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Deal with OHL and Transformer Protection
Yohan Fajar SidikDec 21, 2013
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Power System Generation Transmission Distribution
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Switchgear
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150 kV Circuit Breaker
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Center Break Disconnector
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CT and VT
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Surge Arrester
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Typical Relay Primary Protection Zones in a Power System
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Single Busbar Configuration
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Double Busbar Configuration
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Interlock Sequences rule to protect from mal-operation
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Introduction to Control Relay and Protection Main Protection : Line : Distance Relay Trafo : Differential Relay
Back Up Protection : Overcurrent Relay Bay Control Unit : Controlling, Measurement, Signalling
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Transformer Protection Using MiCOM P64x
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Transformer Protection – Cont’d ANSI Code 87T : Transformer
Differential Protection 87N : Earth Diff. Prot. 64 : Restricted earth fault
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Transformer Protection – Cont’d
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Line Feeder Protection Using MiCOM P44x or P54x P44x Distance Protection P54x Line Current Differential Protection
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MiCOM Relay Function ANSI Code 21 : Distance Prot. 25 : Synchrocheck 79 : Auto Reclose
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Overheadline Protection
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Convensional Panels
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Transformer and Feeder Panels
Transformer Panel OHL/Feeder Panel
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Feeder Panel Transformer Panel Substation Automation
System Panel
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HMI Overview
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HMI Overview – Record of Sequence Event
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References J. Lewis Blackburn, Protective Relaying: Principles
and Applications, CRC Press. ---------,Switchgear and Substations, Siemens