Design and performance of a clean and economic power supply targeting energy independence and operative security
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Stand alone wind-diesel power systems address the major issues for the supply of remotely located consumers or the provision of enhanced energy independence. The specific configuration considered here comprises a prior wind turbine driven induction generator and a supplementary synchronous generator driven by a combustion engine, the latter caring for frequency control and reactive power balance. An accumulator-bank and a hydrogen storage path consisting of an electrolyzer and a hydrogen storage tank are added as short-term and long-term storage devices – respectively – in order to adjust volatile wind generation and varying load demand. The hydrogen re-conversion to electricity is achieved by design of the drive of the synchronous generator as a dual-fuel engine, fed with stored hydrogen primarily, and with diesel oil in case of the rare event of hydrogen storage emptiness. An elementary waste heat recovery from engine cooling water and from exhaust gases makes the system even more energy efficient and environment friendly. For proper sizing of the particular system components under minimization of the life cycle cost – which are composed of the initial installation cost, the replacement cost, the operation and maintenance cost as well as the remaining fuel cost – the meta-heuristic computational method of Particle Swarm Optimization (PSO) was applied. The crucial task of intelligently managing the energy storage strategy depending on their actual states of charge and the current excess power under a given load profile was solved by a fuzzy system and a subsequent time scheduler, the latter providing definite set-point steps for definite periods of time to the electrolyzer in order to achieve smooth and conservative operation. The concrete design and performance of the proposed system structure is shown with the two relevant application examples of independent electricity supply of the main hospital in Gaza-Strip, Palestine, and a remotely located dairy farm. For both cases the results of comprehensive long term as well as detailed short term simulations prove the possibility of continual electricity supply at reasonable cost, low emissions and high degree of energy independence.
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Design and performance of a clean and economic power supply targeting energy independence and operative security, Mohammed Mushtaha
- Sprache
- Erscheinungsdatum
- 2012
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- Titel
- Design and performance of a clean and economic power supply targeting energy independence and operative security
- Sprache
- Englisch
- Autor*innen
- Mohammed Mushtaha
- Verlag
- Shaker
- Erscheinungsdatum
- 2012
- ISBN10
- 3844011846
- ISBN13
- 9783844011845
- Kategorie
- Skripten & Universitätslehrbücher
- Beschreibung
- Stand alone wind-diesel power systems address the major issues for the supply of remotely located consumers or the provision of enhanced energy independence. The specific configuration considered here comprises a prior wind turbine driven induction generator and a supplementary synchronous generator driven by a combustion engine, the latter caring for frequency control and reactive power balance. An accumulator-bank and a hydrogen storage path consisting of an electrolyzer and a hydrogen storage tank are added as short-term and long-term storage devices – respectively – in order to adjust volatile wind generation and varying load demand. The hydrogen re-conversion to electricity is achieved by design of the drive of the synchronous generator as a dual-fuel engine, fed with stored hydrogen primarily, and with diesel oil in case of the rare event of hydrogen storage emptiness. An elementary waste heat recovery from engine cooling water and from exhaust gases makes the system even more energy efficient and environment friendly. For proper sizing of the particular system components under minimization of the life cycle cost – which are composed of the initial installation cost, the replacement cost, the operation and maintenance cost as well as the remaining fuel cost – the meta-heuristic computational method of Particle Swarm Optimization (PSO) was applied. The crucial task of intelligently managing the energy storage strategy depending on their actual states of charge and the current excess power under a given load profile was solved by a fuzzy system and a subsequent time scheduler, the latter providing definite set-point steps for definite periods of time to the electrolyzer in order to achieve smooth and conservative operation. The concrete design and performance of the proposed system structure is shown with the two relevant application examples of independent electricity supply of the main hospital in Gaza-Strip, Palestine, and a remotely located dairy farm. For both cases the results of comprehensive long term as well as detailed short term simulations prove the possibility of continual electricity supply at reasonable cost, low emissions and high degree of energy independence.