Power Utilities

7/28/2019 Power Utilities

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IMPLEMENTATION OF IR

THERMOGRAPHY IN

POWER UTIL I TIES


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ROADMAP TO THE TOPIC

INTRODUCTION

I R ENERGY

I R THERMOGRAPHY

THERMALIMAGING CAMERA

VISUAL IMAGE CREATION

IMPLEMENTATION IN POWER UTIL I TIES

ADVANTAGES CONCLUSION


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INTRODUCTION

The visual detection of any abnormal anddefective electrical apparatus wiring that

cannot be viewed by our naked eye The science of seeing heat

This technique is used to remotely gather

thermal information of the electricalcomponents on an entire system and fromgeneration to end user.


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INFRARED ENERGY

It is a part of electromagnetic

spectrum and behaves

similarly to visible light.

It travels through space at the

speed of light and can bereflected, refracted, absorbed,

and emitted.

The wavelength of IR energy

is about an order of magnitude

longer than visible light,

between 0.7 and 1000 m

(millionths of a meter).


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PROPERTIES OF INFRARED

ENERGY

All objects emit infrared radiation as a function oftheir temperature.

Infrared energy is generated by the vibration and

rotation of atoms and molecules. The higher the temperature of an object, the more

the motion and hence the more infrared energy isemitted.

This is the energy detected by infrared cameras.The cameras do not see temperatures, they detectthermal radiation.


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IR THERMOGRAPHY

IR thermography is the science of acquisition and

analysis of thermal information using non contact

thermal imaging devices.

The amount of radiation emitted by an object

increases with temperature; thermography

allows one to see variations in temperature


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VISUAL IMAGE CREATION

An infrared imaging device contains one ormore detectors that convert energy in the

infrared spectrum into an electrical signal.

The electrical signals are typically formatted

into a video signal and displayed on aCRT/LCD.

. The amplitudes of the electrical signals are

then displayed as varying intensities on theCRT/LCD


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IR THERMAL IMAGE


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IMPLEMENTATION IN POWER

UTILITIES

In power generation

In power transmission

In examining loads


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POWER GENERATION

Boilers, Furnaces, and Refractory

Process lines Line blockage

Fluid cooler


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PROCESS LINES

PROCESS LINES


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LINE BLOCKAGE


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FLUID COOLER


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POWER TRANSMISSION

Consistent, reliable electricity delivery is one

of a power generators highest priorities and

infrared thermography is a viable method of

regularly monitoring power distribution

equipment.


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SUBSTATION VIEW


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CONNECTIONS


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POWER TRANSFORMERS


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CABLE TO BUS BAR CONECTIONS


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SUBSTATION COMPONENTS

CIRCUIT BREAKER

BUSHING PROBLEM


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LOADS

APPLICATIONS

Drives/Conveyors, Couplings,

Gears, Power Transmission

Belts, Pulleys, Shafts.

Pumps/Compressors/Fans/Blo

wers

Motors

Ovens, Furnaces, Kilns, Pipes

Internal Combustion Engines

Heavy Duty Equipment - Tires,

Bearings, Brakes, Hydraulics,Kilns, Ball Mills, Paper

Machines

CONDITIONS DETECTED

Overheated bearings orrollers, misalignment of shaft,

pulley or coupling, lubrication

failure uneven pressure.

High compressor dischargestemperature, high oil

temperature, and broken or

defective valve

Overheating of windings and

bearings, blockages in coolingpassages, friction, damping,

material deformations, brush

contact problems, rotors


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LOADS: motor

When comparing these two motors, the thermal

patterns are similar but there is a marked overall

temperature rise on the motor on the left.


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ADVANTAGES:

Infrared inspection is non-contact.

It uses remote sensing

Electrical equipment is inspected during

operation

Improved and less expensive maintenance

Safety

No service interruption is required for infrared

inspections.


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CONCLUSION

Infrared Thermography is currently experiencing rapid growth as moreand more electric utilities and industrial sectors are embracing thetechnology.

The reason for this growth is that company personnel are understandingthe benefits of this non-contact, nondestructive method, the main

benefit being to find deteriorating components prior to catastrophicfailure.

Thermography provides another set of eyes, allowing for a whole newlevel of diagnostic aid and problem solving.

The increased sensitivity of newer designs rejection of unwanted

reflections .improvements of specific point resolution and in depthtraining have contributed to

Infrared Imaging as an Effective Condition Monitoring System .


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THANK YOU


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