云广±800kV直流输电工程双12脉动串联阀组同时解锁特性分析

Characteristics Analysis of Deblocking Simultaneously Both 12-pulse Valve Groups in a Pole of Yunnan-Guangdong ± 800 kV DC Project

云广±800kV直流输电工程两端换流站均为双极配置,每极采用双12脉动阀组串联结构。双12脉动串联阀组同时解锁是该工程实现800kV额定直流电压运行的直接方式,因而成为现场系统调试中非常重要和备受关注的试验项目。基于现场调试结果,分析了不同解锁条件下双12脉动阀组同时解锁的特性,并对云广直流工程的双12脉动阀组同时解锁性能进行了评估。

The configuration of a pole with two 12-pulse valve groups in series is adopted by Yunnan-Guangdong ±800 DC project of two bypolar terminals,and it is a straight way to realize its rated DC voltage 800 kV through deblocking simultaneously both 12-pulse valve groups in a pole,and thus this type of deblocking tests is one of the most important testing items and in great concern during the on-site commissioning tests of the DC project.Based on the commissioning testing results,this paper analyzes the characteristics of deblocking simultaneously both 12-pulse valve groups in a pole under different operation conditions,and evaluates the performance of the DC project in terms of deblocking simultaneously both 12-pulse valve groups in a pole.