🎯 Course Description:
This 5-day advanced course is designed for engineers and technical professionals working with power system protection relays. It focuses on the principles and applications of relay coordination, selectivity, and discrimination in transmission, distribution, and industrial networks.
The course covers coordination studies, time-current characteristic (TCC) curves, grading techniques, and the use of software tools for relay setting and fault simulation. Participants will work through real-world case studies, miscoordination analysis, and protection scheme design to ensure safe and reliable system operation.
👥 Who Should Attend:
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Protection & control engineers
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Power system designers and consultants
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Substation and utility engineers
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Relay and switchgear testing teams
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SCADA & automation engineers involved in protection coordination
🗓️ Day 1: Introduction to Protection Coordination
| Time | Topic |
|---|---|
| 08:30 – 09:00 | Welcome, Introductions & Course Overview |
| 09:00 – 10:30 | Protection Philosophy – Importance of coordination and selectivity |
| 10:30 – 10:45 | ☕ Coffee Break |
| 10:45 – 12:15 | Types of Faults and Zones of Protection |
| 12:15 – 01:15 | 🍽 Lunch Break |
| 01:15 – 02:45 | Protection Device Overview – Relays, CTs, VTs, circuit breakers |
| 02:45 – 03:00 | ☕ Coffee Break |
| 03:00 – 04:30 | Workshop: Defining protection zones and coordination paths |
🗓️ Day 2: Relay Characteristics and Grading Principles
| Time | Topic |
|---|---|
| 08:30 – 10:00 | Time-Current Characteristics (TCC) – Inverse, definite, and very inverse curves |
| 10:00 – 10:15 | ☕ Coffee Break |
| 10:15 – 12:15 | Grading Margin Calculation – Minimum clearance times and relay speed |
| 12:15 – 01:15 | 🍽 Lunch Break |
| 01:15 – 02:45 | Relay Setting Coordination Methods – Plug setting, TMS, time dial settings |
| 02:45 – 03:00 | ☕ Coffee Break |
| 03:00 – 04:30 | Workshop: Plotting and analyzing relay curves using software |
🗓️ Day 3: Selectivity and Discrimination Techniques
| Time | Topic |
|---|---|
| 08:30 – 10:00 | Selectivity Principles – Backup vs primary protection logic |
| 10:00 – 10:15 | ☕ Coffee Break |
| 10:15 – 12:15 | Discrimination in MV/LV Systems – Fuses, MCCBs, IDMT, distance and differential relays |
| 12:15 – 01:15 | 🍽 Lunch Break |
| 01:15 – 02:45 | Zone and Load Discrimination – Parallel feeders, busbar sections |
| 02:45 – 03:00 | ☕ Coffee Break |
| 03:00 – 04:30 | Workshop: Designing a selective protection scheme for a radial network |
🗓️ Day 4: Coordination Studies and Software Applications
| Time | Topic |
|---|---|
| 08:30 – 10:00 | Steps in a Coordination Study – Load flow, fault current, relay setting |
| 10:00 – 10:15 | ☕ Coffee Break |
| 10:15 – 12:15 | Using Protection Software Tools – ETAP, PowerFactory, CYME, or equivalent |
| 12:15 – 01:15 | 🍽 Lunch Break |
| 01:15 – 02:45 | Integration with IEC 61850 – Logic interlocking and coordination |
| 02:45 – 03:00 | ☕ Coffee Break |
| 03:00 – 04:30 | Workshop: Fault simulation and relay coordination using software |
🗓️ Day 5: Troubleshooting, Misoperations, and Case Studies
| Time | Topic |
|---|---|
| 08:30 – 10:00 | Common Miscoordination Issues – Incorrect settings, CT saturation, relay overlap |
| 10:00 – 10:15 | ☕ Coffee Break |
| 10:15 – 12:15 | Root Cause Analysis and Troubleshooting Process |
| 12:15 – 01:15 | 🍽 Lunch Break |
| 01:15 – 03:00 | Case Studies: Coordination failures in substations and industrial plants |
| 03:00 – 03:15 | ☕ Coffee Break |
| 03:15 – 04:30 | Final Q&A, Feedback, Group Discussion & Certification |
📂 Course Materials Provided:
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Relay setting and coordination guide
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TCC curve examples and templates
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Protection coordination software tutorials
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Fault analysis and discrimination case studies
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CT/VT sizing and grading margin calculators
