基于Gramian的电力系统FACTS元件交互影响分析  

Using Gramian to analyze the mutual influence of power system with FACTS

作　　者：杨伟[1] 曲艺[1] 顾明星[1] 

机构地区：[1]南京理工大学动力工程学院,江苏南京210094

出　　处：《电力系统保护与控制》2011年第22期30-34,共5页Power System Protection and Control

摘　　要：在含有多个FACTS控制器的复杂电力系统中,各控制器间往往会存在交互影响,从而导致FACTS控制失稳。以四机两区域的互联电力系统为对象,对含SVC和TCSC的四机两区域电力系统进行了研究。运用基于Gramian的交互分析方法,对系统电气距离和负荷不同情况下FACTS元件之间的交互影响进行了分析,结果表明:随着FACTS控制器间的电气距离减小或系统负荷的增加,SVC和TCSC间的交互影响都更加剧烈,使控制器的动态性能变差,甚至有可能影响到系统的稳定性。通过时域仿真验证了基于Gramian的电力系统FACTS元件交互影响分析方法的正确性。The interaction often exists between the controllers in the complex power system with multiple FACTS controllers, which leads to FACTS control instability. Taking a fourmachine two-area interconnected power system for an object, the four-machine two-area power system including SVC and TCSC is studied. Using the Gramian based interaction analysis method, and under different circumstances of electrical distance and load on the system, the interaction between FACTS devices is analyzed, and the results show that with the decrease of electrical systems or increase of system load between FACTS controllers, the interaction between SVCand TCSC becomes more severe, which makes dynamic performance of the controller worse and even might affect the system stability. Through time domain simulation, it verifies the validity of interaction analysis method of Gramian-based power system FACTS device.

关 键 词：灵活交流输电技术 交互影响 协调控制设计 格兰姆行列式 仿真 

分 类 号：TM711[电气工程—电力系统及自动化]