Analysis and Countermeasures of Fengjing Station Converter Differential Protection Tripping
The optical current transformer （TA） is accuracy and stability of operation, directly affect the an important equipment of HVDC, its measurement safe operation of the converter station and the entire gird. With the continuous growth of the power transmission capacity, voltage level and protection requirements,the optical current transformer （TA） reflects the unique advantage. This article describes the application of TA in the secondary 500 kV HVDC project form the Three Gorges to Shanghai,it analyzes the converter differential protection tripping of the HVDC Pole I Protection and summarizes three reasons which can cause the Protection False Action. At the end of the article, it puts forward measures and proposals of signal anti-jamming.
NETL
NSTL
万方数据
