广东电力2017，Vol.30Issue(12)：55-61,7.DOI:10.3969/j.issn.1007-290X.2017.012.009
考虑电压分布的风电场短路电流计算方法
Calculation Method for Wind Power Field Short-circuit Current Considering Voltage Distribution
郭家圣 1刘汉江2
作者信息
- 1. 河海大学能源与电气学院,江苏南京210098
- 2. 国网浙江省电力公司绍兴供电公司,浙江绍兴312000
- 折叠
摘要
Abstract
The most common connection mode of wind power generators in the wind power field is the kind of chain connection,but as making equivalent calculation on short-circuit current,influence of chain connection on short-circuit current is often neglected.Therefore,the paper firstly introduces IEC standard and calculation methods for short-circuit current of two kinds of wind power generators including permanent magnet synchronous generator (PMSG) and double fed induction generator (DFIG).Then on the basis of considering chain connection and generator-end voltage distribution,it makes use of characteristic relationship of voltage and current of these two kinds of generators when short-circuit fault occurs in short-circuit loop of the wind power field to work out generator-end voltage of each wind power generator and short-circuit current of the wind power field.By example comparison,it analyzes reasons for different calculation methods for short-circuit current of the wind power filed respectively by adopting IEC standard and considering voltage distribution,and verifies the proposed calculation method considering voltage distribution by using PSCAD/EMTDC software.Results indicate the calculation result from the method considering voltage distribution is more accurate and reliable than that from IEC standard,which means this method has better economy.关键词
直驱型风力发电机/双馈型风力发电机/短路电流/链式连接/电压分布Key words
permanent magnet synchronous generator/double fed induction generator/short-circuit current/chain connection/voltage distribution分类
信息技术与安全科学引用本文复制引用
郭家圣,刘汉江..考虑电压分布的风电场短路电流计算方法[J].广东电力,2017,30(12):55-61,7.
