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Position selection and capacity-fixing two-stage optimization method for centralized energy storage power station

An energy storage power station and optimization method technology, applied in the direction of electric energy storage systems, electrical components, energy reserves, etc., can solve the problems of lack of planning and design methods for centralized energy storage power stations, so as to avoid redundancy or shortage and improve consumption Ratio, the effect of reducing the operating cost of the power grid

Pending Publication Date: 2021-12-10
XI AN JIAOTONG UNIV
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Problems solved by technology

[0003] In the absence of planning and design methods for centralized energy storage power stations, the present invention proposes a centralized energy storage power station site selection Constant volume two-stage optimization method

Method used

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  • Position selection and capacity-fixing two-stage optimization method for centralized energy storage power station
  • Position selection and capacity-fixing two-stage optimization method for centralized energy storage power station
  • Position selection and capacity-fixing two-stage optimization method for centralized energy storage power station

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Embodiment Construction

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0051] A two-stage optimization method for site selection and capacity determination of centralized energy storage power stations proposed by the present invention takes the data of a domestic power grid as an example for optimization, figure 1 The implementation steps of the optimization method are shown, as follows:

[0052] Step 1: According to the net load of the entire regional power grid, the power limit and charging and discharging status of the energy storage station itself, and the timing characteristics of renewable energy, establish an operation strategy for the centralized energy storage station. The specific model is as follows:

[0053] First define the net load of the grid nodes individually, and then add the net loads of all nodes in the grid to obtain the net load of the grid:

[0054]

[0055]

[0056] In the ...

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Abstract

The invention discloses a position selection and capacity-fixing two-stage optimization method for a centralized energy storage power station. The method comprises the following steps of: establishing a centralized energy storage power station operation strategy according to a balance relation between hourly generating capacity and load, the power limitation and charge-discharge state of the energy storage power station, and renewable energy source time sequence characteristics; comprehensively considering storage position preselection from four aspects, namely betweenness centrality, load size, renewable energy power generation installed capacity and adjacent node average distance; carrying out multi-objective optimization on the position and the capacity of the energy storage power station through NSGA-II by taking peak regulation profit, investment cost and active power loss as objectives; and finally, carrying out optimal power flow calculation with the lowest power grid operation cost to obtain the optimized charging and discharging power of the energy storage power station. According to the method, quantitative optimization can be realized for specific application scenes, the situations of redundancy or insufficiency and the like of installed capacity distribution of the energy storage power station are avoided, the consumption proportion of renewable energy sources is effectively improved, the operation cost of a power grid is reduced, and technical guidance is provided for guiding construction of the centralized energy storage power station.

Description

technical field [0001] The invention belongs to the field of planning and design of energy storage power stations, and in particular relates to a two-stage optimization method for site selection and capacity determination of centralized energy storage power stations. Background technique [0002] Energy and climate issues have long been the focus of domestic and international attention. According to the data released by the International Bureau of Statistics, my country's coal consumption in 2020 will account for 56.8% of the total energy consumption, which is 0.9 percentage points lower than that of the previous year. The coal-based energy structure has not yet fundamentally changed. At the same time, the volatility, intermittency, and randomness of renewable energy lead to abandonment of wind and light, which restricts its own development. Energy storage can alleviate the uncertainty and variability of renewable energy such as wind energy and solar energy in the power syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/28H02J3/06H02J3/00H02J15/00G06Q10/04G06Q10/06G06Q50/06
CPCH02J3/28H02J3/008H02J3/06H02J15/00G06Q10/04G06Q50/06G06Q10/06313G06Q10/06312H02J2203/10H02J2203/20Y02E70/30
Inventor 王进仕章硕严俊杰种道彤刘继平刘明陈伟雄韩小渠赵全斌邢秦安
Owner XI AN JIAOTONG UNIV
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