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This paper proposes a parallel computing method of topological analysis based on the partition of grid model data, and based on the smart grid dispatch control system it design and develop the parallel topology analysis service using the OpenMP shared memory programming model and C/C++ programming language. According to the layering and zoning features of the smart grid dispatch control system, this method divides the grid mode by area and power station. Package the topology search function and do parallel processing for mode data according to different area and power station, which can realize the parallel network topology analysis. The test result on the actual grid shows that this method has good stability and real-time, and it can meet the system online simulation, analysis and control applications requires for the topology analysis.

This paper construct a large-scale power grid online analysis architecture based on "'Dispatch Cloud' architecture and combined with the power system characteristics and large grid dispatch system online analysis software features, it propose power grid online analysis software wide-area multi-level distributed parallel computing mode based on Dispatch Cloud Platform which is service oriented architecture (SOA). In this mode the coordination manage needed is achieved in the way of service encapsulation based SOA, including, data and model management services, computing resource management services, the job management and parallel computing services, In this mode the coordination manage needed is achieved in the way of service encapsulation based on SOA, including, data and model management services, computing resource management services, the job management and parallel computing services. which will provide theoretical and technical support to the large-scale power grid Online analysis software design and development Using Cloud technology.