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Into the twenty-first century, the State Department to narrow the gap, proposed the "Rise of Central China to promote and accelerate development of the west," the new strategy. Jiangxi is to seize this great opportunity, so that the economic development of Jiangxi into the fast lane. As the capital of Nanchang, Jiangxi, all work with each passing day, especially in urban construction. Currently, under construction Honggutan New Nanchang, Chang Dong New Area, such as Metro and other large-scale Lake District. New construction of these needed infrastructure ahead of the planning and timely construction. This paper, based on this requirement, planning the music of the 110KV power transmission grid. It includes the design of 110KV substation and 10KV line planning and design. Leroy Metro planning area 93 square kilometers, will develop into a new city with 5 million people. Therefore, the planned power grid in this region, it is particularly important.The regional planning of a 110KV substation, the high side voltage of 110KV, with three back to the line. Medium voltage side voltage is 35KV, six back round. Low-voltage side voltage 10KV, twenty-four back round. Choose two main transformer capacity, model SSZ-5000/110.10KV cable outlet to determine the user capacity specifications, all using the Concealed copper cable outlet. Cell equipped with 10KV switching station, residents of single-loop power users. Lift and power consumption in public facilities, electricity and separate from, the use of standby power source device, the standby power used from the Tang port 10KV substation out of a back line. Other equipment selection, design and configuration of tried to be reliable, simple, convenient, economical, reasonable, and has expanded the possibilities and the flexibility of changing the operation mode.
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