An algorithm for point of collapse method to compute voltage stability limit

This paper develops an algorithm for point of collapse method to compute the static voltage stability limit point. The point of collapse method, due to its special advantages, has attracted many attentions. However, as the dimension of its equations is almost twice the ordinary power flow equations and it is not easy to make use of the advantages of sparse matrix technique, it is difficult to apply the point of collapse method to large systems. An algorithm is proposed in this paper to solve these problems. Modifying a standard power flow program can develop the program. The performance of this method is found to be accurate and computational efficient.