直流融冰装置线路开路试验中电压阶跃现象分析  

Analysis on the DC Voltage Stepping Phenomenon in Open Line Tests of DC De-icers

作　　者：刘彬 许训炜[2] 张翔[2] 刘海彬[2] 沈刚[2] 

机构地区：[1]南方电网超高压输电公司柳州局,广西柳州545006 [2]南京南瑞继保电气有限公司,南京211100

出　　处：《南方电网技术》2012年第4期68-71,共4页Southern Power System Technology

摘　　要：在直流融冰装置OLT试验时出现了直流电压阶跃现象。基于直流融冰装置OLT控制与保护基本原理,以6脉动和12脉动直流融冰装置为例,对此现象进行分析,发现在如下两种情况下会使直流电压产生阶跃:一是在6脉动直流融冰装置交流进线相序接错的情况下;二是在12脉动直流融冰装置的D桥和Y桥触发脉冲电缆互相接反的情况下;从而根据这种直流电压阶跃现象可以定位这些故障。There were DC voltage stepping phenomenons in open line tests of DC de-icers. Based on the fundamental principle of OLT control and protection, and taking the 6-pulse DC de-icer and 12-pulse DC de-icer as examples, this paper analyzes the phenomenon and concludes it is due to two cases where the AC feed lines of 6-pulse DC de-icer connected with wrong phase order or where the control fire cables of the bridge D and bridge Y of 12-pulse DC de-icer connecting in reverse way, and thus these faults can be located according to the DC voltage stepping phenomenon.

关 键 词：直流融冰装置 线路开路试验 控制保护原理 故障分析 

分 类 号：TM755[电气工程—电力系统及自动化]