On May 12, the mobilization conference of Yuheng-Weifang 1000kV UHV AC Transmission and Transformation Project was held in Beijing. This project is the fourth approved transmission channel of the Four AC and Four DC UHV Projects included in the Air Pollution Prevention and Control Action Plan. As an important part of the main North China’s UHV AC grid, it will facilitate the development and transmission of energy bases in Shaanxi and Shanxi and greatly ease the power tension in Mid-East China.
The CPC Central Committee and the State Council attach great importance to UHV development and have made important instructions with specific requirements for many times. Last year, the government included the Four AC and Four DC UHV Projects into the Air Pollution Prevention and Control Action Plan. The launch of this Project signifies that all UHV AC projects in the Action Plan have begun their construction and marks that UHV grid has entered a new phase of comprehensive growth and large-scale construction.
The Project passes through Shaanxi, Shandong, Hebei and Shandong provinces. Three substations in Jinzhong, Shijiazhuang and Weifa were newly built, along with Yuheng Switch Station. The transformation capacity reaches 15GWA. The outgoing line interval of Jinan substation was expanded, with double-circuit lines of 2×1048.5km. The project has an investment of RMB24.18 billion, approved by NDRC in May 2015 and planned to put into operation in 2017. Yuheng-Weifang project is the UHV AC project with the longest transmission distance in the world so far. The Project will be the first to adopt disassembled-transport transformers to lower cargo risks and project costs. In addition, it will all use UHV AC transmission technologies and equipment independently developed by China. The Project is of great significance to boost the development of energy bases in Shaanxi and Shanxi, speed up the transformation of resource advantages into economic advantages, increase domestic demand and economic growth, help upgrade the equipment manufacturing industry, enhance the grid’s load support capacity in North China, implement the Air Pollution Prevention and Control Action Plan, and improve air quality.
Currently SGCC has built three AC and four DC UHV projects and another four AC and one DC UHV projects are under construction. The UHV transmission lines in operation and under construction are over 190 thousand kilometers, with a transformation (converting) capacity of 190GWA (GW), accumulatively transmitting 300TWh of power. Depending on the large grid to develop new energies, SGCC has integrated 120GW installed capacity of new energy, with the largest scale of integrated wind power and the fastest growth of solar generation in the world. UHV plays an increasingly important role in optimizing energy allocation in a large scope and ensuring a safe, economical, clean and efficient energy development in China. Along with the advancement of the following 5 AC and 8 DC UHV projects, the newly added investment in UHV grid will reach RMB450 billion. The total investment including in power grids of different levels will reach RMB1,500 billion, attracting another RMB1,700 billion investment in the electric power and related industries and contributing to more than 0.8 percentage point growth in GDP. At the same time, it can utilize excess capacity of steel and cement, demonstrating great economic, social and environmental value.