变电站低压侧限流电抗器电抗值的选择

Selection of Reactance Value of Low Voltage Side Current Limiting Reactor in Substation

限流电抗器电抗值选择时既要将短路电流限制到规定值,又不能使电压损失过大。结合变电站扩建时主变压器10 kV侧限流电抗器的选择,介绍了短路电流计算等值电路、计算方法和电抗器电抗值的选择步骤。

When the reactance value of current limiting reactor is selected, the short circuit current should he limited within the specified value and the voltage loss should not be too much. Based on the selection of current limiting reactor at 10 kV side of main transformer during the extension of the substation, the equivalent circuit for short circuit current calculation, the calculation method and selection procedures of reactor＇s reactance value are introduced.