E5 High Voltage and Insulation Engineering
E5 201 (AUG) 2:1
High Voltage Engineering
Introduction to insulation systems used in high voltage power
apparatus: gaseous, vacuum, liquid, solid and composite insulation, performance
of insulation under electric stress, high voltage dielectric tests – generation
and measurement of high ac, dc and impulse voltages in test laboratories,
generation and measurement of impulse current, digital techniques in HV
measurements, calibration of HV measuring instruments and traceability of HV
measurements, dry and wet tests, pollution test, RIV, corona and voltage
distribution tests on insulators and line hardwares, composite stress testing,
high current tests on surge arresters, nondestructive insulation diagnostics
and condition monitoring of high voltage equipments – measurement of insulation
resistance, dielectric response analysis, PDC, recovery voltage, capacitance
and tan , partial discharges, treeing and tracking, SFRA and DGA, introduction
to relevant national and international standards, layout and clearances as well
as shielding and grounding of HV lab, safety regulations for high voltage
tests. Laboratory experiments on the above topics.
M Joy Thomas
Kuffel, E., Zaengl, W.S., and Kuffel, J., High Voltage Engineering
Fundamentals, Butterworth-Heineman Press,
Current literature from journals and conference proceeding.
E5 205 (AUG) 3:0
Physics of Dielectrics
Dielectric formalism, equivalent circuits, intrinsic dielectric
strength, mechanisms of electrical and thermal breakdown in solids, dielectric
relaxation in condensed matter.
T
Bottcher, C.J.F., Theory of Electric Polarisation, Elsevier
Publication, 1962.
Whitehead, S., Dielectric Breakdown of solids, Oxford Univ. Press,
Clarendon. 1953.
E5 206 (JAN) 3:0
HV Power Apparatus
HV power transformers, equivalent circuit, surge phenomenon, standing
and traveling wave theory, ladder network representation, short circuit forces,
impulse testing, diagnostics and condition monitoring of transformers, natural
frequencies and its measurement, modern techniques. Introduction to HV
switching devices, electric arcs, short circuit currents, TRV, CB types, air,
oil and SF6 CB, short circuit testing.
Udaya Kumar, L Satish and B
Bernard Hochart, Power Transformer Handbook, Butterworth, 1987.
The J & P Transformer Book, 12th Edn, M J Heathcote, Newnes, 1998.
Transformers, Bharat Heavy Electricals Limited, Tata McGraw Hill, 2001.
Blume, L.F., and Boya Jian, Transformer Engineering, John Wiley and
Sons, 1951.
Garzon, R.D., HV Circuit Breakers – Design and Applications, Marcel and
Flurscheim, C.H., Power Circuit Breaker: Theory and Design, Peter
Peregrinus Ltd., 1975.
Ryan, H.M., and Jones G.R., SF6 Circuit Breaker, Peter Peregrinus Ltd.,
1989.
E5 208 (JAN) 3:0
Stochastic Processes in Electrical Insulation
Phenomenological theory of ageing, mechanisms of ageing under
electrical, thermal and combined stresses, accelerated ageing tests,
statistical models for insulation failure, ageing data analysis, ageing and
failure due to partial discharges, ageing in multi component insulation
systems.
T
Pre-requisite E5 222
Mann, N.R., Scholar, R.E., and
Hohn, G.J., and Shapira, S.S., Statistical Models in Engineering, John
Wiley and Sons, NY, 1967.
E5 209 (JAN) 3:0
Over voltages in Power Systems
Transient phenomena on transmission lines, methods of analysis and
calculation, use of PSPICE, principle of
EMTP lightning discharges, origin and characteristics of lightning and
switching overvoltages, behaviour of apparatus and line insulation under
overvoltages, Protection of Apparatus against Overvoltages, Surge arresters, VFTO
in GIS, insulation co-ordination.
L Satish
Ragaller, K. (ed.), Surges in High Voltage Networks, Plenum Press, 1980.
Transmission Line Reference Book, 345 kV and above EPRI, 1984.
E5 210 (JAN) 2:1
High Voltage Testing Techniques
Need for diagnostics and condition monitoring,
on-line/on-site testing, diagnostic tools. Transformer impulse test, neutral
current method, digital techniques, data acquisition, principles and problems,
TF and CF method, winding structure, natural frequencies, newer methods of
fault identification and diagnostics PD measurement, background, analysis,
calibration, digital PD measurement, PD as a diagnostic tool, PD signal, noise
reduction methods, PD pattern, fault discrimination, and insulation
degradation. E
LAB: Measurement of capacitance and dissipation factor, transformer
ratio at high voltages, RIV, impulse flashover of line insulation, use of RSG,
sweep frequency response of transformers, LVI testing method, signal generation
using arbitrary waveform generators, partial discharge measurement, DGA.
