In the state of Queensland, Australia, hundreds of reclosers have been installed across the entire power distribution network. The Challenge – Remotely Controlling and Monitoring Reclosers
Automated control of reclosures ensure minimal downtime and higher power availability for consumers even in the event of downed powerlines resulting in increase revenues and happier customers. The business case for to automated control of reclosures easily justifies the infrastructure. Recloser also provide smart power quality information that can fed back to the utilities to conduct preventative maintenance. Reclosers enable the network to be segmented more effectively and provide better protection of high value assets as they can react to event well up the power distribution line before a substation or feeder is affected. Reclosers require far less power to trip, can be controlled remotely and most importantly can be distributed to any point throughout the power distribution network (transformer site). less sensitive to transients), can only be placed at feeder stations/substations and also require significantly more time to reset after an event. Breakers can be used to divide up the network, however require significantly more power to trip (ie. To minimise the impact of these issues, utility companies segment the power distribution network in smaller sections using automation devices known as reclosers. Loss of power to customer means loss of revenue and loss of credibility. It is critical for Power Utility Companies to ensure the power Grid is available to commercial and residential customers. It is estimated 80%-90% of faults occur from transients due to downed overhead power lines. Transients resulting from the short circuit have the potential to damage high value and critical power controls system such as regional substations and feeder stations. A rapid short circuit in a power network creates two primary issues for Utility Companies: damage to power control systems and loss of revenue. Downed overhead power lines from a tree or ice along a distribution network creates a short circuit in the network.
Power loss due to downed power lines in storms, ice build up and natural disasters (hurricane, earthquake, etc.) is a costly event.
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