Source-storage-network coordination planning method considering energy storage comprehensive income

Abstract

The invention relates to a source-storage-network coordination planning method considering energy storage comprehensive income, which is characterized by comprising the following steps of: dividing into two branches according to annual load and wind power data of a planning target, one branch not including an energy storage system in terms of 0.18; the other branch is source-storage-network coordinated planning containing energy storage. The method comprises the steps of 1, formulating a dynamic time-of-use electricity price of each typical day scene based on wind power and load data; 2, giving an energy storage configuration initial value; 3, performing power supply planning under the new planning boundary to obtain power supply planning construction cost CYN; 4, carrying out subtraction on variables such as power supply planning cost, power grid planning cost, wind curtailment cost and network loss cost obtained by the two branches based on a difference value method; and revising energy storage configuration, returning to the second step, and repeating the above steps to finally obtain an optimal scheme of source-storage-network coordination planning considering energy storage comprehensive benefits.

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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