云广直流同极双阀组电压平衡控制分析及改进  

Analysis and Improvement of the Voltage-Balancing Control of Same-Pole Dual Valve Groups in Yunnan-Guangdong DC Project

作　　者：刘茂涛[1] 张志朝[1] 宋述波[1] 

机构地区：[1]中国南方电网超高压输电公司广州局,广州510405

出　　处：《南方电网技术》2014年第2期24-27,共4页Southern Power System Technology

摘　　要：云广±800 kV特高压直流输电工程采用同极双12脉动阀组串联结构,双阀组电压的平衡控制相当重要。分析了双阀组电压平衡控制的策略和实现过程,针对两起分接开关导致的电压控制异常进行了分析,并结合现场实际提出改进建议,对改善系统运行有一定帮助。Yunnan-Guangdong ± 800 kV DC transmission project is designed with dual 12-pulses valve groups by each pole,it＇s important to keep the DC voltage balance between two valve groups in the same pole. The paper analyzes the strategy and process of voltage balanced control,and two abnormal voltage control caused by tap changer. Based on maintenance at site,improvement proposal is given to improve the system＇s operation.

关 键 词：云广直流输电工程 双阀组 电压参考值 电压平衡控制 分接开关 

分 类 号：TM721.1[电气工程—电力系统及自动化]