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Generator labLab
← Generator lab

Part 1 · The idea

  1. 1Split any three
  2. 2Three circuits

Part 2 · Faults in real systems

  1. 3The four faults
  2. 4Grounding
  3. 5Transformers & the line

Part 3 · Protecting the system

  1. 6The fault recorder
  2. 7What relays see
  3. 8Clear it in time

Teacher guide

The recorded waves

Phases at the cursor

Sequence pieces at the cursor

Positive A, B, C

Negative A, C, B

Zero all in step

Numbers
Fault values after the fault starts (rms), in pu and real units
QuantityCurrentVoltage

Initial symmetrical (subtransient) values. AC decrement not modelled: near a generator the AC part also shrinks, from X″d toward X′d and Xd.

Fault
Show
Add traces
DC offset
System