ENHANCED DISTRIBUTED SERVICE MODEL FOR POWER SYSTEM STATE ESTIMATION

Web services are emerging technologies of choice for implementing distributed service models for performing power system operations such as state estimation of power systems in a complete secure, distributed and platform independent environment. The power system applications themselves have been developed in different platforms and language paradigms. Interoperability between power system applications becomes a major issue because of the heterogeneous nature. The main aim of this paper is to propose a model that enhances the interoperability between power system applications byrepresenting the power system data in a more flexible and language independent format (i.e.) in XML and to implement the power system operations in a highly distributed environment. The power systemstate estimation problem is considered for representation and analysis in a distributed environment. The proposed Web service model using JAX-RPC (Java API for XML-based RPC) for state estimation ishighly distributed and has inherent features such as platform ndependency, interoperability, functionreusability, discoverability and security. A generalized XML based data generation model has beenproposed for exchanging data in order to enhance the interoperability between legacy power system applications. The performance of the proposed JAX-RPC model for power system state estimation is compared with the traditional client-server and RMI models using Round Trip Time (RTT) as a measure. (The overhead associated with the proposed model).