CN109495989B - 变压器自热干燥装置 - Google Patents

变压器自热干燥装置 Download PDF

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CN109495989B
CN109495989B CN201811472250.XA CN201811472250A CN109495989B CN 109495989 B CN109495989 B CN 109495989B CN 201811472250 A CN201811472250 A CN 201811472250A CN 109495989 B CN109495989 B CN 109495989B
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transformer
power supply
winding
self
current power
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CN109495989A (zh
Inventor
于常乐
朱家正
张硕
徐胜
赵旭东
齐致
李良祎
戢超楠
赵飞
韩帅
佟德鑫
杜恒
裴昕莹
张宏波
赵娜
吴限
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State Grid Liaoning Electric Power Co Ltd
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00Details of electric heating devices
    • H05B1/02Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0227Applications
    • H05B1/023Industrial applications
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26DRYING
    • F26BDRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00Heating arrangements
    • F26B23/04Heating arrangements using electric heating
    • F26B23/06Heating arrangements using electric heating resistance heating
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/155Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
    • H02M7/1555Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit
    • H02M7/1557Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with control circuit with automatic control of the output voltage or current
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00Details of apparatus for conversion
    • H02M1/0003Details of control, feedback or regulation circuits
    • H02M1/0012Control circuits using digital or numerical techniques

Abstract

本发明提出的是变压器自热干燥装置。在单片机的P1.0接线端口输出的导线通过光电耦合器和电阻与双向可控硅电路连接,通过二极管输出脉动直流电源给变压器绕组;从单片机的INTO/P3.2接线端口输出导线经由贴片光电耦合器和整流桥,并经过电阻通向中频电源输出端,接入变压器的铁芯绕组;单片机的P1.1和P1.2接线端口分别通过开关器接地。本发明干燥效果好,速度快,能量转化效率高。同时采用可控硅和场效应管作为功率单元,电能转换效率高达97%以上。适宜作为变压器自热干燥装置应用。

Description

变压器自热干燥装置
技术领域
本发明提出的是电力领域的烘干装置,具体地说是变压器自热干燥装置。
背景技术
变压器在大修后如外部环境变化需要对变压器进行干燥处理,传统的变压器干燥采用烘箱外热烘干方式,需要将变压器送至变压器维修车间或搭建临时干燥环境,这样不仅大幅度降低了工作效率,同时,由于需要对变压器的拆装、搬运等作业容易对变压器造成二次伤害。
发明内容
为了克服现有技术烘干变压器存在的缺点,本发明提出了变压器自热干燥装置。该装置通过,解决变压器干燥的技术问题。
本发明解决技术问题所采用的方案是:
在单片机的P1.0接线端口输出的导线通过光电耦合器和电阻与双向可控硅电路连接,通过二极管输出脉动直流电源给变压器绕组;从单片机的INTO/P3.2接线端口输出导线经由贴片光电耦合器和整流桥,并经过电阻通向中频电源输出端,接入变压器的铁芯绕组;单片机的P1.1和P1.2接线端口分别通过开关器接地。
将装置引线加装到变压器引流线处,当需要对变压器绕组进行干燥时,微型控制器控制可控硅导通方式,将交流电源转换成脉动直流电源,通过电容积分将脉动直流电源转变为纹波较小的直流电源;
变压器绕组接入直流电源后,电抗效应仅由直流电阻体现,交流感抗为零,通过绕组自身发热,由内而外将绕组烘干;
当需要对铁心进行加热烘干时,内部微控制器输出震荡信号驱动场效应管组成的桥组,将工频电源或直流电源转变为中频电源,此时绕组电抗由交流感抗体现,直流电阻分量比重降低,绕组和铁芯内磁通量迅速饱和进而发热,由内而外进行加热烘干。
积极效果:本发明干燥效果好,速度快,能量转化效率高。同时采用可控硅和场效应管作为功率单元,电能转换效率高达97%以上。适宜作为变压器自热干燥装置应用。
附图说明
图1为本发明微控制器电路组成图。
图中,1.单片机,2.光电耦合器,3.双向可控硅,4.整流桥,5.贴片光电耦合器。
具体实施方式
微型控制器结构:
在单片机1的P1.0接线端口输出的导线通过光电耦合器2和电阻与双向可控硅3电路连接,通过二极管输出脉动直流电源给变压器绕组;
从单片机的INTO/P3.2接线端口输出导线经由贴片光电耦合器5和整流桥4,并经过电阻通向中频电源输出端,接入变压器的铁芯绕组;
单片机的P1.1和P1.2接线端口分别通过开关器接地。
所述微型控制器的电路上连接有温度传感器。
所述单片机采用STC12C2052AD型号。
所述光电耦合器采用MOC3020型号。
所述贴片光电耦合器采用P521-1型号。
所述双向可控硅电路上连接有630V0.06UF的电容器。
所述整流桥采用DB107型号。
工作过程:
将装置引线加装到变压器引流线处,当需要对变压器绕组进行干燥时,微型控制器控制可控硅导通方式,将交流电源转换成脉动直流电源,通过电容积分将脉动直流电源转变为纹波较小的直流电源;
变压器绕组接入直流电源后,电抗效应仅由直流电阻体现,交流感抗为零,通过绕组自身发热,由内而外将绕组烘干;
当需要对铁心进行加热烘干时,内部微控制器输出震荡信号驱动场效应管组成的桥组,将工频电源或直流电源转变为中频电源,此时绕组电抗由交流感抗体现,直流电阻分量比重降低,绕组和铁芯内磁通量迅速饱和进而发热,由内而外进行加热烘干。
同时两种加热烘干方法均配合温度传感器使用,保证变压器本体性能安全。
特点:
本设计由于采用自内而外的加热方式,干燥效果好,速度快,能量转化效率接近100%。同时采用可控硅和场效应管作为功率单元,电能转换效率高达97%以上。

