Protection Paradigms: Power System Protection

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  • Topic: Relay, Transformer, Lightning
  • Pages : 14 (1731 words )
  • Download(s) : 45
  • Published : June 20, 2011
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Power System Protection S.A.Soman Power System Dynamics
Overview

Power System Protection
S.A.Soman
Department of Electrical Engineering IIT Bombay

System Protection Relays
Example System Underfrequency and Rate of Change of Frequency Relays Undervoltage and Reverse Power Relay

Lightning Protection
Lightning Overvoltages Lightning Protection Devices

Protection Paradigms - System Protection

Summary

Protection Paradigms - System Protection
Power System Protection S.A.Soman Power System Dynamics
Overview

1

Power System Dynamics Overview System Protection Relays Example System Underfrequency and Rate of Change of Frequency Relays Undervoltage and Reverse Power Relay Lightning Protection Lightning Overvoltages Lightning Protection Devices Summary

2

System Protection Relays
Example System Underfrequency and Rate of Change of Frequency Relays Undervoltage and Reverse Power Relay

Lightning Protection
Lightning Overvoltages Lightning Protection Devices

3

Summary

4

Protection Paradigms - System Protection
Power System Protection S.A.Soman Power System Dynamics
Overview

1

Power System Dynamics Overview System Protection Relays Example System Underfrequency and Rate of Change of Frequency Relays Undervoltage and Reverse Power Relay Lightning Protection Lightning Overvoltages Lightning Protection Devices Summary

2

System Protection Relays
Example System Underfrequency and Rate of Change of Frequency Relays Undervoltage and Reverse Power Relay

Lightning Protection
Lightning Overvoltages Lightning Protection Devices

3

Summary

4

Protection Paradigms - System Protection
Power System Protection S.A.Soman Power System Dynamics
Overview

System Protection Relays
Example System Underfrequency and Rate of Change of Frequency Relays Undervoltage and Reverse Power Relay

Overview of Power System Dynamics System protection requires study of system dynamics and control. Power system dynamics Can be described in terms of a set of differential and algebraic equations. Analysis is done by EMTP. Post fault system stability is determined by transient stability studies.

Lightning Protection
Lightning Overvoltages Lightning Protection Devices

Summary

Protection Paradigms - System Protection
Power System Protection S.A.Soman Power System Dynamics
Overview

System Protection Relays
Example System Underfrequency and Rate of Change of Frequency Relays Undervoltage and Reverse Power Relay

Lightning Protection
Lightning Overvoltages Lightning Protection Devices

Summary

Protection Paradigms - System Protection
Power System Protection S.A.Soman Power System Dynamics
Overview

System Protection Relays Following relays are used to detect system disturbances and for enhancing system stability. Under frequency and over frequency relays. Rate of change of frequency relays. Under voltage relays. Reverse power flow relays. Vector shift relays. For example, consider a voltage distribution system with local generation which is synchronized with the grid. During grid disturbances, the local plant generators have to be isolated from the grid.

System Protection Relays
Example System Underfrequency and Rate of Change of Frequency Relays Undervoltage and Reverse Power Relay

Lightning Protection
Lightning Overvoltages Lightning Protection Devices

Summary

Protection Paradigms - System Protection
Power System Protection S.A.Soman Power System Dynamics
Overview

1

Power System Dynamics Overview System Protection Relays Example System Underfrequency and Rate of Change of Frequency Relays Undervoltage and Reverse Power Relay Lightning Protection Lightning Overvoltages Lightning Protection Devices Summary

2

System Protection Relays
Example System Underfrequency and Rate of Change of Frequency Relays Undervoltage and Reverse Power Relay

Lightning Protection
Lightning Overvoltages Lightning Protection Devices

3

Summary

4...
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