Study On Short Circuit Current Control Strategy Of Jiangxi Power Grid

With the development of Jiangxi grid,the implementation of interconnection planning and the gradual strengthening of the power grid,the short-circuit current level in Jiangxi grid is increasing year by year.All kinds of equipment in the power grid must meet the stricter requirements brought by the high short-circuit current level.At present,it has become an important problem in the planning,design and operation of Jiangxi grid.Thus it is necessary to check and calculate the short-circuit current level of Jiangxi grid in the near future and in the long term,and take restrictive measures to ensure the safe and stable operation of the power grid in accordance with the principle of combining distance with distance.In this paper,the data of Jiangxi grid operation in the past two years are used as the basic data,and the data are calculated and analyzed by PSASP software.The method of limiting short-circuit current is analyzed in detail,which provides theoretical basis for different short-circuit current limiting measures.The specific reasons for the increase of short-circuit current in the system are analyzed in depth,and the solutions are put forward.The results show that the short-circuit current can be confined to a safe range by adopting different operation modes and installing small impedance,which has guiding significance for practical operation.