Objective
To demonstrate the reliable operation of a combined PV and wind generator to power a flashing beacon lighthouse in Greece. The existing system with a revolving oil lamp, which operates using counter-weights that are raised by hand is replaced by a long range flashing beacon consisting of halogen lamps each rated at 43 W.
The long term aim is that the system should be able to operate unmanned.
The pv power supply has operated in a satisfactory mode from November 1987 to November 1988, when, probably due to lightning stroke, the electronic components were destroyed. Repair has been made, along with improvement of the overvoltage protection. Since then the PV-lighthouse system works very well and has a high safety margin for permanent availability.
The unit energy cost is evaluated to be 16.9 ECU/kWh for the demonstration project and 7.0 ECU/kWh for a replication. DIESEL generation costs at such a site are of the order of 2.4 ECU/kWh.
1. INTRODUCTION
The project demonstrates a novel flashing beacon for use in lighthouses powered by PV. The approach reduces running costs both by saving fuel and by eliminating the need for personnel on site. The old oil lamps require manual winding every 1.5 hours, and the lighthouse is located 96 m above sea level in an inaccessible location. Three people are continuously in attendance to operate the existing system with a total of 6 persons working in shifts.
2. TECHNOLOGY
The new lamp system, type DSL3 is supplied by Pintsch-Bamag is of rotary type, flashing, reaches 23 nautical miles and consumes 1.3 kWh per day at an operating voltage of 10.7 V.
The PV system (1300 Wp) comprises 10 Siemens modules SM144-18 wired in 5 strings of 2 modules each. (One sub-array has 3 strings, the other one 2 strings.)
The 2 m diameter wind generator, rated at 1000 W in a wind of 13,2 m/s, also contributes via an inverter to the power requirements of the system. Each PV array is connected to thebattery via a charge controller, type LR45-24EK of Siemens Solar with two stages of load management.
The battery consists of a VARTA solar battery rated at 24V/2000 Ah giving 48 kWh of storage, allowing security of power for 36 days without sun.
The DSL3 halogen lamp gets its power at 10.7 V through three DC/DC converters.
3. MONITORING
A telemetry system, powered by PV array and battery, transmits the climatic and system performance data to a central station. It does also call by telephone automatically in case of an emergency. The data are also stored on site on magnetic tape for later analysis. The format is in accordance with JRC Ispra Monitoring Guidelines. Monitoring data are available from April 89 to May 1991.
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Programme(s)
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Coordinator
10436 Athens
Greece
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.