基于相轨迹凹凸性的暂态不稳定性判别方法的分析比较

摘要

The transient instability identification and control based on the convexity and concavity of phase trajectory is a new method in recent years,which is expected to be applied in the emergency control of power system based on the PMU information.The key technical steps of real-time generator grouping and the necessity of correct use of segmented phase trajectory are emphasized when this method is applied to multimachine power system.In addition,some misunderstandings about its applications reported in related references are analyzed and the matters needing attention for the further comprehension and application of this method are deeply elaborated.%基于相轨迹凹凸性的暂态不稳定性判别与控制是近年来发展的新理论方法,有望应用于基于同步相量测量单元(PMU)信息的电力系统紧急控制.强调了该方法应用于多机系统时实时分群聚合的关键技术步骤以及正确使用相轨迹分段的必要性,分析了相关文献在应用该方法的过程中出现的问题,进一步对理解和应用该方法时的注意事项进行了详细深入的阐述.