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Photovoltaic central power station for remote areas in Spain

Objective

To conduct engineering design and development sufficiently to permit the subsequent procurement, installation, and operation of a 1 MW PV central power plant in the 1992 time frame. A key research objective is to demonstrate and evaluate a combined operation of a medium-sized hydroelectric plant and a large PV plant, resulting in the conservation of water in the reservoir.
Engineering design and development is being carried out in order to permit the subsequent procurement, installation, and operation of a 1 MW PV central power plant in a remote area of Spain. A combined operation involving a medium sized hydroelectric plant and a large photovoltaic (PV) plant are under evaluation resulting in the conversation of water in the reservoir. An important element of the project is to see to what extent the water reservoir can be used indirectly as an energy storage medium.

Results so far have shown that:
high power PV modules can be used to reduce the cost of the project;
15% 'saturn cell' module efficiency is available on a production level;
a new type of IGBT inverter can be employed.
The work Programme consists of the following main tasks:

1) Definition of design baseline and trade-off options,
2) An evaluation of selected large plants in Europe, USA, and Japan, including site visits as necessary,
3) Site evaluation/selection,
4) A detailed analysis of hydroelectric plant energy output profile and water reservoir table vs. generator output relationship,
5) Solar/weather data collection at the selected site, including installation of the monitoring system,
6) Environmental impact assessment,
7) A survey of available hardware and selection for preliminary cost analysis purposes,
8) An assessment of plant lifetime (e.g., 20 vs. 30 years), which affects life-cycle-cost results, and definition of technology needs,
9) Detailed design of the PV plant and civil works, including trade-offs of major cost elements of the PV plant, such as:
- Centralized vs. dispersed configuration (mainly involving the PV source circuits and inverters),
- The size of the PV module and/or pre-assembled panel,
- Type and size of inverters,
- Array structures,
- Array orientations (including fixed vs. tracking),
10) preparation of bid packages and acquisition of offers; a preliminary cost analysis is included here to assist in the definition of the final baseline configuration,
11) Economic analysis, and
12) preparation of plant monitoring and operation/maintenance plan.

The project will be carried out basically in two phases: the planning and assessment phase covering Tasks 1-7 above, and in the detailed design/analysis phase, Tasks 8-12. An important element of the project is the research work to see to what extent the water reservoir can be used indirectly as an energy storage medium. This is related to the idea of the conservation of water in the small- to medium-size reservoirs. Thus, rather than the conventional pumped-water approach, the aim is to reduce the water consumption for hydroelectric energy generation by using PV energy, especially in the summer months.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

Union Eléctrica Fenosa SA
Address
53,Capitán Haya
28020 Madrid
Spain

Participants (4)

Allgemeine Elektrizitäts Gesellschaft AG (AEG)
Germany
Address
Goldsteinstraße 235
60528 Frankfurt Am Main
BP Oil International Ltd
United Kingdom
Address
1 Finsbury Circus
EC2M 7BA London
INSTITUT FUER SOLARE ENERGIEVERSORGUNGSTECHNIK E.V
Germany
Address
Koenigstor 59
Kassel
WIRTSCHAFT UND INFRASTRUKTUR GMBH & CO PLANUNGS KG
Germany
Address
Sylvensteinstrasse 2
Muenchen