结合PCA的尺度不变特征变换(SIFT)算法，电力系统暂态稳定程序，可以进行暂态稳定计算,基于分段非线性权重值的Pso算法。- Combined with PCA scale invariant feature transform (SIFT) algorithm, Power System Transient Stability Program, can be transient stability, Based on piecewise nonlinear weight value Pso