Annual Report 2003-2004

NRIElectric Power Systems Research CenterProject Title:An applicable Software forPower System Relay Operation Simulationto Use Relay Coordination AssessmentDepartment: Power System StudiesEmployer: Niroo Research InstituteProject Staff: H. Danaei, J. AbbasiProject Manager: H. BerahmandpourProject Code: PSYPN03Summary:Relay operation simulation is a suitable tool for assessment of relay coordination. Thissimulation both in operation or planning can help to protection engineer to get the bestsetting of protective relays.In this software, three kinds of power system relays as distance, overcurrent andearthfault relays are modeled. This software has also a powerful environment forpreparing the fault scenario. In this scenario, the type of the fault with fault impedance,the combination of the relays, the network manoure and some other information can bemodeled by the user.2