The hybrid power system sought is designed for Off Grid operations with a view to reduce OPEX with comparison to conventional power solutions running 24/7 generators. The site equipment will be Huawei cabinet with a -48 VDC input. Category Information Item Requirements Country PNG & Solomon Islands Basic information Application scenario Off-Grid and On grid sites 4 hours/day with 184 Ah batteries Grid condition (mean On-Grid Site as backup outage time) Off-Grid Site 24 hours/day (24x7) Indoor/Outdoor Outdoor Scenario New Site/Rebuild Site New Site and some replacement ON-Grid Site 1800-2000 W Power Consumption OFF Grid Site 1800-2000 W Table 1. In principal, the expected operation of the generator (genset) is as below. Typically the generator will run for about 30% of the time or less. For the rest of the time, the battery is discharging. A full cycle should take around one day hence the characteristics of battery, generator and load, and optimisation of the solution should support this. The charged battery bank will dissipates to preset voltage level (DOD 30-35%), At DOD level the start signal is sent to the genset and ATS, which takes over site load and recharges the discharged batteries. When batteries fully charged, genset stops and cycle repeats. Solar, wind or grid input into the system to minimise generator use. This should be available as a modular option where by it can be a plug and play solution For sites that have grid power the grid should charge the battery . If grid power is lost the batteries will discharge to DOD level. Once DOD has been reached the genset will start and take the site load and recharge the batteries until grid power returns. SCOPE OF SUPPLY
The hybrid power system sought is designed for Off Grid operations with a view to reduce OPEX with comparison to conventional power solutions running 24/7 generators. The site equipment will be Huawei cabinet with a -48 VDC input. Category Information Item Requirements Basic information Country PNG & Solomon Islands Application scenario Off-Grid and On grid sites Grid condition (mean outage time) On-Grid Site 4 hours/day with 184 Ah batteries as backup Off-Grid Site 24 hours/day (24x7) Scenario Indoor/Outdoor Outdoor New Site/Rebuild Site New Site and some replacement Power Consumption ON-Grid Site 1800-2000 W OFF Grid Site 1800-2000 W Table 1. In principal, the expected operation of the generator (genset) is as below. Typically the generator will run for about 30% of the time or less. For the rest of the time, the battery is discharging. A full cycle should take around one day hence the characteristics of battery, generator and load, and optimisation of the solution should support this. The charged battery bank will dissipates to preset voltage level (DOD 30-35%), At DOD level the start signal is sent to the genset and ATS, which takes over site load and recharges the discharged batteries. When batteries fully charged, genset stops and cycle repeats. Solar, wind or grid input into the system to minimise generator use. This should be available as a modular option where by it can be a plug and play solution For sites that have grid power the grid should charge the battery . If grid power is lost the batteries will discharge to DOD level. Once DOD has been reached the genset will start and take the site load and recharge the batteries until grid power returns. SCOPE OF SUPPLY
HybridPowerSystems.docx