March 1, the National Development and Reform Commission, the National Energy Board issued the "on the new situation of distribution grid quality development of the guiding opinions" pointed out that, by 2025, the distribution grid network structure is stronger and clearer, the power supply and distribution capacity is reasonably abundant; distribution grid carrying capacity and flexibility significantly improve, with about 500 million kilowatts of distributed new energy, 12 million or so charging piles access capacity; active distribution grid and the large power grid The active distribution grid is compatible with the power grid, the digital transformation of the distribution grid is comprehensively promoted, and the open sharing system is gradually formed to support diversified and innovative development; the intelligent regulation and operation system is accelerated and upgraded, and the coordination and interaction of the vehicle and network and the new technologies of network-type new energy and network-type energy storage are popularized in the areas with the conditions.
The following is the original text
National Development and Reform Commission National Energy Administration on the new situation of the
Guidance on high-quality development of distribution networks
NDRC Energy [2024] No. 187
Development and Reform Commission and Energy Bureau of each province, autonomous region, municipality directly under the central government, Xinjiang Production and Construction Corps, Beijing Municipal Commission of Urban Management, the dispatching organizations of National Energy Administration, and relevant power enterprises:
As an important public infrastructure, power distribution network plays an important role in guaranteeing power supply, supporting economic and social development, and serving to improve people's livelihood. With the advancement of the construction of new power systems, the distribution network is gradually transformed from simply accepting and distributing electricity to the user's power network into a power network that integrates and interacts with the source network and storage, and flexibly couples with the upper power grid, and its function in promoting the consumption of distributed power sources in the vicinity and carrying new types of loads is becoming more and more significant. In order to promote the high-quality development of the distribution network under the new situation, and help build a new type of power system that is clean and low-carbon, safe and abundant, economically efficient, synergistic between supply and demand, and flexible and intelligent, the following opinions are put forward.
I. General requirements
(i) Guiding philosophy
Guided by Xi Jinping's thought of socialism with Chinese characteristics in the new era, comprehensively implementing the spirit of the 20th CPC National Congress, deeply implementing the new energy security strategy of "four revolutions and one cooperation", keeping in view the objectives of power supply and transformation under the new situation, expanding the investment in distribution network in an orderly manner, improving the efficiency of the investment, collaborating to promote the construction and transformation of the distribution network, and systematically promoting The distribution network and the scientific integration and development of source, load and storage, comprehensively enhance the power supply guarantee ability and comprehensive carrying capacity of urban and rural distribution network, assist the construction of new energy system and new power system with the high-quality development of distribution network, serve the economic and social development, promote the realization of the "double-carbon" goal, and accelerate the process of Chinese-style modernization.
(ii) Basic principles
Insisting on safe power supply and enhancing security capacity. It will take the safe and reliable supply of electricity as its primary task, plan and build distribution networks in an appropriate and forward-looking manner, continue to optimize the network structure, maintain a reasonable power supply margin, and narrow the gap between urban and rural power supply. It has also appropriately raised the standard of defense, collaborated to enhance the level of emergency protection for important users, and strengthened the foundation of intrinsic safety.
Adhere to green development and help low-carbon transformation. Accelerate the construction and transformation of the distribution network and intelligent upgrading, and strengthen the synergistic development of the source network and storage. Effectively meet the needs of distributed new energy development, fully support the construction of electric vehicle charging infrastructure system, and actively promote the diversified development of new energy storage, and comprehensively promote the green and low-carbon transformation of energy.
Adhere to the integration, strengthen the planning leadership. Firmly establish a systematic thinking, strengthen the distribution network planning and national development strategy, urban and rural development planning, industrial development planning in the preparation, implementation process of convergence and interaction. Deepen the multi-sectoral linkage and collaboration to achieve the scientific and orderly configuration of the source network and storage resources.
Adhere to scientific management and promote quality and efficiency. Establish and improve the scientific development mechanism of power distribution network, and strengthen the whole process management. Innovate the operation and management mode of power distribution network, improve the standardization level, promote the R&D and application of advanced science and technology, deepen the reform of electric power system and mechanism, and further improve the quality and efficiency of power distribution network.
