Co-ordination Action for Autonomous Desalination Units ... - ADU-RES

Pic. 6 The RO unit in Fuerteventura
- Public street lights with an average consumption of 44kWh/day and the domestic
consumption of the inhabitants of the village of 5000 kWh/month
- Sewage treatment plant with an average consumption of 96 kWh/day in summer
and 24kWh/day for the rest months of the year
- Winch to haul boats in from the sea with an average power consumption of 250
kWh/month
- Binary dump loads consisting of resistance blocks from 390 to 50 kW
The control system consists of an industrial PC, the monitor of which permits, via
specially developed software, the visualization in real time of the system in operation
and the storage of data at an average rate of 300 7 s. Figure 10 shows the block
diagram of all the devices controlled by the central control system (CCS). In addition
to that, there are local control systems (LCS) in the wind and diesel generators, the
hydro-compressor, the sewage plant, the freezer and the desalination plant.
The wind diesel system was designed for operation in the following three modes:
a. operation only of the diesel generator: occurs when the wind-driven generator
is out of service, either because of lack of wind or other causes
b. operation of the wind and diesel: occurs during those periods where the wind
is not sufficient for the wind-driven generator alone to supply the required
active power
c. operation of only wind generator: occurs when sufficient wind is available.
This mode is the only in which the desalination plant and the dump loads
which stabilize the system are connected.
WP2 ADU-RES 33