Characteristics and Origins of Voltage Sags
Voltage sags are short-duration reductions in voltage magnitude, often caused by faults in the power system. They can propagate through the network, affecting multiple customers.
Equipment Voltage Tolerance
Different types of equipment have varying tolerance levels to voltage sags. Understanding these tolerances is crucial for ensuring operational reliability.
Mitigation Strategies
Mitigating voltage sags involves:
- Fault Reduction: Minimizing the occurrence of faults through improved system design.
- Fault Clearing: Reducing the time to clear faults.
- Power System Changes: Adjusting the system configuration to minimize sag impact.
- Mitigation Equipment: Installing devices like uninterruptible power supplies (UPS) and dynamic voltage restorers (DVR).
- Improving Equipment Tolerance: Enhancing the voltage tolerance of critical equipment.
