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KHUDKIBOOK
HIGH VOLTAGE ENGINEERING
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2160904
Code: 2160904
Credits: 5
Semester 6
Electrical Engineering
High Voltage Engineering
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GTU Previous Year Papers
High Voltage Engineering Syllabus — Unit-wise Content
The official GTU curriculum for High Voltage Engineering (subject code 2160904) as prescribed for Electrical Engineering · Semester 6 divides the course into 8 units, covering 95 listed topics. The unit-wise breakdown below is read from the GTU syllabus document for this subject code, so you can check what the course actually covers before deciding which papers to attempt.
Download the official syllabus PDF (2160904)Unit 1 Electrostatic fields and field stress control
- Electrical field distribution and breakdown strength of insulating materials - fields in homogeneous
- isotropic materials - fields in multi-dielectric
- isotropic materials - numerical method: Finite Element Method (FEM)
- charge simulation method (CSM)
Unit 2 Electrical breakdown in gases
- Gases as insulating media - ionization and decay processes
- Townsend first ionization coefficient
- ionization by interaction of metastable with atoms
- thermal ionization
- deionization by recombination
- deionization by attachment–negative ion formation
- examples - cathode processes – secondary effects
- photoelectric emission
- electron emission by positive ion and excited atom impact
- thermionic emission
- field emission
- Townsend second ionization coefficient
- secondary electron emission by photon impact
- examples - transition from non-self-sustained discharges to breakdown
- the Townsend mechanism
- examples - the streamer or ‘kanal’ mechanism of spark
- examples - the sparking voltage–Paschen’s law, penning effect
- the breakdown field strength
- breakdown in non-uniform fields- partial breakdown
- corona discharges
Unit 3 Breakdown in liquid and solid dielectrics
- Liquid as insulators
- breakdown in liquids - electronic breakdown
- suspended solid particle mechanism
- cavity breakdown
- examples - static electrification in power transformers
- transformer oil filtration
- transformer oil test
- alternative liquid insulations like vegetable oils
- esters and silicon oils - breakdown in solids
- intrinsic breakdown
- streamer breakdown
- electromechanical breakdown
- edge breakdown and treeing
- thermal breakdown
- erosion breakdown
- tracking - Note: 1. 10%-20% weightage should be given to the Examples and Short/Multiple choice questions. 2
- The institutes which does not have proper High Voltage Laboratory are advised to visit nearby High Voltage laboratory breakdown of solid dielectrics in practice
- partial discharges in solid insulation
- solid dielectrics used in practice
Unit 4 Generation of high voltages
- Generation of high direct voltages
- half and full wave rectifier circuits
- voltage multiplier circuits
- Van de Graff generators
- electrostatic generators
- examples - generation of alternating voltages
- testing transformers
- cascaded transformers
- resonant transformers
- examples - impulse voltages
- Standard lightning and switching surge and associated parameters and their corrections
- impulse voltage generator circuits
- Marx circuit
- design and construction of impulse generators
- examples - impulse current generator - control systems
Unit 5 Measurement of high voltages
- High direct voltage measurement
- peak voltage measurements by spark gaps
- sphere gaps
- reference measuring systems
- uniform field gaps
- rod gaps
- factors affecting sphere gap measurements
- examples - electrostatic voltmeters - ammeter in series with high ohmic resistors and high ohmic resistor voltage dividers - generating voltmeters and field sensors - the measurement of peak voltages
- the Chubb–Fortescue method
- high- voltage capacitors for measuring circuits - voltage dividing systems and impulse voltage measurements
- digital recorders
- errors inherent in digital recorders
Unit 6 Over voltages, testing procedures and insulation coordination
- The lightning mechanism
- energy in lightning
- nature of danger - laboratory high-voltage testing procedures and statistical treatment of results
- examples - insulation coordination
- insulation level
- statistical approach to insulation coordination
- correlation between insulation and protection levels - modern power systems protection devices
- M O A – metal oxide arresters
Unit 7 Non-destructive insulation test techniques
- Measurement of d.c. resistivity - dielectric loss and capacitance measurements
- the Schering bridge
- current comparator bridges
- Tan Delta measurement
- null detectors - partial-discharge (PD) measurements
- the basic PD test circuit
- PD currents
- PD measuring systems within the PD test circuit
- measuring systems for apparent charge
- sources and reduction of disturbances
- other PD quantities
- calibration of PD detectors in a complete test circuit
- digital PD instruments
Unit 8 High voltage testing
- Testing of insulators and bushings
- testing of isolators and circuit breakers Testing of cables
- testing of transformers - testing of surge diverters - radio interference measurements - design
- planning and layout of high voltage laboratory
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