基于混合积分法的电力系统暂态稳定时域仿真

A mixed integral method of time domain simulation for power system

提出了一种新的将显式和隐式积分法混合使用的中小型电力系统时域仿真方法,该方法利用系统的特征根将系统分为刚性和非刚性两个不变子系统,在刚性空间内采用稳定性较好的隐式梯形积分方法,在非刚性空间内采用速度较快的显式前向欧拉法。新英格兰测试系统算例表明了该方法的有效性和实用性。

A mixture of explicit and implicit method is proposed to deal with time domain simulation for power system. According to eigenvalue the system is decoupled to two invafiant subsystems, the stiff and non-stiff, the explicit Euler method is used on stiff subspace and the implicit Trapezoidal is used on the non-stiff subspace. Taking the New England test system as an example, the effectiveness and advanced property of the presented method are proved.