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电网技术  2011 

双馈感应风电机组异常脱网及其无功需求分析

, PP. 158-163

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Abstract:

分析了双馈感应(doublyfedinductiongenerator,DFIG)风电机组因转子回路撬棒保护动作诱发机组脱网的过程,撬棒保护动作远快于定子并网接触器动作,因而机组脱网前存在短时鼠笼异步运行状态的现象。建立了双馈感应发电机DFIG正常运行状态及鼠笼异步运行状态的数学模型,分析了双馈感应风电机组脱网时对电网的无功需求,总结了机组异常脱网时的转差–无功特性。最后提出了风电场无功补偿措施,如配置无功补偿设备等。

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[39]  附录A
[40]  表A1 Gamesa G58-850 kW机组主要运行参数
[41]  Tab. A1 Main operation data of G58-850 kW wind turbine
[42]  额定功率/
[43]  kW 额定转速/
[44]  (r/min) 定子功率/
[45]  kW 转子功率/
[46]  kW 定子电压/
[47]  V 定子电流/
[48]  A
[49]  85 0 1620 800 50 690 669
[50]  转子电压/V 转子电流/A Rs /? Xs /? Rr /? Xr /? Rm /? Xm /?
[51]  15 0 277 0.016 0.074 0.0125 0.121 215 6.78
[52]  注:定子三角形连接,功率因数为1,额定电压为690V每相。

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