Energy optimization method considering battery attenuation cost in microgrid

An energy optimization, battery technology, applied in the field of energy management, can solve problems such as energy optimization

Pending Publication Date: 2020-07-10
HANGZHOU FUSHENG ELECTRICAL APPLIANCE +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method only considers the fluctuation of power load, but does not consider the problem that frequent charging and di

Method used

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  • Energy optimization method considering battery attenuation cost in microgrid
  • Energy optimization method considering battery attenuation cost in microgrid
  • Energy optimization method considering battery attenuation cost in microgrid

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Embodiment

[0060] Embodiment: In this embodiment, an energy optimization method considering battery attenuation cost in a microgrid, such as figure 1 shown, including the following steps:

[0061] Step 1. Build a battery decay cost model: C batt (t), that is, the attenuation expenditure of the battery at time t.

[0062] Step 2: Build a cost model for electricity expenses: T elec (t)*p grid (t), where T elec (t) represents the electricity price at time t, p grid (t) indicates the amount of power exchange with the main grid at time t. If it is a positive number, it means that the user purchases electricity from the main grid, and if it is negative, it means that the user sells it to the main grid.

[0063] Step 3. Establishing the objective function for microgrid system operation optimization: Combining steps 1 and 2, an optimization objective function that minimizes a day’s electricity expenses and battery attenuation costs in the microgrid can be established. The optimization objec...

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Abstract

The invention discloses an energy optimization method considering battery attenuation cost in a microgrid. The method comprises the following steps: 1, constructing a battery attenuation cost model; 2, constructing an electric charge expenditure cost model; 3, establishing a target function of microgrid system operation optimization; 4, establishing a constraint condition for inducing and optimizing the target function; 5, global optimization solution of the model; and 6, instance operation. The invention aims at overcoming the defects of energy optimization in a micro-grid. By considering theattenuation cost of the battery, a perfect mathematical model is established as required, a complex model is decomposed into relatively simple models in the solving process, the simple models are solved, finally, an energy optimization scheme with the minimum economic expenditure is obtained through analysis, and the energy efficiency and safety in the microgrid are improved.

Description

technical field [0001] The invention relates to the technical field of energy management, in particular to an energy optimization method in a microgrid considering battery attenuation costs. Background technique [0002] The continuous increase in energy demand and greenhouse gas emissions has become a major concern of the world, and one of the promising solutions to these problems is the smart grid as the future power system. Smart grids can improve energy efficiency in various ways, such as pricing policies and demand response (DR) control methods. Demand response facilitated by smart grids can improve energy efficiency and security by coordinating the balance between energy supply and energy demand. Due to the randomness of the electric load, the difference between the predicted value and the actual value is unavoidable. Energy storage batteries act as bi-directional regulators, together with the grid to improve energy efficiency, and are usually integrated into DR to c...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F111/04G06F111/10G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 黄言态汪卫刚蒋利锋许敏吕辉
Owner HANGZHOU FUSHENG ELECTRICAL APPLIANCE
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