L Satish and B Subba Reddy
Recent Journal Publications
E5 212 (JAN) 3:0
Computational Methods for Electrostatics
Laplace’s and Poisson’s equations in insulation design, transient
fields due to finite conductivity, method of images, images in two-layer soil,
numerical methods, finite difference, finite element and charge simulation
methods tutorials and demonstration on PC, programming assignments.
Udaya Kumar
Numerical Techniques in Electromagnetic, Second Edn, M.N.O. sadiku, CRC Press.
Weber, E., Electromagnetic Fields,
Silvester, P.P. and Ferrari, R.L., Finite Elements for Electrical
Engineers,
Selected journal papers
E5 213 (JAN) 3:0
EHV/UHV Power Transmission Engineering
Electrical power transmission by HVAC and HVDC, overhead transmission
lines, bundled conductors, mechanical vibration of conductors, surface voltage
gradient on conductors, corona and associated power loss, radio-noise and
audio-noise and their measurement, fields under transmission lines, overhead
line insulators, insulator performance in polluted environment, EHV cable
transmission – underground cables and GIL, high voltage substations – AIS and
GIS, grounding of towers and substations, over voltages in power systems,
temporary, lightning and switching over voltages, design of line insulation for
power frequency voltage, lightning and switching over voltages, insulation
co-ordination.
M Joy Thomas
Begamudre, R.D., Extra High Voltage AC Transmission Engineering, Wiley
Eastern Limited, 1990.
Transmission line Reference Book 345 kV & above, Electrical Power
Research Institute, (EPRI),
E5 214 (AUG) 2:0
HV applications for Air Pollution Control
Fundamentals: Non-thermal gas discharges at atmospheric pressure,
corona discharges, chemical activity of plasma, power sources, hybrid plasma
reactors and associated measurements. Applications: combined removal of dust,
SO2 and NOx in flue
gases, removal of VOCs, ozone generation, cleaning of exhaust gases, gas
temperature effects on plasma chemical reactions and automobile exhaust
cleaning.
B
Lucian Dascalescu, An Introduction to Ionized Gases: Theory and
Applications, 1993.
Journal Publications
E5 215 (AUG) 2:0
Pulsed Power Engineering
Overview of pulsed power engineering, pulsed power generators, PFN
schemes, Marx circuits, magnetic pulse compression, FCG, explosively driven
FCGs, homopolar generators, power conditioning systems, measurement techniques
of pulsed power parameters, insulation requirements for pulsed power systems –
gaseous, liquid, solid and magnetic insulation and their behaviour under pulsed
voltages, applications of pulsed power systems, pulsed power systems for high
power lasers, HPM, UWB, IRA, railgun, ETC NEMP and ESD simulators, pulsed power
systems for biological and pollution control applications.
M Joy Thomas
Advances in Pulsed Power Technology, Vol. 1 & 2, Plenum Press, NY,
1987and1990.
E5 253 (AUG) 2:1
Nanodielectrics
Introduction to polymers, polymer structure and morphology,
classification of polymers, polymer characterisation, polymers as dielectrics
in various electrical equipment, dielectrics in electric field, polarization,
relaxation, permittivity and dielectric loss, space charge in dielectrics and
its measurement, dielectric spectroscopy in time and frequency domain, filled
polymers for HV applications. Introduction to nanomaterials, polymer
nanocomposites, processing of nanocomposites, dispersion of nanofillers in
polymer matrix, influence of nanofillers on dielectric properties, interfacial
phenomena, electrical degradation – treeing, partial discharge, tracking &
erosion and breakdown, stochastic models of breakdown, multistress ageing,
nanodielectrics for specific HV applications, nanofluids, computational
dielectrics.
Laboratory experiments on the above topics.
M Joy Thomas
Ku, C.C., and Liepins, R., Electrical Properties of Polymers, Hanser
Publishers,
Jonscher, A.K., Dielectric Relaxation in Solids,
Special Issue on Nanodielectrics, IEEE Trans. on Dielectrics and
Electrical Insulation, Vol. 15, No. 1, Feb 2008.