Admissions

High Voltage -The Power to Transform Your World

The High Voltage Engineering Laboratory (HVE Lab) is a state-of-the-art facility dedicated to the study of high voltage phenomena and the development of high voltage technologies. The lab is equipped with a variety of high voltage generating and measuring equipment, and testing facilities. These test facilities are now vitally used for undergraduate and postgraduate research activities and laboratory experiments, for consultancy services for industry, i.e. CEB, LTL PLC, and for demonstrations for regular visitors.

The HVE Lab is used by students and researchers from the Electrical and Electronic Engineering Department to conduct experiments on a variety of topics and further as a resourceful team, we are capable of dealing with problems related to electrical insulation in high voltage apparatus and would like to render our Engineering services to outside institutions and industries.

HVLab
 
 

SOFTWARE, EQUIPMENT AND EXPERIMENTAL SETUPS  

 

Below, you will find pictures of laboratory setups, equipment, etc., belonging to the High Voltage Engineering laboratory.

TEST FACILITIES

Impulse generator (HAEFELY)

  

AC Generator

(TOKYO Transformers)
Impulse Generator
  • - 400 kV, 20kJ, 4-stage Marx impulse generator with control panel, transient recorders and voltage divider
  • - Used for impulse testing on HV apparatus
  • - Used for educational and research activities of the department
  • - Frequently used for insulator tests for CEB and transformer tests for LTL Pvt Ltd
 AC Generator AC Generator
  • - 60 kV, 20 kVA, AC generator with regulating transformer and voltmeters and ammeters
  • - Used for flashover tests on HV apparatus
  • - Used for educational and research activities of the department
 

AC Generator II (NGK)

AC Generator III (PHENIX)
AC Generator II AC Generator II AC Generator III AC Generator III
  • - 60 kV, 30 kVA, AC generator
  • - With regulating transformer, voltmeters and ammeters
  • - Used for flashover tests on HV apparatus 
  • - Used for pollution test on high voltage insulators
  • - 100 kV, AC generator
  • - With regulating transformer, voltmeters and ammeters
  • - Used for flashover tests on HV apparatus
  • - Used for educational and research activities
 
Surge Generator (HAEFELY) Partial Discharge Detector (TETTEX)
Surge Generator
  • - 20 kV Surge generator
  • - Purchased under University INRC grants
  • - Used for testing power and communication equipment with lightning induced voltages
 Partial discharge detector
  • - With standard capacitor 100 pF and calibration kit
  • - Purchased under Sida/Sarec program
  • - Used for partial discharge measurements (PD level, current etc.)

 

Insulation Diagnostic System (IDA200)

 

Electrometer (KEITHLEY)
IDA200
  • - 0.1mHz to 1 kHz, 1 kV Dielectric spectrometers
  • - Purchased under Sida/Sarec program
  • - Used for measuring loss tangent and capacitance within a broad range of frequencies 0.1 mHz to 1 kHz on high voltage insulation such as transformers, cables, bushings, etc.
 Electrometer
  • - Purchased under Sida/Sarec program
  • - Used for precise current, voltage measurements, including measurements of polarization, depolarization currents

 

Karl Fischer Titrator and Oil Test Cell (Metrohm)

 

Digital oscilloscope (Agilent Technologies)
Karl Fischer Titrator
  • - Purchased under University INRC grants
  • - Used for educational and research activities
 Digital Oscilloscope
  • - Four channels, 500 MHz, digital oscilloscope
  • - Purchased under University INRC grants
  • - Can be used for recording impulse voltage and current waveforms

 

Laboratory Oven I (Gemmy Industrial Co.)

 

Laboratory Oven I (Binder)
Oven
  • - Dimensions 47cm x 43cm x 60cm, volume 40 L temperature Ambient + 5ºC to 250ºC
  • - Purchased under University research grants
  • - Can be used for aging tests of material samples
 Oven 2
  • - Dimensions 74cm x 67cm x 90cm, volume 115 L temperature Ambient + 15ºC to 200ºC
  • - Purchased under University research grants
  • - Can be used for aging tests of material samples

 

Oil Extractor

 

Partial Discharge Detector (TETTEX)
Oil Extractor
  • - Purchased under University research grants
  • - Can be used for extracting oils from seeds i.e. sesame, castor, coconut
  • - Used for educational and research activities of the department
 Model Distribution Substation
  • - Model distribution substation including, 100 kV, 33/0.4 kV transformer with DDLOs, surge arrestors, 33 kV and 400 V lines and two poles
  • - Installed by CEB
  • - Can be used for demonstrations and measurements

 

 
 

RESEARCH, SERVICES AND TESTS  

 

From the past recent years, we have been closely working with High Voltage Laboratories of foreign universities such as Royal Institute of Technology, Chalmers University of Technology, Uppsala University, Sweden. The Manchester University, UK, and Queensland University, Australia. Further we have been working with local industries i.e. Ceylon Electricity Board and Lanka Transformers Pvt Ltd.

 
SOME OF THE RESEARCH ACTIVITIES
  • -> Composite Insulator Performance.
  • -> Leakage Current Patterns on Insulators.
  • -> Transformer Condition Assessment.
  • -> Power Transformer Insulation.
  • -> Generator Condition Assessment.
  • -> Generator Stator Insulation.
  • -> Alternative Insulation.
  • -> Lightning Related Issues.
 
 
SERVICES
  • -> Engaging research activities directly related to the problems in Sri Lankan power system in collaboration with local industry like CEB.
  • -> Testing of HV apparatus of the industry.
  • -> Providing the HV Laboratory facility to other institutions for research activities.
  • -> Design works.
 
 
COMMON HIGH-VOLTAGE TESTS
  • -> HV insulator tests for CEB dry and wet flashover test, impulse test, mechanical breakdown test.
  • -> HV impulse test for Lanka transformer Ltd.
  • -> We are also engaged in the tests of HV cables, HV fuses and energy meter, circuit breakers etc.