On January 8, 2024, after professional accounting, State Grid Mengdong Electric Power completed external power transmission of 183.5 billion kWh in 2023, a year-on-year increase of 23.2%, a record high, and became the provincial power grid enterprise with the largest annual external power transmission in the country. The company delivers more than 180 billion kWh of electricity, which is equivalent to 1.5 times the electricity consumption of the entire society in Beijing in 2022, effectively ensuring the overall energy supply across the country.

Strong Grid Lets Inner Mongolia’s electricity reach the roof of the world

In December 2023, during the critical period when electricity was reaching its peak in winter and maintaining warmth and supply, State Grid Mengdong Electric Power completed the outbound electricity transmission transaction to Tibet for the first time, delivering a total of 16 million kilowatt hours of electricity, realizing the first entry of electricity from Inner Mongolia into Tibet. From the Mengdong power grid to the Tibet power grid, it passed through the Northeast to North China Gaoling back-to-back DC project, Inner Mongolia Shanghai Temple to Shandong Linyi DC project, Sichuan Deyang to Shaanxi Baoji DC project, and made three transfers. After a long journey of 3,500 kilometers, it finally arrived at the roof of the world. It is the beginning of winter. of the Qinghai-Tibet Plateau.

The grassland scenery is beautiful, and the electricity is sent to the whole China. In 2023, State Grid Mengdong Electric Power will give full play to the "backbone" role of the "national team" of a central enterprise, actively explore the potential of optimal configuration of UHV and ultra-high voltage power grids, and deliver Inner Mongolia\'s electricity in an orderly manner to Tibet, Liaoning, Jilin, Beijing, Tianjin, Eleven provinces including Hebei, Shandong, Jiangsu, Zhejiang, Anhui, and Shanghai transmit more than 60% of Inner Mongolia’s total external electricity. This not only promotes the transformation of Inner Mongolia’s energy advantages into economic and social development advantages, but also supports the overall situation of ensuring national energy supply.

Delivering electricity to the places where it is most needed will demonstrate the value of delivery. In July 2023, the temperature in North China, East China and other places was 1-3 degrees higher than the same period in normal years, and some areas exceeded historical extremes. According to information released by the National Energy Administration, in early August 2023, the load of 21 provincial power grids hit a record high. Faced with the superposition of high temperatures and peak electricity consumption in summer, State Grid Mengdong Electric Power continues to accelerate the construction of energy supply guarantee projects. On July 24, 2023, the second phase of the 1,000 kV transmission project of Jingtai Suancigou Power Plant, the last of the six major national energy supply guarantee projects of State Grid Mengdong Electric Power, was officially put into operation. This project is a supporting project for the high-voltage transmission channel from western Inner Mongolia to Tianjin. After it is put into operation, it can deliver 6.6 billion kWh of electricity to the Beijing-Tianjin-Hebei region every year. After the six major national energy supply guarantee projects are put into operation, approximately 60 billion kilowatt-hours of new electricity will be delivered to the Beijing-Tianjin-Hebei-Shandong region every year, equivalent to the annual electricity consumption of 24 million households, effectively enhancing the power supply guarantee in North and East China. ability.

In order to smooth the "highway" for power transmission in Mongolia and ensure the overall supply of electricity across the country, State Grid Mengdong Electric Power has deeply explored the power transmission capabilities of Inner Mongolia\'s "three crosses and three directs" UHV and the 21 ultra-high voltage channels in East Mongolia. Through the Inner Mongolia UHV power grid, 148.2 billion kilowatt-hours of electricity were sent out, and 35.3 billion kilowatt-hours were sent out through the Eastern Mongolia Power Grid except for UHV. The total amount of electricity sent out was 183.5 billion kilowatt-hours, which is about the annual electricity consumption of medium-developed provinces in my country.

The strong power grid is "hardware with new highs in external transmission." Since the establishment of State Grid Mengdong Electric Power in 2009, the State Grid Corporation of China has invested more than 140 billion yuan in Inner Mongolia, continuing to strengthen the construction of power grids at all levels and promoting the backbone grid of the East Mongolia power grid. It jumped from 220 kV to 500 kV ultra-high voltage platform power grid. At the same time, based on the overall situation of Inner Mongolia, the "four-connection and three-direct" UHV project and the transmission-side integrated power grid have been built for the power markets of Shandong, Tianjin, Shanxi, and Jiangsu. The scale of UHV equipment ranks second in the country, forming a two-winged, east-west wing. The "Mongolia Electric Power Transmission" corridor that runs completely across the north and south has a UHV transmission capacity of 46 million kilowatts. As of the end of December 2023, the cumulative electricity transmission has exceeded 477 billion kilowatt hours, making Inner Mongolia an important supplier of the national unified electricity market. authors and contributors.

