Course Outline for Primary Equipment Testing and Maintenance
Course Outline for CBM for Underground Power Cables
Course Outline for CBM for Transformers
Course Outline for CBM for Medium Voltage Switchgears
Course Outline for Primary Equipment Testing and Maintenance
- Introduction
The commissioning of any electrical equipment, regardless of its size, is a very special event and presents some outstanding problems. A lack of experience in dealing with such problems could result in delays in energizing the equipment and thereby leading to revenue losses. While in service the asset managers have bigger responsibilities to operate and maintain the electrical equipment in such a way so as to derive maximum return on investment. Preventive maintenance (PM) is the technique practiced by the asset managers in maintaining equipment on a regular interval based on elapsed time. The objective of PM is to “prevent” failures before they could take place by following comprehensive maintenance schedule. This course provides guidelines to anyone who wishes to know and understand commissioning and in-service maintenance testing techniques of major components of an electrical distribution system such as transformers, cables, disconnects and switchgear.
- Objectives
- This course will provide guidelines on commissioning and start-up testing procedures of major
components of an electrical distribution system such as transformers, cables and switchgear.
- This course will discuss various routine and maintenance testing techniques available for
transformers, cables and switchgear.
- This course will discuss interpretation of routine and maintenance testing results.
- This course will discuss the recommended industry practices of comprehensive preventive
maintenance scheduling to “prevent” failures of transformer, cables and switchgear.
- Who Should Attend?
Electrical engineers, technologists and technicians having high voltage background and involved in the installation, operation and maintenance of transformers, cables and switchgears.
COURSE OUTLINE
DAY 1
Introduction 8.30 am – 10.00 am
- Overview of field test requirements
- DC voltage testing techniques
- AC voltage testing techniques
Cable commissioning 10.15 am – 12.45 pm
- Installations Conditions
- Phasing test
- HI-POT tests
- Sheath integrity test
- “SOAK” test
Cable Testing of Service Aged Cable 2.00 pm – 5.30 pm
- Polarization Index test
- Power Factor Test
- Cable Fault Locating
- RECOMMENDED TESTING FREQUENCY
Several case studies will be presented, both industrial and utility based.
DAY 2
Transformer commissioning 8.30 am – 10.00 am
- Field Assembly and Vacuum Filling of Power Transformers
- Oil filtration
- Tap changers’ commissioning
- Commissioning of accessories - Protective Devices, Bushings, alarms & trips
Testing of Service Aged Transformer 10.15 am – 12.45 pm
Oil Analysis
- Oil quality Analysis
- Dissolved Gas Analysis
- Furan Compound Analysis
- RECOMMENDED TESTING FREQUENCY
Testing of Service Aged Transformer 2.00 pm – 5.30 pm
Electrical Testing
- Insulation Resistance and Polarization Index Tests
- Turns Ratio and Excitation Current Tests
- Capacitance and Tan Delta Tests
- Winding Resistance Test
- RECOMMENDED TESTING FREQUENCY
Several case studies will be presented, both industrial and utility based.
DAY 3
Switchgear commissioning 8.30 am – 10.00 am
- Metal Clad Switchgear construction and safety features
- Current Transformer tests
- Potential Transformer tests
- Metering and Relaying Devices tests
- Interlock tests
Testing of Service Aged Switchgear 10.15 am – 12.45 pm
- Mechanical Inspections
- Contact Resistance Tests
- Insulation Resistance Tests
- DC or AC high potential testing
- RECOMMENDED TESTING FREQUENCY
Testing of Service Aged Switchgear 2.00 pm – 5.00 pm
- Power factor or Dielectric loss test
- Insulating Gas Analysis
- Vacuum Integrity Test
- Time & Travel Analysis
- RECOMMENDED TESTING FREQUENCY
Several case studies will be presented, both industrial and utility based.
Course Outline for CBM for Underground Power Cables
- Introduction
Unscheduled outages have considerable economic impact on the operation of an electrical distribution network. With the increasing age of the population of underground cables it is of paramount importance to assess their internal condition while in service before catastrophic failures can take place. Today maintenance paradigm has changed from traditional calendar based to condition based and efforts are being channeled to explore techniques to monitor, diagnose and assess condition of underground cables. This has led to the development of various on- and off-line non-intrusive tests in recent years that allow diagnosing the integrity of underground cables to optimize the maintenance effort thereby ensuring maximum availability and reliability.
- Objective
This course is designed to enable participants to:
- Understand typical failure modes associated with underground cables and its accessories.
- Understand typically used on- and off- line diagnostic tests for condition monitoring ofvunderground cables.
- Understand the interrelationships of various on- and off- line diagnostic tests.
- Understand the interpretation of test results.
- Course Benefits
At the end of this course, the electrical power engineers will be equipped with a better understanding of what to do, when to do it and how to interpret the results from on- and off- line diagnostic tests on Cables. In effect, utilities may avoid expensive failures and unscheduled outages, and most importantly, personal injury.
- Who Should Attend?
This course is specially designed for Engineers and Technologists dealing with Operation, Maintenance & Testing of Cables.
