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高压直流输电(HVDC)及灵活交流输电(FACTS)装置因其优良特性被广泛应用于现代电网中,但是其实际应用时间较短,加之其控制器的复杂性,使得对大规模交直流混联电网中FACTS装置之间及FACTS装置与HVDC间的交互作用的研究不够成熟和完善。文中以定量分析南方电网中FACTS装置之间以及FACTS装置与HVDC系统间的交互作用大小为目标,建立了含FACTS装置和HVDC系统的多机电力系统的线性化模型,并详细阐述了引入不同FACTS装置及直流系统时,控制变量、输出变量的选择及对代数方程的处理。接着对南方电网进行等值,利用该线性化模型推导出等值系统的传递函数,利用RGA方法找出FACTS装置之间以及FACTS装置与HVDC系统间的交互作用的大小。最后通过大扰动下的Prony分析验证了RGA分析结果的正确性。
HVDC (HVDC) and Flexible AC Transmission (FACTS) devices are widely used in modern power grid due to their excellent characteristics. However, the short practical application time and complexity of their controllers make large-scale AC-DC hybrid The research on the interaction between FACTS devices and FACTS devices and HVDC in the power grid is not mature and perfect. In order to quantitatively analyze the interaction between FACTS devices and FACTS devices and HVDC systems in China Southern Power Grid, a linearization model of multi-machine power system with FACTS devices and HVDC systems is established. Device and DC system, the control variables, the choice of output variables and the treatment of algebraic equations. Then, the equivalent of China Southern Power Grid is obtained, and the transfer function of the equivalent system is derived by using the linearization model. The RGA method is used to find out the interaction between FACTS devices and HVDC systems. Finally, the results of RGA analysis are verified by Prony analysis under large disturbance.