二滩水电厂500kV母线保护改造和运行分析

母线保护装置是保证电网安全稳定运行的重要设备,分析500 kV母线保护装置改造的基本要求,总结原集成电路型母线保护装置的配置、原理、运行情况和存在的问题,深入分析改造后两套微机型母线保护装置的配置、原理,最后结合新投运装置的技术特点总结投运以来的运行情况及注意事项。以期通过分析为母线保护装置改造和运行维护提供一定的借鉴意义。

Technical reform and operation analysis of 500 kV bus protection in Ertan Hydropower Plant

Bus protection device is the vital device to guarantee the safety and stability of the grid.This paper analyzed the basic technical reform requirements of the 500 kV bus protection device,summarized the protection configuration,principle,operation status and problems of the integrated circuit type bus protection device,extensively analyzed the configuration and theory of the two microcomputer type bus protection devices,and finally summarized the operation condition and matters needing attention based on the technique characteristic of the new devices since commissioning.It expects to offer some reference for technique reform and maintenance of bus protection.