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Modeling Method of Mixed Integer Programming Model for Microgrid Intraday Scheduling Plan

A technology of mixed integer programming and scheduling plan, which is applied in electrical digital data processing, computing, special data processing applications, etc.

Inactive Publication Date: 2018-06-22
SOUTH CHINA UNIV OF TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the limit value constraint equation is simply established for the reactive output constraints of distributed power, the complex reactive output characteristics of distributed power are ignored, which is out of the engineering reality.

Method used

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  • Modeling Method of Mixed Integer Programming Model for Microgrid Intraday Scheduling Plan
  • Modeling Method of Mixed Integer Programming Model for Microgrid Intraday Scheduling Plan
  • Modeling Method of Mixed Integer Programming Model for Microgrid Intraday Scheduling Plan

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Embodiment

[0072] The mixed integer programming model of microgrid intraday dispatch plan based on analytic geometry of the present invention, such as figure 1 As shown, including the following steps:

[0073] Step 1. Construct the objective function of the mixed integer programming model of the microgrid intraday dispatch plan, that is, under the condition of meeting the normal operation constraints, by rationally arranging the output of each controllable unit to minimize the total operating cost of the system, the specific steps are as follows:

[0074] details as follows:

[0075]

[0076] Where C deii,t , C mtjj,t And C fck,t They are the total operating costs of diesel generator ii, micro gas turbine jj, and fuel cell k during time period t, including fuel cost, start-up and shutdown costs, and maintenance cost; t∈T means time period t is within scheduling period T, ii∈I means Diesel generator ii belongs to diesel generator set I, jj∈J indicates that micro gas turbine jj belongs to micr...

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Abstract

The invention discloses a modeling method for a micro-grid intraday scheduling plan mixed integer programming model. The method comprises following steps: 1. constructing an objective function for the micro-grid intraday scheduling plan mixed integer programming model; 2. constructing linear constraint equations of active and reactive power generation for a diesel synchronous generator; 3. constructing linear constraint equations of active and reactive power generation for an inverter grid-connected distributed power source; 4. constructing linear constraint equations of active and reactive power generation for a double-fed induction blower fan; 5. constructing linear power flow equations considering voltage amplitudes; 6. constructing branch capacity linear constraint equations; and 7. forming the micro-grid intraday scheduling plan mixed integer programming model with the combination of existing linear constraints of the micro-grid and solving the model through mixed integer programming solving software. By employing the modeling method, the solving complexity of a micro-grid intraday scheduling plan problem can be effectively reduced, the calculation speed is rapid, the solving accuracy is high, and the engineering practical operability is high.

Description

Technical field [0001] The invention relates to a modeling method of a microgrid intraday dispatching plan model, in particular to a modeling method of a microgrid intraday dispatching plan mixed integer programming model. Background technique [0002] As an effective means to play the distributed power generation efficiency, microgrid technology has become a hot spot in the current smart grid theory and technology research. The microgrid has flexible operation modes, with grid-connected and island-connected operation modes, and can realize seamless switching between the two operation modes as required. However, microgrid energy management has its complexity. It not only needs to ensure the economic, safe and stable operation of microgrid under the premise of meeting load demand and power quality, but also coordinate the output of power sources with different response speeds, and smooth the wind power and photovoltaic power in the grid. Uncertainty, especially the high penetrati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 汪隆君许海林王钢丁茂生
Owner SOUTH CHINA UNIV OF TECH
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