基于联合补偿的电网牵引变负序补偿

摘要

以往的牵引变电能质量调节器采用就地单独补偿的方式，受设备容量的制约严重，并且治理成本很高。根据各牵引变产生的负序电流相位不同并可互相抵消的原理，提出了一种基于联合补偿的电网牵引变补偿技术，在降低治理成本的同时，达到对牵引供电系统的负序治理目标。仿真结果表明了联合补偿方法的正确性和有效性。%The previous power quality regulator of the railway traction substation uses the local single compensation, which is subject to the equipment capacity and costs a lot in the operation and management. As negative sequences of different traction substations have different phases,in this paper,a new compensation method for traction substations is proposed based on combined compensation. It can significantly reduce the cost and realize the objective for treating the negative sequences for the power supply system for train traction. The effectiveness and accuracy of the combined compensation method are verified by simulations.