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-- Policy Interpretation of the Notice of the National Energy Administration on Promoting the Grid Connection and Dispatching of New Energy Storage

2024-04-23

The report of the 20th National Congress of the Communist Party of China, Rao Hong, an academician of the Chinese Academy of Engineering, proposed to "accelerate the planning and construction of a new energy system, strengthen the construction of an energy production, supply, storage and marketing system, and ensure energy security". Energy storage is of great significance to promote energy green transformation, respond to extreme events, ensure energy security, promote high-quality energy development, and support the realization of climate change goals. In 2024, "developing new energy storage" was first written into the government work report as an important measure to actively and steadily promote carbon neutralization. As a key support force to ensure the energy demand of China's economic and social development, the new energy storage will speed up the construction of a new energy system and development.

Rao Hong, Academician of Chinese Academy of Engineering

The report of the 20th National Congress of the Communist Party of China proposed to "speed up the planning and construction of a new energy system, strengthen the construction of energy production, supply, storage and marketing system, and ensure energy security". Energy storage is of great significance to promote energy green transformation, respond to extreme events, ensure energy security, promote high-quality energy development, and support the realization of climate change goals. In 2024, "developing new energy storage" was first written into the government work report as an important measure to actively and steadily promote carbon neutralization. As the key supporting force to ensure the energy demand of China's economic and social development, the new energy storage will provide stronger new kinetic energy for accelerating the construction of a new energy system and developing new quality productivity.

Recently, the National Energy Administration issued aNotice of the National Energy Administration on Promoting the Grid Connection and Dispatching of New Energy Storage (hereinafter referred to as the Notice)It reflects the policy direction of the new energy storage scheduling operation at the national level. The notice defines the functional orientation, grid connection and dispatching operation management and technical requirements of the new energy storage, provides policy guidance and institutional guarantee for effectively ensuring the rational and efficient use of the new energy storage and giving full play to the function and benefit of the new energy storage as a flexible resource, and provides important guidance for the formulation and improvement of the new energy storage dispatching operation procedures and operation modes in various regions, which is helpful to improve New The overall utilization level of energy storage, alleviate the problem of "building but not using" some energy storage projects, and further enhance the attractiveness of the market. The official issuance of the Notice is timely.

The Notice combines the application scenarios of new energy storage to clarify the functional positioning of new energy storage at the national level.

Demand-driven is the endogenous driving force for the large-scale development of the new energy storage industry. The new energy storage has the advantages of flexible layout, short construction period and fast response speed. At present, it has the flexible adjustment ability to provide power grid with millisecond to hour power support within days. However, due to the low utilization rate of the current new energy storage, its adjustment effect is not fully reflected. The Notice further clarifies the application scenarios and functional positioning of the new energy storage in peak shaving, frequency modulation, voltage regulation, standby, black start, inertia support and other links, which will effectively promote the new energy storage to play a greater role in the development and consumption of new energy and the safe and stable operation of the power system, and support the overall improvement of the power system's ability to ensure power supply, safety and promote consumption.

From the point of view of ensuring safe operation, the notice clarifies the scope of the new energy storage at the system level.

Clarifying the scope of regulation is a prerequisite for the stable and healthy development of the new energy storage industry. For a long time, the new energy storage power station has diversified dispatching modes and unclear regulation scope. Taking independent energy storage as an example, its "self-dispatching" mode is more suitable in the early stage of energy storage development, and with the continuous expansion of the new energy storage grid-connected scale, its dual attributes of "power generation" and "load" will have a non-negligible impact on the operation control and planning of the power system. Taking independent energy storage as an example, the centralized fast charging of large-scale independent energy storage in the low electricity price period and the centralized fast discharge in the high electricity price period will cause the regional grid-connected bus voltage to fluctuate greatly and the grid adjustment is difficult. The Notice further clarifies the scope of the new energy storage to be dispatched by the power system, divides the new energy storage connected to the power system and signed the dispatching agreement into two categories: the new energy storage for dispatching and the new energy storage for power station's own use, and proposes to include independent energy storage power stations, new energy distribution and construction energy storage, thermal power combined frequency modulation energy storage, and user-side energy storage with dispatching instructions into the scope of accepting power grid dispatching. The Notice also makes it clear that in the event of an accident that endangers the safety of the power system, all new energy storage within the scope of the regulation shall be directly called by the power dispatching agency, and the independent energy storage charge and discharge price mechanism shall be followed during the direct call. The above requirements will effectively improve the safe scheduling operation level of the new energy storage.

"Notice" combined with policy guarantee and market-oriented operation needs, clear the new energy storage scheduling operation management mode

Policy support is a necessary condition for the rapid development of the new energy storage industry, and market promotion is the only way for the healthy development of the new energy storage industry. As the current new energy storage economy is not enough to support its full market-oriented development, the necessary policy support plays an important role in promoting the initial development of the energy storage industry. The Notice proposes to give priority to the call of new energy storage pilot demonstration projects, and emphasizes the promotion of new energy storage calls in a market-oriented manner: for new energy storage participating in the power market, new energy storage operations should be arranged in accordance with the results of market clearance, and new energy storage that does not have the conditions to participate in the power market should be called through scheduling instructions. The introduction of the Notice is expected to improve the new energy storage participation in the electric energy market, auxiliary services market and other market mechanisms, and constantly enrich the trading varieties, broaden the new energy storage to obtain multiple market benefits channels, for the new energy storage to fully participate in the power market to provide a good environment, promote the healthy and orderly development of new energy storage.

The Notice emphasizes the new energy storage grid-connected scheduling technology and management requirements, and encourages the optimization and upgrading of technology and the improvement of standard systems.

Technology upgrading and standard system improvement are the inevitable requirements for the high-quality development of the new energy storage industry. At present, there is still a lack of energy storage battery management system, energy storage converter and other key equipment, safety protection and fire extinguishing system and other fault detection and judgment methods, and has not yet established a mature and complete power station construction, acceptance, operation and maintenance system and safety management mechanism similar to regular power supply. The Notice standardizes the technical requirements for grid-connected access of new energy storage, dispatching and operation technical requirements and supervision and management requirements, which will effectively promote the future operation and maintenance level of new energy storage and the improvement of network-related performance, and promote the planning, filing, construction, access, operation and call management of new energy storage projects to be more standardized. In addition, the "Notice" also clearly put forward to encourage the stock of new energy storage technology transformation to have the ability to accept scheduling instructions, promote the new energy storage intelligent control technology research and development innovation, and focus on promoting the application of new technologies. The introduction of the Notice will bring broad development space for the key technologies of new energy storage grid-connected and dispatching operation, and in the future, various new technology applications such as optical storage and charging integration, energy storage cluster scheduling, distributed virtual power plant aggregation and interactive regulation will be hatched to provide greater support for promoting the construction of new power systems.

Key words:

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