A Source-Storage-Grid Coordinated Planning Method Considering the Comprehensive Benefits of Energy Storage

Abstract

The present invention is a source-storage-network coordinated planning method considering the comprehensive income of energy storage. Energy storage system not included. Another branch is source-storage-grid coordinated planning with energy storage. The first step is to formulate the dynamic time-of-use electricity price for each typical daily scenario based on wind power and load data; the second step is to give the initial value of energy storage configuration; the second step Three-step power supply planning under the new planning boundary to obtain the power supply planning construction cost C YN In the fourth step, based on the difference method, the variables such as power supply planning cost, power grid planning cost, wind curtailment cost, and network loss cost obtained by the two branches are made difference; after completing the energy storage configuration, go back to the second step, repeat the above steps, and finally get The optimal scheme of source-storage-network coordination planning considering the comprehensive benefits of energy storage is proposed.

Description

technical field [0001] The invention relates to the field of source-storage-network coordinated planning in high-proportion renewable energy grid-connected, and is a source-storage-network coordinated planning method based on consideration of energy storage comprehensive benefits. Background technique [0002] Energy storage has many technical characteristics such as energy throughput, controllability, and flexible installation. Its large-scale application can better solve the problem of system flexibility imbalance after a high proportion of renewable energy is connected. The key technology of the energy power system is the "necessity" of the future high proportion renewable energy power system. [0003] At present, most of the planning and research work involving energy storage configuration, in the planning model, the role of energy storage is single, and the optimal configuration of energy storage is carried out with the goal of achieving a certain technical index or the...

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Problems solved by technology

If the energy storage system is configured only to handle these peak powers, the energy storage will be idle most of the time, and its performance will not be able to be exerted, which will further aggravate the problem of high energy storage costs, resulting in difficulty or less configuration of energy storage during planning , the planning scheme will be more economical

[0004] Energy storage plays a significant role in delaying the investment in transmission lines, promoting the consumption of renewable energy, improving the reliability of power grid operation, and reducing the installed capacity of power sources. However, the benefits of these aspects are difficult to identify and quantitatively account for.

In addition, my country's grid-side energy storage projects are currently in their infancy, most of which are demonstration projects, and the auxiliary services and operation modes of energy storage participation are not yet perfect and clear

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