Protection Relay Coordination Course
Date: February 2-3, 2013
2-Day course

Venue: Institut Teknologi Bandung

Course Fee: -

* Includes 2-day course, training materials, certificate, coffee breaks and lunches.

Language: Bahasa Indonesia.

Instructor: Mr. Agung Firmansyah

The course is intended for electrical engineers and also those who want to extend their skills in relay coordination.

- Engineering professionals
- Power utility companies
- Research personnel involved in power systems studies
- Students

This course is held with joint cooperation with Indonesian Oil and Gas Community (Komunitas Migas Indonesia - KMI)

Course outline:

Module 1: Power System Overview
- Industrial distribution system
- Reading single line diagrams
- Low voltage, medium voltage and high voltage equipment
- Function of electrical switchgear

Module 2: Basics of Power System Protection
- Need for protection devices
- Basic requirements and components
- Protection schemes
- Codes and Standards

Module 3: Type of Fault and Short Circuit Calculation
- Fault type, characteristics and calculation
- Unbalance faults
- Concept and real application of symmetrical component method

Module 4: System Grounding and Ground Fault Current
- Comparison of grounding methods (solid, low resistance, high resistance, floating, hybrid)

Module 5: Preparing Relay Coordination
- Information required for preparing the study
- Defining basis of selectivity / coordination
- Time-current grading
- Energy discrimination of low voltage devices
- LV motor protection overcurrent setting (MCCB, fuse, overload)
- Cable protection
- High motor starting current problem
- Transformer feeder overcurrent protection
- Avoiding nuisance tripping due to transformer inrush switching current
- Medium voltage overcurrent motor protection
- MV motor fuse and contactor coordination
- Capacitor bank inrush switching
- Generator feeder overcurrent protection
- The need for voltage dependent overcurrent for generators

Module 6: Directional Overcurrent Protection
- The need for directional protection
- Ground directional protection
- Avoiding nuisance tripping due to capacitive current

Module 7: Other Factors Affecting Relay Performance
- Decaying current of generator
- CT saturation
- Low CT ratio vs high fault current

Module 8: Improving Protection Speed without Compromising Coordination
- Time constant based grading
- Zone selective interlocking
- Fast bus blocking scheme
- Bus differential protection

Module 9: Protection Coordination Report Preparation
- Design check list
- Work flow-chart
- Common mistake / misconception