Despite distributed generations (DGs) advantages, the presence of them can cause glitches in distribution networks. One of the typical glitches is a mismatched fuse and recloser in temporary short circuits, which is often remedied by fault current limiter (FCL). By calculating the expected benefits to distribution companies (DISCOs) in various value of loss load scenarios, once the uncertainty output of DGs is considered, this paper examines the effectiveness of FCLs in solving drawbacks and improving reliability. FCL can improve network reliability in one of two ways: a) the FCL can reduce the magnitude of fault current, thereby decreasing the failure rate of protective devices, b) the FCL can correct a mismatched fuse and recloser, resulting in a lower energy not supplied (ENS) rate. The present paper uses the biogeography-based optimization method to measure optimal FCL impedance in terms of maximizing the DISCO’s benefit after FCL installation. Using simulated performance on a test distribution system, FCL network penetration is founded to resolve the identified problem by improving the ENS rate.

中文翻译：

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分布式电源保护失谐对配电网故障限流器可靠性影响分析

尽管分布式发电 (DG) 具有优势，但它们的存在可能会导致配电网络出现故障。典型故障之一是临时短路中的熔断器和重合器不匹配，通常通过故障限流器 (FCL) 进行补救。通过计算在各种损失负载情况下对配电公司 (DISCO) 的预期收益，一旦考虑 DG 的不确定性输出，本文将检验 FCL 在解决缺点和提高可靠性方面的有效性。FCL 可以通过以下两种方式之一提高网络可靠性：a) FCL 可以降低故障电流的大小，从而降低保护装置的故障率，b) FCL 可以纠正不匹配的熔断器和重合器，从而降低能量供给 (ENS) 率。本文使用基于生物地理学的优化方法来测量最佳 FCL 阻抗，以最大限度地提高 DISCO 在 FCL 安装后的收益。使用测试分发系统上的模拟性能，建立 FCL 网络渗透，通过提高 ENS 率来解决已识别的问题。