大规模交直流混联系统机电暂态分析线性化模型构建

Linearized Model Building for the Electromechanical Transient Analysis of Large-Scale AC/DC Hybrid Systems

中文关键词:交直流混联  线性化模型  机电暂态

keywords:hybrid AC and DC  linearization model  electro-mechanical transient

中文摘要:针对大规模交直流混联系统机电暂态分析的复杂性，构建了线性化模型。基于电力系统微分-代数方程框架，进行总体设计，确立了交流网络和直流网络的模型、动态元件和静态元件的数学模型，并明确了元件之间的耦合关系，最终生成混联系统线性化模型。仿真结果表明，所建立的线性化模型极大地降低了计算维度和复杂度，建模过程清晰且计算速度快，为解决大规模交直流混联系统的快速稳定性评估与优化控制问题提供了有效的理论模型和技术手段。

Abstract:Addressing the complexity of electromechanical transient analysis in large-scale alternating current（AC）/direct current（DC） hybrid power systems, this paper proposes a linearized model.Based on the differential-algebraic equation framework of power systems， an overall design is conducted， models for AC and DC networks are established， mathematical models for dynamic and static components are developed， coupling relationships between components are clarified， and ultimately a linearized model of the hybrid system is generated. Simulation results demonstrate that the linearized model established in this paper significantly reduces computational dimensionality and complexity， with a clear modeling process and high computational efficiency， thereby providing an effective theoretical model and technical solution for rapid stability assessment and optimal control of large-scale hybrid AC/DC systems.