[Legacy Report] Generator and Transformer Protection

#Relaying #Protection #Protective

The PES and IAS Chapters will sponsor a technical seminar on the topic of Generator and Transformer Protection.  The session will be held on Friday, January 23, 2015 at PSE&G’s Hadley Road Facility, 4000 Hadley Road, South Plainfield, NJ  07080-1192.

Topic:

The seminar will cover Generator Protection including: 

• Review of Grounding Techniques and Types of Generator Connections

• Generator Protection as per IEEE C37.102, C37.101, C37.106 and NERC PRC standards

• Negative Sequence Protection Down to Continuous Rating

• 100% Stator Ground Fault – Third Harmonic vs. Injection Method

• Field Ground Fault detection with Injection Method

• Overexcitation (V/Hz) protection

• Low Directional Power Sensitivity Requirements for Sequential Tripping

• Distance Element Enhancements - Load Encroachment Blinding, Power Swing Blocking

• Out-of-Step Protection

• Loss of Field - Element Design to Match Machine Capability Curves, MEL and Steady State Stability

• Abnormal Frequency Protection

The seminar will cover Transformer Protection including:

• Modes of Transformer Failures

• Types of Protection: Phase & Ground Differential, Overcurrent, Overexcitation,

• Unique Factors for Differential Protection

  • Current Magnitude/Phase Differences

  • Effect on Differential Protection: In-Rush Phenomena, CT Saturation, Overexcitation

  • Use of a Ground Differential Element for Sensitive Ground Fault Protection

• Advanced Transformer Inrush and Overexcitation Detection providing Improved Security

• Current Summing for Transformer Overcurrent Protection in Breaker and a Half/Ring bus

• Through-Fault Accumulation & Alarm

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• South Plainfield, New Jersey
• United States

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