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首页> 外文期刊>Electric Power Components and Systems >Islanding Detection in Unbalanced Distribution Systems with Doubly Fed Induction Generator Based Distributed Generation Using Wavelet Transform
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Islanding Detection in Unbalanced Distribution Systems with Doubly Fed Induction Generator Based Distributed Generation Using Wavelet Transform

机译：基于小波变换的基于双馈感应发电机的分布式发电不平衡配电系统的孤岛检测

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摘要

A passive islanding-detection technique is proposed in this article for a distribution network with a distributed generation system including a doubly fed induction generator. This method is based on the processing of the measured voltage signals of the distributed generation connecting bus using discrete wavelet transform. Different types of disturbances including faults (single-phase, two-phase, and three-phase) and power quality disturbances (capacitor switching, load switching, and motor starting) are used to discriminate from islanding conditions. A wind turbine equipped with a doubly fed induction generator is considered as the distributed generation source in an unbalanced distribution system. The studied system is simulated with high level of detail in PSCAD/EMTDC software for the purpose of this work. The results of implementing the proposed method verify the high accuracy, reliability, and speed of the proposed islanding-detection approach even with small non-detection zone and the presence of high levels of noise in measured voltage signals.
机译：本文针对具有分布式发电系统的配电网络提出了一种无源孤岛检测技术，该分布式发电系统包括双馈感应发电机。该方法基于使用离散小波变换处理分布式发电连接母线的测量电压信号。包括故障（单相，两相和三相）和电能质量扰动（电容器切换，负载切换和电动机启动）的不同类型的干扰可用于区分孤岛情况。配备有双馈感应发电机的风力涡轮机被认为是不平衡配电系统中的分布式发电源。为了这项工作，在PSCAD / EMTDC软件中对所研究的系统进行了详细的模拟。实施该方法的结果验证了所提出的孤岛检测方法的高准确性，可靠性和速度，即使在较小的非检测区域和被测电压信号中存在高电平噪声的情况下也是如此。

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