condition monitoring using infrared thermography

SESB TECHNICAL CONFERENCE SESB TECHNICAL CONFERENCE SESB TECHNICAL CONFERENCE SESB TECHNICAL CONFERENCE

CONDITION

MONITORING USING

INFRARED

THERMOGRAPHY

Presented by: Racheal Lim

Electrical Engineer SESB TECHNICAL CONFERENCE SESB TECHNICAL CONFERENCE SESB TECHNICAL CONFERENCE SESB TECHNICAL CONFERENCE

2009200920092009

“BRIDGING TOWARDS “BRIDGING TOWARDS “BRIDGING TOWARDS “BRIDGING TOWARDS

COMPETENCY EXCELLENCE COMPETENCY EXCELLENCE COMPETENCY EXCELLENCE COMPETENCY EXCELLENCE

2012”2012”2012”2012”

Electrical Engineer

Certified Thermographer level 1

Technical Support(Condition Monitoring Unit)

Jabatan Senggaraan Penghantaran

Working Experience: 41/2 years

Prepared By: Racheal Lim (JSP) "Bridging Towards Competency Excellence 2012"

Abstract

This paper is emphasizing on conditionmonitoring using infrared thermography,diagnostic indicator of infrared thermography,describes the important elements indescribes the important elements inthermography as well as its advantages topower utility.


Transmission Main Objectives

To improve

To reduce System Minutes and SAIFI

To improve System Reliability

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


PREVENTIVE MAINTENANCE

MAINTENANCE APPROACHES

PREVENTIVE MAINTENANCE

PREDICTIVE MAINTENANCE


PREDICTIVE MAINTENANCE

ULTIMATE GOAL!

To perform maintenance “just in time”, before the


“just in time”, before the equipment fails in service

CONDITION MONITORING

CONDITION MONITORING IS ONE

PART OF THE MAINTENANCE

Definition of Condition Monitoring

PART OF THE MAINTENANCE

PROCESS WHERE THE CONDITION

OF THE PRIMARY EQUIPMENT IS

MONITORED AND ANALYZED FOR

EARLY SIGNS OF IMPENDING

FAILURE.


Objective of Condition Monitoring Unit


Types of condition monitoring

OFFLINE CONDITION MONITORING


ONLINE CONDITION MONITORING

MONITORING

“Online condition monitoring is

any condition monitoring test

DEFINITION OF ONLINE CONDITION MONITORING

any condition monitoring test

equipment that used to monitor

the condition of a primary

equipment online.”


Types of Online Condition Monitoring

1. Infrared Thermography for Substations and Lines.

2. Dissolved Gas Analysis (DGA) for Transformer

Leakage Current Measurement for Surge 3. Leakage Current Measurement for Surge Arrester.

4. Ultrasonic Corona Leak Detector for Metal Clad Switchgear, Outdoor Clamps and connectors.


INFRARED THERMOGRAPHY INFRARED THERMOGRAPHY INFRARED THERMOGRAPHY INFRARED THERMOGRAPHY IS THE IS THE IS THE IS THE

SCIENCE OF ACQUISITION AND SCIENCE OF ACQUISITION AND SCIENCE OF ACQUISITION AND SCIENCE OF ACQUISITION AND

Definition of Infrared Thermography

SCIENCE OF ACQUISITION AND SCIENCE OF ACQUISITION AND SCIENCE OF ACQUISITION AND SCIENCE OF ACQUISITION AND

ANALYSIS OF THERMAL ANALYSIS OF THERMAL ANALYSIS OF THERMAL ANALYSIS OF THERMAL

INFORMATION FROM NONINFORMATION FROM NONINFORMATION FROM NONINFORMATION FROM NON----CONTACT CONTACT CONTACT CONTACT

THERMAL IMAGING DEVICES.THERMAL IMAGING DEVICES.THERMAL IMAGING DEVICES.THERMAL IMAGING DEVICES.


Thermography means “writing with Thermography means “writing with Thermography means “writing with Thermography means “writing with Thermography means “writing with Thermography means “writing with Thermography means “writing with Thermography means “writing with heat”. heat”. heat”. heat”.

Just l ike Just l ike Just l ike Just l ike

Definition of Thermography

Just l ike Just l ike Just l ike Just l ike

Photography means “writing with l ight” Photography means “writing with l ight” Photography means “writing with l ight” Photography means “writing with l ight”

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.


Example of Thermogram / Thermal Image


What Makes Thermography so Useful?

It’s a non-contact –

It’s a 2-Dimensional


It is Real Time

contact –uses remote

sensing

Diagnostic indicator: Hotspots

Hot Spot


Hot Spot can occurs on:

� All Terminations and Connections of conducting part of all primary equipment in the switchyard such as:

� CB

Isolator� Isolator

� Transformer Bushing

� Clamps and etc


How Hot Spot happens?

�Loose connections

�Load imbalances

�Corrosion �Corrosion

� Increase in impedance to current.


An infrared camera is a non-contact device that detects infrared energy (heat) and

How Do Thermal Imaging Infrared Cameras Work

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


• To know the operating condition of electrical and mechanical targets.

Why measure temperature?

• To compare Temperature Measurements with:

• Historical Operating Temperature

• Temperature readings of similar equipment at the same time.


Why Use Infrared?

� Infrared thermography is the only diagnostic technology that :

�Lets you instantly visualize and verify thermal

A picture says a thousand words

�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.


132kV Karambunai – Kolopis Line 1


BEFOREBEFORE AFTERAFTER



Damaged boltsDamaged bolts New BoltsNew Bolts




132kV Karambunai – Kayu Madang Line 1


DAMAGED BOLTSDAMAGED BOLTS

132kV Karambunai – Kayu Madang Line 1


Example of Hotspot Found on Other


Primary Equipment

PMU Tg. Aru CLS 132kV, Labuan


PMU Beaufort 132kV


PMU Kota Kinabalu 66kV


PMU Mengaris 132kV (33kV Cable Termination)


1. Avoidance of unplanned power outages by identifying hotspots/problem areas.

Benefits of Infrared Thermography

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.


6. Reduced power outage costs.

7.Reduction of overall failure rate

Benefits of Infrared Thermography

8.Lower operational cost

9.Inspection is performed while electrical systems are under Load

10.Enhanced safety & loss prevention.


Infrared Thermography has proven to be aninvaluable resource that is

CONCLUSION

� cost effective

�valuable diagnostic tool

�Improving system efficiency, power quality,

workers' safety as well as;

�Averting outages, valuable equipment failure

and line losses.


THANK THANK THANK THANK

-End of Slides-

THANK THANK THANK THANK

YOUYOUYOUYOU


“BRIDGING TOWARDS COMPETENCY EXCELLENCE 2012”

[email protected]

condition monitoring using infrared thermography

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