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1.
FUNDAMENTALS
·
Concept of resistance, inductance, capacitance and their role in
electric circuits.
·
Series and parallel connection of resistance, inductance and
capacitance.
·
Ohm’s law and Kirchhoff’s law.
·
Alternating current fundamentals: Faraday’s laws of electromagnetic
induction, generation of alternating voltages and currents and their equations
and waveforms, amplitude, frequency, phase, phase difference, average and rms
values, A.C. through resistance, inductance, capacitance and through their
combinations, single phase and three phase AC systems.
·
Heating effect of electric current
·
General norms of system voltage regulation and frequency regulation.
2.
POWER PLANTS
·
Hydroelectric power plants: Merits and demerits, classifications and
respective layouts, selection of sites, types of water turbines, their working
principles and applications.
·
Diesel electric power plants: Merits and demerits, selection of sites,
elements of a diesel plant and its layout.
·
Non conventional power generation: Photo voltaic or solar cells, solar
power generation, wind power generation.
3.
ELECTRICAL
MACHINES
·
D.C. generators: Working principle, types of D.C. generators, external,
internal and no load characteristics, losses and efficiency.
·
D.C. motors: Working principle, types of D.C. motors, characteristics
of D.C. series and shunt motors, losses and efficiency
·
Synchronous generator: Working principle, equation of induced E.M.F.,
short circuit and open circuit characteristics, voltage regulation, losses and
efficiency, parallel operation and synchronizing, Alternators connected to
infinite bus bars, different types of excitation systems, drying of
alternators.
·
Three phase induction motors: Working principle, squirrel cage and slip
ring motors, characteristic of induction motors, starting torque ant torque
under running condition, starting of induction motors.
·
Transformers: Working principle, E.M.F. equation, transformer at no
load and at loaded condition, losses and efficiency, parallel operation,
different components of transformers, transformer oil and its role, cooling of
transformers, Bucholtz protection.
·
Prerequisites for starting of generators in hydro and diesel station.
·
Necessity of cooling in power stations
·
Role of auxiliary equipments in power stations, storage batteries,
their capacities, charging and maintenance.
·
Concept of black start units in power stations.
4.
CONTROL AND
PROTECTION
·
Necessity of D.C. system in power stations.
·
Working principle of bulk oil, vacuum, minimum oil and gas filled
circuit breakers.
·
Working principle of over current, earth fault and under voltage relays
and their importance for protection of the system.
·
Instrument transformers and their role in system protection.
·
Power line carrier communication and its importance.
·
Surge arrestor and its importance in protection against lightening.
5.
SUB-STATION
AND TRANSMISSION LINE
·
Substations: Substation equipments and their functions, general layout
of substation, types of bus bar arrangements, earthing of equipments in a
substation.
·
Transmission lines: General concept of overhead transmission line and
under ground cabling, necessity of high voltage transmission, line parameter,
resistance, inductance and capacitance, choice of voltage level, conductor spacing, voltage
regulation and efficiency of short and medium transmission lines, sag, tension
and clearances, supports and cross arms, insulating materials and their
classification, conducting materials, vibrations and dampers in transmission
lines..
·
Lightening phenomenon, types and functions of lightening arrestor, over
head earth wire.
·
Corona and its effects, advantages
and disadvantages.
6.
DISTRIBUTION
AND CONSUMER SERVICES
·
Primary distribution system: Radial system, ring main system and
interconnected network system
·
Secondary distribution system: Three phase four wire distribution,
single phase two wire distribution
·
Voltage regulation
·
Selection of supports and conductors in secondary distribution system
·
Earthing of electrical system and equipment
·
Consumer supply connection
·
General idea of fuse, MCB and MCCB protection
·
Consumer supply energy meters: Construction and principle of operation,
creeping errors and their compensation, testing of energy meters
7.
POWER SYSTEM
OPERATION AND MAINTENANCE
·
Concept of maximum demand, diversity factor, load factor and load
curves, load duration curves, power factor correction and improvement
·
Operation of substation during
normal and abnormal condition
·
Synchronizing and system restoration
·
Preventive maintenance in electrical system for transmission lines and
its equipment, distribution lines and its equipments, transformers,
switchgears, motors, generators, turbines excitation system, and communication system used in power system
·
Maintenance of D.C. system
·
Safety and precautions, safety rules and regulation, safety tools and
devices.
8.
INSTITUTIONAL
KNOW-HOW
·
General knowledge of Nepal Electricity Authority, its organizational
structure and function of various business groups
·
General knowledge of various
power plants of Nepal,
their types, salient features, and their
geographical locations
·
General knowledge on Nepalese power transmission system, voltage levels
and lengths, export-import links for power exchange with India.
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