At present, Hainan's 500-kilovolt main grid project has entered an important stage of full launch and acceleration. This project will promote the safe transmission and consumption of large-scale offshore wind power and serve the green transformation and development of Hainan Free Trade Port. The picture shows a group of wind turbines located on the beach. 　　Photo by Zheng Zhe (People’s Vision)
　　In recent years, Qinnan District, Qinzhou City, Guangxi has vigorously promoted the "photovoltaic power generation + underwater breeding" model and developed new energy industries, which has not only improved land utilization but also strengthened the village collective economy. The picture shows young volunteers from the Guangxi Qinzhou Power Supply Bureau of China Southern Power Grid conducting daily inspections of the local fishery-photovoltaic power station to ensure the safe and stable operation of the equipment. 　　Photo by Zhai Shengzhen (People’s Vision)
　　The National Development and Reform Commission and the National Energy Administration recently jointly issued the "Guiding Opinions on Strengthening the Construction of Peak-shaving Energy Storage and Intelligent Dispatch Capabilities of the Power Grid" (hereinafter referred to as the "Opinions"), proposing that by 2027, the power system regulation capacity will be significantly improved With the improvement, the operational scale of pumped storage power stations will reach more than 80 million kilowatts, and the demand-side response capacity will reach more than 5% of the maximum load. Industry insiders said that this will effectively promote the clean and low-carbon transformation of energy and provide support for the safe and stable supply of energy and power.
　　 Strengthen peak peaking capacity building
　　The construction of power grid peak shaving, energy storage and intelligent dispatching capabilities is the main measure to improve the power system's regulation capabilities. It is the key support to promote the large-scale and high-proportion development of new energy and is an important part of building a new power system.
　　The "Opinions" proposed to strengthen the peaking capacity building. Efforts will be made to improve the peak shaving capability of supporting power supply. We will carry out in-depth flexibility transformation of coal power units, and by 2027, all existing coal power units will be “renovated as needed.” In areas with a high proportion of new energy and insufficient peak shaving capacity, deep peak shaving of coal power units should be explored while ensuring safety, with the minimum power generation output reaching less than 30% of the rated load. At the same time, we will coordinate efforts to improve renewable energy peaking capabilities. Actively promote the construction of leading reservoir power stations in the basin, promote the expansion of hydropower capacity and the utilization of power generation potential, carry out coordinated and optimized dispatching of cascade hydropower stations, and improve hydropower peak-shaving capabilities. Give full play to the peak-shaving effect of photothermal power generation.
　　In addition, vigorously improve the ability of the power grid to optimize the allocation of renewable energy. Give full play to the role of large power grids in optimizing resource allocation platforms, strengthen the coordination of renewable energy bases, regulatory resources and transmission channels, strengthen the construction of transmission and receiving end grids, and support the bundled delivery of wind, solar, water, thermal storage and other energy sources. Comprehensively promote the normalization of demand-side resources to participate in peak regulation of the power system.
　　 Zhang Lin, director of the Planning and Development Department of the China Electricity Council, believes that the "Opinions" focus on the construction of peak regulation resources on the power side, grid side, and demand side, and comprehensively consider the balance between various types of regulation capabilities, which is crucial to the comprehensive development and improvement of the power system. Adjustment capabilities, safe and stable supply of power systems play an important role.
　　Vigorously accelerate the construction of energy storage
　　With the rapid development of renewable energy, the installed scale of wind power, photovoltaic and other renewable energy sources across the country continues to expand, and the amount of renewable energy power generation also increases. However, renewable energy power generation has the characteristic of “depending on the weather”, which puts forward higher requirements for energy storage construction.　　"Pumped hydro storage and new energy storage have become an important part of improving the system's regulation capacity. The "Opinions" highlight the coordinated development of energy storage in all aspects of generation, transmission, and distribution, and require coordinated planning of pumped hydro storage and other regulating resources, and reasonable layout, scientific and orderly development and construction of pumped storage power stations; on the power supply side, new energy enterprises are encouraged to reasonably determine Determine the scale of energy storage allocation to improve the level of new energy consumption and utilization; on the grid side, encourage the optimal layout of energy storage based on system operation needs to improve energy storage operation efficiency; on the user side, rely on the source, grid, load and storage integration model to rationally allocate user-side energy storage , Promote electric vehicles to participate in power system regulation in various forms, and give full play to the flexible adjustment capabilities of the user side," Zhang Lin said.
　　Strengthening energy storage construction is inseparable from the support of innovative new technologies. The "Opinions" propose to promote the diversified and coordinated development of new energy storage technologies. Give full play to the technical and economic advantages of various new energy storage types, and select appropriate technical routes based on the needs of different application scenarios of the power system. Focusing on the requirements of high safety, large capacity, low cost, long life, etc., carry out integrated innovation and research on key core technology equipment, focus on conquering long-term energy storage technology, and solve the system adjustment on a time scale of more than a day caused by large-scale integration of new energy sources into the grid. need.
　　Experts said that these measures will effectively drive the industry towards high-quality development, stimulate relevant R&D investment, and thus provide guarantee for improving the stability of the power system.
　　Improve intelligent dispatching capabilities
　　To ensure the safe and stable supply of power, we must further improve the power grid dispatching capabilities, especially the level of intelligent dispatching.
　　The "Opinions" propose to promote the construction of a new power dispatch support system. Promote the widespread application of advanced digital information technologies such as "Cloud, Big Things, Intelligent Chain Edge" and 5G in all aspects of the power system, enhance the real-time collection, perception and processing capabilities of meteorology, weather, water regimes and status data on all sides of the source, grid, load and storage, and achieve massive The resources are observable, measurable, adjustable and controllable, improving the collaborative interaction capabilities of power supply, energy storage, load and power grid. At the same time, we should make full use of my country's vast territory, differences in load characteristics and new energy resources in various regions, and large complementary potential, tap the mutual benefit potential of cross-provincial and cross-regional sending and receiving end regulating resources, and achieve a wider range of power supply and demand balance and new Energy consumption.
　　 "The new digital and intelligent power system can achieve more efficient coordination of source, grid, load and storage, promote multi-energy complementation and multiple interactions, and is an effective control method to improve system regulation capabilities." Zhang Lin said, the "Opinions" require Explore the coordinated dispatching mechanism of multiple energy varieties and source, grid, load and storage, improve the overall regulation performance of large-scale renewable energy bases, optimize the collaborative optimization of various entities of source, grid, load and storage, and reduce the regulatory pressure of large power grids. This will promote the improvement of power grid stability and security, thereby providing effective guarantee for economic and social energy use.
　　Relevant person in charge of the National Development and Reform Commission stated that the National Development and Reform Commission and the National Energy Administration will improve the peak shaving capacity assessment system of the power system, coordinate and promote the construction of peak shaving, energy storage and intelligent dispatching capabilities of the national power grid, and organize relevant agencies to conduct The implementation plans of various localities and power grid enterprises are evaluated, and relevant policies and standard systems are continuously improved.At the same time, energy and power companies must fulfill their main responsibilities and do a good job in the construction and operation of peak shaving and energy storage projects according to the implementation plan. Power grid companies must do a good job in intelligent dispatching of peak shaving and energy storage resources.
　　Original link: By 2027, the operational scale of pumped storage power stations will exceed 80 million kilowatts—promoting a significant improvement in the power system’s regulation capabilities.