Here is the list
1. Synchronizing and Protection relay for net metering applications of Solar Panels.
Eng. WDAS Wijayapala Dr. J.P. Karunadasa
Electricity Authorities of Sri Lanka have allowed net metering of electricity and under this
scheme electricity users are allowed to generate electricity using renewable resources and supply
to the grid. Their monthly electricity bill will be the net of the usage and what is supplied
through generation. If they have supplied extra electricity to the grid, they can use them later.
Design and production of a synchronizing relay with protection features required for
interconnecting solar panels is the objective of this project.
3. Improvement of reliability of micro hydro electricity generation plants with special
emphasis on analyzing the causes for the failure of capacitors, proposing remedial action
and implementing the proposal in a micro-hydro facility.
Eng. J. Karunanayake and Dr. Udayanga Hemapala
It is the accepted practice in Sri Lanka and elsewhere in the world to use induction generators for
electricity generation in micro hydro plants. Basically the induction generator comprise of a
squirrel cage induction motor with its excitation provided through capacitors. These generators
can be single phase as well as three phase units. Micro hydro plants generally have no governor
control due to economic reasons and generation/demand balance is achieved by activating a
dummy load through a device known as Induction Generator Controller (IGC), a power
Micro hydro developers have been experiencing explosion/burning of the capacitors frequently
and such failures not only lowers the reliability but increases operational costs as well. At times,
these failures have even lead to major fires causing extensive damages to the installation. There
are more than 300 micro-hydro plants in Sri Lanka and this problem is common to most of the
stations, if not for all.
With the studies carried out under this project it is proposed to
1. Ascertain the reasons for the failure of the capacitors
Propose suitable measures to overcome such shortcomings
3. Implement the proposed solution in a micro-hydro facility
4. Observe the performance and prove that the cause/s for the failure have been overcome
5. Propose any other efficiency/reliability improvements or cost saving measures
6. Prepare a cost benefit analysis on the improvements proposed
University will arrange a micro-hydro facility to collect all necessary information, carry out all
necessary measurements and to try out the solution.
6. Three-phase full-parameter AC electricity acquisition module.
Dr. Chandima Pathirana
This project aims to propose a module which can to provide the following
parameters in relation with the three phase electricity.
The true effective value of current and voltage, power factor, active power,
reactive power, frequency, input active electrical degree, output active electrical degree,
main electrical degree, reactive electrical degree, apparent power, main apparent power
are the parameters .
8. To design and build a “Power System Simulator”
Eng. J. Karunanayake and Prof. Lucus
The “Power System Simulator” is basically a model of a real life power system. It comprise of
generators, generator transformers, transmission lines, grid substations, distribution lines,
inductors, capacitors, circuit breakers, current transformers, voltage transformers, protection
relays and metering facilities. Such a model power system will be extremely useful to understand
the behaviour of the power system or individual components under all conditions, whether
abnormal or normal. A brief description of each of the above items to be used in the model is
Generators will be synchronous generators driven by prime movers, which can be induction or
DC motors. Prime mover. In case of induction motors variable speed drives could be used to
vary the speed. Voltage regulation will be both manual and automatic.
Output of the generators will be connected to the busbars through the generator transformers.
Generator transformer usually will step up the generating voltages to a higher voltage for
transmission. However in the model, the transmission voltage will be of 110 Volts to ensure
Transmission lines will be modeled using inductors, resistors and capacitors. Typical
transmission line parameters will be used. Facilities will be made available to create different
kinds of faults on the line at different places.
Typically GSS will comprise of two stepping down transformers and MV feeders.
CIRCUIT BREAKERS, PROTECTION RELAYS, CTS AND PTS
Air circuit breakers will be used as circuit breakers. Protection relays to be used will be distance
relays, OCEF relays and possibly transformer differential and generator protection relays of
reputed manufacturers. These will be fed from the CTs and PTs through test plugs. Protection
relays available in the lab could be used in the model.
All protection relays will be connected using a communication cable or otherwise to download
all information stored in the relays from one port. These will include all current/voltage
waveforms, relay operation records, CB opening/closing information etc. Facility will be
available to download the information from relays individually as well. In addition remote
closing/opening of circuit breakers will be facilitated using the same.
Preliminary Planning of the system to be modeled,
- Whether the model should have all facilities as proposed above or less or more.
- Plan out the project, decide on the stages/modules and timings
- Identify the problems that may encounter, space, funds, material, workman inputs
Model the proposed system with PSCAD or any other software
- ascertain the typical values for various impedances, generator/transformer ratings, loads
- carryout a fault study ( symmetrical and unsymmetrical) and a load flow study
- analyze whether currents and voltages will be sufficient to operate the protection relays
- determine the appropriate component values, KVA ratings for the generators,
- Identify the components/items to be procured
Carry out the final design
- Determine the physical dimensions of the model
- Decide on the items required other than the electrical components for building the model.
- Prepare the wiring diagrams
- Prepare a cost estimate
Building the Model
- Construction and installation
- Wiring checks
- Commissioning tests
12. Development of a synchronized energy monitoring device for energy theft detection.
Co-supervisor: Mrs. Upuli Jayatunga
13. Development of a high impedance fault detection system in low voltage distribution
Co-supervisor: Mrs. Upuli Jayatunga
These are the hottest ever and i wish with all my luck to be get one of these.