Objective
To electrify a farm and dairy farm for autonomous operation. This center serves as a pilot agricultural and cattle farm (international training centre Spain/African countries).
Satisfactory operation continues for water pumping, household electricity, street lighting.
The milking machine and the milk cooler have not (yet) been installed.
The load is lower than designed and hence the battery is always fully charged. As the charge regulator allows gassing of the battery, the distilled water for the battery has to be replenished monthly.
Good date for the analytical monitoring for the period from January 1993 to December 1994 have been analysed.
One system with charge regulator and battery, supplying through five inverters the power to the ac-loads :
1.) milk cooler, (0.93 kW), Alfa Laval
2.) household loads, (0.67 kW)
3.) illumination, (0.71 kW)
4.) Water pumping (1 kW)
5.) Road lighting (0.35 kW)
and directly in dc, 48 V: milking machine (2.2 kW), Alfa Laval. Nr. of subsystems : 1
Power of subsystems : 12.8 kWp
Total power : 12.8 kWp
Backup : None
Number of modules : 272
Module description : ISOFOTON type M-75-L, 47 W, monocristalline, 1222 x 328 mm.
Connection : 4 in series, 14 parallel strings in 4 arrays and 12 parallel strings in one array.
Support : On racks, fixed tilt angle of 60 degrees.
Max power tracker : None.
Charge controller : ATERSA, type MP 60.
Battery : TUDOR 48 V. type 24EAN 120
Capacity (Ah) : 4560 Ah
Inverter : Four ATERSA, type CP-1200 + one type CP-600.
Inv. in(V) :48 V
Inv. out(V) : 220 V
Inv. power (kW) : 4 x 1.2 + 0.6 kW
Load description : milking machines (2808 W), milk cooler (920 W), TV, washing machine, refrigerator, ecc., road lighting, water pumping system.
Monitoring : Data logger ATERSA Datasol -16 PC.
Array current, battery current and voltage, currents to inverters. In-plane and horizontal pyranometers, ambient temperature and battery temperatures.
Topic(s)
Call for proposal
Data not availableFunding Scheme
DEM - Demonstration contractsCoordinator
28045 Madrid
Spain