This article analyses existing problem of electric power system of the movement transformer substation - power shovel of Huo coal group open coal mine and the theory of this system. A set of electric power systems with rational science is designed, offering the reliable electric guarantee for the development of the coal group suddenly. The design of a link of system is introduced in detail in the article. The design adopts the design method of the half movement transformer substation of 60kv/6kv, making their 60kv loop wire working on even if moving a single movement transformer substation. It has enormous economic benefits.
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