VBE系统保护性触发导致安顺换流站极Ⅱ闭锁分析及反措  

Analysis of the Blocking of Pole Ⅱ in Anshun Converter Station Triggered by the VBE Protective System and Related Counter-Measurement

作　　者：刘相枪[1] 国建宝[2] 王海军[2] 李书勇 彭德辉[2] 

机构地区：[1]中国南方电网超高压输电公司,广州510620 [2]中国南方电网超高压输电公司检修试验中心,广州510663 [3]南方电网科学研究院,广州510080

出　　处：《南方电网技术》2012年第6期27-30,共4页Southern Power System Technology

摘　　要：针对安顺换流站VBE系统保护性触发导致极Ⅱ闭锁事故,基于高肇直流系统控制原理,分析了故障过程,指出UdL分压器传感器故障是导致换流阀保护性触发的主要原因,换流变压器分接头采用Udio控制模式是间接原因。根据RTDS仿真结果提出了如下反措:将整流侧换流变压器分接头控制设为角度控制模式,以避免类似的故障。Aiming at the blocking of pole II in Anshun Converter Station triggered by the VBE protective system, and accordint to the control principle of Guizhou-Guangdong DC II, this paper analyzes the process of the first ESOF, and points out that the main cause of VBE firing is the sensor failure of the UdL voltage divider while the indirect one is the converter transformer tap using Udio control mode. Based on RTDS simulation results, a counter measure is proposed as following： to set the converter transformer tap changer control of the rectifier station as the angle control mode as to prevent the similar failure.

关 键 词：VBE系统 保护性触发 换流变压器分接头控制 

分 类 号：TM721.1[电气工程—电力系统及自动化]