词(KeyWords)： 刀闸位置;差动保护;跳闸逻辑;位置校正逻辑;断路器位置
disconnector position;differential protection;tripping logic;disconnector correction logic;circuit breaker position

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划（2021YFB2401101）

作者(Author): 王风光,高姗姗,丁杰,龚啸,吕航,赵国勇,徐泽
WANG Fengguang,GAO Shanshan,DING Jie,GONG Xiao,LYU Hang,ZHAO Guoyong,XU Ze

DOI: 10.19585/j.zjdl.202512004

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