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Temperature display controlling device for dry-type transformer

A dry-type transformer, display control technology, applied in the direction of temperature control, non-electric variable control, control/regulation system, etc., can solve problems such as the inability to meet the real-time status monitoring of transformers

Active Publication Date: 2012-09-26
QINGDAO SHENGPING ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It does not adapt to the development trend of modern condition maintenance. Although there are many types of detection methods, they cannot meet the needs of real-time condition monitoring of transformers.

Method used

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  • Temperature display controlling device for dry-type transformer
  • Temperature display controlling device for dry-type transformer

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Embodiment Construction

[0018] The dry-type transformer temperature display controller of the invention is used for measuring, storing, controlling and displaying the operating parameters of the dry-type transformer in operation on site. Its circuit structure is as figure 1 As shown, it consists of temperature sensing element input 1, current sensor input 2, filter amplifier circuit 3, A / D conversion module 4, single-chip microcomputer module 5, keyboard display module 6, storage module 7, cooling fan drive output 8, over-temperature alarm Troubleshooting consists of 9 components. Among them, the input 1 of the temperature sensing element adopts four Pt100 platinum resistors, three of which are used for temperature measurement of the three-phase winding, and the other platinum resistor is used for measuring the ambient temperature of the machine room. Current sensor input 2, consisting of three current transformers, is used to measure three-phase load current. The filter amplifier circuit 3 adopts ...

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Abstract

The invention relates to a temperature display controlling device for a dry-type transformer, which is used for temperature display, opening and closing of a cooling fan, as well as overheating and over-temperature alarm and troubleshooting during the site operation, and particularly relates to the device used for detecting temperature time constant variation as well as storing and displaying data of a dry-type transformer switched in a power network. The temperature display controlling device is used for judging the operation condition of the dry-type transformer, capturing failure forewarning information and realizing condition-based maintenance.

Description

(1) Technical field: [0001] The invention relates to a dry-type transformer temperature display controller, which is used for temperature display and cooling fan start-up and shutdown during on-site operation, as well as overheating and over-temperature alarm fault processing, in particular to the temperature time constant of a dry-type transformer connected to a power grid The changed detection data is stored and displayed, which is used to determine the operation status of dry-type transformers, capture fault precursor information, and realize state-of-the-art maintenance. (two) background technology: [0002] The existing dry-type transformer temperature display controllers only have operating temperature display and cooling fan start-stop control. If you want to obtain transformer status information, the traditional methods are visual inspection, physical and chemical tests, high-voltage electrical tests and relay protection. The method belongs to routine test and inspec...

Claims

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Application Information

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IPC IPC(8): G05D23/20
Inventor 张金木
Owner QINGDAO SHENGPING ELECTRICAL
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