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| Company |
Elektrilevi
|
| Location |
Estonia
|
| Timeline | 2023 |
| Project Overview |
Elektrilevi partnered with Safegrid to enhance visibility and reliability across its distribution network. Through a pilot deployment in Tallinn, Safegrid’s Intelligent Grid System® demonstrated its value by identifying a hidden fault that could have led to a major outage affecting thousands of customers. |
| Products | Safegrid Intelligent Grid System® |
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This is a Safegrid Case Study.
Background
Elektrilevi is the largest grid operator in Estonia, serving over 533,000 customers across a network spanning 63,000 km. Ensuring uninterrupted service across such a vast system requires robust monitoring and early fault detection capabilities.
To improve network transparency and detect hidden issues, Elektrilevi initiated a pilot project with Safegrid in Tallinn’s distribution grid.
Challenge
Elektrilevi encountered a complex and potentially dangerous situation:
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A cable failure in a double-cable feeder
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The second cable continued supplying power, so no outage occurred
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The issue remained undetected for several weeks
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Existing monitoring systems did not identify the failure
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Risk of a critical outage if the second cable had failed
This type of fault is particularly difficult to detect because normal service continues despite a hidden vulnerability in the network.
Solution
Safegrid’s Intelligent Grid System® provided advanced monitoring and anomaly detection.
Key capabilities:
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Continuous analysis of network current behavior
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Detection of abnormal changes in feeding currents
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Early identification of missing phase conditions
Implementation outcome:
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Safegrid detected unusual current patterns and flagged a potential issue
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Elektrilevi was alerted to a possible missing phase
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Further investigation confirmed a broken cable in the feeder
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The fault was quickly repaired and the network restored to normal
Benefits
The Safegrid solution provided significant advantages:
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Early detection of hidden faults before escalation
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Improved network transparency and visibility
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Reduced risk of critical system failure
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Faster, data-driven decision-making and response
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Enhanced grid reliability and resilience
Results
With Safegrid’s Intelligent Grid System®, Elektrilevi achieved:
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Prevention of a potentially critical grid failure
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Protection of thousands of customers from outage
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Identification of a fault undetected by legacy systems
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Improved confidence in grid monitoring capabilities
“Thanks to Safegrid system we were able to eliminate a potentially critical failure from our grid which could have escalated to a fault causing an outage to thousands of customers.”
— Taavi Tammeorg, Chief Specialist, Elektrilevi
Conclusion
This case highlights the importance of advanced monitoring in identifying hidden risks within power distribution networks. Safegrid’s Intelligent Grid System® enabled Elektrilevi to detect a critical fault that conventional systems missed, preventing a potentially widespread outage.
By improving visibility and enabling proactive intervention, Safegrid helps utilities strengthen grid resilience, minimize risk, and ensure reliable service for their customers.
As Safegrid’s Australian partner, Insulect helps local utilities and remote network operators gain greater visibility into network faults and turn complex fault data into actionable insights. Talk to our team to learn more.