cigré 2005, sc b5 colloquium in calgary preferential subject 1 question 8
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Cigré 2005, SC B5 Colloquium in Calgary Preferential Subject 1 Question 8. Zoran Gaji ć ABB Sweden. SC B5: PS1, Q8; Multifunctional Transformer Relays. COMPLEXITY ISSUES. Relay Complexity. Old Technology versus New Possibilities. Old versus New. - PowerPoint PPT PresentationTRANSCRIPT
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Cigré 2005, SC B5 Colloquium in Calgary Preferential Subject 1Question 8
Zoran GajićABB
Sweden
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SC B5: PS1, Q8; Multifunctional Transformer Relays
ADAPTIVE TECHNIQUE
Adaptive Relays,
Use or not use new features
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Adaptive Relays – OLTC Position Reading
On-line OLTC position monitoring available since 1998
Via BCD or mA signal
Hundreds of installations
Excellent performance record
Improved Trafo Diff and Voltage Control functionality
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Adaptive Relays - Transformer Differential
Adaptive inrush restraint
Adaptive bias calculation for 1½ CB stations
Available since 1998
Thousands of installations
Excellent performance record
Improved Trafo Diff operation
Paper in WPRC 2003
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New Feature –> Turn-to-Turn Fault Protection
Detects all turn-to-turn faults with more than 1% of shorted turns
Excellent add-on to the traditional differential protection