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《Proceedings of the Chinese Society of Universities for Electric Power System and its Automation》 2009-05
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Using PMU for State Estimates for Multi-area Interconnected Power System

XU Wei-dong 1;ZHANG You-jun 1;LI Peng 2 (1.Shandong Electric Power Engineering Consulting Institute,Jinan 250013,China; 2.Shandong Tancheng Electric Power Company,Tancheng 276100,China)  
In the paper,based on hybrid measurement of supervisory control and data acquisition(SCADA) and phasor measurement units(PMU),a new state estimation method for multi-area interconnected power system is presented.With the placement of PMUs based on the improved method of bordered block diagonal form(BBDF),the large system can be divided into many small systems.Using the data of PMUs between subsystems as boundary condition based on thevenins equivalence for exterior-network,the problem of distributed power system state estimation turns to the problem with the modification of boundary state.At last,the effectiveness of the proposed algorithm is verified with numerical simulation on 6-machine 25-bus power system,and the computational speed is fast and the result is accurate.
【CateGory Index】: TM744
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