开关非全相运行跳位监视回路断开时的保护动作行为分析  

Analysis of Protection Action Behavior under the Condition of Breaker in Non-full-phase Operation and TWJ in Disconnected Status

作　　者：蒋连钿 黄鹏飞 黄超 刘斌 李海勇 梁杉 JIANG Liandian;HUANG Pengfei;HUANG Chao;LIU Bin;LI Haiyong;LIANG Shan(Power Dispatching Control Center of Guangxi Power Grid Co.,Ltd.,Guangxi Nanning 530023,China;Yulin Power Supply Bureau of Guangxi Power Grid Co.,Ltd.,Guangxi Yulin 537000,China)

机构地区：[1]广西电网有限责任公司电力调度控制中心,广西南宁530023 [2]广西电网有限责任公司玉林供电局,广西玉林537000

出　　处：《广西电力》2022年第6期64-73,共10页Guangxi Electric Power

摘　　要：电网复杂多变的故障,要求继电保护装置均能可靠动作,给继电保护专业运维提出了挑战。本文分析了开关非全相运行跳位监视回路断开时对保护的影响,描述了一起220 kV保护重合过程中开关瞬时脱扣造成的三相不一致事件,详细分析了本体三相不一致保护、电气量保护装置的动作行为,阐述了开关非全相跳位监视回路断开对保护的影响,并提出了三相不一致保护和零序电流保护配合上的整改建议,对继电保护整定及运维人员具有参考意义。The complex and ever-changing faults in power grid require reliable operation of relay protection devices,which poses a challenge to the operation and maintenance of relay protection.The influences of breaker in non-full-phase status and TWJ in disconnected status on relay protection are analyzed in this paper.A three-phase inconsistency event caused by instantaneous tripping of a breaker during the reclosing process of a 220 kV protection is described,and the action behavior of the three-phase inconsistency protection and electrical quantity protection device are analyzed in detail.The influences of breaker in non-full-phase status and TWJ in disconnected status on relay protection are described.Modification suggestions for the coordination of three-phase inconsistency protection and zero sequence current protection are proposed,which has reference significance for relay protection setting and operation and maintenance personnel.

关 键 词：开关非全相 单跳失败三跳 零序电流 保护配合 越级跳闸 

分 类 号：TM77[电气工程—电力系统及自动化]