内桥接线变电站检修二次回路危险点分析及预控

变电站内桥接线因其诸多的优点，在35～110kV电网中被广泛采用，但由于存在二次回路联跳运行间隔，给变电站检修工作也带来一定的危险点。为此，以一典型内桥接线变电站为例，对继电保护及二次回路方面存在的危险点进行着重分析，发现二次回路危险点与具体工作内容和一次运行方式有关。相同的工作内容。在不同的运行方式下有不一样的危险点；同样，不同的工作内容，在相同的运行方式下也有不一样的危险点。因此，根据变电站各种检修内容和运行方式．针对其中二次回路方面的危险点．制定出合理的预控措施.

Analysis and Pre-control of Dangerous Points in Secondary Circuit for Substation Maintenance of Internal Bridge Connection

Internal bridge connection of substation has been widely used in 35 ~ 110 kV power grids because of lots of advantages,but the existence of inter-tripping operation interval in the secondary circuit can result in certain dangerous points in the substation maintenance.Therefore,taking example of a typical substation with internal bridge,the dangerous points in relay protection and secondary circuit are analyzed emphatically.It is found that the dangerous points of secondary circuit have something to do with ...