摘要
介绍了特高压直流输电系统中顺序控制的概念及功能,模式转换的顺序控制,换流阀层的顺序控制,极层的顺序控制,双极层的顺序控制。根据特高压直流输电工程换流站运行的特点,分别列出换流阀层、极层、双极层的开关配置。结合特高压直流输电系统实验及工程现场运行情况,分析了顺序控制的实现条件,换流站开关的联锁逻辑,以及系统间的配合。向家坝—上海±800kV特高压直流输电工程成功投运,证明顺序控制能够保证换流站内开关的安全、可靠操作,输电系统的平稳起停,以及各种控制模式之间的平稳切换。
The concept and function of sequence control, mode shift sequence control, and sequence control at valve level, pole level, and bipole level in UHVDC transmission system are described. The switch configurations of valve level, pole level, bipole level are listed according to the operation characteristics of UHVDC project converter station. The realization condition of sequence control, interlock logic of converter station switch, coordination among other systems are analyzed according to UHVDC system testing and project site operation condition. Xiangjiaba-Shanghai ~ 800 kV UHVDC transmission project is put into operation successfully, and the sequence control is confirmed to ensure a safe and reliable operation of the switch in the converter station, and smooth start-stop of transmission system and switching among kinds of control modes.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2011年第23期30-33,38,共5页
Power System Protection and Control
