Building a strong smart grid with UHV as the backbone grid and coordinated development of power grids at all levels is an important support for promoting clean and low-carbon energy transformation. During the national two sessions this year, some representatives and members concerned about energy transformation called for improving the power grid’s ability to optimize the allocation of resources, promoting the greening of traditional industries such as coal and electricity, coordinating the development of new energy, focusing on electricity, reshaping the energy pattern and serving green development.
Accelerate the development of UHV and promote energy transformation and upgrading
In recent years, with the rapid economic and social development of Hunan Province, the power consumption level of the province has been significantly improved. In 2018, the total electricity consumption in Hunan reached 174.52 billion kwh, a year-on-year increase of 10.4%; The maximum load of Hunan power grid exceeded 30 million KW for the first time, reaching 30.08 million KW, a year-on-year increase of 13.2%. During the peak period of power consumption in summer and winter, Hunan Province has taken different degrees of orderly power consumption measures, and the power supply guarantee capacity has reached the limit.
Hunan’s energy endowment is insufficient, and more than 80% of the coal used for thermal power in Hunan Province is imported from other provinces, which is not conducive to the development of thermal power; More than 98% of hydropower resources have been developed; At present, wind power and solar energy are difficult to be used as basic supporting power supply. Meng Qingqiang, deputy to the National People’s Congress and chairman and party secretary of State Grid Hunan Electric Power Co., Ltd., believes that strengthening the construction of cross provincial and cross regional transmission channels and greatly introducing power from other provinces into Hunan is expected to become an effective way to solve the problem of power supply in Hunan.
Meng Qingqiang introduced that at present, the external power in Hunan mainly comes from Gansu clean energy power generation transmitted by Qishao DC and the Three Gorges and Gezhouba Hydropower transmitted by Hubei Hunan connecting line. Among them, the maximum power supply capacity of Qishao DC is 5 million KW, and the three-way Hubei Hunan connecting line is 2.7 million kW. According to the security requirements of the power grid, the combined maximum power supply capacity of the two is about 6 million KW, which bears about 20% of the load of the whole province and plays a positive role in ensuring power supply. The next few years will be a key period for Hunan to build a well-off society in an all-round way and build a strong socialist modern province. It is predicted that in 2020 and 2025, the maximum load of Hunan power grid will be about 35.2 million KW and 48.6 million KW respectively; In 2020, the power shortage of Hunan power grid will reach more than 6 million KW, and by 2025, the power shortage of Hunan will expand to more than 9 million KW, which can not meet the needs of high-quality development and the people’s normal production and living power demand.
Meng Qingqiang said that to solve these problems, the key is to adhere to the national energy development strategy, take a road of transformation and development of diversified supply of traditional energy and emerging energy, coordination and mutual assistance between energy outside the region and provincial power supply, boost Hunan’s energy transformation and upgrading, and realize the sustainable development of energy and power.
Meng Qingqiang suggested speeding up the approval of Yazhong Jiangxi UHV DC project. The project passes through Sichuan, Guizhou, Hunan and Jiangxi provinces. At present, it is basically clear to send power to Hunan Province and Jiangxi Province at the ratio of 5:5. This can systematically solve the problem of hydropower transmission in Sichuan and effectively alleviate the power shortage in Jiangxi and Hunan provinces.
At present, Hunan has preliminarily planned to introduce the second circuit of UHVDC from energy bases such as Inner Mongolia and Xinjiang, basically selected the site of the receiving converter station in the province, and pre controlled and protected the site. Meng Qingqiang suggested to support the introduction of the second UHV DC in Hunan, carry out the planning demonstration of the UHV channel of “foreign power into Hunan” in the western energy base as soon as possible, promote the completion and operation of the project during the 14th Five Year Plan period, and ensure the medium and long-term power supply in Hunan.
Electric power is the backbone of high-quality economic and social development
In 2018, as a basic industry, the power industry will play a great role in the economic and social development of Ningxia Hui Autonomous Region. Xu Ning, deputy to the National People’s Congress and party secretary and director of the development and Reform Commission of Ningxia Hui Autonomous Region, said that Ningxia, as the main battlefield of the country’s western development, is inseparable from a safe and reliable power supply to fully enter a well-off society at the same time as the whole country by 2020.
In recent years, with the significant improvement of power grid guarantee capacity and service level, the construction of power transmission channels has been accelerated. Three ultra-high voltage and ultra-high voltage DC transmission projects, Ningdong Shandong, Ningdong Zhejiang and Shanghai Miao Shandong, have been completed and put into operation one after another, so that the transmission capacity of Ningxia power grid has reached 20 million KW, and the advantages of local coal power and new energy resources have been brought into play. The power transmission channel has effectively promoted the adjustment of local economic structure and made an important contribution to transforming resource advantages into economic advantages in Ningxia.
