Investigation of Transmission Line Outage Impact Under Heavy Wind Penetration on LOLE Metric

It is expected that the number of renewable energy sources will continue to increase offering unique challenges for reliability evaluation. Increase in load growth along with heavy renewable penetration will make it critical to ensure the system can deliver power to the customers. Due to fundamental difference between conventional and renewable generation existing reliability evaluation approach may no longer be sufficient. This will make it necessary to include transmission line failure in reliability evaluation if there is a significant contribution from renewable energy. The paper highlights the importance of including transmission line outage in calculation of Loss of Load Expectation (LOLE) to evaluate reliability of a transmission network and the impact of lines when there is only conventional generation on network compared with conventional and wind generation.