花园变电所LW6-500型断路器合闸电阻故障问题的分析及解决措施

Analysis of LW6-500 Circuit Breakers Closed Switch Resistance Fault in Huayuan Substation and Solving Measure

花园变电所是西宁供电局重要的枢纽变电所 ,共有 1 1台 330kV电压等级的断路器 (其中LW6 - 5 0 0型有 9台 ) ,开关的运行可靠性直接影响西宁供电局的安全生产。文章对 1 999年 330kV设备清扫、检修当中花园变电所LW6 - 5 0 0型开关 3月和 5月连续两次发生的合闸电阻不能正常投退问题做了详细介绍、分析 ,并针对此问题的解决提出了一些建议。

The Huayuan substation is an importance substation in QingHai power network , having 11 sets 330kV breakers which among of them are 9 sets LW6-500 type. The switch for reliably running effects safe producing. The paper detailedly introduces that closed switch resistance can not normally work for LW6-500 type 330kV switch on March and May 1999. Also some advice to solve the problem are given in this paper.