important and ponent of the power it assumed the task of conversion and distribution of grid security and the economy play a decisive role in running is to contact the user's power plants and intermediate links. With economic development, expanding grid capacity, reliability of operation of the power grid is getting higher and higher requirements. Development of science and technology, intelligent switches, photoelectric current and voltage transformer, a run-line state detection, training simulation Substation Operation matures, such as high-tech, as well as fiber-optic technology, computer high-work system in the development of real-time applications, bound to the existing substation automation technology have a profound impact, all-digital substation automation system development trend.
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