Currently, Inner Mongolia\'s eighth UHV power transmission channel, the Zhangbei to Shengli 1,000 kV UHV AC power transmission and transformation project, is progressing in an orderly manner and is expected to be completed and put into operation in 2024. The scale of "Mongolian power transmission" will continue to expand.

Market guidance: external green electricity lights up the Hangzhou Asian Games

The Hangzhou Asian Games, which will open on September 23, 2023, will be the first time in the history of the Asian Games that the competition venues will be supplied with 100% green electricity. Among these green electricity is the green electricity from Inner Mongolia. State Grid Mengdong Electric Power Co., Ltd. transmits green electricity across the mountains and seas from the northern Xinjiang of the motherland to Hangzhou through the Xitai DC UHV grid, where it is injected into the Asian Games venues and office sites. 90 million kilowatt-hour green electricity from Inner Mongolia, spanning 1,600 kilometers, lit up the Hangzhou Asian Games.

In order to ensure that green power is delivered to the Asian Games site, "Inner Mongolia Green Power" completed its first journey to Zhejiang as early as August 3, 2023. In a single day, State Grid Mengdong Electric Power traded 2.5125 million kWh of electricity to Zhejiang Province. It meets the daily electricity consumption of about 500,000 households. The external power transmission transaction with Zhejiang Province spans the three regions of Northeast China, North China and East China, passing through two DC UHV channels from Inner Mongolia Zalut to Shandong Qingzhou and Inner Mongolia Ximeng to Jiangsu Taizhou. The scope is wide and the transmission distance is Both of them are the largest in the eastern Mongolia power grid\'s external transmission.

Focusing on external power transmission to Zhejiang Province, State Grid Mengdong Electric Power and State Grid Zhejiang Electric Power have conducted multiple rounds of communication and negotiation to clarify power demand, power curves and transaction prices, scientifically carry out power balance analysis, accurately judge the power supply and demand situation, and will The curve is concentrated in the new energy generation period from 22:00 every day to 7:00 the next day, using the time and peak staggering method to maximize the release of surplus power during the flat valley period.

In order to make new energy power "better distributed" and "delivered more accurately", State Grid Mengdong Electric Power has stimulated the role of the market, relying on the East Mongolia Power Grid and Inner Mongolia UHV integrated power grid external transmission channels, insisting on "mainly medium and long-term transactions of electricity, We will organize new energy power generation enterprises in the region to participate in inter-provincial and cross-regional power transactions by combining spot trading to supplement each other\'s surplus and shortage, and emergency dispatch temporary support, explore "off-peak delivery" transactions of new energy power generation in the region, and accurately analyze and judge both ends of the sending and receiving ends. Based on the supply and demand situation, the external power transmission curve was reasonably determined, and a total of 130 million kWh of electricity was delivered to East China during the night valley section.

Market transactions are "software that reaches new heights in delivery". State Grid Mengdong Electric Power actively promotes delivery transactions to Northeast China, North China and East China, actively carries out inter-provincial spot transactions, expands the scope of delivery of units in East Mongolia, and promotes mid- and long-term inter-provincial delivery. and alternative trading of power generation rights, increase the share of outbound transactions, launch ten measures to fully serve the development of new energy and industrial transfer, optimize the grid connection service process of new units, promote the early connection of new power projects to the grid for power generation, and effectively play the market\'s guiding role to Market means are used to promote power delivery and continue to expand the company\'s delivery scale.

In terms of tapping the potential for outbound delivery, the company took the initiative to strengthen the cultivation of the inter-provincial spot market and promoted the Mengdong unit to participate in inter-provincial spot transactions. The annual spot outbound delivery of electricity was approximately 1.2 billion kilowatt-hours. At the same time, by promoting the continuous operation of medium and long-term transactions and expanding the scope of external power transmission, in 2023, for the first time, the eastern Mongolia units were sent to Tibet, Zhejiang and other provinces. In 2023, 140 million kWh of green power in the region and 260 million kWh of cross-provincial green power were sold. There were 220,000 green certificates issued, an increase of 10 times year-on-year.

