Web services based distributed dynamic protection system simulation and testing

The paper introduces the idea of using Internet based distributed simulation resources for power system protection studies. The previously developed integrated modelling environment (IME) for protection has been utilised to demonstrate the principle of closed loop multi scheme protection simulation using web services. An example study of two different protection schemes connected to a power system model and performing protection switching sequence simulation is presented. Both the power system model represented alternating transient program (ATP) and protection system model coded in C++ are coordinated by a client software application. The potential benefits of the proposed solution for various customers are outlined in the concluding part of the paper.