Great Haddon - Primary Substation
Providing swift electrical emergency response, we restored a primary substation in Great Haddon back to full working order, quickly resolving their issues and future-proofing to prevent any others.
Overview
Upon arrival, we discovered multiple supply failures to key industrial and commercial clients, including Amazon and DSV. The T11 Circuit Breaker had tripped, and there were clear signs of a high-voltage flashover in the CT Chamber. Adding to the complexity, the substation roof was leaking, causing water to accumulate on the switchgear.
Solution
Our first step involved coordinating with the DNO to isolate the 33kV feeder circuit breakers, allowing us to safely isolate the T11, T12, and Bus-Section Circuit Breakers. Our investigation revealed significant damage to section A, while section B was relatively unharmed.
We promptly installed a temporary Sarnafil rubber roof to mitigate further water damage. After restoring the network, we left the site with the faulty section isolated and proper isolation certificates in place. On our return, we found opportunities to refurbish several feeder breakers, leading to substantial cost savings for our client.
During subsequent discussions with the client and equipment manufacturer, it was agreed that the initial installation was flawed. The equipment should have been housed in a brick structure rather than a GRP. Acting on this, we constructed a temporary kiosk for the switchgear, dismantled the existing GRP, and built a new brick structure with a sloping Sarnafil roof, complete with a drainage system and double-ventilated doors. We also installed additional heating, dehumidifiers, and an alarm system connected to the IDNO’s Scada system.
We promptly installed a temporary Sarnafil rubber roof to mitigate further water damage. After restoring the network, we left the site with the faulty section isolated and proper isolation certificates in place. On our return, we found opportunities to refurbish several feeder breakers, leading to substantial cost savings for our client.
During subsequent discussions with the client and equipment manufacturer, it was agreed that the initial installation was flawed. The equipment should have been housed in a brick structure rather than a GRP. Acting on this, we constructed a temporary kiosk for the switchgear, dismantled the existing GRP, and built a new brick structure with a sloping Sarnafil roof, complete with a drainage system and double-ventilated doors. We also installed additional heating, dehumidifiers, and an alarm system connected to the IDNO’s Scada system.
Outcome
Our rapid and efficient response to the initial call ensured minimal disruption to the industrial units relying on the substation. We maintained supplies wherever possible while executing the necessary repairs and upgrades. Our solution not only resolved the immediate issues but also future-proofed the site against similar problems.
As a testament to the quality of our work as expert Independent Connection Providers, our client has commissioned us to rebuild a second switch room, further solidifying our partnership.
As a testament to the quality of our work as expert Independent Connection Providers, our client has commissioned us to rebuild a second switch room, further solidifying our partnership.
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It’s been a pleasure working with Serconnect mainly at Great Haddon IDNO where they’ve transformed the site for the customer from a leaky old GRP to a custom-built brick enclosure building. Kevin and the team are professional and nothing seems like a challenge too far for them, I’d happily recommend them to others.
Martin Pilarski - Maintenance Programme Manager - UK Power Networks
Martin Pilarski - Maintenance Programme Manager - UK Power Networks
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