中文摘要：

基于修正能量函数,提出了计算电力系统的暂态稳定裕度的灵敏度变分方法,通过限制灵敏度在单侧的有效性使得暂态稳定裕度及参数稳定极限的计算更加准确.该方法基于最优控制中的变分原理计算灵敏度,综合考虑了参数变分对动力学系统变量的影响.用该算法对我国山西电网进行了仿真验算,验证了其有效性和可靠性.与传统的轨迹灵敏度法相比,其计算效率提高了3倍.

英文摘要：

Based on corrected transient energy function, a new sensitivity method of transient stability margin relative to certain parameter of power systems was proposed. By imposing restrictions on only one side, the transient stability margin and limit parameters of transient stability were more accurate and reliable. Based on variation principle in optimal control theory, the effect of parameter＇s variation on variables of dynamic system were also considered in the method. The simulation test of the algorithm on Chinese Shanxi power system validated its effectiveness and the reliability. The computational efficiency of the proposed method was three times higher than that of traditional method.