摘要
常规三端直流输电系统可提供更大的输送容量、更灵活多样化的运行方式,并能实现不同送端送电资源的合理调配。其中直流线路保护是常规三端直流与两端直流保护系统中差异化最大的部分,需适应三端直流输电系统灵活多样的运行方式、故障线路选线等关键问题。探讨禄高肇直流工程直流线路保护整体方案、保护配置及对三端直流输电系统关键问题的适应性分析等内容,最后根据工程情况提出运维建议。
The conventional three-terminal DC transmission system can provide larger transmission capacity,more flexible and diversified operation modes,and can realize reasonable allocation of power transmission resources at different transmission ends.Among them,the DC line protection is the most differentiated part of the conventional three-terminal DC and two-terminal DC protection systems.It needs to adapt to the key problems of the flexible and diverse operating modes of the three-terminal DC transmission system,faulty line selection and so on.The overall scheme,protection configuration and adaptability analysis of the key issues of the three-terminal DC transmission system of the Lugaozhao DC project were analyzed,and finally some O&M suggestions based on the project were put forward.
作者
陈蔚东
CHEN Weidong(Guangzhou Bureau,EHV Power Transmission Company,CSG,Guangzhou 510405,China)
出处
《电工技术》
2021年第3期146-148,共3页
Electric Engineering
关键词
三端直流输电工程
直流线路保护
保护判据
three-terminal DC transmission system
DC line protection
protection criterion
