Ancillary Protection Function and their implementation in 7SA522 Relay | SOTF | STUB | VTFF | BRC

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Speaker information: Pankaj Kumar Jha
Manager, Power Grid Corporation of India Ltd.
(Power System Engineer with more than Ten (10) years of industrial experiences.)

This is a four part series. These sessions are recorded in English only. These are my recent lectures on distance protection of transmission lines delivered during training sessions at POWERGRID

Module-1: Distance protection basics and their implementation challenges in a complex transmission network.

Module-2: Carrier aided distance protection and some important settings of modern numerical relays.

Module-3: Distance protection ancillary functions and their implementation using Siemens 7SA522 Relay.

Module-4: The effects of Series compensation on Distance Protection of Transmission Lines.

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Distance Protection
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wow sir, being a powergridian i must say . our future is secure because of seniors like u.

amitkumar-imji
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Sir kindly make videos on testing these function
How to test

MrTechnicalRehan
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Sir can you do a lesson on TCS(Trip Circuit Supervision), how to implement on Relay. Thanks 🙏

smadusnk
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Why does the voltage increase at 12:40 when SOTF is present?

hasan
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How does the relay detect pole open threshold voltage?

SaumyaSingh-svcy
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Sir in broken conductor feature when one phase opens and there is no contact with ground then how zero sequence current magnitude will increase?

Fidahussain
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Sir I think only negative sequence current magnitude will increase. Please correct me if i am wrong.

Fidahussain
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Hi sir, how to differentiate digsi4 and digsi5 by knowing model number?! Eg:7UT82-DIGSI5
7SJ662-DIGSI4

sivanandham