地铁变电站电源系统直流接地故障分析
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摘要
地铁变电站电源系统作为地铁供电系统的重要组成部分,是地铁安全稳定运行的动力能源和保障。针对地铁变电站电源系统直流接地故障的成因和危害,从气候及环境因素、设备状态等方面分析原因并制定预防措施。提出采用测量正负极母线对地电压、利用绝缘监控装置实时监控以及分段分部位拉路查找等查找故障点的方法及查找时的注意事项。
As a key part of the subway power supply system,the subway transformer substation power system is the power source and guarantee of stable and safe subway operation. In view of the contributing factors and hazards of the DC grounding fault of the subway transformer substation power system,the article analyzes the causes and develops preventive measures in view of climatic conditions and equipment status,etc. It suggests measuring voltages at positive and negative anodes of the bus,utilizing the monitoring data of the insulating monitoring device and troubleshooting along roads in sections and parts and other methods to find a fault point,with instructions to troubleshooting also given.
As a key part of the subway power supply system,the subway transformer substation power system is the power source and guarantee of stable and safe subway operation. In view of the contributing factors and hazards of the DC grounding fault of the subway transformer substation power system,the article analyzes the causes and develops preventive measures in view of climatic conditions and equipment status,etc. It suggests measuring voltages at positive and negative anodes of the bus,utilizing the monitoring data of the insulating monitoring device and troubleshooting along roads in sections and parts and other methods to find a fault point,with instructions to troubleshooting also given.
引文
[1]耿星.变电站直流系统接地故障查找与处理思考[J].广东科技,2013(14):79-80.
[2]颜丽渊.变电站直流系统接地故障查找与处理方法研究[C]//2011年云南电力技术论坛论文集.昆明:云南省电机工程学会,2011.
[3]王福刚.变电站直流系统接地故障的探讨[J].电气开关,2010(1):9-12.
[4]电力工程直流电源系统设计技术规程:DL/T 5044—2004.
[5]电力用直流电源监控装置:DL/T 856—2004.
[2]颜丽渊.变电站直流系统接地故障查找与处理方法研究[C]//2011年云南电力技术论坛论文集.昆明:云南省电机工程学会,2011.
[3]王福刚.变电站直流系统接地故障的探讨[J].电气开关,2010(1):9-12.
[4]电力工程直流电源系统设计技术规程:DL/T 5044—2004.
[5]电力用直流电源监控装置:DL/T 856—2004.