Title:
Optimization of a Standalone High Renewable Energy System with Biogas-plant with Flexible-demand Orientated Biogas Production
Author(s):
Kirchner, D.
Document(s):
Paper
Slide presentation
Abstract:
Island systems in developing countries are usually powered by diesel generators and oil-fired power plants due to their reliability and stable energy production. Due to the fluctuating energy production, supply from wind and solar energy alone is not possible. However, by combining several different producers into a hybrid energy system, a stable supply is possible. Biogas plants can contribute to this. Current concepts are based on a biogas plant with continuous biogas production. Biogas production is designed according to the average annual energy requirement. To compensate for fluctuations from fluctuating producers, and in consumption — appropriate energy storage (biogas storage + battery) or the use of a diesel generator is necessary. Producing biogas according to demand by varying the substrate, the addition period and the addition quantity can minimize the required storage size and use of the diesel generator. The study showed that the necessary storage size could be reduced by 10% through flexible biogas production in a hybrid energy system consisting of PV, battery, biogas plant and diesel generator. Furthermore, it was shown that flexible biogas production has a cost-reducing effect when diesel costs rise.
Keywords:
bioenergy, distributed generation, flexible biogas production, island grid, hybrid energy system
Topic:
Biomass, Bio-based Products and Bioenergy Integration
Subtopic:
Biomass integration into energy systems
Event:
32nd European Biomass Conference and Exhibition
Session:
3BO.9.2
Pages:
370 - 379
ISBN:
978-88-89407-24-0
Paper DOI:
10.5071/32ndEUBCE2024-3BO.9.2
Price:
FREE