COURSE OUTLINE
DAY 1
Introduction 8.30 am – 10.00 am
- Failure modes of cable and its accessories
- Failure modes, effects and criticality analysis (FMECA) of cables and its accessories
- FMECA Exercise
Break for refreshment 10.15 am – 10.30 am
Review of Basic tests 10.30 am – 1.00 pm
- Insulation Resistance (polarization index/ dielectric absorption ratio)
- Tan-delta (tip-up test)
- Sheath Integrity
- HVDC/HVAC/Pressure/Hi-pot
- Exercises
Break for lunch 1.00 pm – 2.00 pm
Partial Discharge 2.00 pm – 5.00 pm
- Concepts
- Application on Cables
- Typical circuitry for measurement
- Effect of Voltage Waveshapes on partial discharge measurement
- Partial discharge parameters for cable health diagnosis
- Exercises
Break for refreshment 3.00 pm – 3.15 pm
Several case studies will be presented, both industrial and utility based.
DAY 2
Dielectric Spectroscopy 8.30 am – 1.00 pm
- Concepts of moisture ingress in Cables
- Concepts – tan-delta measurement under frequency sweep
- Application on Cables
- Typical circuitry for measurement
- Parameters for water-tree measurement for XLPE Cables
- Parameters for moisture measurement for PILC Cables
- Exercises
Break for refreshment 10.15 am – 10.30 am
Break for lunch 1.00 pm – 2.00 pm
Hands-on Session 2.00 pm – 5.30 pm
- Hands on session on PD for Group 1
- Hands on session on DS for Group 2
Break for refreshment 3.00 pm – 3.15 pm
Practical demonstrations will be made.
DAY 3
Hands-on Session 8.30 am – 12.30 am
- Hands on session on PD for Group 2
- Hands on session on DS for Group 1
Break for refreshment 10.15 am – 10.30 am
Break for lunch 1.00 pm – 2.00 pm
Condition Assessment 2.00 pm – 5.00 pm
- Interpretation of test results of Partial Discharge & Dielectric Spectroscopy
- Interpretation of test results of Insulation Resistance & Tan-Delta
- Condition Health Index (CHI) Model
- CHI Exercises
Break for refreshment 3.00 pm – 3.15 pm
Several case studies will be presented, both industrial and utility based.
Practical demonstrations will be made.
Course Outline for CBM for Transformers
- Introduction
Unscheduled outages of power transformers have considerable economic impact on the operation of an electrical distribution network. With the increasing age of the population of power transformers it is of paramount importance to assess their internal condition while in service before catastrophic failures can take place. Today maintenance paradigm has changed from traditional calendar based to condition based and efforts are being channeled to explore techniques to monitor, diagnose and assess condition of power transformers. This has led to the development of various on- and off-line non-intrusive tests in recent years that allow diagnosing the integrity of power transformers to optimize the maintenance effort thereby ensuring maximum availability and reliability.
- Objective
This course is designed to enable participants to:
- Understand typical failure modes associated with Power Transformers.
- Understand typically used on- and off- line diagnostic tests for condition monitoring of Power Transformers.
- Understand the interrelationships of various on- and off- line diagnostic tests.
- Understand the interpretation of test results.
- Course Benefits
At the end of this course, the electrical power engineers will be equipped with a better understanding of what to do, when to do it and how to interpret the results from on- and off- line diagnostic tests on Power Transformers. In effect, industries may avoid expensive failures and unscheduled outages, and most importantly, personal injury.
- Who Should Attend?
This course is specially designed for Engineers and Technologists dealing with Operation, Maintenance & Testing of Power Transformers.
COURSE OUTLINE
DAY 1
Introduction 8.30 am – 10.00 am
- Failure modes of transformer and on-load tap changers
- Failure modes, effects and criticality analysis (FMECA) of transformer and on-load tap changers
- FMECA Exercise
Break for refreshment 10.00 am – 10.15 am
Review of Basic tests 10.15 am – 11.45 am
- Oil Tests, DGA, Furan
- TTR, WR, IR and Tan-delta
Partial Discharge 11.45 am – 1.00 pm
- Concepts
- Application on Transformers
Break for lunch 1.00 pm – 2.00 pm
Partial Discharge 2.00 pm –3.30 pm
- Typical circuitry for acoustic partial discharge measurement
- Partial discharge parameters for transformer health diagnosis
Break for refreshment 3.30 pm – 3.45 pm
Frequency Response Analysis 3.45 pm – 5.30 pm
- Concepts
- Typical circuitry for measurement
- Analyzing techniques
- Parameters for transformer health diagnosis
Several case studies will be presented, both industrial and utility based.
