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Understanding How Recloser Operations Can Violate ITIC Curves and Impact Power Quality
This white paper examines how recloser operations, while essential for fault isolation in electrical grids, can produce voltage sags and swells that violate the ITIC curve. The analysis details the evolution of ITIC and CBEMA curves, explains recloser function, and demonstrates how typical recloser events manifest on ITIC plots, sometimes entering regions that risk equipment malfunction or damage. The paper concludes with recommendations for improving compatibility between grid protection devices and equipment voltage tolerance standards.
Key topics include:
- ITIC Curves
- Recloser
- Recloser Events on ITIC Curve
Why utilities should care:
Aligning grid protection device operation with equipment voltage tolerance standards helps reduce customer complaints, minimize equipment damage, and improve overall power quality, supporting reliability and regulatory compliance in modern electric networks.
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