Structure Selection and Key Technology of 110kV Oil-immersed Shunt Reactor for Low-voltage Reactive Compensation in AC UHV Substation.

In special environment areas, such as high altitude or high seismic intensity areas, the dry-type air-core shunt Reactor has relatively poor environmental adaptability, and its use has certain limitations. Oil-immersed shunt reactor for low-voltage reactive compensation in AC UHV substation can be considered. The 110kV oil-immersed shunt reactor required by the UHV project has a certain challenge in design and manufacture due to its three-phase capacity of 240Mvar. Based on the 1000kV UHV AC project from Sichuan to Chongqing, this paper analyzes the feasibility of using 110kV oil-immersed shunt reactor; The single-phase structure and three-phase structure of oil-immersed shunt reactor are compared and analyzed, and the magnetic leakage and local overheating control, vibration and noise control of the product are simulated and analyzed.