Busbar Capacitance Modeling Effects During Relay Testing Procedures for Transmission Lines Interconnecting Wind Power Plants

In this paper, the performance of phasor- and time-domain-based line differential and distance protection functions is evaluated considering the presence of wind power plants (WPPs). In the proposed study, the impact of busbars capacitance modeling on relay testing procedures is investigated by analyzing real devices. The obtained results reveal that the busbar capacitance modeling is mandatory during tests of transient-based functions, being crucial for the correct protection analysis for lines interconnecting WPPs.