用P-V分析法比较几种风电场静态等值建模  

Comparison of Static Equivalent Models of Wind Farm with P-V Analysis

作　　者：丁明[1] 马彪[1] 韩平平[1] 

机构地区：[1]合肥工业大学教育部光伏系统工程研究中心,安徽合肥230009

出　　处：《中国电力》2013年第1期26-29,共4页Electric Power

基　　金：国家科技支撑计划资助项目(2008BAA14B02);高等学校博士学科点专项科研新教师基金资助项目(2010JYXJ079)

摘　　要：以多台鼠笼异步发电机组构成的风电场为研究对象,分别用容量加权单机等值法、改进加权单机等值法、参数变换单机等值法以及变尺度降阶多机等值法对风电场运行特性进行等值建模,并在等值过程中考虑了风电场集电系统和变压器参数。用P-V分析法比较不同等值模型的风电场静态电压稳定性裕度,并考察各种模型表示的电压崩溃点与真实的电压崩溃点的逼近程度。结果表明,变尺度降阶多机等值法更适合风电场内机组参数一致的场合,参数变换单机等值法更适合风电场内机组参数不一致的场合。Focusing on wind farms consisting of squirrel-cage induction wind turbines,equivalent models of wind farm performances were established by capacity-weighted,improved capacity-weighted and parameters transformation stand-alone turbine equivalent methods and multi-machine equivalent methods with variable-scale and reduced-order,in which parameters of electrical collection systems and transformers in wind farms were considered.Through the P-V analysis,the above equivalent models were compared to the real and comprehensive models in terms of approximations of static voltage stability margins.It was concluded that multi-machine equivalent method performs better when wind turbine parameters in a winid farm are the same;while parameter transformation method is suitable to the situation of different parameters.

关 键 词：风电场 鼠笼异步风电机组 集电系统 电压稳定性 等值建模 

分 类 号：TM614[电气工程—电力系统及自动化]