Probability whole life cycle cost-based power transformer performance comprehensive evaluation method

A full life cycle, power transformer technology, applied in the direction of instruments, data processing applications, resources, etc.

Inactive Publication Date: 2014-06-18
SHIJIAZHUANG TIEDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009]Currently, the existing life-cycle cost model has the following problems: it does not consider the uncertainty of parameters, only evaluates the investment decision by a single index, and cannot fully reflect the comprehensive effectiveness

Method used

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  • Probability whole life cycle cost-based power transformer performance comprehensive evaluation method
  • Probability whole life cycle cost-based power transformer performance comprehensive evaluation method
  • Probability whole life cycle cost-based power transformer performance comprehensive evaluation method

Examples

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Effect test

Embodiment 1

[0077] A probabilistic whole life cycle cost power transformer efficiency evaluation method is characterized in that it includes the following steps:

[0078] (1) Using the life cycle cost model of the power transformer, estimate the probability distribution function of the life cycle cost of the power transformer, and calculate the probability life cycle cost, mean value, variance and standard deviation rate, including the following sub-steps:

[0079] A. Determine the life cycle cost model of the power transformer;

[0080] B. Collect the relevant data of each variable in the power transformer life cycle cost model and carry out probability analysis to it, and determine the probability distribution function;

[0081] C. Using the Monte Carlo simulation method to estimate the probability distribution function of the life cycle cost of the power transformer, the number of simulations is determined by the accuracy requirements of the performance evaluation of the power t...

Embodiment 2

[0131] A probabilistic full life cycle cost power transformer efficiency comprehensive evaluation method based on one of the above schemes, characterized in that reliability, maintainability, technological advancement and environmental impact are added to the evaluation index sequence of the matter-element model For the four indicators, the maintainability and technical advancement are scored by experts according to Table 4, and the environmental impact is scored by experts according to Table 5, and the average value of all expert scores is used as the index value.

[0132] The engineering background of this embodiment and the two alternatives are exactly the same as in Embodiment 1.

[0133] After determining the probability distribution function of the whole life cycle cost, and the power transformer of the project scheme 1 and scheme 2 of embodiment 1, the whole life probability cost and reliability, technological advancement, maintainability and environmental...

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Abstract

The invention discloses a probability whole life cycle cost-based power transformer performance evaluation method, which mainly comprises the steps: establishing a whole life cycle cost model of a power transformer; estimating a probability distribution function of the whole life cycle cost of the power transformer; quantitatively processing qualitative indicators; processing data in a standardized way; processing the data in a dimensionless way; evaluating an alternative scheme by using a matter-element model; determine an optimal scheme. According to the probability whole life cycle cost-based power transformer performance comprehensive evaluation method, the probability whole life cycle cost model is constructed by introducing the statistical theory, the cost parameter uncertainty is improved, the theory of matter-element is adopted to assess the alternative scheme, and thus the optimal scheme is more reasonable. The invention also discloses a probability whole life cycle cost-based power transformer performance comprehensive evaluation method, the reliability, technology advancement, serviceability and environmental impact indicators are increased, the efficient combination of reliability of the power transformer and reliability is realized, the utilization rate of the transformer is enhanced, and the power grid assets management level is improved.

Description

technical field [0001] The invention relates to a method for comprehensively evaluating the performance of a power transformer, in particular to a method for comprehensively evaluating the performance of a power transformer based on probabilistic full life cycle costs. Background technique [0002] The power transformer is one of the most expensive electrical equipment in the power system. The cost of its entire cycle life is of decisive significance to the economy of the power system operation. How to comprehensively evaluate the performance of the power transformer and make investment decisions has always been a difficult point in the work of the power system. and focus. [0003] The life cycle cost of power equipment generally includes initial investment cost, operation and maintenance cost, failure cost and decommissioning cost. In the prior art, the comprehensive evaluation of the efficiency of the power transformer is aimed at the construction of the cost of each stag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q50/06G06Q10/06
Inventor 卞建鹏孙晓云
Owner SHIJIAZHUANG TIEDAO UNIV
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