Wide-area protection system (WPS) is a trend of the future power system control. It monitors the contingency of a power system from the system-wide view and takes an instant action to restore the power system to its stable point. Because of the special characteristics, the WPS scheme is difficult to be simulated and tested under a conventional development environment. A Web services-based architecture for WPS design and simulation is proposed in this paper. This novel architecture wraps the legacy energy management system (EMS) functions into standard Web service interfaces, and provides standard remote computing and security evaluation services from EMS to WPS. Under this architecture, WPS scheme can be simulated and tested efficiently and the gap between simulation and running environment will be filled.
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