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Fault Ride Through improvement of Fixed Speed Wind Turbine Using CR-FCL with its Modified Control Strategy

机译:通过使用CR-FCL改进定速控制策略改进定速风力涡轮机的故障排除

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摘要

This paper proposes a controllable resistive type fault current limiter (CR-FCL) with its modified control strategy to improve fault ride-through capability (FRT) of fixed speed wind turbine (FSWT). Investigated system includes squirrel cage induction generator, the CR-FCL, and the FSWT connected to infinite bus through double-circuit transmission line. The CR-FCL is located in beginning of the parallel line. The proposed structure with its modified control method inserts an optimum value of resistance during fault to achieve maximum FRT capability. It will be shown that this optimum value depends on fault location and pre-fault active power. Two different wind speeds will be applied to the investigated system, which cause two various output powers. Then, it will be proved that each condition needs its own optimum resistance during the fault to achieve the maximum FRT capability of the FSWT. PSCAD/EMTDC is utilised to show accuracy of the proposed scheme and analytical analysis.
机译:提出了一种可控的电阻型故障限流器(CR-FCL),并对其控制策略进行了改进,以提高定速风力发电机(FSWT)的故障穿越能力(FRT)。研究系统包括鼠笼感应发电机,CR-FCL和通过双回路传输线连接到无限母线的FSWT。 CR-FCL位于并行线的开头。所提出的结构及其改进的控制方法可在故障期间插入最佳电阻值,以实现最大的FRT能力。将显示该最佳值取决于故障位置和故障前有功功率。两种不同的风速将应用于研究的系统,这会导致两种不同的输出功率。然后,将证明每种情况在故障期间都需要其自身的最佳电阻,以实现FSWT的最大FRT能力。 PSCAD / EMTDC用于显示所提出方案和分析分析的准确性。

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