| 直驱永磁风力发电机并入10kV配电网的研究 |
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| 引用本文： | 魏浩,邹海荣,吴增强.直驱永磁风力发电机并入10kV配电网的研究[J].上海电机学院学报,2014(3):169-174. |
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| 作者姓名： | 魏浩 邹海荣 吴增强 |
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| 作者单位： | 上海电机学院电气学院,上海200240 |
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| 摘 要： | 建立直驱永磁风力发电机的变流器模型及其控制策略,并接入10 kV配电网运行。通过对比并网出口和并网点上、下游的接地故障,探讨了风力发电机组并网对配电网继电保护的影响。同时,在配电网发生电压跌落的情况下,讨论了含全功率变频器的直驱永磁风力发电机组运行特性。结果表明,短路时,直驱永磁风力发电机组能提供稳定短路电流,并且对并网点下游短路电流有助增作用,对上游短路电流的影响较小;电压跌落时,机组能够很好地隔离故障,并且对电网有一定的无功支撑。
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| 关 键 词： | 直驱永磁风力发电机 变流器 配电网 短路电流 电压跌落 |
Direct-Driven Permanent Magnet Wind Generator Connected to a 10 kV Distribution Network |
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| WEI Hao,ZOU Hairong,WU Zengqiang.Direct-Driven Permanent Magnet Wind Generator Connected to a 10 kV Distribution Network[J].JOurnal of Shanghai Dianji University,2014(3):169-174. |
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| Authors: | WEI Hao ZOU Hairong WU Zengqiang |
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| Affiliation: | (School of Electrical Engineering, Shanghai Dianji University, Shanghai 200240, China) |
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| Abstract: | A model of direct driven permanent magnet wind turbine connected to a 10 kV distribution network is built,and the control strategies are established. The influence of wind turbine connection on the relay protection of the distribution network is analyzed by comparing the earth faults of output short circuit and the connecting points containing upstream and downstream. Operation characteristics of the wind turbine is discussed by considering the distribution network voltage drop. The results show that the turbine offers continuous current,and increases downstream short circuit current without any effect on the upstream short circuit current. The converter isolates the fault and provides reactive power to the grid when network voltage drops. |
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| Keywords: | direct driven permanent magnet generator converter distribution network short circuit current voltage drop |
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