Mho Ground Distance Protection | Example Using the SEL-411L Protection Relay

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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.
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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

[@romeroengineering]

Learn more with our online courses here: www.romeroengineering.co/courses

[@user-uv9tl4gw5w]

very clear explanations. Thumbs up

[@romeroengineering]

Glad it was helpful!

[@jollysingh3949]

Great explanation, exactly what I was looking for!

[@romeroengineering]

Glad it was helpful Jolly!

[@achikoqadidze669]

Very informative 🙏 i have some example of failure of sell 411 relay. Where i can ask you few questions 😊

[@candrafn]

thank you so much man, I was so confused about this one

[@romeroengineering]

Any time!

[@Ha1a_r]

Great and informative! Keep the excellent content

[@romeroengineering]

Much appreciated!

[@Rbraime722]

Great Work

[@romeroengineering]

Thanks Rashon!

[@surendrakverma555]

Very good. Thanks 👍

[@ImranKhan-nu6xw]

Kindly prepare a vedio of testing distance relay having quadralatic characristic

[@romeroengineering]

Thanks Imran, we'll consider it for a future video

[@casey7133]

Great walk through! You have any videos on creating test points and testing the settings?

[@romeroengineering]

Hi Casey, not yet, but we'll consider doing a video about it in the future