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Economic life determination method and device for power transformer

A technology for power transformers and economic life, applied in the field of transformers, can solve problems such as poor accuracy, achieve accurate understanding, improve determination accuracy, avoid waste and reduce safety and reliability.

Inactive Publication Date: 2016-04-20
NORTH CHINA ELECTRICAL POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of poor accuracy of the determination result of the economic life of the power transformer in the prior art, the present invention further proposes a method and device for determining the economic life of the power transformer, specifically including the following technical solutions:

Method used

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  • Economic life determination method and device for power transformer
  • Economic life determination method and device for power transformer
  • Economic life determination method and device for power transformer

Examples

Experimental program
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Embodiment 1

[0065] This embodiment takes the analysis of the "generator no-load characteristic" curve as an example to illustrate the method for determining the economic life of the power transformer. image 3 As shown, the method includes:

[0066] Step 31: Obtain the original economic parameters of the power transformer by retrieving the life cycle cost database of the power grid company.

[0067] The following are the original economic parameters of the power transformer in actual operation. Now combine the data provided by a power grid company to determine the economic life of the power transformer.

[0068] The obtained raw economic parameters are shown in the table below:

[0069] Table 1 Basic Economic Parameters

[0070] Voltage level (KV)

500

Rated no-load loss

0.11％

Elapsed time (years)

20

Rated load loss

0.32％

cooling method

ODAF

Rated power (KW)

267000

[0071] Table 2 Initial Investment Economic Parameters

...

Embodiment 2

[0111] This embodiment provides a device for determining the economic life of a power transformer, combining Figure 4 shown, including:

[0112] A parameter acquisition unit 41, configured to acquire the original economic parameters of the power transformer;

[0113] The blinding processing unit 42 is used to perform blinding processing on the original economic parameters according to the influencing factors of the economic life and convert them into a blind number expression form;

[0114] The fusion unit 43 is used to fuse the blind number expressions of the original economic parameters based on the D-S evidence theory and obtain the quantitative values ​​of the original economic parameters;

[0115] The economic life determining unit 44 is configured to determine the economic life of the power transformer according to the quantitative value of the original economic parameter.

[0116] Among them, the parameter acquisition unit 41 can acquire parameters such as basic econ...

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Abstract

The invention provides an economic life determination method and a device for a power transformer, and belongs to the technical field of transformers. The method comprises the steps of acquiring the original economic parameters of a power transformer; conducting the blind treatment on the original economic parameters according to the influence factors of the economic life and converting the original economic parameters into the blind data expression form; based on the D-S evidence theory, fusing the blind data expression form of the original economic parameters to obtain the quantized value of the original economic parameters; according to the quantized value of the original economic parameters, determining the economic life of the power transformer. According to the technical scheme of the invention, the economic life of the power transformer can be accurately determined. In this way, the problem in the prior art that parameters for the analysis on the economic life of the power transformer are too blurry and podzolic can be solved. The determination accuracy of the economic life of the power transformer is improved. As a result, the operation, maintenance and management personnel of the power system can understand the operating period of the power transformer more accurately. The economic waste and the decreasement of the security and the reliability for power grid enterprises caused during the improper operation can be avoided. The method and the device have higher social and economic benefits.

Description

technical field [0001] The invention relates to a method and a device for determining the economic life of a power transformer, belonging to the technical field of transformers. Background technique [0002] As one of the most important electrical equipment in the power system, the power transformer has a great influence on the power system whether it can operate safely, reliably and economically. At present, due to the lack of scientific and effective power transformer renewal decision-making schemes, the length of service time is usually used as the basis for power transformer replacement, and the economic performance of power transformers is not considered, resulting in some power transformers that are operating well. Poor transformers delay decommissioning. Therefore, how to determine the economic life of power transformers is an urgent problem to be solved in the power industry. [0003] In view of the fact that the power transformer is affected by internal and extern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 郭绍伟臧春艳马继先蔡巍龙凯华李昊扬赵延文
Owner NORTH CHINA ELECTRICAL POWER RES INST
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