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Corona and Partial Discharge

August 2, 2017

Corona and Partial Discharge

Jadwal Pelatihan Corona and Partial Discharge

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Partial Discharge (PD), as its name would suggest, is an electrical discharge that occurs across a portion of the insulation between two conducting electrodes, without completely bridging the gap. PD’s are caused when there is a discontinuity in the insulation system and as a general ‘rule-of-thumb’ PD will occur in systems operating at voltages of 3000V and above (although it should be noted that PD can occur at lower voltages than this).

Partial discharges can occur in voids in solid insulation (paper, polymer etc), along the interfaces of multi-layer solid insulation systems, in gas bubbles in liquid insulation or around an electrode in a gas (corona discharge). Partial Discharge activity can initiate under normal working conditions in high voltage equipment where the insulation condition has deteriorated with age, has been aged prematurely by thermal or electrical over-stressing or due to improper installation (this leads to ‘infant mortality’).

PD can often be observed with the commissioning of new equipment due to improper installation, poor design and/or workmanship (this is seen particularly in cable joints and terminations which are made-up on site). It is known that poor workmanship can lead to ‘infant mortality’ of MV/HV networks with a disproportionate percentage of insulation failures being observed within the first 1-3 years of service compared to the rest of the service life of the cables/plant.



  1. To understand the basics of stator winding insulation systems and why they deteriorate
  2. To understand basic Corona and Partial Discharge theory
  3. To understand how Partial Discharge detection devices work
  4. To interpret the test data collected and relate the data to specific failure mechanisms, to enable you to plan maintenance



  1. Engineers working in HV department, in transmission and distribution
  2. Maintenance engineers working in HV equipments
  3. Senior technicians working in HV equipments


OUTLINE MATERI Training Corona and Partial Discharge

  1. Introduction to Corona and Partial Discharge
  2. Diagnostics Corona and Partial Discharge for High Voltage Equipment
  3. Equipment failure mechanisms
  4. Conventional and unconventional test techniques
  5. On-line and Off-line methods
  6. How to test different items of plant
  7. Deployment of Corona and Partial Discharge Testing in Asset Management Programs
  8. Ageing population problem
  9. Focus plant replacements/avoid unplanned outage
  10. Increasing failure rate or problem with a particular plant type
  11. Troubleshooting and failure investigations
  12. Safety (mostly with cable terminations and sealing ends/outdoor HV plant)
  13. Quality Assurance
  14. Corona and Partial Discharge Testing, and Diagnostics for MV and HV Cables
  15. Introduction to test methodologies
  16. PD Location methods
  17. Assessing criticality
  18. PD Testing and Diagnostics for MV Switchgear
  19. Partial Discharge Testing and Diagnostics for Motors and Generators
  20. Introduction to Online PD Testing of HV Motors and Generators
  21. Recognizing Phase-Resolved PD (PRPD) Patterns
  22. Assessing criticality
  23. Case studies





Case Study




Training Kit



Lunch + 2x Coffee Break


Pick Up Participant (Yogyakarta)


TRAINING FEE for Corona and Partial Discharge

Rp7.000.000,-/Peserta/Non Residential

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