15EE752 Testing and Commissioning of Power System Apparatus syllabus for EE

Electrical Tools, accessories:

Tools, Accessories and Instruments required for Installation, Maintenance and Repair Work, India Electricity Rules, Safely Codes Causes and Prevention of Accidents, Artificial Respiration, Workmen’s Safety Devices.

Transformers:

Installation, Location Site Selection, Foundation Details, Code of Practice for Terminal Plates, Polarity and Phase Sequence, Oil Tanks, Drying of Winding sand General Inspection. Commissioning Tests As Per National and International Standards - Volts Ratio Earth Resistance, Oil Strength, Insulation Tests, Impulse Tests Polarizing Index, Load Temperature Rise Tests. Specific Tests for Determination of Performance Curves like Efficiencies, Regulation Etc., Determination Mechanical Stress Under Normal and Abnormal Conditions.

Synchronous Machines:

Specifications as per BIS Standards. Installation - Physical Inspection, Foundation Details, Alignments, Excitation Systems, Cooling and Control Gear, Drying Out. Commissioning Tests - Insulation, Resistance Measurement of Armature and Field Windings, Wave Form and Telephone Interference Tests, Line Charging Capacitance. Performance Tests -Various Tests to Estimate the Performance of Generator Operations, Slip Test, Maximum Lagging Current, Maximum Reluctance Power Tests, Sudden Short Circuit Tests, Transient Sub Transient Parameters, Measurement of Sequence Impedances, Capacitive Reactance, and Separation Of Losses, Temperature Rise Test, and Retardation Tests. Factory Tests -Gap Length, Magnetic Eccentricity, Balancing Vibrations, Bearing Performance.

Induction Motor:

Specifications. Installation- Location of Motors and its Control Apparatus, Shaft Alignment for Various Coupling, Fitting of Pulleys and Coupling, Drying of Windings. Commissioning Tests -Mechanical Tests For Alignment, Air Gap Symmetry, Tests for Bearings, Vibrations and Balancing. Specific Tests -Performance and Temperature Raise Tests, Stray Load Losses, Shaft Alignment, Re-Writing and Special Duty Capability, Site Test

Laying of Underground Cables:

Inspection, Storage, Transportation and Handling of Cables, Cable Handing Equipment, Cable Laying Depths and Clearances from other Services such as Water Sewerage, Gas, Heating and other Mains, Series of Power and Telecommunication Cables and Coordination with these Services, Excavation of Trenches, Cable Jointing and Terminations Testing and Commissioning. Location of Faults using Megger, Effect of Open or Loose Neutral Connections, Provision of Proper Fuses on Service Lines and Their Effect on System, Causes and Dim, and Flickering Lights

Switchgear and Protective Devices:

Standards, Types, Specification, Installation, Commissioning Tests, Maintenance Schedule, Type and Routine Tests.

Domestic Installation:

Introduction, Testing of Electrical Installation of a Building, Testing of Insulation Resistance to Earth, Testing of Insulation and Resistance between Conductors Continuity or Open Circuit Test, Short Circuit Test, Testing of Earthing Continuity, Location of Faults, IE Rules for Domestic Installation

Course outcomes:

At the end of the course the student will be able to:

• Describe the process to plan, control and implement commissioning of electrical equipment’s.
• Differentiate the performance specifications of transformer and induction motor.
• Demonstrate the routine tests for synchronous machine, induction motor, transformer & switchgears.
• Describe corrective and preventive maintenance of electrical equipment’s.
• Explain the operation of an electrical equipment’s such as isolators, circuit breakers, induction motor and synchronous machines.

Graduate Attributes (As per NBA)

Engineering Knowledge, Problem Analysis, Conduct investigations of complex problems, Modern Tool Usage, Ethics, Individual and Team Work, Communication, Life-long Learning.

Question paper pattern:

• The question paper will have ten questions.
• Each full question is for 16 marks.
• There will be 2full questions (with a maximum of four sub questions in one full question) from each module.
• Each full question with sub questions will cover the contents under a module.
• Students will have to answer 5 full questions, selecting one full question from each module.

Text/ Reference Books

1 Testing, Commissioning, Operation and Maintenance of Electrical Equipment S. Rao Khanna Publishers 6 th Edition, 19th Reprint, 2015

2 Testing and Commissioning of Electrical Equipment R.L.Chakrasali Prism Books Pvt Ltd 1 st Edition,2014

3 Preventive Maintenance of Electrical Apparatus S.K.Sharotri Katson Publishing House 1st Edition, 1980

4 Handbook of Switchgears BHEL McGraw Hill 1 st Edition, 2005

5 Transformers BHEL McGraw Hill 1 st Edition, 2003

6 The J&P Transformer Book Martin J. Heathcote Newnes 12th Edition, 1998