杨刚;潘文霞;刘明洋;杨川;

• 1:河海大学能源与电气学院
• 2:国家电网公司扬州市供电公司

摘要(Abstract)：

含Crowbar保护的双馈风力发电机在模型上不同于普通异步发电机。首先,双馈风力发电机在转子侧连接着变流器;其次对转子侧变流器采用Crowbar保护。因此,在短路电流计算方法上,两者也必然有相应的差异。目前,在双馈风力发电机短路电流计算方面,我国采用的国家标准为GB/T15544.1《三相交流系统短路电流计算》。该标准中,没有考虑广泛采用的Crowbar电阻元件对短路电流的影响。为此,在研究建立含Crowbar保护的双馈风力发电机新模型的基础上,推导双馈风力发电机短路电流实用计算公式。文中还用PSCAD/EMTDC软件的精确模型仿真结果对提出的含Crowbar电阻的双馈风力发电机三相短路电流实用计算公式进行了验证,并比较了国家标准计算方法。研究表明:推导提出的含Crowbar保护的双馈风力发电机三相短路电流实用计算公式准确、方便,对风电场的电气安全设计具有重要意义。

关键词(KeyWords)： 双馈风力发电机;三相短路电流;Crowbar电阻;PSCAD/EMTDC;实用计算

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金资助项目(51377047)~~

作者(Author): 杨刚;潘文霞;刘明洋;杨川;

Email:

DOI: 10.13335/j.1000-3673.pst.2016.07.021

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