The stability and security of the power system has to be maintained under different fault conditions. Modeling and simulation of different fault conditions are needed for a better design of future Shipboard Power Systems (SPS). The protective relay plays a major role in the protection of the power system. The real time digital simulator (RTDS) is an effective tool for modeling and simulation of a power system, protective relay and the controls needed to simulate different fault conditions in real time. The Hardware in the Loop Testing (HIL) provides the opportunity to understand the behavior and validate the model of a physical device. This paper addresses the HIL tests of the Schweitzer Engineering Laboratories SEL-487B bus differential relay and the software differential relay model development. The software relay model is designed by using the RSCAD software suite and is validated using the results from the HIL testing.
The Hardware in the Loop (HIL) tests and the software relay model tests has been implemented using an 8-bus terrestrial power system test case. The consistency and performance of the software differential relay model has been analyzed.
Vamsi K Vijapurapu, Noel N. Schulz, Anurag K Srivastava, Jimena Bastos, Grand Challenges in Modeling & Simulation, Summer Simulation Conference (SummerSim), 2008 Edinburgh, Scotland
KEYWORDS: Hardware in the loop, real time digital simulator, differential relay, relay modeling, bus protection