Background
An energy company in the Gulf region was developing a high-density electrical facility forming part of a major node on the global data network. For this type of infrastructure, continuous and stable power supply is critical to operations.
However, recurring equipment interruptions and voltage disturbances began to impact performance, raising concerns around supply reliability and the sensitivity of on-site electrical systems.
Challenge
The facility experienced repeated protection system trips during upstream grid disturbances. While these events appeared consistent with typical fault characteristics, they were resulting in avoidable operational interruptions to sensitive equipment.
At the time, it was unclear whether the issue was driven by:
- Utility-side disturbances
- Facility protection settings
- Equipment ride-through capability
- System design or coordination issues
Without a clear diagnosis, the client faced:
- Continued operational disruption
- Risk of misattributing the root cause
- Potential investment in unnecessary system upgrades
The core challenge was to distinguish between expected grid behaviour and avoidable facility response, and determine whether the system could be optimised rather than rebuilt.
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Solution
EPE conducted a comprehensive power quality and reliability investigation, analysing historical meter and oscillography data to reconstruct disturbance events and system response.
The analysis included:
- Detailed review of voltage, current, harmonic, and transient events
- Assessment of upstream grid disturbances
- Evaluation of internal MV/LV protection system behaviour
- Correlation between disturbance characteristics and protection responses
Based on this analysis, EPE delivered a targeted engineering assessment with practical mitigation strategies, including:
- Coordination with the utility to align expectations on disturbance behaviour
- Evaluation of dynamic reactive support options (e.g., STATCOM)
- Voltage conditioning approaches
- Adjustment and optimisation of protection settings
The objective was to improve ride-through capability and reduce unnecessary or nuisance trips without compromising system protection.
Key Insight
The analysis confirmed that many of the disturbance events were consistent with expected grid behaviour, but the facility’s protection response was overly sensitive.
The issue was not the presence of disturbances, but how the system responded to them.
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Result
The client gained clear visibility into the source and characteristics of disturbance events and was able to confidently distinguish between grid-driven and facility-driven impacts.
This enabled:
- Targeted adjustment of protection settings
- Implementation of focused mitigation measures
- Improved ride-through performance during grid disturbances
- Reduction in nuisance and avoidable operational interruptions
Importantly, these improvements were achieved without the need for unnecessary capital upgrades
The result was a more stable and resilient facility, with improved operational continuity and system performance.
Why It Mattered
For high-density electrical facilities, even short-duration interruptions can have disproportionate operational and financial consequences.
This engagement ensured that the root cause of recurring disruptions was accurately identified and addressed, enabling the client to stabilise operations through targeted optimisation rather than overinvestment strengthening both reliability and cost efficiency.