一起故障解列装置异常动作行为的分析与对策  

Analysis and Measurement Against a Abnormal Operation of Fault Disconnection Device

作　　者：狄衡彬 查霖逢 李道文 张威 

机构地区：[1]宣城供电公司,安徽宣城242000

出　　处：《安徽电力》2011年第4期60-63,共4页Anhui Electric Power

摘　　要：由于故障解列装置故障过压解列功能判据存在缺陷,在35 kV线路末端,用户变压器发生接地故障时,装置误判为过电压,导致故障解列装置动作。通过对此故障现象的分析,提出完善过压解列功能判据的措施,以正确可靠的判别系统过电压,避免小电流接地系统单相接地故障时故障解列装置误动。Because of the disadvantage existing the criteria of over-voltage separation device, the separation performances when there are faults on the user transformer at the terminal of 35 kV lines. Through the analysis of the abnormal operation, the soluton is proposed that the criteria of over-voltage separation device is perfected to avoid maloperation of separation device when there is phase-to-ground fault in the small current grounded system.

关 键 词：小电流接地系统 单相接地故障 故障解列 过压判据 分析改进 

分 类 号：TM862[电气工程—高电压与绝缘技术]