Recently, the author learned from zhejiang wenling city power supply bureau infrastructure sector that possessing variable transmission lines of 110 kv north port policies to deal with and coordinate work with the engineering construction has been completed and the smooth start, this mark is taizhou first 20 kv officially into the lines of 110 kv power transmission and transformation project construction, possessing south east seawall piece of shipbuilding industry comprehensive development zone, longmen area and 2. 50000 customers will take the lead in using electricity to 20 kv energy is more efficient and economical. It is understood that with the development of wenling city overall planning and construction of 'wen ling sea' the implementation of the strategy, the south east seawall comprehensive development zone and longmen area has become wenling refrigeration industry, Marine aquatic products processing, ship manufacturing hub. According to the plan at the same time, the block will be gradually developed into logistics, commerce, entertainment, tourism and modern new district of residence. As the main propulsion of taizhou 20 kv networks area, wenling city power supply bureau for load forecasting and power distribution network structure planning. Block seawall, and according to the geographical location, present situation of power grid scale and future enterprises entered electricity capacity requirements, timely application of advancing the level of 20 kv power grid, strive to build a moderately ahead of a new type of power boost the local social and economic development. Port north of 110 kv power transmission and transformation project is located in wenling city east seawall in development blocks sea beaches, project total investment 83. 24 million yuan, the engineering construction in current main transformer 2, the total capacity is 160 million volt ampere, 110 kv line for 2 times, line length is 2 x 12. 2 kilometers, 20 kv line interval 20 times, line length is 7. Four segmented circular 86 km, the use of single busbar connection mode. According to relevant personnel possessing power supply bureau, the construction of 110 kv north port power transmission and transformation, will fill the blank of the taizhou lines of 20 kv voltage grade, and can effectively solve the 10 kv line power supply radius small, weak power, transmission capacity, also save the land resources in the process of substation construction, reduce substation and line stationing density, saving electric power line installation cost greatly.