Application Research Of Arc Suppression Coil In Jiangxi Power Grid

With the increase of distribution network system,especially the cable line,the capacitance current increases rapidly.In order to reduce the probability of arc grounding overvoltage and to reduce the damage caused by excessive voltage to the weak insulation equipment,the 10 kV and 35 kV systems of Jiangxi power grid are gradually changed from non grounded mode to arc suppression coil grounding mode.But due to the technical personnel of the power company of Petersen coil and a lack of understanding,lack of necessary measures to eliminate the operation and management of arc coil,in which part of the arc suppression coil in non normal working state and even long out of operation,the majority of the arc suppression coil in unmanned control and the unreasonable situation.In this paper,three common grounding modes in the actual operation of the power grid are analyzed,and the function and scope of the arc suppression coil are pointed out.According to the type of arc suppression coil used in Jiangxi power grid,five types of arc suppression coils are introduced in detail.The adjustment methods,advantages and disadvantages of various types of arc suppression coil are analyzed and compared.According to the Jiangxi power grid arc suppression coil of practical operation,exposed to the Petersen coil problems in operation are analyzed in detail,and find the causes of neutral grounding mode,eliminating selection and operation maintenance of arc suppression coil with in-depth research on all kinds of test,put forward from equipment selection,installation,commissioning,acceptance and operation maintenance solutions,in order to solve the various problems of fire extinguishing coil in the operation of Jiangxi power grid,for the future selection of arc suppression coil and coil operation and maintenance to provide guidance.