基于Prony分析的电力系统FACTS设备参数优化  

FACTS parameters optimization based on Prony analysis

作　　者：王珂[1] 宋晓喆[1] 兴胜利[1] 

机构地区：[1]浙江大学电气工程学院,浙江杭州310027

出　　处：《机电工程》2013年第7期870-873,896,共5页Journal of Mechanical & Electrical Engineering

摘　　要：针对互联电力系统中存在的区域间低频振荡问题,提出了基于普罗尼(Prony)分析的柔性交流输电系统(FACTS)参数优化方法,以提高系统阻尼。将基于Prony分析的联络线传输功率振荡主导模式阻尼比作为优化问题的目标函数,并提出了模式幅值比约束条件,建立了FACTS参数优化模型。采用了改进PSO(粒子群算法)算法求解该非线性优化模型,其中为了防止算法陷入局部收敛,引入了混沌运算以提高种群的多样性。为了验证优化方法的有效性,采用IEEE 4机11节点系统进行了仿真实验。研究结果表明,安装了经过参数优化的静止无功补偿器后,系统的联络线传输功率暂态调整时间减少了44%以上,区域间低频振荡得到了有效抑制。Aiming at the inter-area low frequency oscillation of interconnected power system, an optimization method based on Prony analysis was proposed for the flexible alternative current transmission systems（FACTS） parameters optimization to improve the damping of the system. The dominant mode damping ratio derived from Prony analysis of the transmission power oscillation was introduced as the objective of the opti- mization model. The modes amplitude ratio constraint was also introduced and an optimization model was established. To solve the nonlinear optimization model, the improved particle swarm optimization （PS0） was adopted, in which to prevent the algorithm from being trapped into local optima, a chaos operation was introduced to improve the population diversity. To verify the effectiveness of the optimization method, IEEE 4-machine-11-bus system was adopted for simulation. The results indicate that after the installation of static var compensator（SVC） with optimized parameters, the transient adjustment time of the tie-line power flow oscillationis reduced for more than 44%, and the inter-ar- ea low frequency oscillation is depressed effectively.

关 键 词：区间低频振荡 普罗尼分析 FACTS 粒子群算法 混沌算法 静止无功补偿器 

分 类 号：TM712[电气工程—电力系统及自动化]