Power System Protection and Control - Mho Ground Distance Protection | Example Using the SEL-411L Protection Relay

Download our free 28-page power system protection fundamentals text-based course: https://www.romeroengineering.co/protection-and-control-fundamentals Online Courses: https://www.romeroengineering.co/courses Distance protection basics video: https://youtu.be/kTm-LrvdnBk In this video we discuss how mho ground distance elements work, and how to implement a ground distance protection scheme to protect a 230kV transmission line using the SEL-411L protection relay. We go over how to calculate the Zone 1 (underreaching) and Zone 2 (overreaching) settings, as well as how to calculate the zero-sequence compensation factor. Sign up to our online course subscription at: https://www.romeroengineering.co/offers/FRPvBQDG/checkout Book a one-on-one training session with Ricardo: https://www.romeroengineering.co/offers/ZEo7VkVz/checkout 00:00 Intro 00:47 Example transmission system in the ETAP software 01:48 The need for zero-sequence compensation factors in ground distance protection 02:37 Calculating the Zone 1 and Zone 2 reach settings 07:48 Calculating the zero-sequence compensation factor 10:09 Programming the SEL-411L protection relay 17:10 Outro