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فيديو شرح Distance Protection of Transmission Lines Example Using the SEL-421 Protection Relay ضمن كورس انظمة الحماية الكهربية شرح قناة Romero Engineering Company، الفديو رقم 18 مجانى معتمد اونلاين
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
SEL-421 Mho Element Plotter Spreadsheet: https://www.romeroengineering.co/downloads-mho-element-plotter
In this video we discuss how to protect a transmission line implementing a distance protection scheme using the SEL-421 protection relay as an example. We go over how to calculate the Zone 1 (underreaching) and Zone 2 (overreaching) settings to develop a robust protection scheme that protects the entire transmission line.
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00:00 Intro
00:30 Mho element plotter spreadsheet
02:35 Zone 1
04:03 Zone 2
05:10 Example transmission line settings
12:30 Programming the SEL-421 Relay