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Hydro-thermal power system multi-target peak modulation method based on gravity search

A technology of gravitational search, water and thermal power, applied in information technology support systems, data processing applications, forecasting, etc., can solve problems such as single peak shaving target and lack of optimization mechanism

Active Publication Date: 2014-08-27
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0003] The existing power system dispatching technology generally determines the output of hydropower plants and thermal power plants through load shedding in accordance with the principle of power balance, and the peak shaving target is single
When dealing with the multi-objective peak shaving problem, the multi-objective is also transformed into a single-objective through object weighting. Only one scheduling plan can be obtained for one solution, and there is no optimization mechanism.

Method used

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  • Hydro-thermal power system multi-target peak modulation method based on gravity search
  • Hydro-thermal power system multi-target peak modulation method based on gravity search
  • Hydro-thermal power system multi-target peak modulation method based on gravity search

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Embodiment 1

[0069] A multi-objective peak-shaving method for hydrothermal power systems based on gravitational search, the method includes the following steps:

[0070] Step 1, Data Preparation

[0071] The scheduling period is 1 day, and the time period of the scheduling period is T=24; the system load in each time period is P D,t ;Number of hydropower stations N h , the maximum output value of each hydropower station Minimum output value The maximum storage capacity VOL of each hydropower station i,max , Minimum storage capacity VOL i,min , the initial storage capacity VOL of each hydropower station during dispatching period i,B and the end-of-period storage capacity VOL i,E , the maximum power generation flow value Q of each hydropower station i,max , the minimum generating flow Q i,min , the relationship curve of water level and storage capacity of each hydropower station, and the output coefficient K of each hydropower station i , the natural inflow runoff I of each hydrop...

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Abstract

The invention discloses a gravity search optimizing method of hydro-thermal power system multi-target peak modulation, and relates to the technical field of power system modulation. According to the method, a hydro-thermal power system multi-target peak modulation model is built firstly, the model is a target function with multiple constraint conditions, then optimization solution is carried out on the multi-target peak modulation model through a multi-target gravity search algorithm based on the Pareto optimization theory, a non-inferiority scheme set of target peak modulation of a hydro-thermal power system is obtained, and an optimized solution set achieving the two purposes of minimum system operation expenses and maximum hydropower modulation amount is obtained to be selected by a modulation decision-marking department.

Description

technical field [0001] The invention relates to the technical field of electric power system dispatching, in particular to an intelligent optimization algorithm in the dispatching process. Background technique [0002] In social production and life, there are differences in the demand for electricity at different times of the day, and there is a difference between peaks and valleys. The peak shaving of the hydrothermal power system is to make the output power of the power grid equal to the social demand load by arranging the output power of each power plant at each time period according to the different characteristics of hydropower plants and thermal power plants. [0003] The existing power system dispatching technology generally determines the output of hydropower plants and thermal power plants through load shedding in accordance with the principle of power balance, and the peak shaving target is single. When dealing with the multi-objective peak shaving problem, the mu...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06
CPCY04S10/54Y04S10/50
Inventor 方仍存李超顺李如海杜治
Owner STATE GRID CORP OF CHINA
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