Faced with the enormous pressure of insufficient transportation capacity for "coal coal and east transportation," coal transportation and power transmission are simultaneously carried out. Transmission-based power transmission, which is mainly based on transmission, has become the best way for energy delivery.
On February 16, the National Spring Festival was over. A large number of coal transportation trains in Xinjiang began to replace passenger cars and rushed on the busy outbound railway line. From Hami, Xinjiang, to the Jiayuguan-Gansu highway, a coal-pull car with a carrying capacity of over 100 tons was also running at full speed.
Behind the prosperity of one faction, it reflects the confusion of how Xinjiang's local coal resources can be transformed more reasonably.
In recent years, the coal resources in the eastern part of China have dried up. The development strategy of â€œcoal coal east transportâ€ put forward by the country has pushed the Hami near the interior to the main battlefield of â€œcoal coal east transportationâ€.
Behind the door of Gao Zhimingâ€™s office in the deputy section of the Hami section of the Urumqi Railway Bureau, there is a railway construction plan. â€œIn Xinjiang, only the coal of the Hami region can be shipped. By 2015, Hami will build a coal base of 100 million tons of coal. The existing old station cannot be adapted to the development situation. In 2009, the Hami Station began functional transformation and separated the passenger and cargo special lines. Build strategic loading points and expand capacity."
Although Xinjiang is making every effort to break the bottleneck of transportation, it is striving to realize the commercialization of commercial coal. However, in 2012, the transfer of 50 million tons of coal to the Mainland, the transfer of 100 million tons in 2015, and the transfer of 500 million tons in 2020 are still placing great pressure on local transportation.
On the way to the eastward entry of coal trucks, the 750-kilovolt interconnection project between Xinjiang and the Northwest Power Grid is transforming tens of thousands of tons of coal resources into electricity from the air and sending them to the Mainland.
On November 3, 2010, with the successful operation of the 750-kilovolt interconnection project between Xinjiang and the Northwest Power Grid, coal transportation and transmission were concurrently carried out, and the â€œtransmission of powerâ€ method, mainly transmission-based, finally came out. Xinjiang's power resources span the Tianshan Mountains and entered the mainland.
As of the end of 2011, the State Grid Corporation transmitted 3.2 billion kilowatt-hours of electricity to the inland through the 750-kilovolt Xinjiang and Northwest interconnected projects, which is equivalent to supporting 1.2 million tons of electric coal in the eastern region, effectively mitigating the tight electricity supply and power coal in the eastern and central regions of China. Transport capacity is tight.
"Multiple sources" need to be sent out in bundles
Diversified energy resources are a trump card in Xinjiang. In addition to coal, Xinjiang also has abundant resources such as oil, natural gas, wind, and light. In order to be able to bundle and send these green energy, the construction of UHV "Jiejiang Power Transmission" has become the only choice.
In order to completely free Xinjiang from the dilemma of â€œenergy isolated islandsâ€, it is not enough to simply connect the Xinjiang power grid with the inland network. It is necessary to build a stronger UHV power grid so that more green energy can be converted into electrical energy and transported in time. Farther away.
Indeed, resources are a trump card in Xinjiang: oil forecasted resources were 20.86 billion tons, accounting for 30% of the country's total onshore oil resources; natural gas forecasted resources were 10.3 trillion cubic meters, accounting for 34% of the country's onshore natural gas resources. Coal's predicted reserves of 2.19 trillion tons, accounting for 40% of the country's forecasted reserves; total annual sunshine hours of 2550 to 3500 hours, ranking second in the country; Dabancheng, Alashankou, Santanghu-Namaohu, southeast of Hami In the nine wind districts such as Tacheng Laofengkou, the annual utilization hours exceed 2000 hours, and the cumulative installed capacity of wind power will exceed 10 million kilowatts by 2020.
Among them, Hami is particularly favored by the multiple resources of coal, wind, and light. Hami's deputy party secretary Zhang Wenquan proudly called Hami the "Coal Capital," "Wind Pool," and "Optical Valley" channels: "Hami has a light during the day, wind at night, and strong complementarity. It is the best combination of resources. In addition, Hami has recently invested in the center of the Central Plains load center with low investment and low losses, and it is a bridgehead for Jiangdong East to send."
In May 2011, Zhou Yongkang, member of the Standing Committee of the Political Bureau of the CPC Central Committee and secretary of the Central Political and Law Commission, went to Xinjiang for an inspection. The aircraft arrived at the Xinjiang 750-kilovolt Hami substation and the State Grid Energy Dananhu power plant. Zhou Yongkang stressed that we must understand the development of Xinjiang from a strategic height and speed up the work of sending out Xinjiangâ€™s external power sources. The scale of Xinjiang's power transmission during the â€œTwelfth Five-Year Planâ€ period reached 30 million kilowatts, ensuring that Xinjiangâ€™s Xinjiang Electric Power Co., Ltd. sent UHV projects, etc. Major projects will be put into production as early as possible and will be effective as soon as possible, and Xinjiangâ€™s resource advantages will be transformed into economic advantages as soon as possible to solve the power shortage problem in the central and eastern regions.
