power utilities
TRANSCRIPT
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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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Any Queries?