Standby decision-making method for fully considering reliability and economical efficiency of electric system

A technology for power systems and decision-making methods, which is applied in electrical digital data processing, special data processing applications, instruments, etc., and can solve problems such as decreased calculation accuracy, difficult computer solutions, and large computational dimensions and search space.

Inactive Publication Date: 2017-01-04
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The expression of reliability index is highly nonlinear and combinatorial. Together with the unit combination problem, the calculation dimension and search space are very large, and it is difficult for a computer to solve it.
At present, domestic and foreign methods of optimizing the probability of spinning

Method used

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  • Standby decision-making method for fully considering reliability and economical efficiency of electric system
  • Standby decision-making method for fully considering reliability and economical efficiency of electric system
  • Standby decision-making method for fully considering reliability and economical efficiency of electric system

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Embodiment Construction

[0061] The present invention is described in detail below in conjunction with accompanying drawing:

[0062] Such as figure 1 As shown, a backup decision-making method that considers the reliability and economy of the power system as a whole, including:

[0063] Step 1, run a most basic unit combination, and establish COPT based on the unit combination results;

[0064] Step 2, express EENS as a piecewise linearization expression of SSR based on COPT;

[0065] Step 3, run the spinning standby optimization model with EENS analytic expression, and establish COPT from the running results;

[0066] Step 4, judging whether the convergence condition is satisfied, if convergence exits the operation, otherwise return to (2).

[0067] In step 1, the objective function is:

[0068] min { Σ t = 1 N T Σ i = 1

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Abstract

The invention discloses a standby decision-making method for fully considering the reliability and the economical efficiency of an electric system. The method comprises the steps that a most basic unit commitment is operated, and a capacity loss probability table (COPT) is set up based on the unit commitment result; the EENS is expressed as a piecewise linearization expression of an SSR based on the capacity loss probability table (COPT); a spinning reserving optimization model carrying an EENS analytical expression is operated, and a capacity loss probability table (COPT) is set up again through the operation result; whether convergence conditions are met or not is judged, if convergence is achieved, operation quits, otherwise, the step of expressing the EENS as the piecewise linearization expression of the SSR based on the COPT is executed again till the convergence conditions are met. The EENS is analyzed into a piecewise linear function only relevant to the SSR, the complexity of the EENS is greatly reduced, and the EENS can be solved easily. Spinning reservation can be automatically optimized between the reliability and the economical efficiency, and calculating efficiency is effectively improved.

Description

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Claims

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Application Information

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Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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