基于电子电力变压器的电力系统低频振荡抑制策略

摘要

A kind of method of using additional damping controller of electronic power transformer (EPT)to improve damp-ing of power system is proposed,mathematic model for EPT is constructed and vector control strategy for EPT is studied.A control strategy of adding damping controller in active power control loop of EPT is proposed to improve damping of the power system and a method for designing parameters of the additional damping controller based on frequency response meth-od is studied.Parameters of the damping controller of EPT are designed in two-area and four-machine system and time-do-main simulation verifies validity of the damping controller.%提出了一种利用电子电力变压器的附加阻尼控制器来提高电力系统阻尼的方法，建立了电子电力变压器的数学模型，研究了电子电力变压器的矢量控制策略。提出在电子电力变压器有功控制环中增加阻尼控制器来提高系统阻尼的控制策略，研究了基于频率响应法的附加阻尼控制器参数设计方法，在两区四机系统中设计了电子电力变压器阻尼控制器的参数，并通过时域仿真验证了阻尼控制器的有效性。