Overcurrent Relay Coordination for Power System with Integrated Renewable Energy Source – A Review

Coordination of time delay overcurrent relays becomes more difficult when renewable energy sources are incorporated into power networks. Because these sources provide changing current patterns, standard relay settings may not be enough. To ensure reliable fault prevention in systems that display the unpredictability associated with renewable energy sources such as solar and wind, this article looks at ways to enhance relay coordination. To determine the ideal time delay settings that guarantee selectivity and shorten outage length, it presents a framework that combines simulation-based fault analysis with cutting-edge optimization techniques including genetic algorithms and machine learning. The paper highlights the need of adaptive relaying strategies thus could enhance operating resilience on the system along facing changing system conditions. Our results show that relay coordination can be modified to meet industry needs and drastically reduce the fault response time. The findings of this study support additional initiative to integrate renewable energy generation into current energy infrastructures in an effective manner for sustainability and reliability improvement.