Xu Ning introduced that in 2018, Ningxia Hui Autonomous Region implemented precise policies to cope with the downward pressure on the economy, with an annual economic growth of 7%; Comprehensively consolidate the achievements of iron and steel, coal, electrolytic aluminum and other industries in resolving excess capacity, promote the reduction of enterprise leverage, and effectively reduce enterprise logistics and power costs; We have fully implemented the key tasks of poverty alleviation and supported the implementation of a large number of infrastructure projects benefiting poor areas and poor people; Multiple measures were taken simultaneously to expand precision and effective investment, and the proportion of industrial investment increased by 4.2 percentage points. “These achievements are closely related to the support of power grid enterprises,” Xu Ning said.
Xu Ning mentioned that this year, Ningxia Hui Autonomous Region has defined nine key tasks, and some tasks involving the overall situation need to integrate multi-party resources and pool work forces. He said that in terms of the attraction of attracting investment, Ningxia can do better in optimizing the investment environment, and power supply capacity and power supply services are particularly important. It can be said that every detail and link behind the high-quality development of local economy and society is inseparable from the support of electricity.
Xu Ning believes that at present, China’s economic development has entered a new era, from the stage of high-speed growth to the stage of high-quality development. As an economically underdeveloped region, Ningxia’s internal and external environment for development is also undergoing profound changes. The global economy is recovering in twists and turns, the world new scientific and technological revolution and industrial development are in the ascendant, and the pace of innovation and development in China is accelerating. The traditional resource advantage of Ningxia is weakening, and the ecological and environmental constraints are becoming increasingly tight. It is urgent to turn the main direction to high-quality development.
Xu Ning said that this year’s work report of the government of Ningxia Hui Autonomous Region proposed to continue to promote the transformation of old and new kinetic energy, further consolidate the foundation of high-quality development, promote traditional industries such as coal and electricity to move towards high-end, intelligent and green, improve the coal and electricity linkage market response mechanism, and improve the level of the whole industrial chain. This puts forward higher requirements for the next development of Ningxia electric power industry. As a basic industry, electric power should always be the backbone in the high-quality development of local economy and society.
Optimizing the layout of pumping and storage power stations and promoting the coordinated development of new energy
“Pumped storage power station is a high-quality fast and flexible regulated power supply. It is a power grid energy storage facility with mature technology, reliable operation, economic efficiency and large-scale development. The construction of pumped storage power station is an important measure to solve the problem of new energy consumption and promote the construction of a clean, low-carbon, safe and efficient energy system.” deputy to the National People’s Congress, Qi Chunfeng, part-time vice chairman of the trade union of State Grid Jibei Power Co., Ltd. and director of the operation and maintenance room of the operation and maintenance department of Chengde Power Supply Company, has been paying attention to the development of new energy.
Since the 18th CPC National Congress, China has accelerated the development of clean energy, especially new energy, and promoted the transformation of clean and low-carbon energy, which has achieved remarkable results. China has become the country with the largest installed capacity of clean energy and new energy. Qi Chunfeng introduced that at present, there are 22 pumped storage power stations in operation with an installed capacity of 19.23 million KW, and 26 under construction with an installed capacity of 36.15 million KW; In the 13th five year plan, 29 buildings with a total investment of 36.65 million kilowatts have been started, with a total investment of more than 200 billion yuan. At present, 16 buildings with a total investment of 21.55 million kilowatts have been started. The construction of pumped storage power station can effectively alleviate the waste of wind and light and promote the consumption of new energy; Reduce the mediation of thermal power units, improve the operation conditions of thermal power units, reduce the unit energy consumption of power system, reduce raw coal consumption, reduce carbon dioxide and sulfur dioxide, and effectively prevent and control air pollution.
“I learned that the State Grid Corporation of China has optimized the operation mode of pumped storage power station from ‘one pumping and two generating units’ to’ two pumping and two generating units’, reducing the power abandonment at night and noon and fully serving the consumption of new energy.” Qi Chunfeng said that Chengde Power Grid currently has a total installed capacity of 11 million kilowatts, including 4.21 million kilowatts of grid connected wind power The installed capacity of thermal power is 5.22 million KW and that of photovoltaic and distributed power is 1.54 million KW. However, the load level in Chengde is only about 2 million KW, and the overall consumption and transmission situation is relatively severe. The total installed capacity of Hebei Chengde Fengning pumped storage project under construction is 3.6 million KW. After being put into operation, it can significantly alleviate the pressure of new energy transmission, effectively enhance the peak shaving capacity of power grid and greatly improve the comprehensive energy utilization efficiency.
“The planning of pumped storage power stations in the 13th five year plan is mainly concentrated in the eastern region, and the new energy in the western region has not been further developed.” in view of how to promote the sustainable and healthy development of pumped storage power stations, Qi Chunfeng suggested to further optimize the layout of pumped storage power stations, accelerate the start of the layout and site selection of pumped storage power stations in the western region, strengthen the protection of station sites, and promote “paying equal attention to both East and west” Develop pumped storage, improve the regulation capacity of the power grid in the western region, and ensure the development of clean energy in the western region.
He also suggested that we should promote the diversification of investment in pumped storage power stations and speed up the establishment of a reasonable electricity price formation mechanism and cost sharing and dredging mechanism for pumped storage to meet the requirements of the new round of power reform. In addition, scientifically plan and orderly develop distributed energy storage to ensure the coordinated development of pumped storage and distributed energy storage projects.