Extreme heat reaching 55°C poses a severe challenge for UHV (Ultra-High Voltage) substations in desert environments! Under such harsh conditions, even minute physical changes can harbor significant risks.
For instance, aluminum alloy conductors undergo thermal creep when carrying current at high temperatures, leading to conductor deformation and loose connections. This results in increased contact resistance ⚡; localized overheating can even trigger arcing faults.
Shear-head bolts utilize a preset breaking torque to ensure every bolt achieves and maintains the required clamping force. Even if the conductor creeps, the connection retains its clamping integrity.
Additionally, the bolts and contact surfaces feature anti-oxidation coatings, further mitigating the risks of oxidation and loosening. This design represents not only technical excellence but also a commitment to safety and reliability: stable connections ensure long-term safe system operation, reduce maintenance needs, and preserve asset value.
In such extreme 55°C environments, what other design or material innovations do you think could further ensure the long-term reliability of UHV systems? Feel free to share your thoughts in the comments!
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