What are the overvoltages due to switching surges and other abnormal conditions in high voltage systems?
Understand the Problem
The text discusses overvoltages in high voltage systems, particularly those caused by switching surges, system faults, and abnormal conditions. It explains their origins, characteristics, and implications for system design and equipment susceptibility.
Answer
Overvoltages may reach six times normal voltage due to switching surges.
Overvoltages due to switching surges in high voltage systems can reach up to six times the normal power frequency voltage. These surges occur from circuit-making and breaking, potentially damaging insulation and circuit breaker contacts.
Answer for screen readers
Overvoltages due to switching surges in high voltage systems can reach up to six times the normal power frequency voltage. These surges occur from circuit-making and breaking, potentially damaging insulation and circuit breaker contacts.
More Information
Switching surges can originate from actions like de-energizing lines, disconnection of reactors, energizing lines, and fault clearances. These surges can damage insulation and lead to power system faults.
Tips
A common mistake is underestimating the impact of switching surges. Identifying the specific actions causing the surges is crucial for correct mitigation.
Sources
- High Voltage Engineering - kdkce.edu.in
- Over Voltages Due to Switching surges - BrainKart - brainkart.com
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