Condition Monitoring Using Infrared Thermography

CONDITION MONITORING USING INFRARED THERMOGRAPHY

Presented by: Racheal Lim Electrical Engineer Certified Thermographer level 1 Technical Support(Condition Monitoring Unit) Jabatan Senggaraan Penghantaran Working Experience: 41/2 years

Prepared By: Racheal Lim (JSP)

SESB TECHNICAL CONFERENCE 2009 “BRIDGING TOWARDS COMPETENCY EXCELLENCE 2012” "Bridging Towards Competency Excellence 2012"

Abstract This paper is emphasizing monitoring using infrared diagnostic indicator of infrared describes the important thermography as well as its power utility.

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on condition thermography, thermography, elements in advantages to

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Transmission Main Objectives

To reduce System Minutes and SAIFI To improve System Reliability

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To reduce no. of unplanned breakdown or no. of tripping

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MAINTENANCE APPROACHES PREVENTIVE MAINTENANCE PREDICTIVE MAINTENANCE

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PREDICTIVE MAINTENANCE

ULTIMATE GOAL! To perform maintenance “just in time”, before the equipment fails in service CONDITION MONITORING Prepared By: Racheal Lim (JSP)

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Definition of Condition Monitoring CONDITION MONITORING IS ONE PART OF THE MAINTENANCE PROCESS WHERE THE CONDITION OF THE PRIMARY EQUIPMENT IS MONITORED AND ANALYZED FOR EARLY SIGNS OF IMPENDING FAILURE. Prepared By: Racheal Lim (JSP)

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Objective of Condition Monitoring Unit

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Types of condition monitoring OFFLINE CONDITION MONITORING ONLINE CONDITION MONITORING Prepared By: Racheal Lim (JSP)

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DEFINITION OF ONLINE CONDITION MONITORING “Online condition monitoring is any condition monitoring test equipment that used to monitor the condition of a primary equipment online.” Prepared By: Racheal Lim (JSP)

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Types of Online Condition Monitoring 1. Infrared Thermography for Substations

and Lines. 2. Dissolved Gas Analysis (DGA) for Transformer 3. Leakage Current Measurement for Surge Arrester. 4. Ultrasonic Corona Leak Detector for Metal Clad Switchgear, Outdoor Clamps and connectors. Prepared By: Racheal Lim (JSP)

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Definition of Infrared Thermography INFRARED THERMOGRAPHY IS THE SCIENCE OF ACQUISITION AND ANALYSIS OF THERMAL INFORMATION FROM NONNON - CONTACT THERMAL IMAGING DEVICES.

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Definition of Thermography Thermography means “writing with heat”. Just like Photography means “writing with light” The picture that is generated is called a thermogram or thermal image. Infrared is what makes it a non-contact method. Uses remote-sensing. Thus, it keeps the user out of danger. Prepared By: Racheal Lim (JSP)

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Example of Thermogram / Thermal Image

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What Makes Thermography so Useful?

It’s a 2Dimensional It is Real Time

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It’s a noncontact – uses remote sensing

Diagnostic indicator:

Hotspots Hot Spot

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Hot Spot can occurs on:
All Terminations and Connections of conducting

part of all primary equipment in the switchyard such as:
CB
Isolator
Transformer Bushing
Clamps and etc

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How Hot Spot happens?
Loose connections
Load imbalances
Corrosion
Increase in impedance to current.

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How Do Thermal Imaging Infrared Cameras Work An infrared camera is a noncontact device that detects infrared energy (heat) and converts it into an electronic signal, which is then processed to produce a thermal image on a video monitor and perform temperature calculations Prepared By: Racheal Lim (JSP)

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Why measure temperature? •

To know the operating condition of electrical and mechanical targets.

•

To compare Temperature Measurements with: • •

Historical Operating Temperature Temperature readings of similar equipment at the same time.

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Why Use Infrared? A picture says a thousand words
Infrared thermography is the only diagnostic

technology that :
Lets you instantly visualize and verify thermal performance.
Quickly locate hot spots
Determine the severity of problem
Help establish the time frame in which the equipment should be repaired. Prepared By: Racheal Lim (JSP)

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132kV Karambunai – Kolopis Line 1

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132kV Karambunai – Kolopis Line 1 BEFORE

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AFTER

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132kV Karambunai – Kolopis Line 1 Damaged bolts

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New Bolts

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132kV Karambunai – Kolopis Line 1 BEFORE

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AFTER

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132kV Karambunai – Kayu Madang Line 1 BEFORE

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AFTER

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132kV Karambunai – Kayu Madang Line 1 DAMAGED BOLTS

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Example of Hotspot Found on Other Primary Equipment

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PMU Tg. Aru CLS 132kV, Labuan

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PMU Beaufort 132kV

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PMU Kota Kinabalu 66kV

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PMU Mengaris 132kV (33kV Cable Termination)

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Benefits of Infrared Thermography 1 . Avoidance of unplanned power outages

by identifying hotspots/problem areas. 2 . Faster mode of troubleshooting & predictive maintenance 3 . Reduced inspection costs 4 . Accurate fault / hotspot detection 5 . Planned shut downs can be arranged if problem areas/ equipment are identified. Prepared By: Racheal Lim (JSP)

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Benefits of Infrared Thermography 6 . Reduced power outage costs. 7 . Reduction of overall failure rate 8 . Lower operational cost

9. Inspection is performed while

electrical systems are under Load 1 0 . Enhanced safety & loss prevention.

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CONCLUSION Infrared Thermography has invaluable resource that is

proven

to

be

an

 cost effective valuable diagnostic tool I m p r o v i n g s y s t e m e f f i c i e n c y , p o w e r q u a l i t y ,

workers' safety as well as; A v e r t i n g o u t a g e s , v a l u a b l e e q u i p m e n t f a i l u r e and line losses. Prepared By: Racheal Lim (JSP)

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-End of Slides-

THANK YOU “BRIDGING TOWARDS COMPETENCY EXCELLENCE 2012” [email protected] Prepared By: Racheal Lim (JSP)

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