Distance protection is the simplest type of protection that is widely used in electrical power systems. All the high voltage and extra-high voltage lines are equipped with a Distance Protection relay. Distance relaying is the art and science of the protection system, and therefore it is essential to understand and learn the working principle of overcurrent relays.
The course consists of 46 lessons in 5 hours. Complex topics of protection relays are covered and explained with straightforward explanations and various examples.
Distance relaying should be considered when overcurrent relaying is too slow or is not selective. Distance relays are generally used for phase-fault primary and backup protection on sub-transmission lines. They are also used for the protection of transmission lines where high-speed automatic reclosing is not necessary to maintain stability and where the short-time delay for end-zone faults can be tolerated.
Overcurrent relays have been used generally for ground-fault primary and backup protection, but there is also a growing trend toward distance relays for ground faults.
- Distance Protection Concepts
- Relay Characteristic Angle and Fault Characteristics
- Plain Impedance Relay
- Directional Impedance Relay
- Mho Relay
- Offset Mho Relay
- Zone 1, 2 and 3 Relay Settings
- Distance Protection Settings Network Diagram
- Basics of electrical concepts
Who Is This Course For
- Practicing power system engineers
- Substation engineers
- Maintenance staff
- Electrical engineering students planning on pursuing a career in power engineering
- Power System Protection Engineers
Downloadable course materials
After purchasing the course, students can download the following documents:
- Distance relays fundamentals (PDF)
- Fundamentals of line protection with distance relays (PDF)
- Ground Fault Protection of Overhead Transmission Lines - Focus On Distance Relays (PDF)
- Testing And Commissioning Guideline For Numerical Distance Protection Relay (PDF)