Physics · Power Systems
When one of two electrically parallel transmission lines experiences a sudden short-circuit fault, the immediate dynamic response observed in the other (healthy) line is primarily:
- 1The healthy line becomes electrically open, causing its voltage and current to instantly rise to infinity.
- 2No change, as lines are magnetically isolated.
- 3A transient overvoltage across the faulted line due to reflected wave propagation from the healthy line.
- 4Redistribution of current and an increase in current through the healthy line.✓
Correct answer
Redistribution of current and an increase in current through the healthy line.
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