Unit 1 Advanced Maintenance and Condition Monitoring

4 lecture hours

• Importance and necessity of maintenance
• different maintenance strategies like Breakdown maintenance
• planned maintenance and condition-based maintenance
• Planned and preventive maintenance of transformer
• induction motor and alternators
• Insulation stressing factors
• insulation deterioration
• polarization index
• dielectric absorption ratio
• Insulation ageing mechanisms
• Insulation failure modes
• Definition of terms
• Overview of Advanced tools and techniques (AI & IOT) of condition monitoring
• Variety of sensors for Current
• Voltage etc parametric monitoring for direct signature analysis for given network condition & equipment health

Unit 2 Transformer Diagnostics Technique (Part-1)

4 lecture hours

• Transformer failure pattern and failure analysis
• Aging of electrical Power infrastructure
• Diagnostic method
• Transformer oil paper insulation system
• Remaining life analysis (Statistical Techniques)
• Robotic unit for direct immersion in transformer tanks for high resolution imaging and integrated condition assessment without draining transformer oil 4 10 Conventional tests
• Dissolved Gas Analysis
• Gas Evolution in a Transformer
• Key Gas method
• IEEE Method
• Gas Ratio Method
• Fault Detectability using DGA, Combine Criteria for DGA 4 10 Degree of Polymerization and Furan Analysis
• Moisture analysis in Transformer Oil, Time domain Dielectric Response Methods
• Polarization and depolarization current measurements
• Frequency Domain Dielectric Frequency Response (DFR) Method
• Introduction and Basic Philosophy
• Advantages and Disadvantages of DFR measurement in Time and Frequency domain

Unit 3 Transformer Diagnostics Technique (Part-2)

• Partial Discharge measurements
• PD Measuring circuits
• signature analysis
• Indirect electrical measurement
• UHF sensor and HF CT, Measurement of PD under DC, Acoustic Technique
• Overview of Acoustic Technique

Unit 4 Detection of Winding Displacements, Sweep Frequency Response

4 lecture hours

• Basic features of SFRA response
• connection methods
• Transfer function features
• FRA Test Types
• Basics of FRA interpretation
• Influence of winding parameters on FRA, Online FRA measurement 4 OLTC and Bushing diagnostics
• Life Assessment and Refurbishment 2 Program Name: Master of Engineering Level: PG Subject Code: ME02000801 Subject Name: Condition Monitoring and Prognosis of Electrical Equipment 4
• Condition Monitoring of Rotating Electrical Machines Introduction to motor condition monitoring
• The need for monitoring
• What and when to monitor
• operation and failure modes of electrical machines
• Structure of electrical machines and their types
• Machine specification and failure modes
• Failure sequence and effect on monitoring
• Typical root causes and failure modes
• Root causes
• Failure modes

Unit 5 Temperature monitoring

6 lecture hours

• Instrumentation requirement for Temperature measurement
• Local temperature measurement
• Hot-spot measurement and thermal images
• Bulk measurement Chemical monitoring Insulation degradation
• Factors that affect detection
• Insulation degradation detection
• Particulate detection: core monitors
• Particulate detection: chemical analysis
• Gas analysis off-line
• Gas analysis on-line
• Lubrication oil and bearing degradation
• Motor Current Signature Analysis Identifying methods of Mechanical Faults with Motor Current Signature Analysis (MCSA)
• faults that can beDetected with MCSA: Air-Gap Eccentricity
• Broken Rotor Bars
• Bearings Damage
• Shorted Turns in Stator Windings, etc
• Vibration monitoring Instrument required for Vibration measurement
• Condition monitoring of rotating elements
• Bearing response
• Rolling element bearings
• bearing geography
• Bearing Monitoring techniques
• Overall level monitoring
• Frequency spectrum monitoring
• Sensors for foundation tilt
• drive shaft twisting etc. monitoring

Unit 6 Condition monitoring and diagnostics of electrical circuit breakers

6 lecture hours

• Contact Resistance Measurement
• Timing Analysis
• Dynamic Resistance Measurement (DRM)
• Partial Discharge (PD) Testing
• Gas Analysis for SF₆ Circuit Breakers
• Vibration Analysis
• Thermal Imaging
• Insulation Resistance Testing
• Circuit Breaker Analyzer
• Acoustic Emission Testing
• Trip Coil Current Analysis
• Mechanical Travel Analysis
• travel curve including position
• angular & linear sensors for kinematic chain health/ twist monitoring
• self-powered wireless sensors for contact temperature monitoring
• micro motion pulses for overall electrical circuit health without creating breaker operation Program Name: Master of Engineering Level: PG Subject Code: ME02000801 Subject Name: Condition Monitoring and Prognosis of Electrical Equipment