Protection Coordination Study

Objective

Effective protection of power systems relies on ensuring that protective devices, such as relays and circuit breakers, function correctly and coordinate seamlessly to isolate faults while minimizing disruption to the overall system. This study focuses on developing reliable and efficient protection schemes tailored to the unique needs of each project, aiming to enhance system stability and safety.

Methodology

• Protection Scheme Modeling: We model the complete protection system, including relays, circuit breakers, and fuses, to analyze and optimize their performance.
• Time-Current Coordination Studies: We perform detailed time-current coordination studies to ensure selective tripping, where only the necessary device operates to clear a fault, preserving system stability.

Examples

We have coordinated overcurrent relays for LV, and 11kV to 275kV power systems and substations, ensuring that faults were cleared by the nearest upstream protective device. This minimized the impact on the network and improved reliability for critical loads.
For renewable power systems, designed and coordinated protection settings for relays and circuit breakers to handle both grid-connected and
islanded modes of operation.
For manufacturing facilities, we optimized the coordination between protective devices across the facility’s HV, MV and 415V systems. Our studies ensured that faults were isolated locally, preventing unnecessary outages to critical production lines.

By leveraging advanced modeling techniques and thorough coordination studies, we deliver robust protection solutions that ensure system safety, reliability, and minimal downtime.

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