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Microgrid group containing shared energy storage system and day-ahead economic optimization scheduling method thereof

A technology of energy storage system and micro-grid group, which is applied in the direction of information technology support system, photovoltaic power generation, electrical components, etc., and can solve problems such as less consideration of power trading

Pending Publication Date: 2020-11-03
SOUTHEAST UNIV
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  • Application Information

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Problems solved by technology

However, the existing research work mainly focuses on the control and pricing of energy exchange between energy storage systems and energy users, and less consideration is given to the energy transactions between users through publicly connected energy storage systems.

Method used

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  • Microgrid group containing shared energy storage system and day-ahead economic optimization scheduling method thereof
  • Microgrid group containing shared energy storage system and day-ahead economic optimization scheduling method thereof
  • Microgrid group containing shared energy storage system and day-ahead economic optimization scheduling method thereof

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Embodiment Construction

[0102] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0103] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

[0104] The overall structure of the microgrid group system with shared energy storage studied in the present invention is as follows: figure 1 shown. The micro-grid adopts a busbar structure, and each micro-grid has its own electrical load, and includes new energy generation equipment such as photovoltaics and wind turbines. At the same time, each microgrid can realize power interaction with the active distribution network and the shared energy storage system through the tie line. There is a two-way power flow b...

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Abstract

The invention discloses a microgrid group containing a shared energy storage system and a day-ahead economic optimization scheduling method thereof. The method comprises the following steps: step 1, establishing an operation model of each part in the microgrid group containing the shared energy storage system; step 2, on the basis of the step 1, introducing system operation constraints by taking the lowest operation cost of the microgrid group system as a target, and establishing a day-ahead economic optimization scheduling model of the microgrid group; and step 3, obtaining an operation costcoefficient and an operation limit value of each device in the microgrid group, solving the day-ahead economic optimization scheduling model based on the step 1 and the step 2, and determining a day-ahead scheduling scheme of the microgrid group system. According to the method, a microgrid group system containing a shared energy storage system is considered, and each microgrid can realize bidirectional energy flow with the shared energy storage system through a tie line, so that energy storage and energy interaction among different microgrids are performed, consumption of renewable energy sources is effectively realized, peak clipping and valley filling effects are achieved, the energy utilization efficiency is improved, and the method is suitable for large-scale popularization and application. Power utilization cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of energy system operation optimization, and specifically relates to a microgrid group including a shared energy storage system and a day-ahead economic optimization scheduling method thereof. Background technique [0002] In response to growing climate change, some countries have set their own carbon reduction targets. Renewable energy is considered to be an important way to reduce carbon emissions. Correspondingly, the penetration rate of renewable energy has also increased significantly in the past decade. The high penetration of renewable energy sources will pose challenges for network operators due to their fluctuating nature. Therefore, in order to alleviate the fluctuation of renewable energy output and meet the power balance, energy storage systems are widely used at present. Although the price of batteries keeps falling, the price and service life of batteries still cannot be ignored. Therefore, ...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q30/02G06Q50/06H02J3/00H02S10/12
CPCG06Q10/04G06Q30/0283G06Q50/06H02J3/00H02S10/12H02J2203/20Y02E10/50Y04S50/14
Inventor 张汉林周苏洋顾伟
Owner SOUTHEAST UNIV
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