【摘要】 本文论述了基于网络结构保持的拓扑能量函数法评估多机系统暂态稳定域的数学模型与算法。主要论点是发电机用E_q′模型代替经典的E′模型,它对于首次摇摆稳定分析更为实用。同时在系统模型中计入了负载的电压特性,并有效地判定系统的暂态能量,运用位能边界曲面方法决定稳定域。用16机51结点简化的华东系统对上述方法的有效性进行了研究,仿真结果验证了所提论点的正确性。更多还原

【Abstract】 In this paper, a method for practical stability domain estimate of power system utilizing topological energy function (TEF) based on a structure preserving model (SPM) is presented. The main view set forth in this paper is that the generator representation using E’_q model (constant quadrature axis voltage behind transient reactance) instead of classical E’ model (constant internal voltage behind transient reactance) can be modeled more realistically for first swing stability analysis.Besides the generator model is treatd to accommodate one-axis E_q model, the arbitrarily voltage dependent loads are considered. It has been obtained in acerate identifying the system transient energy, especially the component due to voltage dependent active loads. The boundary of practical stability domain is determined using potential energy boundary surface (PEBS) method. The effectiveness of this method has been investigated with 16-generaton 51-bus reduced East China power system. The simulation study has been made to support the issue proposed.更多还原