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Microgrid multi-time scale energy management method based on demand side response

A multi-time-scale, demand-side response technology, applied in photovoltaic power generation, wind power generation, electrical components, etc., can solve problems that cannot meet the requirements of micro-grid economic dispatch

Active Publication Date: 2019-10-08
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the uncertainty and volatility of renewable resources and demand-side resources, only using the day-ahead dispatch plan can no longer meet the requirements of microgrid economic dispatch

Method used

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  • Microgrid multi-time scale energy management method based on demand side response
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  • Microgrid multi-time scale energy management method based on demand side response

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Embodiment Construction

[0095] In order to detail the technical content, structural features, achieved goals and effects of the present invention, the following will be described in detail in conjunction with the accompanying drawings.

[0096] The present invention provides a demand-side response-based microgrid multi-time scale energy management method, such as figure 1 As shown, a typical microgrid system includes energy supply equipment, auxiliary energy supply equipment and energy storage devices. The output ends of the unit 2, the micro gas turbine 3 and the battery 4 are all connected to the power transmission line, and the power transmission line is connected to the large power grid 12 through the switch 11. The auxiliary energy supply equipment includes the bromine cooling unit 5 and the electric boiler 6, and the energy storage device includes the battery 4 and The heat storage / cold tank 9 is used to store electric energy and heat energy respectively. The loads include electric load 7 and c...

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Abstract

The invention provides a microgrid multi-time scale energy management method based on the demand side response, which comprises the steps of S1, establishing an interruptible load model; S2, establishing a multi-energy interaction mechanism; S3, determining an objective function and constraint conditions of a day-ahead scheduling stage; S4, establishing a transferable load model; S5, establishinga penalty function for energy storage of a storage battery; S6, determining an objective function and constraint conditions of an intra-day scheduling stage; S7, correcting the day-ahead scheduling stage plan according to an output plan value of each energy source of the day-ahead scheduling stage; S8, establishing a closed-loop control system; S9, determining an objective function and constraintconditions of a real-time scheduling stage; S10, carrying out real-time feedback correction on the intra-day scheduling stage; and S11, carrying out simulation and verification. The invention providesa multi-time scale energy management method with multi-stage coordination and step-by-step refinement, scheduling strategies in different scheduling stages are designed according to resources at thepower generation side and the demand side, and the matching of load and renewable energy power generation in time sequence is facilitated.

Description

technical field [0001] The invention belongs to the field of optimal scheduling of micro-grids, and in particular relates to a multi-time-scale energy management method for micro-grids based on demand-side response. Background technique [0002] The basic task of micro-grid optimal scheduling is to reasonably and effectively arrange the output of each distributed power source and the interactive power with the distribution network according to a certain control strategy on the premise of meeting the load demand of the micro-grid system, so that the entire micro-grid The operation and maintenance costs and emission costs of the power grid are the lowest. The participation of demand-side resources in the optimal scheduling of micro-grids has great potential in improving the capacity of wind power acceptance. The micro-grid optimal scheduling technology that interacts between power supply and demand-side resources provides a new idea for the high penetration of renewable energy...

Claims

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Application Information

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IPC IPC(8): H02J3/46H02J3/38H02J3/32G06Q10/04G06Q50/06
CPCH02J3/383H02J3/386H02J3/46H02J3/32G06Q10/04G06Q50/06H02J3/003H02J2203/20Y02E70/30Y02E10/56Y02E10/76
Inventor 窦春霞米雪岳东张占强张博
Owner YANSHAN UNIV
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