Optimize configuration and accelerate the construction of new power system in East Mongolia

State Grid Mengdong Electric Power actively serves the "two major events" of the Inner Mongolia Autonomous Region and helps achieve the modern energy economy. It actively builds a new power system in Eastern Mongolia by promoting the coordinated efforts of all links of source, grid, load and storage. On the power supply side, the company scientifically plans the layout of pumped storage demand, actively studies the planning and layout of coal power, and promotes the flexibility transformation of coal-fired units in operation. On the power grid side, the Kubuqi North-Xiongan South UHV DC project is being promoted. Relying on the Ximeng Green Power Channel to Beijing, we will study the Chifeng-Ximeng-Beijing multi-terminal flexible and direct solution. Promote the construction of the "two vertical and eight horizontal" 500 kV ultra-high voltage platform power grid in eastern Mongolia. On the load side, six types of market-oriented projects with high efficiency services are connected to the network, and 39 market-oriented projects with a load of 6.11 million and 11.8 million kilowatts of new energy are promoted on-site and balanced consumption. Expand electric energy consumption scenarios and system absorption capabilities. On the energy storage side, we should improve the energy storage operation and management system, strengthen energy storage dispatching and operation management, explore and carry out joint optimization control of fire, wind, solar and storage, and use market mechanisms to promote the transformation of decentralized energy storage resources into shared and co-constructed independent energy storage.

Inner Mongolia is vigorously developing a modern energy economy, and "green electricity" and "green energy" are surging everywhere in northern Xinjiang. On November 19, 2023, the Saiyinzhao 500 kV switch station, an important supporting project of the China General Nuclear Power Group Xing\'an League 3 million kilowatt wind power project in the country\'s first batch of large-scale wind power and photovoltaic bases, was put into operation, marking the delivery of new energy to eastern Mongolia. Ability to enter "wide lanes".

The person in charge of the China General Nuclear Power Group project said that during the construction process of supporting power grid projects, State Grid Mengdong Electric Power was determined to "open roads when encountering mountains, build bridges when encountering water, and ensure completion on schedule" to ensure safety, quality, and progress. The construction and operation tasks were completed safely and efficiently, making outstanding contributions to the full-capacity operation of the project.

In order to build this "wide lane", State Grid Mengdong Electric Power made all-out efforts in a pragmatic and efficient manner. It only took one month to complete the preliminary procedures, only 4 days from compliance to approval, and only 4 and a half months from start of construction to operation. , ensuring that new energy projects are "connected to the grid as soon as they are completed", laying a "highway" for large-scale wind power and photovoltaic bases to be exported, and creating a new speed for the construction of the eastern Mongolia power grid.

State Grid Mengdong Electric Power gives full play to the role of the large power grid in optimizing the allocation of resources and coordinates the "two-wheel drive" of internal sales and external delivery. In 2023, the maximum power supply load is 8.21 million kilowatts and the maximum external power supply is 33.51 million kilowatts, a year-on-year increase of 18% and 30%, which not only supports the overall situation of ensuring power supply nationwide, but also ensures reliable power supply in eastern Mongolia. In 2023, the electricity sales of the East Mongolia Power Grid will be 45.05 billion kilowatt-hours, a year-on-year increase of 6.33%.

At the same time, State Grid Mengdong Electric Power Co., Ltd. is focusing on fast drying to serve the high-quality development of new energy in Inner Mongolia. In 2023, the new energy installed capacity of Mengdong Power Grid will reach 24.72 million kilowatts, accounting for more than 54% of the total installed capacity, which is 12.36 times that at the beginning of its establishment. Achieve the 2025 phased goals of "two firsts" and "two surpasses" in the construction of Inner Mongolia\'s new power system ahead of schedule. In addition, the new energy power generation of the East Mongolia Power Grid has reached 46.2 billion kilowatt-hours, accounting for more than 30% of the total power generation. The new energy utilization rate has stabilized at more than 96%. The high-quality development of new energy has achieved remarkable results.

In order to speed up the construction of a new power system in eastern Mongolia, State Grid Mengdong Electric Power is based on Inner Mongolia\'s location and resource advantages, coordinating grid improvement, grid connection projects, regulatory operations, and energy storage construction, and promoting the simultaneous development of sources, grids, loads, and storage, in accordance with " The new power system will be initially built in 2025, and the new energy installed capacity of the East Mongolia Power Grid will exceed 55 million kilowatts, with new energy installed capacity accounting for 68.7%; the new energy power generation will reach 110 billion kilowatt-hours, which is equivalent to thermal power. Ratio, it will save 33.5 million tons of standard coal, reduce carbon dioxide emissions by 89 million tons, and new energy power generation will account for 60%, effectively stimulating green momentum and pragmatically promoting high-quality economic and social development in Inner Mongolia.

Source: State Grid Inner Mongolia Eastern Electric Power Co., Ltd. Text by Ma Chao