Abstract:Compared with the common series reactor station arranged next to 500 kV substation, the independent series reactor station arranged in the middle of 500 kV line has its particularity from the selection of connection type to the design principle of power supply and grounding. Taking Sichuan 500 kV Jianpeng series reactor station for example, the main technical principles for 500 kV series reactor station arranged independently in the middle of line are discussed. Through the investigation and research of the built series reactor stations and combined with the related procedure specifications, and considering the requirements of operation and dispatching departments in power grid company, the main design principles of 500 kV independent series reactor station are proposed.