The deployment of distributed energy resources (DER) theoretically improves the reliability of a radial distribution system by taking advantage of the ability to island DERs and customers. However, an isolation device has to be placed in order to create this “island.” On the other hand, a radial distribution system typically lacks isolation devices that are able to detect and isolate a fault, especially on the main distribution feeder, which is nowadays often protected by the substation breaker. This paper proposes a methodology to identify the optimal locations to install isolation devices in a radial distribution network with DER integrations, aiming at reliability improvements of distribution networks. We exploit utility historical load and fault data for generating multiple fault scenarios and develop a stochastic programming-based optimization model for unserved energy minimization. Two case studies on an IEEE 4-bus and 123-bus systems are performed, including some sensitivity analysis.

中文翻译：

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MILP 优化模型，用于配电系统中带有 DER 的隔离设备选址以提高可靠性

分布式能源 (DER) 的部署在理论上通过利用 DER 和客户的孤岛能力提高了径向配电系统的可靠性。但是，必须放置隔离装置才能创建这个“岛”。另一方面，径向配电系统通常缺乏能够检测和隔离故障的隔离装置，尤其是在主配电馈线上，现在通常由变电站断路器保护。本文提出了一种确定在具有 DER 集成的径向配电网络中安装隔离设备的最佳位置的方法，旨在提高配电网络的可靠性。我们利用公用事业历史负载和故障数据来生成多个故障场景，并开发基于随机编程的优化模型，以实现无服务能源最小化。对 IEEE 4 总线和 123 总线系统进行了两个案例研究，包括一些敏感性分析。