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Based on a large volume of relevant documents on smart grid, the paper summarized current developing situation of smart grid, including the definition and character description in Europe, America and China. It pointed out that because of different development environment and drive force, different countries' power grid enterprises and organizations comprehend the smart grid concept variously. The...
The future of electric power is smart grid, one of the key parts is smart substation. The Technical guide for smart substation is published by State Gird Corporation of China for the construction of smart substation and Tri-status measuring and control device which includes the steady state measure, transient state measure and dynamic state measure is presented. The uniformed source data with the...
This paper proposes a comprehensive evaluation model of regional power grid power quality(PQ). Firstly, a new Power Quality Index System(PQIS) of regional power grid is presented. Secondly, the comprehensive weight of each PQ subsystem is fixed by the Gl method and the scatter degree method. Thirdly, a comprehensive evaluation model of regional power grid PQ is designed using the stepwise scatter...
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