Siemens has won the contract to supply systems to its customer Trung Nam Group in Vietnam and put the country's largest solar farm into operation.
The farm is the first solar project for Siemens in South-East Asia and has a module capacity of 258 MWp. The deliverables include inverters, power- and distribution transformers, gas-insulated medium-voltage switchgear, circuit-breakers, and a monitoring and control system.
All transformers are to be delivered as Sensformer. This new transformer class merges physics and information and equips transformers with a digital interface, that allows the operator to view its data in real-time.
The project, in the southern province of Ninh Tuan, will take shape by mid-2019. Solar panels will generate a combined DC voltage of 1,500 V. Inverters will convert the DC to 660 V AC, and transformers will first step this up to 33 kV and finally to 220 kV. This will then be fed into the high-voltage grid and the power distributed around the country.
The project will deliver up to 425 GWh per year. This is enough to supply approximately 200,000 households with electricity and saves around 250,000 tons of CO2.