The three hottest ultra-high voltage DC clean powe

2022-08-04
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three UHVDC: clean power transmission to East China

Abstract: the three UHVDC transmission lines connect the needs of large-scale transmission of clean hydropower in the West with the power demand of economic development in the load center area in the East

since July, hot weather has swept most parts of the country, and many places have entered the "barbecue mode". Compared with the rising high temperature and high load, the power supply in East China this year is relatively stable. The three major UHV DC transmission lines - ± 800 kV Fufeng (Xiangjiaba Shanghai), JinSu (Jinping Sunan) and binjin (Xiluodu Zhejiang) DC transmission lines are indispensable

according to the data of Sichuan Electric Power Trading Center, as of the end of July, the three UHV DC transmission lines of Fufeng, JinSu and binjin had delivered a total of 50.88341 billion kwh. According to the report of Greenpeace International, every 100million kwh of UHV power transmission is equivalent to about 7 tons of PM2.5, about 17 tons of PM10 and about 450 tons of sulfur dioxide and nitrogen oxides in the load center

the three UHVDC transmission lines have greatly promoted the green development of East China while optimizing the allocation of energy resources

three "arteries" send clean electricity

ultra high voltage power is connected with the development and utilization of clean energy in the West and North, and the clean development in the East and middle, which has become the strategic focus of the clean development of national energy. This is particularly obvious for Sichuan power, which is rich in hydropower resources. The total installed capacity of theoretical water resources reserves in Sichuan reaches 144million kW, and the technically exploitable capacity is more than 120million kW. The hydropower resources in Sichuan are "the richest in the world"

the "12th Five Year Plan" period is a major opportunity period for Sichuan electric power development to achieve new leaps. According to the planning of the State Power Corporation for UHV, Sichuan is not only the most important transmission end of the state power, but also the main battlefield and position of UHV construction. During this period, Sichuan has made every effort to promote the construction of three UHV DC transmission lines, opening up a fast channel for hydropower transmission

since 2010, Fufeng, JinSu and binjin UHV DC have been put into operation successively. The company's large-scale power transmission terminal and large-scale receiving terminal have been extended to all industries, and a new pattern of long-distance and large-scale power transmission has been formally formed. The transmission power of the Fufeng line is 6.4 million KW, that of the Jinzhou Suzhou line is 7.2 million KW, and that of the Binzhou Jinzhou line is 7.5 million KW. Among them, the binjin DC transmission project, which was put into operation on July 3, 2014, is one of the DC transmission projects with the largest transmission capacity, the highest voltage level and the largest rated current in the world. It is also the first UHV transmission project in the world to realize 8million kW and 8.4 million kW overload transmission

in the wet season every year, in order to fully absorb Sichuan's clean hydropower, Sichuan Electric Power Company of China keeps the thermal power units in the minimum startup mode, gives priority to ensuring the full generation of hydropower, and transmits the clean hydropower resources to the eastern load center. UHV has made Sichuan clean Hydropower "take out" prosperous, and the hydropower generation capacity of Sichuan power has been well absorbed

as of the end of July this year, the adjusted installed capacity of Sichuan power system was 81.8592 million KW, including 65.8306 million kw of hydropower installed capacity and 13.7993 million kwh of hydropower generation, an increase of 5.05% over the same period in 2016. Based on the calculation that every 100million kwh of electricity corresponds to 31500 tons of standard coal, the accumulated 5088341 million kwh of electricity delivered to East China is equivalent to saving 16million tons of standard coal and reducing carbon dioxide emissions by 40million tons

electricity drives green development from afar

in the past, in order to meet the power supply, a large number of thermal power plants have been built in the East and central regions, with more than 2billion tons of coal transported by railway every year. On average, there are 30 kilometers of power plants along the Yangtze River and 10 kilometers from Nanjing to Zhenjiang. Moreover, the eastern and central regions excessively rely on long-distance coal transportation, which not only consumes high-quality energy to transport low-quality energy, but also causes multiple air pollution in the transportation and storage links. Green water and green mountains are golden mountains and silver mountains. The CPC Central Committee and the State Council have taken adjusting the energy structure and promoting clean development as an important strategy to combat haze

located at the beak of the Yangtze River Delta, Shanghai is an economic center of China and a hot spot of energy consumption. External electricity is indispensable. The Fufeng line has brought green and clean Hydropower to Shanghai in Sichuan. During the 2010 Shanghai WorldExpo, this has become a bright "business card" for China to show the world low-carbon, economic and environmental protection. Coal comes from the air, electricity comes from afar, and clean electricity comes. A grand plan of UHV power has become a reality in Shanghai

the Jinzhou Suzhou line and Binzhou Jinzhou line that were subsequently completed have not only eased the power shortage in Jiangsu and Zhejiang provinces during the summer peak period, but also produced significant social and economic benefits, but also injected a strong impetus into the green development of the two provinces

after the JinSu DC was put into operation, clean hydropower was continuously transmitted from Jinping, Sichuan to Jiangsu when the safety protection device was damaged, which reduced the construction of power plants in the eastern region, met the urgent requirements of building an ecological city, and made great contributions to the structural adjustment of power supply side, energy conservation and emission reduction in Jiangsu and even East China

for three consecutive years, binjin DC has maintained long-term and stable operation at full power during the peak period of power consumption in summer, ensured reliable power supply in East China, effectively reduced air pollution emissions, and played an important role in implementing the national energy conservation and emission reduction policy, promoting the transformation of energy consumption mode, and supporting the establishment of Zhejiang as a "national clean energy demonstration province". Zhejiang has also taken this as a turning point, achieving a balance between power supply and demand and substantially increasing the proportion of clean energy. As of August 7, the first binsongshan Lake (Ecological Park) innovation and entrepreneurship competition was held at the sub venues of CIMC smart valley. The project's centralized roadshow showed that jindc has delivered 107.8 billion kwh of electricity to Zhejiang, which is equivalent to saving 33.07 million tons of coal consumption and 91.63 million tons of carbon dioxide emissions

the three UHVDC transmission lines connect the needs of large-scale clean hydropower transmission in the West with the power demand for economic development in the load center in the East. At this moment, the UHV DC transmission lines across the mountains are carrying clean Hydropower to East China. At the same time, UHV transmission lines are injecting a steady stream of power into China's green economic development

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