基于扩展等面积准则法的电力系统暂态稳定分析

Analysis on Extended Equal Area Criterion Method Based Transient Stability

分析PCOI（惯量中心）映射和EEAC（扩展等面积法则）算法的原理和方法，提出EEAC算法的模型适应性和精度与所采用的数值积分法相同。采用EEAC算法对6机系统进行系统暂态稳定分析，得到量化的稳定信息，其量化计算的结果可以定量地评估系统的动态安全水平，使得各种运行工况和各种控制操作对稳定性影响的定量比较成为可能。

By analysing the method and principle about PCOI mapping and EEAC algorithm, it is found that the model compatibility and the precision of the EEAC algorithm are the same to numerical integration method used. The paper uses the EEAC algorithm to carry out the transient stability analysis to 6 Machine Systems, and obtained the quantified stable informa- tion. The result of quantification can assess quantitatively the dynamic safety level of the system. Therefore, we can compare quantitatively the influence on the stability brought by all kinds of operating mode and control operation.