Part 1 Basic Concepts of Protection System

Описание: Speaker information: Pankaj Kumar Jha
Chief Manager, Power Grid Corporation of India Ltd.
(Power System Engineer with more than Fifteen (15) years of industrial experiences.)

This video is in Hindi

Modern power systems are becoming increasingly complex due to aging infrastructure, large-scale integration of renewable energy sources, and rapid technological advancements such as digital substations and IEC-61850 based protection systems. This series of six videos are created to bridge the gap between theoretical concepts and real-world utility practices by explaining protection fundamentals, relay settings and regulatory requirements, enabling engineers to design, analyze, and operate protection systems more reliably and effectively. After watching this series of six sessions you will develop strong understanding of power system protection principles and their practical application in modern transmission networks. You will be able to interpret protection philosophies, understand the operation of major protection schemes for transmission lines, transformers, reactors, busbars, and breaker failure protection, and appreciate the impact of emerging technologies such as renewable energy integration, digital substations, and advanced communication systems.

Contents:
Power System Protection: From Fundamentals to Real-World Grid Failures
1. Basic Concepts of Power System Protection
 Protection philosophy and role in modern power systems
 Reliability, selectivity, speed, sensitivity and security
 Single failure criteria and redundancy concepts
 CEA Technical Standards and Uniform Protection Protocol
 IEGC requirements and RPC practices for protection systems
 Types of faults in power systems
 Fault current behavior and impact on equipment
 Classification of protection relays

2. Transmission Line Protection
 Overcurrent vs distance protection principles
 Distance relay characteristics and protection zones
 Distance zone coordination
 Carrier aided schemes (PUTT, POTT, blocking schemes)
 Power swing blocking, fuse failure and broken conductor protection
 Single-pole and three-pole auto-reclosing
 Dead time, reclaim time and blocking conditions

3. Transformer and Reactor Protection
 Differential protection principles
 REF protection and backup impedance protection
 CT saturation concepts, High impedance vs Low impedance differential
 Harmonics restraint vs Harmonic blocking
 Over-fluxing protection, Buchholz relay and auxiliary protections
 WTI, OTI and PRV
 Coordination between line, transformer and backup protections
 Practical considerations in relay setting calculations

4. Busbar and Breaker Failure Protection
 Busbar differential protection schemes
 Coordination of Zone-II with remote end breaker failure
 Local breaker backup (LBB/BFR) protection logic

5. Impact of Modern Grid Elements on Protection
 Effect of series capacitors and series reactors on transmission line protection
 Challenges introduced by inverter-based resources (IBRs)
 Concepts of LVRT, HVRT and Inverter Controls

6. Modern Protection Technologies
 Digital substations and IEC-61850 concepts
 Inter-substation communication using MPLS-TP
 Vendor-independent line differential protection
 Traveling Wave Fault Location (TWFL)
 Centralized and virtual protection systems

An incredible amount of time and effort is needed to develop these video tutorials. Each video takes approximately 6-8 hours to complete which includes learning the concept myself, brainstorming ideas to teach and explain the concepts, creating the presentations, Setup of analysis software, video recording, and editing. Your support truly makes all the difference. So, please like👍🏻, comment and share this video with your friends and keep watching this channel for more such videos in future.

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