35kV系统限流电抗器在变电站中的研究与应用

电抗器是用来限制电路中的短路电流和提高系统的残压,利用其电感特性。降低短路电流对电网的冲击,保护电网的稳定性。同时电抗器会在线路中损耗一部分电压和电能。老式的电抗器,由于压降较大,为了保证用户端的电压等级达标,就必须增加电源端的电压等级。当电源端的电压等级提高就加速了输电设备的绝缘老化,增加了故障发生率,所以需探讨限流电抗器在变电站中的安全应用。

Research and Application on 35kV System Current Limiting Reactor in Dashan 220kV Substation

Reactor is used to limit the short circuit current in the circuit and improve the residual voltage of the system. It can reduce the impact of short-circuit current on power grid and protect the stability of power grid. At the same time, the reactor will lose part of the voltage and power in the line. Due to the large voltage drop of the old reactor, the voltage level of the power supply must be increased in order to ensure that the voltage level of the user end reaches the standard. When the voltage level of power supply terminal is improved,the insulation aging of transmission equipment will be accelerated and the failure rate will be increased. Therefore, it is necessary to discuss the safe application of current limiting reactor in substation.