500kV黎平变电站 LW24-72.5型断路器主回路电阻超标研究

Research of main loop resistance exceed of LW24-72.5 circuit breaker in 500kV Liping substation

35kV低压电抗器作为500kV大型变电站调整500kV母线电压质量的主要手段，其作用至关重要。500kV黎平变电站中35kV低压电抗器在实际运行过程中，断路器动作次数频繁，运行工作环境差，存在着较大的安全隐患。据实例对LW24—72．5型断路器主刚路电阻值超标的主要相关因素进行了分析研究，并提出相应解决方案。

The 35kV low voltage reactor, as the principal means for adjusting the 500kV bus voltage quality in the 500kV large substation, its action is crucial. The on off action of 35kV low voltage reactor circuit breaker in 500kV Liping substation is very frequent, and its operational environment is so poor that there exists some serious hidden danger.According to the example of the main loop resistance value wasn＇t standard, the main related factors were analyzed, and the solution put forward.