电网动态无功配置选址的修正轨迹灵敏度分析法

Analysis on Trajectory-correction Sensitivity Adapted to Dynamic VAR Configuration of UHV AC and DC Interconnected Power Grid

随着特高压交直流混联电网的深化发展,系统对电压及无功调节的要求越来越高,动态无功补偿装置的应用前景趋好,然而目前仍缺少实用的能指导动态无功配置选址的有效方法。为此,提出了一种基于静态灵敏度、时域仿真和轨迹灵敏度的动态分析与静态分析相结合的修正轨迹灵敏度分析方法,该方法可有效反映动态无功补偿装置对系统各节点电压的全局改善程度,为动态无功最优配置选址提供量化指标。最后,通过IEEE39母线系统和特高压交直流混联电网,验证了该方法的正确性与有效性。

With the deepening development of UHV AC and DC interconnected power grid,the requirement of power system for voltage and reactive power regulation is becoming higher and higher.As a result,the application of FACTS will hold out a cheerful prospect.However,there is still a lack of effective approaches which are suitable for engineering application and guiding dynamic reactive power compensation.A trajectory-corTection sensitivity analytical method is proposed accordingly,which is based on static sensitivity,time domain simulation and trajectory sensitivity,and combines the dynamic analysis and static analysis.The method can reflect the comprehensive effect of dynamic reactive compensation and provide a quantitative index for the optimization of the dynamic reactive power compensation.Through the instance of IEEE39 bus systems and UHV AC and DC interconnected power system,the rationality and validity of the method is verified.