Claims (2)

1.变压器自热干燥装置,其特征是:
在单片机(1)的P1.0接线端口输出的导线通过光电耦合器(2)和电阻与双向可控硅(3)电路连接,通过二极管输出脉动直流电源给变压器绕组;
从单片机(1)的INTO/P3.2接线端口输出导线经由贴片光电耦合器(5)和整流桥(4),并经过电阻通向中频电源输出端,接入变压器的铁芯绕组;
单片机(1)的P1.1和P1.2接线端口分别通过开关器接地;
所述单片机(1)采用STC12C2052AD型号;
所述光电耦合器(2)采用MOC3020型号;
所述贴片光电耦合器(5)采用P521-1型号;
所述双向可控硅电路(3)上连接有630V0.06UF的电容器;
所述整流桥(4)采用DB107型号;
将装置引线加装到变压器引流线处,当需要对变压器绕组进行干燥时,微型控制器控制可控硅导通方式,将交流电源转换成脉动直流电源,通过电容积分将脉动直流电源转变为纹波较小的直流电源;
变压器绕组接入直流电源后,电抗效应仅由直流电阻体现,交流感抗为零,通过绕组自身发热,由内而外将绕组烘干;
当需要对铁心进行加热烘干时,内部微控制器输出震荡信号驱动场效应管组成的桥组,将工频电源或直流电源转变为中频电源,此时绕组电抗由交流感抗体现,直流电阻分量比重降低,绕组和铁芯内磁通量迅速饱和进而发热,由内而外进行加热烘干。
2.根据权利要求1所述的变压器自热干燥装置,其特征是:
所述微型控制器的电路上连接有温度传感器。
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CN2648580Y (zh) * 2003-10-10 2004-10-13 深圳市力量科技有限公司 智能型无触点复合开关
CN201828843U (zh) * 2010-06-29 2011-05-11 华中农业大学 一种适用于芽菜培养箱的智能化控制器
CN202855493U (zh) * 2012-09-29 2013-04-03 苏州华电电气股份有限公司 现场变压器油处理自加热装置
CN203690095U (zh) * 2014-02-26 2014-07-02 苏州工业园区海沃科技有限公司 三电平低频烘燥电源
CN206923056U (zh) * 2017-03-29 2018-01-23 何广全 一种食物料理机的加热控制电路

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DE3942430A1 (de) * 1989-12-21 1991-09-19 Bosch Siemens Hausgeraete Elektrisches haushaltgeraet oder dgl.
CN101710532A (zh) * 2009-12-07 2010-05-19 河南省电力公司南阳供电公司 一种变压器的烘干方法
WO2014015886A1 (en) * 2012-07-26 2014-01-30 Hewlett-Packard Development Company, L.P. Electrical resistor heating

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2648580Y (zh) * 2003-10-10 2004-10-13 深圳市力量科技有限公司 智能型无触点复合开关
CN201828843U (zh) * 2010-06-29 2011-05-11 华中农业大学 一种适用于芽菜培养箱的智能化控制器
CN202855493U (zh) * 2012-09-29 2013-04-03 苏州华电电气股份有限公司 现场变压器油处理自加热装置
CN203690095U (zh) * 2014-02-26 2014-07-02 苏州工业园区海沃科技有限公司 三电平低频烘燥电源
CN206923056U (zh) * 2017-03-29 2018-01-23 何广全 一种食物料理机的加热控制电路

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