| 引用本文: | 何山,王维庆,张新燕,等.双馈风力发电机多种短路故障电磁场仿真研究[J].电力系统保护与控制,2013,41(12):41-46.[点击复制] |
| HE Shan,WANG Wei-qing,ZHANG Xin-yan,et al.Simulation study of multiple short-circuit fault electromagnetic field about DFIG in wind power[J].Power System Protection and Control,2013,41(12):41-46[点击复制] |
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| 双馈风力发电机多种短路故障电磁场仿真研究 |
| 何山1,2,王维庆1,2,张新燕1,2,王海云1,2,陈洁1,董新胜3,谷雪松4 |
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| (1.新疆大学电气工程学院，新疆 乌鲁木齐 830049; 2.可再生能源发电与并网技术教育部工程研究中心（新疆大学），新疆 乌鲁木齐 830049;3.新疆电力科学研究院，新疆 乌鲁木齐 830011;4.华中科技大学光学与电子信息学院，湖北 武汉 430074) |
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| 摘要: |
| 为准确分析双馈风力发电机多种故障发生时的电磁特性，为故障预测、结构优化和保护提供方法和数据，针对双馈发电机，给出一种用于多工况运行时多种短路故障发生的分析方法。先利用有限元方法建立发电机全区域模型，计算电磁场，然后用得到的数据编程进行傅里叶级数分解得出磁密分布频谱。利用该方法对1.5 MW发电机建模，对超同步、亚同步及同步正常运行状态及典型的定子部分绕组匝间及单相短路故障的电磁场计算，并进行了分析对比。仿真结果表明，该方法能够根据磁密云图的波形以及频谱图中高次谐波分量等特征量对多种短路故障进行判别,与正常运行状态进行区分。 |
| 关键词: 双馈风力发电机 多种 短路 电磁场 匝间 单相 故障 |
| DOI：10.7667/j.issn.1674-3415.2013.12.007 |
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| 基金项目:国家自然科学基金项目(51267017，51007077)；新疆大学博士科研启动基金项目（BS100123） |
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| Simulation study of multiple short-circuit fault electromagnetic field about DFIG in wind power |
| HE Shan1,2,WANG Wei-qing1,2,ZHANG Xin-yan1,2,WANG Hai-yun1,2,CHEN Jie1,DONG Xin-sheng3,GU Xue-song4 |
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| Abstract: |
| In order to analyze Doubly-fed Induction Generator (DFIG) electromagnetic property accurately when multiple faults happen and provide method and data to failure prediction, structure optimization and protection, this paper proposes an analytical method used for multiple short-circuit fault at multiple working conditions. The generator entire area model is set up by finite element method (FEM), electromagnetic field is calculated, and flux density distribution frequency spectrum is obtained by dealing with programmed data and FFT decomposition. 1.5 MW generator is modeled by this method, and the electromagnetic fields of sub-synchronous, super-synchronous and normal synchronization state and typical stator turn-to-turn and single-phase short-circuit fault are calculated and contrasted. Results of simulation manifest that this method can distinguish multiple short-circuit faults from the normal operation state according to waveforms of flux density nephogram and the characteristic quantity in frequency spectrum such as higher harmonic component. |
| Key words: DFIG in wind power multiple short-circuit electromagnetic field turn-to-turn single-phase fault |