(iii) Development goals
Focusing on the overall goal of building a new type of energy system and a new type of power system, we will create a new type of power distribution system that is safe, efficient, clean, low-carbon, flexible and intelligent, and, on the basis of enhancing the ability to maintain supply, we will promote the transformation of the distribution network from a traditional "passive" one-way radiation network to an "active" two-way interactive system. On the basis of enhancing the ability to maintain supply, the distribution grid will be transformed from a traditional "passive" one-way radiation network to an "active" two-way interactive system in form, and from a single service body of power supply and distribution to a platform for efficient allocation of resources of source, network and storage.
By 2025, the distribution grid network structure will be stronger and clearer, and the power supply and distribution capacity will be reasonably abundant; the carrying capacity and flexibility of the distribution grid will be significantly improved, and the distribution grid will have the access capacity of about 500 million kilowatts of distributed new energy and about 12 million charging piles; the active distribution grid will be compatible with the big grid, the digitalization transformation of the distribution grid will be promoted comprehensively, and the open and sharing system will gradually take shape, and it will support the diversified and innovative development; and the intelligent control and operation system will be upgraded and upgraded faster. The intelligent regulation and operation system will be upgraded at a faster pace, and new technologies such as vehicle-network coordination and interaction and grid-type new energy and grid-type energy storage will be promoted in areas with the conditions.
By 2030, it will basically complete the flexible, intelligent and digital transformation of the distribution grid, realize multi-level synergy of the main distribution microgrid, massive resource aggregation and interaction, and plug-and-play for diversified users, effectively promote the integration and development of the distributed smart grid and the big grid, better meet the needs of distributed power supply, new energy storage and the development of all kinds of new industries, and provide strong support for the construction of a high-quality charging infrastructure system with wide coverage, moderate scale, reasonable structure and perfect function, and provide strong support to realize the goal of non-fossil energy consumption with high-level electrification.
Second, make up the short boards of the power grid, and strengthen the foundation of security of supply
(i) Comprehensively improving power supply security capacity. Appropriately ahead of the planning of power distribution points, optimize the layout of power grid facilities, to create a strong and flexible power grid network. Accelerate the upgrading of power distribution facilities in old urban neighborhoods and villages, strictly implement the requirements of "one meter per household" for electricity consumption by urban residents, new charging infrastructure in residential areas, and flood prevention and control, and orderly promote the transformation of dual power supply for primary loads in high-rise neighborhoods. Accelerate the consolidation and upgrading of rural power grids, improve the structure of rural power grids, strengthen the connection between county power grids and the main grid, steadily push forward the extension of large power grids, build renewable energy LANs according to local conditions, and continuously increase the construction of rural power grids in remote areas, poverty-eradication areas, and old revolutionary areas. Scientific reinforcement of weak links, systematic combing to form a list of distribution grids in counties with a single direction of power supply, and targeted power supply reliability enhancement and transformation. Regular monitoring and mapping of the main (distribution) transformer heavy full load, line heavy overload, voltage overrun and other problems, put forward targeted solutions to eliminate power supply jams. In conditional areas, combined with technical and economic comparisons, new technologies such as hybrid AC and DC distribution grids and flexible interconnections are being applied, and highly reliable wiring of distribution grids is being explored.
(ii) Improve the energy efficiency and intelligence of equipment. Accelerate the upgrading and transformation of old and high energy-consuming equipment and facilities, which must reach energy-efficiency and energy-saving levels after transformation, and strive to reach energy-efficiency advanced levels. 2025, power grid enterprises will completely eliminate S7 (including S8) type and distribution transformers with an operating life of more than 25 years and whose energy efficiency fails to reach the entry level, and the proportion of transformers with energy-efficiency and energy-saving levels and above in operation in the whole society will be increased by more than 10 percent compared with that in 2021. Continuously promote the standardization of equipment, comprehensively apply typical designs and standard materials, and actively promote highly reliable, integrated, low-energy, environmentally friendly, primary and secondary fusion equipment. It will further expand the application scope of network communication, big data, automatic control and other technologies, continuously improve the effective coverage of power distribution automation, and gradually enhance the load control capability. Reasonably configure facilities and equipment such as monitoring terminals, unmanned inspection terminals, power-carrying operation robots, etc., and accelerate the application of technologies such as intelligent monitoring and analysis of equipment status and intelligent perception of power grid disasters. Innovative application of digitization technology to strengthen the coordinated regulation and control of power distribution grid level source, network, load and storage. Tap into the value of electric power data, and promote the deep integration of grid digital technology with the real economy. Establish a sound data security management system and take corresponding technical measures to safeguard data security.