DAY 2
Motor Current Signature Analysis for on-load tap changer 8.30 am – 10.00 am
- Concepts
- Application on Transformers
- Typical circuitry for measurement
- Parameters for moisture content in oil and paper
Break for refreshment 10.00 am – 10.15 am
Dielectric Spectroscopy 10.15 am – 1.00 pm
- Concepts – tan-delta measurement under frequency sweep
- Application on Transformers
- Typical circuitry for measurement
- Parameters for moisture content in oil and paper
Break for lunch 1.00 pm – 2.00 pm
Hands-on Session 2.00 pm – 5.30 pm
- Hands on session on PD for Group 1
- Hands on session on FRA for Group 2
Break for refreshment 3.00 pm – 3.15 pm
Practical demonstrations will be made.
DAY 3
Hands-on Session 8.30 am – 12.30 am
- Hands on session on PD for Group 2
- Hands on session on FRA for Group 1
Break for refreshment 10.15 am – 10.30 am
Break for lunch 1.00 pm – 2.00 pm
Condition Assessment 2.00 pm – 5.00 pm
- Interpretation of test results of Partial Discharge, FRA & Dielectric Spectroscopy
- Interpretation of test results of Oil Tests, DGA, Furan, TTR, WR, IR and Tan-Delta
- Condition Health Index (CHI) Model
- CHI Exercises
Break for refreshment 3.00 pm – 3.15 pm
Several case studies will be presented, both industrial and utility based.
Practical demonstrations will be made.
Course Outline for CBM for Medium Voltage Switchgears
- Introduction
Unscheduled outages have considerable economic impact on the operation of an electrical distribution network. With the increasing age of the population of medium voltage switchgears it is of paramount importance to assess their internal condition while in service before catastrophic failures can take place. Today maintenance paradigm has changed from traditional calendar based to condition based and efforts are being channeled to explore techniques to monitor, diagnose and assess condition of switchgears. This has led to the development of various on- and off-line non-intrusive tests in recent years that allow diagnosing the integrity of switchgears to optimize the maintenance effort thereby ensuring maximum availability and reliability.
- Objective
This course is designed to enable participants to:
- Understand typical failure modes associated with switchgears and its accessories.
- Understand typically used on- and off- line diagnostic tests for condition monitoring of Switchgears.
- Understand the interrelationships between various on- and off- line diagnostic tests.
- Understand the interpretation of test results.
- Course Benefits
At the end of this course, the electrical power engineers will be equipped with a better understanding of what to do, when to do it and how to interpret the results from on- and off- line diagnostic tests on Switchgears. In effect, industries may avoid expensive failures and unscheduled outages, and most importantly, personal injury.
- Who Should Attend?
This course is specially designed for Engineers and Supervisors dealing with Operation, Maintenance & Testing of Switchgears.
COURSE OUTLINE
DAY 1
Introduction 8.30 am – 10.00 am
- Failure modes of switchgears and its accessories
- Failure modes, effects and criticality analysis (FMECA) of switchgears and its accessories
- FMECA Exercise
Break for refreshment 10.00 am – 10.15 am
Review of Basic tests 10.15 am – 1.00 pm
- Contact Resistance Test
- Insulation Resistance Test
- DC or AC Withstand Test
- Dielectric Dissipation Factor test
- Vacuum Integrity Test
Break for lunch 1.00 pm – 2.00 pm
Breaker Analyzer Test 2.00 pm – 5.30 pm
- On-line Breaker Analyzer Test
- Off-line Breaker Analyzer Test
- Off-line Breaker Analyzer Test - Travel
- Test Procedures
- Test Results
Break for refreshment 3.30 pm – 3.45 pm
Several case studies will be presented, both industrial and utility based.
DAY 2
SF6 Gas Monitoring 8.00 am – 10.00 am
- SF6 Dew Point and Purity Checks
- SF6 Gas Impurities
- SF6 Gas Testing
- Detection of Gas Leaks
- Frequency of Gas Checks
- SF6 Gas Replacement
Break for refreshment 10.00 am – 10.15 am
Partial Discharge Monitoring 10.15 am – 1.00 pm
- Partial Discharge Concepts
- Partial Discharge Sensors (Non-Ultrasonic)
- Partial Discharge Measurement (Non-Ultrasonic)
- Ultrasonic Partial Discharge Test
Break for lunch 1.00 pm – 2.00 pm
Hands-on Session 2.00 pm – 5.00 pm
- Hands on session on Breaker Analyzer Test
- Hands on session on Contact Resistance Test
- Hands on session on AC Withstand Test
Break for refreshment 3.30 pm – 3.45 pm
Practical demonstrations will be made.
Several case studies will be presented, both industrial and utility based.
DAY 3
Other Tests 8.00 am – 1.00 pm
- Dynamic Contact Resistance Test
- Infrared Thermoscanning
- CT Test
- PT Test
Break for refreshment 10.00 am – 10.15 am
Break for lunch 1.00 pm – 2.00 pm
Condition Assessment 2.00 pm – 5.00 pm
- Interpretation of Basic test results of Contact Resistance, Insulation Resistance, Dielectric Dissipation Factor test
- Interpretation of test results of Circuit Breaker Analyzer, Partial Discharge, Thermoscanning and Dynamic Contact Resistance
- Condition Health Index (CHI) Model
- CHI Exercises
Several case studies will be presented, both industrial and utility based. |
