Institutional report: Digging flexibility resources is the key to building a new type of power system

21st Century Business Herald reporter Peng Qiang Beijing report

On July 19, the Natural Resources Protection Association (NRDC) cooperated with North China Electric Power University to hold a seminar. At the meeting, a report called "Flexibility of the Power System: Technical Path, Economic and Policy Proposal" (hereinafter referred to as the "Report "), Discussed the issues of new power system construction, the flexibility of the power system, and the guarantee of safe and stable operation, and gave policy suggestions.

With the proposal of dual carbon targets, new energy sources such as domestic wind power and solar power generation will usher in a large -scale development. High -proportion new energy sources will become the development trend and important characteristics of the future power system. This will also bring the development of the power system. New challenges.

In the traditional power system dominated by coal power, the proportion of new energy is low and the load characteristics are relatively stable. The uncertainty and volatility at both ends of demand and supply are low. The supply and demand balance and safe and stable operation of the power system.

However, with the large -scale grid of centralized and distributed new energy sources, the ends of the source and the lotus are highly uncertain, and the power supply safety and stable operating mechanism of the power system also tend to be complicated. There is a huge change.

The "Report" pointed out that due to the shortage of flexible resources, the flexibility of the domestic power system is obviously insufficient, leading to the problem of new energy consumption in a long period of time; if you do not pay attention to and improve in time, the flexibility of the future power system in the future is difficult to increase the dilemma of the flexibility system in the future power system. It will further intensify, and the safety and economy of power supply will be affected.

The research team of North China University of Electric Power and NRDC pointed out that the flexible analysis of the power system should consider directional and time characteristics, and adjust from both ends of supply and demand. In terms of the selection of the flexibility resources of the power system, we must pay attention to the technical characteristics and economy. The advantages of demand response and the flexibility of coal power flexibility are obvious. The pumping storage and short -term energy storage are preferred in regulating performance.

The "Report" proposes the flexibility improvement of the domestic power system, that is, during the "Fourteenth Five -Year Plan" period, the flexibility improvement of the power system depends on the flexibility of coal power and the construction of new pumping storage. And application.

During the "Fifteenth Five -Year Plan" period, with the further improvement of scenery penetration, the improvement of system flexibility relies on gas electrical, pumping storage energy, the flexibility of coal and electricity flexibility, and demand response. Auxiliary resources participate in flexibility regulation.

By the period of the "16th Five -Year Plan" period, the flexibility demand of the power system will be more diverse. Electric chemical energy storage, pumping energy storage, gas power, coal power, and demand -side resources will jointly become the main force to ensure the flexibility of the power system. Among them, flexibility improvement will be improved. The main body of contributions will be energy storage and demand -side resources.

Yuan Jiahai, a professor at North China University of Electric Power, said that the primary focus of the "Fourteenth Five -Year Plan" is to implement the national coal and electricity flexibility transformation goal, ensure that the established pumping storage target is achieved, and lay the foundation for achieving the long -term planning goals of 2035.

Yuan Jiahai predicts that the peak of the domestic power grid construction will be around 2035. Since then, more new energy will be based on local development and local consumption. By 2050, the power system will basically achieve decarburization, which is 2060 carbon neutralization targets in 2060. The realization of the realization of the realization; at that time, the form of the power system will be more manifested as the coupling of multi -energy industries such as transportation, heating, natural gas, and hydrogen.

Zhou Fuqiu, a researcher at the Energy Research Institute of the National Development and Reform Commission, said that the proportion of new energy power installations in the power system is a major basic change in the power structure. In order to adapt to this change, all aspects of the new power system need to be reshaped and restructured. , Reset, collaborate providing an indispensable comprehensive regulatory capacity to maintain system safety, stability, efficient and green high -quality operation.

Zhou Fuqiu emphasized that the comprehensive adjustment of the new power system to regulate the construction of the power system must not only coordinate the planning, moderate advancement, but also adapt to local conditions and optimize the development of various systems to regulate resources.

Recently, high temperatures have been continuously high -temperature, and the stability and safe operation of power supply and power grid system have attracted widespread attention. With the continuity of economic development, the peak and valley of the urban grid gradually expands. If the power needs of the peak momentum can be met by the expansion of the power plant, it will generate huge waste at the electricity period. In many places, it is also conducting the demand -side response pilot.

According to Zhao Xiaodong, a senior engineer of the Institute of Energy Research and Reform Commission, in 2013, Shanghai became the first pilot cities in China to respond to the demand for power demand; since then, Shandong, Tianjin, Chongqing, Guangdong, Shaanxi, Henan and other places have successively developed power demand side responses. According to the different characteristics and characteristics of the grids of various regional grids, the diversified local demand -side response mode is developed.

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