Modeling and Analysis of Transient Overvoltage due to Reclosing of Distributed Energy Resources

M. Ozcelik, Taite Clark, Michaela Ruppert, Jian Sun
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Abstract

With the inclusion of renewable energy sources in the electricity grid, micro-grid and distributed generation (DG) concepts have come to the fore in feeding local loads. Inverter technologies are used to convert the direct current (DC) produced by energy sources such as photovoltaic (PV) to alternating current (AC) and to provide grid integration. However, sometimes inverters (because of their non-detection zones, speeds, etc.) cannot detect the island mode during reclosing at the breaker. Such a situation could damage utility equipment and the distributed generator itself. Therefore, in the control hardware in the loop (CHIL) simulation study, the effect of 180-degree out-of-phase closure on utility and customer equipment was investigated according to line distance and location of the load. The simulation study was carried out in real-time.
分布式能源重合闸瞬态过电压建模与分析
随着可再生能源被纳入电网,微电网和分布式发电(DG)的概念在为本地负荷供电方面已经脱颖而出。逆变器技术用于将光伏(PV)等能源产生的直流电(DC)转换为交流电(AC)并提供电网集成。然而,有时逆变器(因为它们的非检测区域、速度等)在断路器重合闸时无法检测到孤岛模式。这种情况可能会损坏公用设备和分布式发电机本身。因此,在控制硬件在环(CHIL)仿真研究中,根据线路距离和负载位置,研究了180度失相合闸对公用事业和客户设备的影响。仿真研究是实时进行的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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