ABSTRACT

The shift to renewable energy sources has proved to be a feasible alternative to satisfy the increasing energy needs of the developing world, significantly reducing the dependence on conventional energy sources without degrading the environment. Solar energy, in particular, remains one of the best available renewable energy source choices because it is abundant, clean and efficient. Solar photovoltaic (PV) technology directly converts solar energy into electric power. However, owing to intermittent nature of solar energy, electric energy storage or utility interaction is an indispensable component of solar PV systems. Utility interconnection calls for many issues like synchronization, power quality, reactive power management, and islanding. Among these issues, islanding detection is one of the most critical aspects of interconnecting distributed generation (DG) such as PV system to the utility. Islanding detection schemes may usually be categorized as remote schemes associated with utility-side islanding detection, local schemes associated with DG-side islanding detection, or the new advanced signal processing-based schemes. This paper presents an analysis of different islanding detection schemes and their benefits and limitations. A summary table that compares and contrasts the existing schemes is also presented.

摘要

事实证明，转向可再生能源是满足发展中世界日益增长的能源需求的可行替代方案，在不破坏环境的情况下显着减少对传统能源的依赖。特别是太阳能，仍然是最好的可再生能源选择之一，因为它丰富、清洁和高效。太阳能光伏（PV）技术直接将太阳能转化为电能。然而，由于太阳能的间歇性，电能存储或公用事业互动是太阳能光伏系统不可或缺的组成部分。公用事业互连需要许多问题，例如同步、电能质量、无功功率管理和孤岛。在这些问题中，孤岛检测是将光伏系统等分布式发电 (DG) 与公用事业互连的最关键方面之一。孤岛检测方案通常可以分为与公用事业侧孤岛检测相关的远程方案、与DG侧孤岛检测相关的本地方案或基于新的先进信号处理的方案。本文分析了不同的孤岛检测方案及其优点和局限性。还提供了比较和对比现有方案的汇总表。本文分析了不同的孤岛检测方案及其优点和局限性。还提供了比较和对比现有方案的汇总表。本文分析了不同的孤岛检测方案及其优点和局限性。还提供了比较和对比现有方案的汇总表。