Northern Ireland Electricity Networks (NIE Networks) has launched a major aerial inspection program. The operator is using helicopters to patrol the overhead power lines that span the country. This initiative covers over 4,000km of the electricity network.
The goal is simple but critical. Trained observers on board use these flights to identify and record any signs of damage. They look for wear and tear on the lines and the equipment that keeps the power flowing.
The Challenge of Rural Networks
Maintaining the grid in Northern Ireland presents unique challenges. The geography dictates how the infrastructure is built.
Jenni McKeown, asset investment engineer at NIE Networks, explained the specific nature of their grid. She noted that the power network in Northern Ireland has the highest ratio of rural overhead lines per customer in the UK, apart from the remote Scottish Highlands.
This means there are a lot of cables crossing fields, valleys, and difficult terrain. Sending ground crews to walk these lines would take months. It is not efficient.
Why Aerial Patrols Work
Using a helicopter changes the game for asset management. It allows engineers to cover vast distances in a fraction of the time.
McKeown stated that they employ a helicopter as it is the quickest and most effective way of inspecting the lines. From the air, the crew can spot issues that might be invisible from the ground. This includes:
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Trees growing too close to the lines.
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Damaged insulators or cross-arms.
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Corrosion on the poles.
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Damage caused by recent storms or bird strikes.
From Inspection to Repair
The inspection is just the first step. Once the aerial team spots a defect, they log the location. This data is then used to direct refurbishment crews on the ground. These teams can then go directly to the problem spot to carry out detailed checks and necessary repairs.
This targeted approach saves time and money. Instead of searching for faults, the repair teams know exactly where to go.
Ultimately, this is about keeping the lights on. McKeown emphasized that this work will help to improve the reliability and quality of service for customers across Northern Ireland. By finding weak spots now, they can fix them before they cause a power cut.
