Protection coordination of directional over current relay with distributed generation

Abstract

The present <span lang="EN-US">study is focussed on a comparative analysis of different meta-heuristic optimization approaches for directional overcurrent relay (DOCRs) coordination which has been discussed and presented in the literature. Further, to have a comparative analysis of the performance of the optimization methods discussed they have been tested on power system network of different sizes. To overcome such issues, this work proposed a simplex linear programming technique-based overcurrent relay method using general algebraic modelling system (GAMS). The execution of this work is done on the MATLAB 2018 a platform. Based on the obtained result the best meta-heuristic optimization method for mitigating the problem of relay coordination has been identified. Nevertheless, the operating time of the relay is high, so the fault is not corrected at a time. The developed model has been tested on test system of different sizes namely IEEE 9 bus and IEEE 14 bus system. The obtained values through series of simulation are compared with different methods for proving the proposed protection coordination scheme is more effective and efficient than others in terms of operating time and coordination time.</span>

Particle Swarm Optimization for Directional Overcurrent Relay Coordination with Distributed Generation

“…The PSO technique was used to conduct this investigation on the IEEE 14-bus system. The system consists of 40 DOCRs, five generators, two transformers, twenty transmission lines, and fourteen buses [12]. Two basic cases have been taken into consideration: Case 1 without DG and Case 2 with DG presence.…”

“…The parameter of synchronous generators, synchronous compensators, and bus data can be referred to [12] while doing the power loss analysis with ETAP. Comparing the overall power loss of the system with and without DG is the goal of the power loss analysis for both systems.…”