电力系统保护与控制2015，Vol.43Issue(14)：55-62,8.
具有低电压穿越能力的集群接入风电场故障特性仿真研究
Research on fault characteristics of grid-connected large scale wind farms with LVRT capability
摘要
Abstract
Based on the structure of wind turbines and its grid-connection principle, an improvedlow voltage ride through control scheme with "DC chopper + reactive compensation" of PMSG is proposed. An improvedlow voltage ride through control scheme with DC chopper and series dynamic braking resistor of DFIG is adopted. The grid-connection simulation models of PMSG and DFIG which have thecapability of low voltage ride through are built in the PSCAD/EMTDC. Based on " Technical rule for connecting wind farm to power system", the low voltage ride through capability are verified with voltage sag generator (VSG) for PMSG and DFIG. Combined with the accessing scheme of Dabancheng wind farm group, a simulation example of wind farm groups which all the PMSG and DFIG have the capability of low voltage ride through is built, the characteristics of wind farm groups during fault ride-through in condition of different fault types of tie line and voltage drop at wind farm outgoing line as well as voltage drop at tie line between the groups are researched. Results indicate that the voltage drop of grid-connected large scale wind farms outgoing line have influence on voltage and frequency for the adjacent wind farm and power system, the whole wind power system can be restored to steady state operationafter the failure.Research results contribute to analyze the running characteristic of grid-connected large scale wind farms and improve the receptivity ability for wind power.关键词
集群风电场/低电压穿越/故障特性Key words
grid-connected large scale wind farms/low voltage ride through/fault characteristics分类
信息技术与安全科学引用本文复制引用
齐尚敏,李凤婷,何世恩,刘光途,黄蓉..具有低电压穿越能力的集群接入风电场故障特性仿真研究[J].电力系统保护与控制,2015,43(14):55-62,8.基金项目
国家自然科学基金项目(51267019,51467019) （51267019,51467019）
新疆维吾尔自治区自然科学基金资助项目(2012211A002) （2012211A002）