(c) Strengthening the construction of emergency protection capacity. Reasonably improve the construction standards of relevant lines and substations in core areas and important users, promote the construction of local emergency power supply, coordinate the deployment and use of mobile emergency power supply, and important users should be equipped with self-contained emergency power supply according to the requirements, so as to enhance the ability to guarantee the supply of electricity to key areas, key parts and important users under extreme conditions. Enhance the comprehensive disaster prevention capability of the power grid, strengthen the research on the changing law of rain, snow and ice weather, accelerate the revision and improvement of the regional distribution map of typhoons, freezing rain and ice cover, and gusty winds, differentiate and improve the local planning, design and disaster prevention and control standards, enhance the capability of preventing and responding to natural disasters, and push forward the migration of non-compliance with the requirements of the existing underground distribution facilities to the ground or the implementation of the flood prevention transformation, and prevent the forest and grassland fires and personal electrocutions. Accidents.
III. Enhancing carrying capacity to support transformational development
(i) Meeting the demand for large-scale distributed new energy sources to connect to the grid. In conjunction with the development goals of distributed new energy, targeted strengthening of distribution grid construction, supporting and improving the means of stable grid operation, and guaranteeing power quality. Integrate distribution grid capacity, load growth and regulation resources, systematically carry out analysis of the impact of new energy connection, assess the carrying capacity of distribution grids, establish a release and early warning mechanism for the scale of new energy that can be carried, and guide the scientific layout of distributed new energy sources, orderly development, nearby access and local consumption.
(ii) Satisfying the electricity demand of large-scale electric vehicles and other new types of loads. Carry out analysis of electric vehicle charging load density in different scenarios, establish an information dissemination mechanism on the capacity of electric vehicle charging facilities that can be accessed by distribution grids, and guide charging facilities to reasonably access the medium- and low-voltage distribution networks in a hierarchical manner. Strengthening two-way interaction and condition matching analysis, scientifically connecting charging facilities point layout and distribution grid construction and renovation works, and helping to build an electric vehicle charging infrastructure network with city face, highway line and countryside point layout. Combined with the load characteristic analysis, the distribution network upgrading and transformation will be arranged in an orderly manner to meet the electricity demand of electric heating, electric boiler, port shore power and other electric energy substitution facilities.
(c) Promoting the diversified development of new types of energy storage. Based on the analysis of power system regulation capacity, according to different application scenarios, scientific arrangement of new energy storage development scale. Guiding distributed new energy sources to reasonably allocate new types of energy storage according to their own operational needs or configure new types of energy storage through sharing modes, enhancing the reliable substitution capability of new energy sources, and promoting the consumption of new energy sources. Scientific layout of new energy storage in the key nodes of the power grid and the end of the power grid to improve the flexible adjustment capability and stable operation of the power grid. Supporting the safe development of user-side energy storage, strengthening metering management, realizing should be extracted as much as possible, around the distributed new energy, charging facilities, big data centers and other end-users, exploring the integration of energy storage application of new scenarios to support the participation in grid interaction. Promote the application of long-duration electric energy storage, hydrogen energy storage and thermal (cold) energy storage technology.
(d) Promoting the healthy development of new business models in the power system. Based on the access mode and consumption characteristics of distributed new energy, build distributed smart grids to meet the requirements of large-scale development and local consumption of distributed new energy, and realize compatibility and integration with the large power grid. Promote the construction of microgrids, clarify the physical boundaries, reasonably proportion the capacity of source, load and storage, and strengthen the independent peak adjustment and self-balancing capabilities. Tapping the potential of user-side regulation, encouraging the innovative development of virtual power plants, load aggregators, vehicle-network interactions and other new business models, and improving the system's response speed and regulation capability. Large power grids should create convenient conditions for distributed smart grids and microgrids to access the public power grid, simplify the grid connection procedures, and both sides should clarify the interfaces in terms of assets and management, as well as the rights and obligations in terms of scheduling and control, interactive operation, and regulating the use of resources.
