基于等效暂态能量函数分析的功率平衡紧急控制时间计算研究

Study on Time of Power Balance Emergency Control Based on the Analysis of Equivalence Transient Energy Function

在对功率平衡紧急控制后的暂态能量函数公式的推导的基础上,提出了系统紧急控制后的线性等效暂态能量的计算公式,并在同一坐标下通过比较持续故障导致的不平衡功率、故障切除导致的不平衡功率、功率平衡紧急控制导致的不平衡功率以及三者的等效暂态能量之间的关系,分析了不同故障状态下功率平衡紧急控制时间与暂态能量中的故障临界清除时间的关系,推导了其计算方法,同时对等效暂态能量计算的在不同故障状态下的现象进行了讨论和分析。

In this paper, based on the analysis of the transient energy function, the formula of the linear equivalent transient energy after system emergency control is proposed,The unbalance power caused by the durative fault, the remove of the fault and the power balance emergency control was compared in the same coordinate.The relationship of the power balance emergency control time and the fault critical clearing time of transient energy function is analyzed.The phenomenon of the equivalent transient energy under different fault states is discussed.