摘要
随着高比例可再生能源在电力系统中的广泛应用,可再生能源的波动性和随机性对电力系统静态电压稳定评估带来挑战,电力系统静态电压稳定域(static voltage stability region,SVSR)可以全面分析和监测电力系统电压稳定性,其关键是快速准确地构建稳定域边界。针对传统连续潮流法和非线性规划法计算量大的问题,提出一种基于SVSR边界拓扑性质的SVSR边界构建优化模型,根据边界连续且光滑的性质,由已知边界点通过预测-校正方法直接计算相邻边界点。在此模型基础上提出一种极限诱导分岔识别方法,构建考虑极限诱导分岔的SVSR边界。最后通过算例分析验证了所提方法的可行性和准确性。
With the widespread application of a high percentage of renewable energy in power systems,the volatility and randomness of renewable energy pose challenges for static voltage stability assessment of power systems.The static voltage stability region(SVSR)of power systems can comprehensively analyze and monitor the voltage stability of power systems.The key is to construct the stability region boundary quickly and accurately.To address the problems of large computational effort of the traditional continuous power flow method and nonlinear programming method,an SVSR boundary construction optimization model based on the topological properties of SVSR boundaries is proposed,in which the adjacent boundary points are directly calculated from known boundary points by a prediction-correction method based on the property that the boundaries are continuous and smooth.Based on this model,a limit induced bifurcation(LIB)identification method is proposed to construct the SVSR boundary considering LIB.Finally,the feasibility and accuracy of the proposed method are verified by case analysis.
作者
刘道兵
齐越
李世春
鲍妙生
郭营营
李珏岑
LIU Daobing;QI Yue;LI Shichun;BAO Miaosheng;GUO Yingying;LI Juecen(College of Electrical Engineering and New Energy,China Three Gorges University,Yichang 443002,China;Key Laboratory of Operation and Control of Cascade Hydropower Stations in Hubei Province,Yichang 443002,China)
出处
《中国电力》
CSCD
北大核心
2024年第4期118-129,共12页
Electric Power
基金
国家自然科学基金资助项目(51907104)。
关键词
电压稳定
静态电压稳定域
鞍结分岔
极限诱导分岔
voltage stability
static voltage stability region
saddle node bifurcation
limit induced bifurcation
