China News Service, Nanjing, January 12 (Zhang Jian and Dong Ying) On the 12th, the "height" 385-meter transmission tower was capped in Jiangsu, making it the "taller" in the world's transmission tower industry.

  The capped iron tower is an important part of the key project of the "Thirteenth Five-Year Plan for Electric Power Development" - the 500 kV transmission line project from Fengcheng in Taizhou to Meili in Wuxi.

The transmission line project is the most technically difficult 500 kV cross-river interconnection transmission project in the history of China's power construction. It is located in Wuxi Jiangyin Ligang and Taizhou Jingjiang New Bridge on both sides of the Yangtze River. It is the sixth in Jiangsu to cross the Yangtze River. High-grade power channel.

On January 12, the "height" 385-meter transmission tower was capped in Jiangsu.

Photo by Shi Jun

  "The project needs to cross the Yangtze River. In order not to affect shipping, we initially planned to build a 400-meter-high tower. Finally, after dozens of optimization and design improvements, the height was finally determined at 385 meters, so that all types of ships on the river can be safe and stable. Passed.” According to Chen Songtao, Construction Department of State Grid Jiangsu Electric Power Co., Ltd., a series of world records were also created during the construction of the project, which has accumulated Chinese experience in the construction of ultra-high power transmission towers and the construction of long-distance spanning towers for related fields in the world. .

  All along, Jiangsu's regional economic development has obvious characteristics.

In 2021, the annual electricity consumption in southern Jiangsu will be 409.092 billion kWh, accounting for 57.61% of the province; the annual electricity consumption in northern Jiangsu will be 150.876 billion kWh, accounting for 21.25% of the province.

Southern Jiangsu is the load center of the entire Jiangsu and even the Yangtze River Delta region, while the energy demand in northern Jiangsu is relatively low, but new energy is developing rapidly.

On January 12, the "height" 385-meter transmission tower was capped in Jiangsu.

Photo by Shi Jun

  In 2021, offshore wind power in Yancheng and Nantong alone will exceed the installed capacity of 10 million kilowatts.

Most of the electric energy transported to Jiangsu through UHV by energy bases such as Shanxi is also located in northern Jiangsu.

Therefore, "northern power transmission to the south" is more urgent.

  Due to the limited power transmission capacity across the river, the phenomenon of "power shortage in northern Jiangsu and power shortage in southern Jiangsu" still exists.

In order to alleviate the problem of unbalanced power distribution, State Grid Jiangsu Electric Power Co., Ltd. has built a "six vertical and six horizontal" 500 kV grid structure, and built five high-level river crossing channels of "North Power South Transmission", four of which are It is a 500 kV transmission line across the river, with an overall transmission capacity of nearly 13 million kilowatts.

In addition, the electric energy of Anhui coal-fired power base also crosses the Yangtze River in Suzhou area through the Sutong GIL integrated pipe gallery project, and is transported to southern Jiangsu and Shanghai, with a transmission capacity of 9.8 million kilowatts.

On January 12, the "height" 385-meter transmission tower was capped in Jiangsu.

Photo by Shi Jun

  After the completion of the 500 kV transmission line project from Fengcheng in Taizhou to Meili in Wuxi, the maximum transmission capacity will reach 6.6 million kilowatts, and about 28.9 billion kWh of clean electricity can be sent from the north bank of the Yangtze River to the south bank of the Yangtze River every year, meeting the daily needs of about 8 million households. electricity demand.

  "After the iron tower is capped, we will also carry out construction such as the installation of fittings and wiring across the river. The project is expected to be completed in June 2022." Chen Songtao said.

(Finish)