Two ministries: orderly construction of pumped storage and active promotion of new energy storage construction

On September 21, the National Development and Reform Commission and the National Energy Administration issued the "Guiding Opinions on Strengthening the Stability of the Power System under the New Situation", which mentioned:

Strengthening the foundation for power system stability

Improve the reasonable power supply structure. Promote the construction of system-friendly power stations, orderly promote the coordinated development of energy storage and renewable energy , and gradually realize the reliable replacement of traditional energy with new energy; coordinate the development and construction of large-scale new energy bases, regulation support resources and transmission channels, and promote the configuration of energy storage in bases according to relevant standards to ensure the continuity, stability and efficiency of transmitted electricity.

Scientifically arrange energy storage construction. Scientifically plan and configure energy storage on demand. According to the needs of the power system, coordinate the construction of various types of regulation resources, promote the scientific configuration of various types of energy storage according to local conditions, form power regulation and stability control capabilities for multiple time scales and multiple application scenarios, improve the output characteristics of new energy, optimize the load curve, and support the transmission of a high proportion of new energy. Orderly construction of pumped storage. Orderly promote the construction of pumped storage power stations that meet the conditions, explore the application of conventional hydropower to pumped storage and hybrid pumped storage power station technology, and new pumped storage units should have phase adjustment functions. Actively promote the construction of new energy storage. Give full play to the advantages of various new types of energy storage such as electrochemical energy storage, compressed air energy storage, flywheel energy storage, hydrogen energy storage, and heat (cold) energy storage, and build a diversified and integrated development model of energy storage in combination with application scenarios to improve the level of safety assurance and overall efficiency.

Strengthen the whole process stability management of power system

Strengthen dispatching and operation management. Strictly enforce dispatching discipline. Adhere to unified dispatching and hierarchical management. All grid-connected entities must obey the unified command of the dispatching agency. The dispatching agency must carry out stability management work in strict accordance with relevant laws, regulations and system standards; coordinate the operation mode of the power system and jointly implement the safety and stability control measures of the interconnected power system; in the event of serious failures, the dispatching agency should decisively take control measures in accordance with relevant regulations. Strengthen coordinated control. Establish a comprehensive management system for primary and secondary energy, strengthen the unified balance and coordination of power grids; improve the level of new energy forecasting, strictly carry out network-related performance management of various power sources and energy storage facilities, and improve the dispatching and control capabilities for high-proportion renewable energy access through the coordinated dispatch of the power grids of the source, grid, load, storage and cross-provincial transmission channels .

Build a stable technical support system

Research the basic theory of stability of new power systems. Study the stability mechanism and operating characteristics of high proportions of renewable energy, high proportions of power electronic equipment connected to the power system, and ultra-high voltage AC/DC hybrid operation, and master the transient transition process and suppression methods of power system faults. Innovate the theory and methods of multi-dimensional stability control of power systems, break through the theory of wide-area coordinated control of massive heterogeneous resources, and conduct in-depth research on the supporting role and control methods of new energy storage for the safety and stability of power systems . Accelerate the research on the theory of power and electricity balance under highly uncertain environments of sources and loads, and establish and improve various flexible and adjustable resource planning and design theories.

Improve the ability to analyze system characteristics. Promote the construction of multi-time scale analysis and simulation capabilities of power systems. Carry out in-depth analysis in all aspects of the power system, conduct electromagnetic transient simulation or electromechanical-electromagnetic hybrid simulation verification for a high proportion of power electronic equipment connected to the power grid, establish and improve detailed analysis models such as centralized new energy, new energy storage , and direct current, carry out comprehensive load modeling including distributed power sources, and promote the open sharing of new energy generator model and parameters. Strengthen the analysis of the stability characteristics of the power system. Consider the variability and randomness of operating conditions, strengthen the application of online safety analysis, make full use of actual faults and systematic experiments to carry out research, and master the system safety characteristics and stability boundaries.

Accelerate the development of major electrical equipment. Research and develop large-capacity circuit breakers, high-power and high-performance power electronic devices, new energy active support, large-capacity flexible direct current transmission and other electrical equipment that improve the stability of the power system. Promote the development of new energy storage technology in the direction of high safety, high efficiency and active support. Improve the level of independent control of power industrial control chips, basic software, key materials and components, and strengthen the competitiveness and risk resistance of the power industry chain.

Strengthen the construction of the stability technology standard system. Give full play to the guiding role of existing standards. Establish and improve the stability technology standard system with the "Guidelines for Power System Safety and Stability", "Technical Guidelines for Power System" and "Grid Operation Guidelines" as the core, and revise and improve them in a timely manner, and strengthen the role of standards in leading technological development and standardizing technical requirements. Continue to improve the stability technology standard system. Improve the technical standards for new energy grid connection, enhance the frequency, voltage tolerance and support and regulation capabilities of new energy; establish technical standards for grid-connected entities such as new energy storage, virtual power plants, and distributed smart grids, and operation and dispatch; improve the new power system supply and demand balance, safety and stability analysis and control protection standard system, and guide the top-level design of the new power system wide-area collaborative control system; carry out the development of power safety standards such as black start and system recovery, network security, etc.; lead the formulation and revision of international standards related to power system stability under the new situation.