Unlock instant, AI-driven research and patent intelligence for your innovation.

Intelligent transformer air cooling system and control method thereof

An air-cooling system and transformer technology, applied in the direction of transformer/inductor cooling, non-electric variable control, transformer/inductor components, etc., can solve the problems of frequent switching of air-cooling devices, avoid frequent switching, and ensure reliability effect

Inactive Publication Date: 2017-05-24
STATE GRID SHANDONG ELECTRIC POWER CO QINGZHOU POWER SUPPLY CO +2
View PDF7 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is: when the temperature of the transformer fluctuates near the set temperature threshold, it will cause frequent switching of the air cooling device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Intelligent transformer air cooling system and control method thereof
  • Intelligent transformer air cooling system and control method thereof
  • Intelligent transformer air cooling system and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 , 2 As shown, the transformer intelligent air-cooling system includes a microprocessor module, several air-cooling devices and a power supply module, the air-cooling device includes a fan, and the microprocessor module is connected with a transformer oil temperature sensor, a fan power switching A switching protection device and a control and display device, the switching protection device includes a solid state relay and a motor protector, the solid state relay is connected with a contactor, and the control and display device includes a transfer switch, a control panel and a display panel.

[0028] The solid state relay can eliminate the arc in time when the power supply is switched, and prevent the contactor contacts from being burned by frequent switching of the air cooling device.

[0029] The motor protector implements short circuit, overload, locked rotor and phase loss protection for the air cooling device.

[0030] The transfer switch provides...

Embodiment 2

[0053] Transformer intelligent air-cooling system control method, including five modes: manual, automatic, remote, intelligent, and stop:

[0054] In manual mode, the air-cooling device is switched on and off manually, the power supply module is switched, and the fault signal is manually reset. The microprocessor module transmits system-related information to the display panel through its own programming port.

[0055] In automatic mode, the automatic cycle switching operation of the air-cooling device is realized by the microprocessor module. The microprocessor module automatically counts the cumulative running time and cumulative stop time of the air-cooling device. Remove the air-cooling device with the longest cumulative running time in turn, and turn on the air-cooling device with the shortest cumulative running time when the oil temperature on the top layer of the transformer is higher than the upper limit of the oil temperature. The microprocessor module transmits syste...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an intelligent transformer air cooling system which comprises a microprocessor module, a plurality of air cooling devices and a power module. The air cooling devices comprise fans, the microprocessor module is connected with a transformer oil temperature sensor, a fan power switching module, a fling-cut protection device and a control and display device, the fling-cut protection device comprises a solid-state relay and a motor protector, the solid-state relay is connected with a contactor, and the control and display device comprises a changeover switch, a control panel and a display panel. By the aid of the technical scheme, the fling-cut protection device replaces an alternating-current contactor to control fling-cut of the air cooling devices. When microprocessor programs make fling-cut decision, the problem of frequent fling-cut of the air cooling devices can be effectively avoided by the control strategy with differential margin fling-cut threshold values.

Description

technical field [0001] The invention relates to the technical field of transformer air cooling control, in particular to a transformer intelligent air cooling system and a control method thereof. Background technique [0002] The main circuit of the traditional transformer air-cooled control system adopts a single power supply mode, and the control components use contactors and relay logic controllers. The switching of the air-cooled device is realized by mechanical contacts, and the protection is realized through thermal relays. The traditional transformer air-cooled control system has defects such as complex control loops, low reliability, high failure rate, and heavy maintenance workload. The usual method of the traditional transformer air-cooling control system in controlling the automatic switching of the air-cooling device is: set a fixed temperature threshold, the transformer oil temperature exceeds the threshold relay action, put into the "auxiliary" air-cooling devi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01F27/08G05D27/02G05B19/042
CPCG05B19/042G05D27/02H01F27/085
Inventor 张跃文张洪利张伟王延岭赵继城类金杨慧张国林张勇攀刘东伟黄玉伟董中华闵建平于治军王冲史新海马红霞陈其涛王莉刘全张跃勇
Owner STATE GRID SHANDONG ELECTRIC POWER CO QINGZHOU POWER SUPPLY CO