Zhang Wenquan, deputy secretary of the Hami Prefectural Party Committee, said with a feeling: "The UHV is not an ordinary transmission line, but the political line, economic line, stable line, and development line in the sky."
U.S. grand force grand blueprint unfolds slowly
In the near future, a strong UHV power grid with stronger transmission capacity, longer transmission distance, and greater safety and reliability will connect Xinjiang's wind power, photovoltaic, and thermal power bases and transfer Xinjiang's energy resources to more areas where it is needed.
In order to achieve the goal of 30 million kilowatts of delivery, the State Grid Corporation of China has clearly outlined the grand blueprint of the UHV â€œJiangdong Power Transmissionâ€: except for the Haminan-Zhengzhou Â±800kV UHVDC project, the â€œ12th Five-Year Planâ€ period Xinjiang will also construct Hami North-Chongqing Â±800 kV and Zhundong-Sichuan Â±1100 kV UHV DC projects, and three UHV DC projects will send 25 million kilowatts of electricity. In addition, the 750-kilovolt power transmission project between Haminan-Shazhou-Yuka-Chaidamu, the second communication channel between Xinjiang and Northwest China, will be constructed, and the existing Hami-Dunhuang 750-kilovolt exchange channel will be used to send electricity to the northwest to exchange power of 5 million kilowatts. .
From Henan Province, 2260 kilometers away from Hami, it has already seen a way to advance its way out of resource difficulties. On May 20th, 2011, Guo Gengmao, governor of Henan Province, presided over a provincial office meeting and requested that energy input such as â€œJiangdian enters Yuyuâ€ be actively carried out, and expand cooperation with Xinjiang in the development of coal gas resources and the construction of supporting power plants at the sending end. Strategic cooperation.
On May 24, 2011, the National Energy Administration agreed that Xinjiang launched the Hami South-Zhengzhou UHV DC project to carry out preliminary work. At present, the project is progressing in an orderly manner. Another report on the feasibility study of the Hami North-Chongqing UHV DC project and the Zhundong-Sichuan UHVDC project has been completed. The application for the preliminary work has also been reported to the National Energy Administration.
Xiao Renjun, Director of the Energy Division of Xinjiang Autonomous Region Development and Reform Commission, who is concurrently the deputy head of the office of the Leading Group of Xinjiang Electric Power Delivery, believes that UHV is an important form of resource transformation in Xinjiang and can enable Xinjiangâ€™s energy resources to participate in the allocation of resources throughout the country. "Three China" area power gap. Taking the Hami South-ZhengzhouÂ±800 kV UHVDC project as an example, according to preliminary calculations, after the completion of the project, more than 37 billion kilowatt-hours of electricity can be transferred to Henan Province, and more than 18 million tons of coal will be transformed on-site.
Radiation effect will promote economic and social development
The acceleration of the UHV "Jiangmin Power Transmission" project will not only bring new opportunities for the development of the local electrical equipment industry, but will also greatly promote and drive the local economic development in Xinjiang in the future.
With the acceleration of UHV projects in Xinjiang, the related electrical equipment industry has ushered in the dawn of development.
On July 8, 2011, the UHV base of the Xinjiang Power Transmission and Transformation Technology Production Park of TBEA was completed, and a 1700 kV extra-high voltage transformer was built. This is also the UHV test transformer with the highest voltage level in the world. It means that Xinjiangâ€™s high-end equipment for power transmission and transformation has its own research and development capabilities and detection methods that have reached the worldâ€™s leading level, providing reliable equipment support for the smooth construction of UHV projects in Xinjiang.
Entering 2012, the progress of the UHV "Jiangmin Power Transmission" has accelerated. On February 3, 2012, the Xinjiang Autonomous Region held a symposium on the construction of Xinjiangâ€™s external transmission of UHV power transmission projects. The Party Committee of the autonomous region and the Peopleâ€™s Government of the Autonomous Region decided to expedite the preparatory work for the UHV â€œJiangdong Power Transmission Projectâ€ and requested that each project be along the route. The government and related functional commissions and office bureaus fully support and actively cooperate with each other to streamline the handling procedures and special cases. The U.S. high-voltage project site and transmission corridors are integrated into the overall planning of the local economy and social development. Formulate detailed control plans for all regions, coordinate and manage them in a unified manner.
Xiao Renjun said that the implementation of the â€œGDD-Jiangdong Transmissionâ€ UHV DC transmission project will have a very effective effect in promoting and stimulating local economic development in the future. According to the plan, the three UHV DC projects will require an installed thermal power capacity of approximately 36 million kilowatts, wind power capacity of 10 million kilowatts, and annual transmission of approximately 195 billion kwh, which will consume 68 million tons of raw coal annually. It can directly drive the investment in Xinjiang to reach 300 billion yuan, directly creating more than 30,000 jobs, and indirectly can solve the employment problem for more than 300,000 people.
According to the previously signed framework agreement, the total investment of the five major power generation groups in Xinjiang in the next 10 years will exceed 500 billion yuan. At the same time, the UHV "Gate Outsourcing" project also has a positive effect on the building materials industry such as steel, cement, and timber, the machinery and electrical equipment manufacturing industry, and high-tech personnel in the autonomous region.
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