Realistic Microgrid Test Bed for Protection and Resiliency Studies

2019 North American Power Symposium (NAPS) Pub Date : 2019-10-01 DOI:10.1109/NAPS46351.2019.9000214

P. Gadde, S. Brahma

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引用次数: 12

Abstract

Momentum towards realization of smart grid will continue to result in high penetration of renewable fed Distributed Energy Resources (DERs) in the Electric Power System (EPS). The drive towards resiliency will enable a modular topology where several microgrids are tied to-gather, operating synchronously to form the future EPS. These microgrids may very well evolve to be fed by 100% Inverter Based Resources (IBRs), and required to operate reliably in both grid-connected and islanded modes. Since microgrids will evolve from existing distribution feeders, they will be unbalanced in terms of load, phases, and feeder-impedances. Protection and control of such microgrids, spanning over grid-connected mode, islanded mode, and transition mode need urgent attention. This paper focuses on the control aspect to facilitate stable operation and power sharing under these modes. A detailed EMTP model of a testbed using the IEEE 13-bus system is created in PSCAD, involving multiple inverters. Control strategy, modes, and implementation of inverter controls are described, and results showing stable operation and power sharing in all modes are presented.

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现实微电网保护与弹性研究试验台

智能电网的实现势头将继续推动可再生能源分布式能源在电力系统中的高渗透率。对弹性的推动将使模块化拓扑成为可能，其中几个微电网连接在一起，同步运行以形成未来的EPS。这些微电网很可能演变为100%由基于逆变器的资源(IBRs)供电，并且需要在并网和孤岛模式下可靠运行。由于微电网将从现有的配电馈线发展而来，因此它们在负载、相位和馈线阻抗方面将是不平衡的。这类微电网的保护与控制，跨越并网模式、孤岛模式和过渡模式，需要迫切关注。本文的重点是控制方面，以促进在这些模式下的稳定运行和功率共享。在PSCAD中建立了一个使用IEEE 13总线系统的试验台的详细EMTP模型，该模型涉及多个逆变器。描述了逆变器控制的策略、模式和实现，并给出了在所有模式下稳定运行和功率共享的结果。

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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2019 North American Power Symposium (NAPS)

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