Polaris power transmission and distribution network news: on April 24, China Southern Power Grid Corporation released the white paper on digital power grid promoting the construction of a new power system with new energy as the main body (hereinafter referred to as the white paper) in Guangzhou.
"Digital power grid will become the best form to carry the new power system." In the white paper, China Southern Power Grid Corporation systematically expounds the background and significance of the new power system with new energy as the main body, the new situation and new requirements, and the three significant features of "digital empowerment, flexibility and openness, and green and efficient". China Southern Power Grid Corporation will take multiple measures to build a new power system with new energy as the main body, relying on the construction of digital power grid, to serve the realization of the strategic goals of carbon peak and carbon neutrality.
Digital empowerment: providing "core algorithm" for efficient consumption of new energy
According to the white paper, the new power system will present a deep integration of digital and physical systems, and lead and optimize energy flow and business flow with data flow. With data as the core production factor, the information of power supply, power grid, load and energy storage can be accessed, and the power generation side (power plant, etc.) can achieve "comprehensive observability, accurate measurability and high controllability". The power grid side (power grid enterprise) forms a regulation system integrating cloud and edge, and the power consumption side (power users) can effectively aggregate a large amount of adjustable resources to support real-time dynamic response.
According to the white paper, China Southern Power Grid Corporation proposed the strategic deployment of digital power grid construction in 2019. Digital power grid is a new energy ecosystem formed by taking cloud computing, big data, Internet of things, mobile Internet, artificial intelligence, blockchain and other new generation digital technologies as the core driving force, taking data as the key production factor, taking modern power energy network and new generation information network as the foundation, and continuously improving the level of digitalization, networking and intelligence through the deep integration of digital technology and energy enterprise business and management, It has the characteristics of flexibility, openness, interactivity, economy and sharing, making the power grid more safe, reliable, green, efficient and intelligent.
Digital power grid will become the best form to carry the new power system. Relying on the powerful "power + computing power", China Southern Power Grid finds out the operation rules and potential risks of the power grid through data relations through massive information data analysis and high-performance computing technology, so as to realize the safe and stable operation of the power system and the large-scale optimal allocation of resources, so that the power grid has strong perception ability, intelligent decision-making ability and fast execution ability. This has pushed the "fast forward" button for clean energy consumption in Guangdong, Guangxi, Yunnan, Guizhou and Hainan.
By the end of 2020, the installed capacity and electricity consumption of non fossil energy in the five provinces and regions will account for 56% and 53% respectively, ranking among the top in the world. The utilization ratio of wind power and photovoltaic power generation will both reach 99.7%. Remarkable achievements have been made in the transformation of regional energy structure.
According to the white paper, China Southern Power Grid Corporation will accelerate the construction of digital power grid, continue to build and improve a series of digital business technology platforms, and make them have strong data management capabilities, super computing capabilities and data-driven business capabilities; Accelerate the digital transformation of power grid management, promote the efficient coordination of power grid planning, construction, operation and maintenance, materials, dispatching, marketing and other disciplines, improve the operation efficiency of enterprises, and ensure the efficient service level for many new energy customers; Increase supporting investment in the construction of 5g base stations, Internet of things, electric vehicle charging piles and other new infrastructure; Connect with the national industrial Internet and digital government, make full use of the advantages of power grid enterprises in computing power, algorithms and data resources, promote close interaction between the government, upstream and downstream industries and users, guide the orderly flow of energy, data and services, and promote open cooperation, mutual benefit, symbiosis and collaborative innovation among stakeholders in the energy ecosystem.
Flexible and open: support new energy to become the main power supply
According to the white paper, in the new power system, the power grid plays a more significant role as the core hub to absorb a high proportion of new energy. The flexible interconnection form and digital control technology of "inter provincial backbone power grid + small and medium-sized regional power grid + distribution network and Microgrid" will make the power grid more flexible and controllable, and realize the wide access of new energy according to resource endowment and local conditions. The flexible interconnection of large power grids promotes the further improvement of the ability of mutual assistance and sharing of resources. The distribution network presents a coordinated development trend in various forms, such as AC / DC hybrid flexible power grid and micro grid. As an important solution to improve power supply reliability and high-permeability distributed power grid connection, smart micro grid will be gradually promoted and applied in urban centers, industrial parks, remote areas, etc. In addition, new modes of diversified and coordinated development, such as new energy + energy storage, new energy + load + energy storage, will continue to emerge.
