摘要
以南方电网内各直流输电工程为例,简介了其直流电压和直流电流光测量系统的基本原理。探讨了光测量信号的传输回路,结合实际案例分析了运行中光测量系统暴露出来的一些典型异常及相应处理,如光电传感器故障引起的直流电压异常波动、光CT同轴电缆紧固方式的缺陷、光测量及相关总线系统的切换问题等。这些运行经验为未来直流输电工程的设计和实施、换流站乃至数字化变电站内光测量系统的运行维护都提供了有益的参考。
Taking the HVDC transmission projects of CSG as an example,the basic principles of DC voltage divider and DC current divider are introduced first; then the circuits of optic-electric measurements are discussed; at last,combined with the operational examples,the typical abnormities of optic-electric measurements,such as the abnormal fluctuation of DC voltage caused by optic fiber sensor fault,the defective fixture of the coaxial cable of DC current divider,and the switch of the optic-electric and bus system are discussed. All of those operational experiences are not only valuable to the design and implement of HVDC projects in the future,but also benefit to the operation and maintenance of optic-electric measurements used in converter station and even in digital substation.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2010年第17期147-152,共6页
Power System Protection and Control
关键词
光测量系统
直流输电系统
典型异常
optic-electric measurement
HVDC system
typical abnormity
