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A Novel Islanding Detection Technique Based on Event Index Value for Reconfigurable Microgrid
IEEE Transactions on Industry Applications ( IF 4.4 ) Pub Date : 2021-05-11 , DOI: 10.1109/tia.2021.3079384
Pravin Kumar , Vishal Kumar , Barjeev Tyagi

This article presents an islanding detection technique based on event index value, which is derived from the superimposed components of sequence impedance with the consideration of all the operating configurations of the microgrid. Voltage and current signals are acquired at the terminal of distributed generators to compute the impedance. The proposed technique successfully discriminates the islanding, and non-islanding events (NIE) under different operating conditions, including zero power mismatch, and hence eliminates the non-detection zone and unwanted tripping due to the various types of NIEs. The detection was performed within half cycle for all the conditions. The proposed technique has been illustrated on a 7-bus reconfigurable microgrid test system. A large number of non-islanding and islanding events have been simulated for a range of power mismatches. The proposed technique has also been verified on the modified IEEE 34-bus system. The obtained results have been compared with the existing techniques reported in the literature, which proves the supremacy of the proposed technique. The effects of sampling frequency and noise have also been studied.

中文翻译:

基于事件指标值的可重构微电网孤岛检测新方法

本文提出了一种基于事件指标值的孤岛检测技术,该技术是从序列阻抗的叠加分量中推导出来的,同时考虑了微电网的所有运行配置。在分布式发电机的终端获取电压和电流信号以计算阻抗。所提出的技术成功地区分了不同工作条件下的孤岛和非孤岛事件 (NIE),包括零功率失配,从而消除了由于各种类型的 NIE 导致的非检测区和不必要的跳闸。所有条件均在半周期内进行检测。所提出的技术已在 7 总线可重构微电网测试系统上进行了说明。已经针对一系列功率失配模拟了大量非孤岛和孤岛事件。所提出的技术也已在改进的 IEEE 34 总线系统上得到验证。所得结果与文献报道的现有技术进行了比较,证明了所提出技术的优越性。还研究了采样频率和噪声的影响。
更新日期:2021-07-20
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