In the last decade, with increasing power supply from distributed generation (DG) to the distribution system, the traditional passive radial distribution systems transformed into an active multisource system. The nature of fault location schemes designed for the distribution system has traditionally been based on unidirectional power flow assumptions, making them ineffective for a distribution system with a higher level of DG penetration. New grid regulations require DGs to remain connected to the system in the event of a fault to provide support to the grid and improve system reliability. This makes the fault location process important as the timely location of a fault speeds up the restoration process, which improves the system reliability. Herein, providing a comprehensive review of the available techniques for fault location in the distribution system with DG penetration is focused on. An analysis is given on the shortcomings of traditional protection methods when applied to DG‐integrated distribution systems. A comparative analysis is carried out in which the merit and demerit of each technique is assessed. A discussion on some other important technical issues arising due to DG integration, such as effects on the stability of the distribution system, is also given.

中文翻译：

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分布式发电系统中故障定位方法的文献综述

在过去的十年中，随着从分布式发电（DG）到配电系统的电力供应的增加，传统的无源径向配电系统转变为有源多源系统。传统上，为配电系统设计的故障定位方案的性质一直基于单向潮流假设，这使它们对具有更高DG渗透水平的配电系统无效。新的电网法规要求DG在发生故障时保持与系统的连接，以为电网提供支持并提高系统可靠性。这使得故障定位过程很重要，因为及时定位故障会加快恢复过程，从而提高系统可靠性。在此处，着重介绍了利用DG渗透的配电系统中故障定位的可用技术的全面综述。分析了传统保护方法在应用于DG集成配电系统时的缺点。进行比较分析，评估每种技术的优缺点。还讨论了由于DG集成而引起的其他一些重要技术问题，例如对配电系统稳定性的影响。