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Centralized emergency control for multi-terminal VSC-based shipboard power systems

机译:基于多终端基于VSC的舰载电源系统的集中应急控制

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摘要

Multi-terminal hybrid AC/DC power systems have found a wide application in different areas, such as wind and solar energy, microgrids, shipboard power systems (SPS), etc. To ensure reliability and survivability of the SPS, the emergency control is necessary to be implemented, which is widely utilized in conventional AC networks and hybrid AC/DC systems. This paper proposes a concept of reconfiguration theory based on a centralized emergency control algorithm of the SPS with a complex structure, which has high requirements for reliability and survivability. The proposed method complements the well-proven local control approaches, paying particular attention to the SPS reconfiguration. A special emphasis is placed on improving the SPS reliability by combining the AC nodes, as well as on increasing the reconfiguration procedure efficiency, the latter being achieved by not taking into account the special constraint on the DC circuit breakers states. The algorithm carries out a preventive calculation of control actions using the genetic algorithm optimization procedure. The case studies were performed by using the modified DC zonal electrical distribution system (DC-ZEDS) model, and the results verify the feasibility and effectiveness of the proposed method and model.
机译:多端子混合式AC / DC电源系统已在风能和太阳能,微电网,舰船电源系统(SPS)等不同领域中得到广泛应用。为了确保SPS的可靠性和生存能力,必须进行应急控制在传统的AC网络和AC / DC混合系统中被广泛使用。本文提出了一种基于结构复杂的SPS集中式应急控制算法的重构理论,对可靠性和可生存性有很高的要求。所提出的方法是对成熟的本地控制方法的补充,尤其要注意SPS的重新配置。特别强调通过组合AC节点来提高SPS可靠性,以及提高重新配置过程的效率,后者是通过不考虑对直流断路器状态的特殊约束来实现的。该算法使用遗传算法优化过程对控制动作进行预防性计算。通过使用改进的直流区域配电系统(DC-ZEDS)模型进行案例研究,结果验证了所提方法和模型的可行性和有效性。

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