电力系统小干扰稳定性研究

Study of The Power System Small Disturbance Stability

本文论述了电力系统小干扰稳定性分析中的几个问题,包括小干扰稳定性判别定理:小干扰稳定性判据和潮流解仔在性的关系;电压稳定性和潮流解存在性的关系。提出了求解小干扰稳定边界附近临界潮流解的数值延拓法以及小干扰稳定性分析计算方法。算例的结果与电力系统实际试验结果是一致的。

Several problems of the power system small disturbance (SD) stability are discussed in the paper. These problems are the characterization of the power system SD stability, the relationship between the SD stability and the load flow Jacobian matrix using Newton's method and the relationship between the voltage stability and the Jacobian matrix. The continuation method for solving power system load flow is proposed. The new method can be used to solve the load flow in the nearby bound of SD stability.some problems in practical computation are discussed and some numerical examples are given.