Estudio de viabilidad de minicentral hidroeléctrica en el embalse de Urrunaga en Legutio (Álava)
[EN] The report focuses on the study of the technical, economic and environmental viability of a mini-hydroelectric power plant. Located in the province of Álava, Urrunaga and Ullibarri-Gamboa are two big regulating reservoirs in the Zadorra river basin. The reservoirs are connected by a pressurized...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | español |
| OAI Identifier: | oai:riunet.upv.es:10251/89868 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/89868 |
| Access Level: | acceso abierto |
| Palabra clave: | Mini-hydroelectric power plant Dam Nominal flow rate Available head Turbine Profitability Cabal nominal Bot disponible Rendibilitat Minicentral hidroeléctrica Presa Caudal nominal Salto disponible Turbina Rentabilidad INGENIERIA HIDRAULICA Máster Universitario en Ingeniería de Caminos, Canales y Puertos-Màster Universitari en Enginyeria de Camins, Canals i Ports |
| Sumario: | [EN] The report focuses on the study of the technical, economic and environmental viability of a mini-hydroelectric power plant. Located in the province of Álava, Urrunaga and Ullibarri-Gamboa are two big regulating reservoirs in the Zadorra river basin. The reservoirs are connected by a pressurized piping system with the aim of keeping them in the same water level. Currently, big part of the water in Urrunaga is used in the plant of Barazar, which has a concession since 1945. Assuming that this concession ends and is no longer granted, this project intends to benefit from the increased water flow discharged in the dam. For that reason, the construction of a dam-toe power station is proposed. First of all, it is performed a field study to see if it is possible to build on it and to determine the gross-head. Then, the hydraulic resources are studied with the available historical data. From these data it will be determined the nominal flow rate to turbine. As a result of the wide range of flow rates, it is decided to establish two turbines to make the most of the resource. To determine the plant, it is held a solution study with all the possible options that adapt to the characteristics imposed by the environment. As the water intake the siphon is the less costly option. The principal selection criterion was the economic. However, the influence it has on the environment cannot be ignored, since it can be a reason to stop the project. After choosing the best option, all the elements needed to produce energy in the station are dimensioned. On one side, there is the hydraulic structure, aimed to conduct water from the reservoir to the plant and take it back to the river. On the other, the electromechanical equipment, accountable for converting the potential energy of the water in the reservoir in electric energy and carry it until it is connected to the nearest electricity line. The power of the station is calculated with net-head and the flow-rate determined before. There will be two Francis turbines Once all the elements are sized, it is followed by the economic study, since the first objective of the power station is to obtain benefit from the sold energy. The initial investment is estimated with the budget of the civil works, the annual income with the installed electrical power and finally, they have been estimated the maintenance and operation expenses. With that, it is obtained the amount of years needed to amortize the initial investment and the annual profit, and it is assessed if it will be cost-effective in a service-life of 25 years. Finally, it is held an environmental impact study. First of all, identifying the impacts and evaluating them according to the magnitude each impact has with the Leopold matrix. For all the identified risks, there are proposed corrective measures to mitigate the impacts. There is also developed an Environmental Vigilance Plan, which must be active along the stations service-life. |
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