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Effectiveness evaluation method for transformer split cooling system

A cooling system and efficiency evaluation technology, which is applied in the field of efficiency evaluation of transformer split cooling system, can solve the problems of complex structure and cooling mode, and achieve the effects of easy promotion and use, easy acquisition, and improved operation and maintenance

Inactive Publication Date: 2017-09-01
SHANGHAI MUNICIPAL ELECTRIC POWER CO +3
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complexity of its structure and cooling method, its complexity is self-evident in terms of defect classification of cooling system and simulation calculation of cooling

Method used

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  • Effectiveness evaluation method for transformer split cooling system
  • Effectiveness evaluation method for transformer split cooling system
  • Effectiveness evaluation method for transformer split cooling system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Taking a 220kV oil / water secondary cooling split transformer as an example, the calculation method of this efficiency research system is illustrated. The split cooling transformer system has been in operation for 13 years. The defects of the split cooling system have gradually increased with the operation, and the equipment has also experienced component failures during operation. The specific parameters related to the evaluation are shown in the table. At the same time, the average failure time interval of the oil / oil circulation split transformer cooling system is 300 days, and the average failure repair time is 2 days.

[0067]

[0068] Availability factor A: from formula (3) and formula (4):

[0069]

[0070] a 2 =1-a 1 =0.007

[0071] Establish A matrix according to a1, a2. Credibility: from formula (6): d 11 =0.99,d 12 = 0.01.

[0072] Using expert investigation method and experience method to comprehensively evaluate the performance of various indica...

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Abstract

The invention discloses an effectiveness evaluation method for a transformer split cooling system. The method comprises the steps that S1, an ADC method is adopted to establish an availability matrix and a credibility matrix of the transformer split cooling system to obtain an available factor A and a credible factor D respectively; S2, the ADC method is adopted to establish an ability matrix of the transformer split cooling system by establishing multilevel ability vectors, and an analytic hierarchy process is utilized to solve an ability factor C; and S3, E=ADC calculation is adopted to obtain effectiveness of the transformer split cooling system. The method has the advantages that through the evaluation calculation method, operation, maintenance and transformation effectiveness of the cooling system can be greatly improved; calculation is performed based on four-dimensional data of the split cooling system, and all the data can be acquired easily from operating data; the method is suitable for various split cooling systems without special requirements and is convenient to use and popularize.

Description

technical field [0001] The invention relates to the technical field of large split cooling transformers, in particular to an efficiency evaluation method for a split cooling system of a transformer. Background technique [0002] Due to the rapid increase of electricity load in urban areas, the number of construction substations in urban areas increases accordingly. Considering issues such as land occupation area and urban environment coordination, the proportion of underground substations and indoor substations in new 110kV and above substations in large cities such as Beijing and Shanghai is increasing. Due to space constraints and heat dissipation requirements of power equipment, the cooling system of transformers for underground substations and indoor substations is often designed separately from the transformer body. At present, there is no research on the cooling efficiency evaluation technology system for split cooling transformers at home and abroad. At present, man...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20G06F2119/08
Inventor 魏本刚黄华王黎明姚周飞
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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