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Transformer respiratory system aerodynamic characteristic test platform and method

A technology of breathing system and aerodynamic characteristics, applied in the field of high-voltage power equipment state assessment, can solve problems such as calculating aerodynamic characteristics, and achieve the effect of improving safety and economy

Active Publication Date: 2020-03-06
GUANGDONG POWER GRID CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a given breathing system, its aerodynamic characteristics depend on multiple parameters, such as the geometric size and direction of the air path, the filling amount and humidity of silica gel, the ambient humidity and load fluctuations, and it is difficult to calculate the aerodynamic characteristics by analytical methods

Method used

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  • Transformer respiratory system aerodynamic characteristic test platform and method
  • Transformer respiratory system aerodynamic characteristic test platform and method
  • Transformer respiratory system aerodynamic characteristic test platform and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 As shown, a test platform for aerodynamic characteristics of a transformer breathing system includes an oil tank 1, insulating oil 2, a heating device 3, a simulated load power supply 4, an electronic oil level gauge 5, an oil conservator 6, a constant humidity box 7, a respirator 8, The first humidity controller 9, the second humidity controller 10, the pipeline hygrometer 11, the hygrometer 12 in the box, the terminal unit 13, the oil pipe 14 and the air pipe 15; It is connected with the oil conservator 6 through the air pipe 15 to realize the balance of the air pressure of the insulating oil 2 under the heating of the heating device 3; The electronic oil level gauge 5 is installed on the side of the oil conservator 6 and connected to the terminal 13 to realize real-time monitoring of the oil level of the oil conservator; the first humidity controller 9 and the second humidity controller 10 are installed in the constant humidity box At the bottom, th...

Embodiment 2

[0041] Such as figure 2 As shown, a method for testing the aerodynamic characteristics of a transformer breathing system includes the following steps:

[0042] S1: Obtain the oil level stabilization time of the breathing system;

[0043] S2: Breathing time index when obtaining oil level stabilization time;

[0044] S3: Determine the evaluation factor R of the aerodynamic characteristics of the respiratory system est ;

[0045] S4: Evaluate the aerodynamic characteristics of the transformer breathing system.

[0046] The specific process of step S1 is:

[0047] 1), the relative humidity that the constant humidity box (7) is set is H 1 (%), 101 ≤30, turn on the simulated load power supply (4), and obtain the time when the load factor is 0.5, 1.0, and 1.5 when the oil level reaches a stable level, respectively denoted as t 0.5 , t 1.0 , t 1.5 ;

[0048] 2), increase the relative humidity of constant humidity chamber (7) to H 2 (%), 402 ≤60, turn on the simulated load pow...

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Abstract

The invention provides a transformer respiratory system aerodynamic characteristic test platform and method. The method comprises the steps that a platform is used to acquire the oil level stabilization time of a respiratory system; the respiratory time index during the oil level stabilization time is acquired; the aerodynamic characteristic evaluation factor of the respiratory system is determined; and finally the aerodynamic characteristics of the transformer respiratory system are evaluated. According to the invention, the method for evaluating the aerodynamic characteristics of the respiratory system can be used to quickly judge the advantages and disadvantages of the aerodynamic characteristics of the given respiratory system, and the safety and economy of transformer operation are improved.

Description

technical field [0001] The invention relates to the field of state evaluation of high-voltage power equipment, and more specifically, to a test platform and method for aerodynamic characteristics of a transformer breathing system. Background technique [0002] Oil-immersed transformers are one of the most important equipment in AC power transmission and transformation systems. With the construction of UHV AC and DC transmission in full swing in my country, the voltage level and capacity of transformers are also moving towards a higher level. While the voltage level and capacity increase, higher requirements are put forward for the temperature rise control inside the transformer. In order to keep the temperature of the transformer not exceeding the temperature rise limit of the insulation system, the insulating oil circulates naturally or forcedly inside the transformer, bringing the heat inside the transformer to the radiator and finally escaping into the air. The insulatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00G06F17/18
CPCG01M99/00G06F17/18
Inventor 李恒真张乾良黄静陈道品武利会温源何子兰何旭亮李毅东杨建伟陈邦发陈斯翔温可明梁家盛
Owner GUANGDONG POWER GRID CO LTD