Jinghu Substation 220kV For Automatic Switch System Research And Application

In order to improve the power supply reliability, local grid often installed have alternate power auto-cast device. When power failure caused when the power input, satisfy busbar conditions for automatic switch will action, close to standby power outage busbar power supply. To prepare the switch device is how to properly control the retreating is worth to research and discussion, otherwise not only can not reach the effect, contrary meeting for normal power supply impact, even will expand scope blackout. For many types of automatic switch, and with the development of network, the electric grid Miocene problem arises, make influence for automatic switch retreating factor is very complex.Based on the substation dongguan PSB 220kV landscape lake as an example, this paper introduces 220kV alternate power auto-cast device's main function and working principle. Analyses of 220kV landscape lake substation prepared concrete cast way judge strategy, action logic, combining line maintenance circumstances need to prepare automatic switch device input corresponding overhaul linking piece operation required, analyzing device the hidden trouble in, and put forward the improvement scheme.