A 25.9MW hybrid solar-diesel system is to be delivered by Aggreko to energy a brand new Gold Fields gold mine excessive within the Chilean Andes.
The system is to be comprised of 9.9MW of photo voltaic PV and 16MW of thermal diesel to supply a complete of 25.9MW to completely energy the brand new Salares Norte open-pit mine at an altitude of four,500m within the Andes in northern Chile’s Atacama area.
The location is distant, 190km distant from the closest city, and the climate circumstances are excessive, with excessive winds and snow generally skilled.
The answer is designed to satisfy the rigours of the situation with the excessive altitude efficiency diesel gensets offering again as much as the photo voltaic PV and incorporating spinning reserve and chilly reserve items to effectively handle peaks in demand.
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The system, Aggreko’s largest photo voltaic PV set up in Latin America, ought to ship dependable, modular energy provide throughout all 5 of the mine’s distribution factors. Moreover, it’s designed to surpass the Chilean authorities’s environmental requirements in addition to Gold Fields’ requirement for no less than 20% renewable energy technology for its mining operations.
“We labored arduous over two years to develop the very best answer for the mine with the principle necessities being reliability because of the remoteness and being environment friendly and environmentally pleasant,” Pablo Varela, Aggreko’s Latin America Managing Director, informed Power Engineering International in an unique interview.
“We checked out a number of choices however are restricted by the altitude. Diesel shouldn’t be essentially the most environmentally pleasant when it comes to emissions however it’s throughout the requirements and has different advantages corresponding to being straightforward to handle and is extra environment friendly than different thermal choices. In addition batteries can’t but work at that altitude because of the influence of the atmospheric stress on the inverters.”
Varela mentions the mountainous topography of the positioning as one other complexity, which introduced an engineering design problem. With the positioning use restrictions set by authorities, the photo voltaic arrays will likely be distributed in three “loopy formed” areas.
Once full, the answer is anticipated to attain $7.four million in value of vitality financial savings over the subsequent decade and an additional $1.1 million in carbon tax offset along with 104,000 tonnes of carbon emissions financial savings.
New applied sciences
The system is being supplied beneath a 10-year rental contract and it’s deliberate to repeatedly evolve it in step with advances in expertise.
“We will likely be applied sciences corresponding to batteries, not essentially to shift the technology from day to nighttime as that’s nonetheless very costly however to enhance the effectivity,” Varela mentioned.
“We don’t know the way the system will find yourself as with the evolution in applied sciences we might change half or all the energy plant over the subsequent ten years.”
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Aggreko has an extended historical past of collaboration with Gold Fields, probably the most latest tasks being one of many world’s largest renewable vitality microgrids on the Granny Smith gold mine in Western Australia.
The Salares Norte mine is anticipated to return into operation in mid-2022, when the complete thermal plant additionally is because of come into operation.
The put up Aggreko to ship hybrid energy system for top altitude Chile mine appeared first on Power Engineering International.