含风电孤立中压微电网静态电压稳定性分析及改善策略  

Analysis and improvement of steady-state voltage stability for isolated medium-voltage microgrid with wind power

作　　者：赵卓立[1,2] 杨苹[1,3,4] 蔡泽祥[1] 周少雄[3,4] Timothy C.Green 雷金勇 

机构地区：[1]华南理工大学电力学院,广东广州510641 [2]帝国理工学院 [3]华南理工大学风电控制与并网技术国家地方联合工程实验室,广东广州511458 [4]华南理工大学广东省绿色能源技术重点实验室,广东广州511458 [5]南方电网科学研究院,广东广州510080

出　　处：《电力自动化设备》2015年第11期13-19,共7页Electric Power Automation Equipment

基　　金：国家高技术研究发展计划(863计划)项目(2014AA-052001);广东省科技计划项目(2012B040303005);广州市南沙区科技计划项目(2013P005);南方电网科学研究院科技项目(SEPRI-K143003);国家留学基金管理委员会资助联合培养博士研究生项目(201406150017)~~

摘　　要：分析了孤立微电网中双馈异步风力发电机组(DFIG)的功率电压特性,针对微电网不同运行方式约束,为改善含DFIG微电网的静态电压稳定性,提出了基于就地层储能稳定控制、DFIG快速变桨控制的静态电压稳定增强控制策略。基于PSCAD/EMTDC建立了微电网系统和稳定控制策略模型,研究结果表明,在不同运行方式下风速扰动时,提出的增强控制策略能有效增强微电网的静态电压稳定性,确保微电网的安全稳定运行。The power-voltage characteristics of DFIG（Doubly-Fed Induction Generator） with wind turbine in the isolated microgrid are analyzed and a strategy based on the local energy-storage stability control and fast pitch-angle control is proposed according to the constraints of different operating modes of microgrid with DFIG to enhance its steady-state voltage stability control. A model of mierogrid system with stability control strategy is built based on PSCAD/EMTDC and the results of research indicate that,the proposed strategy enhances effectively the steady-state voltage stability of microgrid under the wind disturbances in different operating modes to guarantee its safe and stable operation.

关 键 词：微电网 风电 电压稳定 双馈异步发电机 储能 运行方式 

分 类 号：TM712[电气工程—电力系统及自动化] TM614