A Modified Load Encroachment Technique for Power Factor Monitoring

Abstract

This paper presents a new approach in application of distance relay in distribution system. During the heavy load conditions, the load encroachment of impedance into the distance relay protection zones is a well-known reason for distance relay mal-operation. Therefore, all the modern digital distance relays are equipped with the load encroachment scheme. This paper proposes the idea of using the load encroachment scheme of distance relay for monitoring purpose in presence of RES integration. The OpenDSS and Matlab software are used to test the effectiveness of the method with the IEEE 8500 node test feeder. The proposed method is tested with the unbalanced distribution system feeder loading and distributed model of solar generations. ? 2018 IEEE.