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Novel intelligent control cabinet for transformer cooler

An intelligent control cabinet and cooler technology, applied in transformer/inductor cooling, electrical program control, program control in sequence/logic controllers, etc., can solve problems affecting long-term safe operation and service life of transformers, changes, etc.

Inactive Publication Date: 2013-12-18
洛阳恒光特种变压器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to keep the transformer temperature within a reasonable range, different types of transformers adopt different cooling methods "manual" and "automatic". Due to the influence of the above factors, the temperature of the transformer will still change continuously. , thus affecting the long-term safe operation and service life of the transformer

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0005] specific implementation plan

[0006] Use PLC as the control part of the cooling device. In addition to the CPU, the PLC is also equipped with an analog input module, an analog output module, a relay input module, a relay output module and a corresponding RS485 interface for communication with the upper computer. The analog quantity input module mainly inputs the 4mA~20mA temperature signal of the transformer oil surface temperature controller; the main input quantity of the relay type input module is: the auxiliary contact of the two-way main power contactor, the selection switch contact, the switch of each oil pump and fan Auxiliary contact, the inverter working condition signal reflecting the running status of each fan; the relay output module is connected to the output device controlling each oil pump and fan switch, and the required signal reflecting the cooler operating condition; the analog output module is connected to the inverter output conditioning signal. ...

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PUM

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Abstract

A novel intelligent control cabinet for a transformer cooler is characterized in that XBKP-PB (for plate radiators) and XBKF-PB (for forcible oil circulation coolers) novel intelligent control cabinet series with PLC (programmable logic controller) combining with frequency converters are used to control the transformer cooler. The PLC is used as the control part of the cooling device. A CPU (central processing unit), a simulation amount input module, a simulation amount output module, a relay input module, a relay output module and a corresponding RS485 communicated with an upper computer are disposed. The relay input module mainly inputs auxiliary contacts of two paths of main power supply contactors, selective switch contacts, auxiliary contacts of oil pumps and fans, and frequency converter working condition signals reflecting operation status of the fans. The relay output module controls output equipment of the oil pumps and the fans, and required signals for reflecting operation working status of the cooler.

Description

Technical field [0001] The invention relates to the field of system control, in particular to a novel intelligent control cabinet for a transformer cooler. Background technique [0002] The overall temperature change during transformer operation is affected by transformer loss and ambient air temperature. Transformer losses include no-load losses and load losses. The no-load loss always exists after the transformer is put into operation, and the load loss changes with the load of the transformer. The greater the load of the transformer, the greater the loss and the higher the temperature rise of the transformer; the greater the load change, the temperature of the transformer The greater the change. In addition, judging from the actual situation of the annual changes in the national power load market, the colder or hotter the weather, the faster the increase in power load and the higher the temperature rise of the transformer; The superimposition of changes in load peak-to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/05H01F27/08
Inventor 孙民
Owner 洛阳恒光特种变压器有限公司
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