SMES控制器提高电力系统暂态电压稳定性  

Research on Fuzzy Logic-Controlled SMES for Voltage Transient Stability of Power System

作　　者：黄晓华[1,2] 叶莺[1,2] 张志丰[1] 肖立业[1] 

机构地区：[1]中国科学院电工研究所应用超导重点实验室,北京100080 [2]中国科学院研究生院,北京100039

出　　处：《稀有金属材料与工程》2008年第A04期289-292,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金项目(50225723)

摘　　要：针对电力系统的暂态电压稳定性问题,提出了串联于线路中的超导储能(SMES)装置并模糊控制的解决方案,通过基于电压源型变换器的SMES系统和电力系统综合暂态数学模型分析,基于模糊理论的模糊规则设计,在描述典型电压稳定性问题的单负荷无穷大系统和典型三机十节点系统中,进行了无SMES装置和装设SMES装置的对比仿真实验,并与常规PI控制的SMES仿真结果进行对比,验证了基于模糊控制策略的SMES可以更有效的提高电网的暂态电压稳定性。Superconducting Magnetic Energy Storage （SMES） is a power electronic based device with a superconducting coil that has the potential to bring essential functional characteristics to the utility transmission and distribution systems. This paper presents a new approach for fuzzy logic-controlled SMES to improve the transient voltage stability of electric power system. A mathematic SMES model based on voltage source inverter and integrated model of power system are adopted. A fuzzy controller is assigned. Load bus voltage is taken as the input signal to fuzzy controller. The fuzzy rule-bases are designed and explained. The single load infinite system and three-machine-ten-bus system are introduced. The validity of the suggested control strategies is confirmed by simulation tests. Its performance is compared to that of a conventional PI controlled SMES. From the results they are demonstrated that transient voltage stabilizing effect by mean of SMES was very significant. Also the performance of fuzzy controlled SMES is better than that of PI controlled SMES.

关 键 词：超导储能 暂态电压稳定性 模糊控制 电力系统 

分 类 号：TM712[电气工程—电力系统及自动化] TM917