祁韶直流开路模式下阀保护性触发问题研究  

Research on the protective triggering block under open-line mode of Qi-Shao UHVDC project

作　　者：徐浩 夏鑫珏 梁文武 张磊 刘海峰 欧阳帆 李辉 XU Hao;XIA Xin-jue;LIANG Wen-wu;ZHANG Lei;LIU Hai-feng;OUYANG Fan;LI Hui((1.Electric Power Research Institute,State Grid Hunan Electric Power Co.Ltd.,Changsha 410007,China;Power China Hebei Electric Power Engineering Co.Ltd.,Shijiazhuang 050031,China;Changsha Power Supply Branch,State Grid Hunan Electric Power Co.Ltd.,Changsha 410004,China)

机构地区：[1]国网湖南省电力公司电力科学研究院,湖南长沙410007 [2]中国电建集团河北省电力勘测设计研究院有限公司,河北石家庄,050031 [3]国网湖南省电力公司长沙供电分公司,湖南长沙410004

出　　处：《电力科学与技术学报》2019年第4期166-172,共7页Journal of Electric Power Science And Technology

基　　金：国家电网公司科技项目(52153218000H);国网湖南省电力公司科技项目(5216A0180001,5216A515002V)

摘　　要：该文结合祁韶特高压直流站系统调试和系统调试现场经验及录波数据,在全面剖析换流阀各种触发机制及开路工况下直流电压建立过程的基础上,详细分析换流阀在开路工况处于特殊触发角时的通断机制及相应阀臂电压的转变效果,深入研究OLT及类OLT模式下阀保护性触发动作的内在机制,并在此基础上梳理现场整改措施的有效性和可靠性,以期为相关电气从业人员提供有益参考。Based on the system debugging experience and record data of Qi-Shao UHVDC station, as well as the analysis of triggering mechanisms of converter valves and the DC voltage establishing process under open-line conditions, the on-off mechanism and the effect of valve arm voltage are analyzed for converter valve on the special firing angle in detail. Then the underlying mechanism of protective triggered actions in OLT and OLT like modes is studied. An effective on-site rectification measures are reviewed in this paper so as to provide useful reference for related electric workers.

关 键 词：特高压直流 开路试验 厂内试验 保护性触发 内在机制 

分 类 号：TM711[电气工程—电力系统及自动化]