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Transmission Line Protection with L90

What is my take-home:
All the fundamentals you need for Transmission Line terminology and Line Differential protection.

Correct configuration of the L90 line current differential files and testing is thoroughly covered.

Who should attend?

Electrical maintenance team Electrical design engineers Utility managers on their journey of gaining a better understanding of Transmission Line protection and the use of UR GE Multilin transmission protection relays.

Recommended prerequisites: Electrical professional credentials UR family platform level-1

Recommended duration: 2 days


1 day + 2 days UR family platform level-1 (recommended!)
Suggested Agenda

Day 1:


Transmission Line fundamentals
Relaying basics
Circuit Breakers
Primary and Backup relaying
Introduction to Symmetrical component
Current and Potential Transformers

Day 2:

L90 Relays

Grouped Elements
Phase Differential protective theory
Protection element consideration for a typical L90 application
Line Current Differential theory
Protection element calculations for a typical L90 application

Friday, December 9, 2022
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