电力系统自动化2024，Vol.48Issue(4)：142-149,8.DOI:10.7500/AEPS20230207005
基于静止无功发生器详细模型的机电暂态仿真适应性分析
Adaptability Analysis of Electromechanical Transient Simulation Based on Detailed Model of Static Var Generator
摘要
Abstract
Electromechanical transient simulation is an important tool for large-scale power system analysis.Existing electromechanical transient models for power electronic equipment generally have ideal characteristics of current source,which cannot reflect the impact of equipment stability and capacity constraints on system transient characteristics.In the background of power electronics dominated power systems,the above deficiencies reduce the simulation accuracy,which restricts the determination of power grid operation limit and renewable energy transmission capacity.In this paper,the unitary mathematical model and control system of static var generator(SVG)is derived based on the rotating coordinate frame and the corresponding electromechanical transient model is established.On the premise that the modeling accuracy is consistent with the electromagnetic transient model,the main differences between electromechanical transient simulation and electromagnetic transient simulation are compared based on the mode analysis method,which reveals the capability boundary and applicable scope of the electromagnetic transient simulation.The results show that the electromechanical transient simulation can reveal the power angle,frequency,and voltage stability characteristics related to fundamental-frequency power energy flow,but cannot reflect the resonance or broadband oscillation characteristics strongly related to power grid dynamics.关键词
静止无功发生器/机电暂态/模态分析/电力电子化电力系统Key words
static var generator(SVG)/electromechanical transient/mode analysis/power electronics dominated power system引用本文复制引用
梁倍华,谢欢,辛焕海,卢文清,李长宇,吴涛..基于静止无功发生器详细模型的机电暂态仿真适应性分析[J].电力系统自动化,2024,48(4):142-149,8.基金项目
国网冀北电力有限公司科技项目(52018K22001Q). This work is supported by State Grid Jibei Electric Power Company Limited(No.52018K22001Q). （52018K22001Q）
