Active phase control to enhance distance relay in converter-interfaced renewable energy systems

For the distance protection applied in converter-interfaced renewable energy systems, various AC fault ride-through strategies of sources will cause a large phase difference between operating current relay and current, resulting mal-operation relay. To overcome this issue, paper proposes an active control for systems to enhance reliability This scheme firstly calculates by only using local measurements. Then, is eliminated via angle adjustment. verify effectiveness proposed scheme. The performance method tested radial three-terminal system IEEE 14-bus PSCAD/EMTDC.