An Optimal Configuration Method for Independent Microgrids Considering Price-based Demand Response

A technology of demand response and optimal configuration, applied in the direction of circuit devices, AC network circuits, AC network voltage adjustment, etc., can solve problems such as poor economic benefits

CN105977991BActive Publication Date: 2018-07-10ZHEJIANG UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-07-10

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Abstract

The invention provides an independent micro grid optimization configuration method considering price-type demand response. The method includes steps of S1, performing discretization on 24 hours in one day and dividing the 24 hours into T periods, wherein the time length of the t period is Delta t and t is an arbitrary period, drawing a curve of regular load in a micro grid; S2, drawing a short period new energy power generation power curve, making real time electricity prices for micro grid users according to the new energy power generation power curve and the regular load curve, wherein a low electricity price is used in periods when the new energy power generation power curve is greater than the regular load curve and a high electricity price is used in periods when the new energy power generation power curve is smaller than the regular load curve; S3, establishing a demand response optimization model and guiding user electricity consumption behaviors; S4, determining a wind / light / diesel / storage micro power source power generation model and establishing a micro grid optimization configuration model by taking an annual value such as a life cycle and the like of the micro grid as a target; S5, solving the established micro grid optimization configuration model and obtaining an optimization configuration scheme. The method provided by the invention is good in economical benefits.
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Description

technical field

[0001] The invention belongs to the technical field of micro-grid planning and design, and in particular relates to an independent micro-grid optimization configuration method considering price-based demand response. Background technique

[0002] As an effective organizational form of new power sources such as wind and solar, micro-grid has received widespread attention and more and more applications in recent years. It is an effective solution to the problem of power consumption in islands and remote areas. Microgrid can improve power supply reliability and power quality, and at the same time switch from diesel power generation to wind power generation, reducing pollution emissions. However, the randomness and volatility of wind and solar resources increase the uncertainty of power generation, and there is a serious problem of wind and wind consumption. It is not economical to rely solely on the configuration of energy storage to stabilize fluctuations. Dem...

Examples

Embodiment Construction

[0058] The present invention will be further described below.

[0059] An independent microgrid optimization configuration method considering price-based demand response, comprising the following steps:

[0060] Step 1: Discretize the continuous 24h time in a day, and divide it into T periods. For any tth period, there is t∈{1,2,...,T}, and the duration of the tth period is Δt , to draw the conventional load curve in the microgrid;

[0061] Step 2: Draw a short-term new energy power generation power curve, and formulate real-time electricity prices for microgrid users based on the new energy power generation power curve and conventional load curve. When the new energy power generation power curve is greater than the conventional load curve, the electricity price is low. The period when the generated power curve is smaller than the normal load curve is high electricity price;

[0062] Step 3: Establish a demand response optimization model to guide users' electricity consumpti...