IV. Strengthening the whole process of management to ensure the quality of development
(a) Coordinate the development of power grid planning. Local energy authorities should strengthen the management of distribution network planning, organize power grid enterprises to prepare plans and supervise their implementation. Distribution network planning to fully implement the coordinated regional development, new urbanization, rural revitalization and other national strategic mission requirements, and do a good job with the new energy, electric vehicles, energy storage and other industrial development planning linkage, and to strengthen and urban and rural master planning, territorial spatial planning convergence. Support unified planning and construction of municipal pipeline corridors for public infrastructure such as water, electricity and gas. Fully consider the stage and characteristics of local socio-economic development, and adhere to the differentiated planning of power distribution grids to improve efficiency and effectiveness.
(ii) Optimize project investment management. Grid enterprises should focus on the main business of the grid, and continue to increase investment in power distribution networks. Encourage diversified main body to invest in distribution network, innovative investment methods. Direct access to the distribution network of new energy field station, energy storage power station connection project investment in principle by the grid enterprise, the grid enterprise construction difficulties or planning and construction of the timing does not match the connection project, the main body can independently invest in the construction and agreed by the two sides, at the appropriate time by the grid enterprise in accordance with the rules and regulations of the repurchase. Solidly carry out quota management and cost calculation of distribution network projects, promote standardization and modularization of projects, reduce investment costs, optimize the investment structure and improve investment efficiency. Improve the efficiency of handling the approval or filing of distribution network, especially the 10 kV and below distribution network projects.
(c) Collaborating to promote project construction. The establishment of multi-departmental work coordination mechanism, compaction of responsibilities at all levels, strengthen grass-roots coordination efforts, and efficiently promote the project site selection and selection of lines, land use procedures for approval and other work, thematic solution of major projects, key areas supporting the construction and transformation of power grids, and promote the project as soon as possible to the ground. Combined with urban roads, bridges, comprehensive pipeline corridors and other municipal construction projects, the coordinated implementation of overhead line remediation, into the ground and other distribution network upgrading. Strengthen the construction team, construction process management, to carry out the whole process of supervision and management of engineering and construction, to ensure the safety of engineering and construction, and improve the quality of engineering and construction.
(d) Improving the scheduling and operation mechanism. Adhere to unified scheduling, hierarchical management, serious scheduling discipline, and ensure the safe operation of the power grid. Strengthen the intelligent construction of distribution network dispatching and the construction of information security protection system, comprehensively improve the observable and measurable, adjustable and controllable capacity, and gradually build a new active distribution network dispatching mode of main distribution and microgrid coordination. It will establish a coordinated regulation and control mechanism for source network, load and storage, continuously improve the new energy power regulation and control mechanism, optimize the protection and control strategy in areas with high penetration rate of distributed new energy, establish and improve the new energy storage regulation and control system and call mechanism, support various types of user-side regulation resources to participate in the market by means of virtual power plant, load aggregation, etc., so as to improve the regulation capability of the distribution grid, the capability of resource allocation and the capability of self-healing. It will improve real-time state sensing and fault handling capability, strengthen hierarchical control, and enhance the control capability of distributed power supply.
(v) Enhancing the level of operation and maintenance services. Strengthen equipment inspection and maintenance, and eliminate equipment defects and hidden dangers in a timely manner. Carry out lean operation and maintenance, optimize power outage planning, strengthen the fault rapid repair management, promote the distribution network fault active repair technology and "first restoration, repair" mode, reduce the time, frequency and impact of power outages. Power users should strengthen the operation and maintenance of their own facilities, eliminate hidden dangers in a timely manner, prevent accidents, and avoid the impact on the utility grid. Revise and improve the grid connection standards to strengthen the foundation for safe and stable operation of distribution networks. Simplify the process of grid connection, accelerate the construction and commissioning acceptance of grid connection projects, and improve service efficiency. Support the development of comprehensive energy services relying on the distribution grid.
