计及双轴发电机模型的IEEAC法

IEEAC METNOD WITH TWO-AXIS GENERATOR MODELS

对于经典模型来说，扩展等面积法（ＥＥＡＣ）已被证明是一种非常快且极其精确的暂态稳定分析直接法。但对于某些工程应用来说，经典模型可能过于粗略。先前已开发成功的计及双轴发电机模型的算法是基于模型凝聚的ＳＥＥＡＣ（），对于非两群模式来说，其计算结果可能不够精确。本文成功地将ＳＥＥＡＣ（）改进为ＩＥＥＡＣ（），使计及双轴发电机模型的暂态安全快速分析的速度和精确性均满足规划和在线运行的要求。在中国东北网、华北网、浙江网及ＩＥＥＥ５０机系统的所有节点上，对ＩＥＥＡＣ（）法进行了穷尽方式的验证，并取得了非常满意的结果。

The Extended Equal Arca Criterion (EEAC) method has proved to be an accurate andextremely fast transient stability assessment method for the classical model. This model may betoo rough for some pratical engineering uses. As the recently developed method with two-axisgenerator models is only based on Model Aggregation (MA) EEAC, the results may be not veryaccurate for the incoherent two clusters mode, In this paper. the SEEAC (E_q’ ) method issuccessfully extended to the IEEAC ( E_q’)method. which may be acccpted by more utilities forboth planning and operation purposes. The proposed IEEAC ( E_q’)method has been extensivelytested for hundreds cases with faults at all buses in the IEEE system and three Chinese regionalsystem; and very promising results have been obtained. This generalization of IEEAC ( E_q’)method preserves its accuracy and extremely last speed.