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According to the construction situation of distribution automation system undergoing nationwide and the practical requirements of Shanghai power grid, the technology contents and the technical solution of practical distribution automation is discussed. Furthermore, a configuration mode of practical distribution automation system for Shanghai power grid is proposed. Preliminary practice carried out in Shanghai power grid has proved the practical distribution automation system to be effective, economic, and practical.

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Analysis and resolution of electric field distribution in fast slide-in termination and joint using Finite Element Numeral Analysis Method described in this paper. Rules of interface compress stress, compress strain, and rubber material peristaltic change as well as material fatigue character after inserting and drawing 1000 times are discussed. The research results proved that electric field controlled cone design in insulation structure of the terminations and joints is important. The elasticity and permanence distortion of the EPR used as the main insulating material may be 50% and 2%. Inserting and drawing surplus tolerance of the termination and joint should not exceed 1.7.