At present, the west to East power transmission of China Southern Power Grid has formed a "eight alternating and ten continuous" power transmission channel, with a power transmission scale of more than 58million kW and an annual power transmission capacity of more than 230billion kwh. It has its own large-capacity UHV multi terminal flexible DC transmission technology, and is in a leading position in the planning, construction and operation technology and practice of large-scale AC and DC power grids. At the same time, we will promote the construction of digital scenarios such as UAV patrolling of transmission and distribution lines, digital substations, intelligent distribution rooms, smart microgrids, and smart parks. Artificial intelligence is widely used in power grid equipment patrolling, intelligent customer service, load forecasting and other businesses.
China Southern Power Grid Corporation will rely on digital technology to enhance the "observable, measurable and controllable" level of new energy, promote the power system to have a more sensitive "five senses" and a more intelligent "brain", and support new energy power generation equipment to participate in the power system regulation process as the main power supply.
According to the white paper, China Southern Power Grid Corporation will continue to use digital technology to build a strong main grid and flexible distribution network; Make overall use of wind power, photovoltaic, biomass and other regional distributed energy resources, build AC / DC hybrid distribution network and smart microgrid according to local conditions, continue to strengthen the digitalization and flexibility of distribution network, and improve the bearing capacity of distributed power generation.
During the "14th five year plan" and "15th five year plan", China Southern Power Grid Corporation will promote the five provinces and regions in southern China to increase the installed capacity of 100million kW of wind and solar new energy respectively, and the installed capacity of new energy will increase from 50million kW at present to 250million kw by 2030, supporting the realization of carbon peak ahead of schedule.
The white paper also proposed that China Southern Power Grid Corporation vigorously implement the innovation driven strategy and enhance the scientific and technological support and industrial driving force for building a new power system. China Southern Power Grid Corporation will actively carry out basic research on the operation mechanism and development form of the new power system, basic theories and methods of data-driven new power system analysis and control, make breakthroughs in large-scale grid connection and consumption of new energy power generation, digital power grid, power dedicated chips, flexible interconnection of power grid, advanced energy storage technology, virtual power plant, etc., and promote the deep integration of digital technology and power technology, Build a national innovation platform to support the new power system, and form a new power system key technology and standard system with China's independent intellectual property rights. Accelerate the independence and upgrading of core technologies in key areas, and promote the formation of a complete and world-class power industry chain.
Green and efficient: big data technology helps users tap energy saving potential
It is predicted that by 2030 and 2060, China's new energy power generation will account for more than 25% and 60% respectively, and the power supply will gradually move towards zero carbonization. According to the white paper, new energy will become the main body of new power supply and occupy a dominant position in the power supply structure.
The process of "new electrification" of end energy consumption will also be accelerated. The electrification level of terminal energy consumption in the three major fields of industry, construction and transportation will increase from the current 30%, 30% and 5% to about 50%, 75% and 50% in 2060. The rapid development of digital economy will also promote the further improvement of the electrification level of terminal energy consumption.
With the transformation of the role of new energy and traditional power supply, effective and perfect power market support is needed to more efficiently coordinate the interest demands of different market players and realize the full investment and optimal allocation of all factor resources.
According to the white paper, China Southern Power Grid Corporation will use digital technology to promote the energy consumption revolution and promote the wide formation of green production and lifestyle. During the "13th five year plan" period, China Southern Power Grid continued to promote the substitution of electric energy, and made positive progress in key areas such as electric boilers, electric cold storage, port power, etc. during the "13th five year plan" period, about 100billion kilowatt hours of electricity was substituted in total. In 2020, the proportion of electric energy in the five provinces and regions accounted for 32% of terminal energy consumption, an increase of 4 percentage points over 2015. At the same time, the southern region (starting from Guangdong) power spot market and regional FM auxiliary service market took the lead in carrying out settlement and trial operation in China, and the construction of power market is in the forefront of the country.
China Southern Power Grid Corporation will use digital technology to build a modern power supply service system suitable for the new power system, improve service efficiency and customer experience, support business innovation, and help users continuously release their demand potential; Through the Internet of things and blockchain technology, we can aggregate a large number of user side adjustable resources, vigorously build virtual power plants, guide users to use electricity reasonably, and promote two-way interaction between the generation side and the load side.
China Southern Power Grid Corporation will also assist users to tap energy-saving potential through big data technology, promote the transformation of energy consumption from a single, passive and universal utilization mode to an efficient utilization mode integrating multiple demands, active participation and customization, and promote the development of electric vehicles, electric energy substitution, energy conservation and emission reduction, and comprehensive energy services; Accelerate the construction of a unified power market in the southern region, enrich the trading varieties of the power market, and explore flexible and diverse market-based demand response trading modes.
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