Distribution System Protection

This course is a must for engineers and electricians who wanted to have a comprehensive understanding of the methods and solutions in protecting medium-voltage utility-type distribution systems.

This course covers the principles, schemes and practices for protecting distribution feeders, buses and transformers.


Course Outline

  1. Power system faults – generator equations, Thevenin equivalent circuit, fault on radial line, fault on looped system
  2. Distribution system topology – radial, looped, primary systems. 
  3. Power system grounding – ungrounded, solidly grounded, low-impedance, high-resistance grounding
  4. Relay design concepts – digital relay architecture, analog to digital conversion, relay algorithms, digital filtering
  5. Equipment damage and protection concepts
  6. Protection systems – power system protection and control, DC tripping, zones of protection, circuit breakers, primary protection, backup protection, remote backup, local backup
  7. Instrument transformers – operation characteristics, selection criteria to avoid saturation
  8. Line overcurrent protection – 50/51, 50Q/51Q, 50N/51N
  9. Overcurrent device coordination
  10. Line Directional overcurrent protection – 67/67Q/67N
  11. Line Distance protection – 21/21N
  12. Line Differential protection – 87/87Q/87N
  13. Transformer protection – overcurrent protection (50/51), differential protection (87), restricted earth fault (REF) protection, overexcitation (24), 
  14. Transformer protection (mechanical protection) – thermal protection, sudden-pressure protection
  15. Bus protection – partial protection, partial differential protection, zone-interlocked protection, fault-bus protection

Event Information

  • Dates: October 7, 14, 21, 28, November 4, 11, 18, 25
  • Time: 6-11pm Philippine time
  • Last Day to Register: September 30
  • Total Course Duration: 40 hours
  • CPD: Self directed


About the Speaker

Ryan is a registered Professional Engineer in the Philippines, Canada and United States. He has over 16 years of working experience in industrial sectors, utility power and renewables. At present, he is a Senior Protection & Control Engineer working for one of United States leading engineering firm. He a member of the IEEE Power & Energy Society.

Training Format

  1. Lecture via live online Zoom meeting using a combination of presentation and manual lecture in a Blackboard application
  2. Discussion of theories, practical applications, manual calculations
  3. Demonstrations via software (excel, ETAP or SKM)
  4. Correlation with actual projects design/experience of the trainer
  5. Participants receive Handout materials and uploaded lecture notes after every session

How to register

    1. Read course description below.
    2. Fill and submit the imbedded Google form in this page. You will receive registration confirmation from Google. Check your spam folder and inbox. 
    3. Pay the registration fee by the indicated due dates. Payment info found here
    4. Once payment is made, send us an email at with your payment details (transaction number, date, amount).
    5. We will send you Zoom meeting invites and handout materials a week before the start.
    6. Add your contact list to make sure you will receive notification and reminders.

Register Here!

Fill-up and Submit Google Form below. Make sure to click on the Submit Button then check your email for confirmation.