电网技术2011，Vol.35Issue(9)：60-65,6.
±660kV宁东—山东直流输电换流阀最小交流电压运行试验的关键应力
Key Stresses in Minimum AC Voltage Operational Tests of Thyristor Valves for ±660 kV HVDC Transmission Project From Ningdong to Shandong
摘要
Abstract
As a part of DC valve operational tests, the minimum AC voltage operation tests aims at examining the firing and extinction characteristics of converter valves under low AC voltage at valve side, so special requirement are put forward to testing devices. To implement test test purposes, it is the key to put forward concrete requirements to testing devices in the viewpoint of equivalence, and its presupposition is to determine the needed key stresses. Firstly, the basic structure an operational characteristic of DC converter valves are presented, and the transient processes of firing and extincting the converter valves under minimum AC voltage are analyzed; then the factors impacting the reliable operation of DC converter valves are pointed out and on this basis the key stresses under minimum AC voltage operational tests are summarized to provide the foundation for the synthesis of testing devices; finally, the results of minimum AC voltage operational tests of DC converter valves for ±660kV transmission project from Ningdong to Shandong are given. It is verified by the results that the minimum AC voltage operational tests, which is based on the key stresses and performed by synthetical method, can be fully equivalent to actual system and meet engineering demands, and it is economical and practicabel.关键词
直流输电工程/换流阀/运行试验/最小交流电压/关键应力/合成试验方法Key words
HVDC transmission project/converter valve/operational test/minimum AC voltage/key stresses/synthetic test method分类
信息技术与安全科学引用本文复制引用
杨俊,高冲,查鲲鹏,邱宇峰..±660kV宁东—山东直流输电换流阀最小交流电压运行试验的关键应力[J].电网技术,2011,35(9):60-65,6.基金项目
国家电网公司科学技术项目(SGKJ[2007] 107). （SGKJ[2007] 107）