V. Strengthening reform and innovation and solving development problems
(i) Continuously promoting scientific and technological innovation. Strengthen research on active distribution network planning methods, operation mechanisms and balancing methods, as well as scheduling and operation control methods for microgrids, virtual power plants and other new modes, improve relevant standards, and actively carry out international cooperation. Explore the optimal layout and efficient use of new energy storage, carry out research on efficient carrying technology for charging facilities, and promote flexible access for new subjects. It will support conditional regions to carry out early and pilot implementation of technology and model innovation in power distribution grids.
(ii) Improving market trading mechanisms. Clarify the market access, clearance and settlement standards for new subjects and new businesses such as distributed new energy sources, new types of energy storage, electric vehicle charging facilities, microgrids, virtual power plants, etc., and study and design appropriate trading varieties and trading rules, so as to encourage diversified resources to participate in market transactions on an equal footing. Improve the multi-timescale and multi-level power market to meet diversified demands. Innovate and expand new power system business models and trading mechanisms, and create conditions for direct trading between industrial and commercial power users and distributed power sources, new energy storage and other subjects.
(c) Continuously optimizing the electricity price mechanism. Further improve the time-sharing tariff mechanism, establish and improve the time-sharing tariff mechanism for residential charging piles for electric vehicles; in areas where the electricity spot market continues to operate, promote the dynamic adjustment of the division of peak and valley time periods according to spot price signals, and improve the characteristics of electricity consumption by users. Study and improve the price mechanism for energy storage. On the basis of evaluating the pilot market-based trading of distributed power generation, study and improve the transmission and distribution pricing mechanism to better promote the consumption of new energy sources in the vicinity.
(d) Improvement of fiscal and financial policies. Give full play to the role of the central investment guide and drive, and promote the consolidation and upgrading of rural power grids. Support the construction of eligible distribution network projects through local government special bonds. Establish and improve the investment and operation and maintenance cost channeling mechanism for universal service of electricity in remote areas, and encourage local governments to adopt policies such as financial subsidies, fiscal and tax exemptions, etc., to guide more resources to be allocated to the weak links and key areas. Financial institutions are encouraged to improve their financial service capacity and support the construction of distributed new energy sources, charging infrastructure and new types of energy storage.
VI. Strengthening organizational safeguards and promoting work in an integrated manner
(a) Establish a sound working mechanism. The establishment of local energy authorities at all levels and the price, housing, land and other relevant authorities, energy regulatory agencies, various types of power enterprises, new business project units, and important power users to work together in a cooperative working mechanism, tailored to the local conditions to formulate the implementation of the program, the full implementation of high-quality development of the distribution network of the requirements.
(ii) Compacting the work responsibilities of all parties. Local energy authorities should organize the preparation of distribution network planning, optimize the project approval process, strengthen the construction and transformation of the distribution network and operation management, improve investment efficiency, and control the cost of the grid; take the initiative to dock the relevant departments and grass-roots governments, coordinate the station site, corridor resources, and ensure the smooth implementation of the project. Electric power enterprises and the relevant new industry project unit is the implementation of the main body of the distribution network construction and operation, to take the initiative to enhance the awareness of service, continue to improve the quality of service, do a good job in project management, construction, operation and maintenance, connecting to the network services, etc., and the implementation of the main responsibility for safety. Dispatched agencies of the National Energy Administration will strengthen supervision in accordance with the division of responsibilities, identify problems in a timely manner and promote solutions.
(c) Continuous supervision and assessment. Local energy authorities, the National Energy Board dispatched institutions in accordance with their responsibilities to strengthen the tracking and analysis of the development of the distribution network and supervision and management, timely assessment of the effectiveness of the summary of the improvement. The National Development and Reform Commission and the National Energy Administration will organize assessment and summary in due course, and will publicize and promote typical practices and successful experiences that have achieved remarkable results in the transformation of distribution grids in urban villages, consolidation and upgrading of rural grids, and the operation of distributed new energy sources connecting to the grid, the interaction of electric vehicle charging infrastructures connecting to the grid and the synergistic operation and control of the source, network, load and storage, and other key tasks.
PRC National Development and Reform Commission
National Energy Administration
February 6, 2024
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