基于ESA的风电场并网系统静态电压稳定性分析  

Analysis of static voltage stability of grid-connected wind farm system based on ESA

作　　者：张建平[1,2] 丁权飞[1] 

机构地区：[1]上海电力学院,上海200090 [2]上海交通大学,上海200240

出　　处：《电力系统保护与控制》2010年第21期33-38,共6页Power System Protection and Control

基　　金：上海市教委重点学科项目(第五期)G51304;上海市教委第三期本科教育高地建设项目资助;上海市教育委员会科研创新项目资助(11ZZ172;11ZZ171);上海市自然科学基金项目(09ZR1413000)

摘　　要：以特征结构分析法(ESA)为理论基础,探讨了基于异步风力发电机组的风电场接入系统后对系统电压稳定性的影响。采用最小模特征值和参与因子作为衡量指标,给出了系统的静态稳定裕度,指出了系统中最有可能发生电压不稳定的节点和区域。通过将风电场接入标准IEEE39节点测试系统并进行计算和分析,结果表明:风电场及其附近节点具有较强的参与特性,是影响系统电压稳定的关键区域;风电场接入后系统的静态稳定裕度降低,弱稳定区域扩大,在风力发电机机端装设补偿装置可以有效地改善系统的静态稳定裕度;风电场的接入降低了系统的负荷裕度,但是对系统达到极限负荷时的失稳区和失稳模式没有明显影响。On the basis of eigenvalue structure analysis method（E SA）,t he impact of integration of wind farm equipped with induction generator on the static voltage stability of power systems is studied.T aking the minimum module eigenvalues and the participation factors as indicators,t he static stability margin is clearly provided,as well as the most unstable node and region of the whole power system.A standard IEEE test system with 10 machines and 39 nodes including wind farm is applied for calculation and analysis.T he results show that the wind farm and its associated nodes have strong participation features,and they are the critical region which affects the system voltage stability ;t hat the integration of wind farm reduces the static stability margin and extends the weak stability region,and the installation of compensators in the terminal of wind turbine generator system can effectively improve the system＇s static stability margin;and that the integration of wind farm reduces the system＇s load margin,but it has no significant effects on the instability region and instability mode while the system reaches to its limit load.

关 键 词：风电场 静态电压稳定性 特征结构分析 静态稳定裕度 

分 类 号：TM712[电气工程—电力系统及自动化]