A Determination Method for the Optimal Operation of Controllable Generators in Micro Grids That Copes with Unstable Outputs of Renewable Energy Generation

2014 ◽  
Vol 190 (4) ◽  
pp. 56-65 ◽  
Author(s):  
Hirotaka Takano ◽  
Peng Zhang ◽  
Junichi Murata ◽  
Takuhei Hashiguchi ◽  
Tadahiro Goda ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Energy Generation ◽  
Optimal Operation ◽  
Determination Method ◽  
Renewable Energy Generation ◽  
Micro Grids

scholarly journals Case Study of Residential PV Power and Battery Storage with the Danish Flexible Pricing Scheme

Energies ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 799
Author(s):  
Jacob Nørgaard ◽  
Tamás Kerekes ◽  
Dezso Séra
Keyword(s):  
Renewable Energy ◽  
Flow Simulation ◽  
Energy Generation ◽  
Optimal Operation ◽  
Economic Feasibility ◽  
Storage Unit ◽  
Pricing Scheme ◽  
Renewable Energy Generation ◽  
And Control

The economic viability of renewable energy generation is vital for sustainability. Ensuring that optimal operation is always achieved, using energy management systems and control algorithms, is essential in this endeavor. Here, a new real-time pricing scheme, the Danish flexible pricing scheme, illustrates how residential PV and battery systems can optimize the electricity bill of households, without changing consumption behavior or providing grid services in exchange. This means that the only addition is PV production, storage, and control. A case study is constructed from Danish household consumption data, irradiance measurements, and recorded spot prices. With the input data, the pricing scheme, and the energy flow, simulation models are computed in MATLAB, thereby validating the algorithmic potential and finding the best strategy for charging and discharging the energy storage unit. Different methods are compared to list the viable options and evaluate them, based on the economic feasibility for the household. Furthermore, a discussion of the system implementation is also included to highlight technical difficulties, co-integration opportunities, short-comings, and advantages present in the case study. In conclusion, it is possible to make renewable energy generation, and storage, viable for a Danish residential household under the new pricing scheme.

scholarly journals Optimal Operation of a Hydrogen Storage and Fuel Cell Coupled Integrated Energy System

2021 ◽  
Vol 13 (6) ◽  
pp. 3525
Author(s):  
Oscar Utomo ◽  
Muditha Abeysekera ◽  
Carlos E. Ugalde-Loo
Keyword(s):  
Renewable Energy ◽  
Fuel Cell ◽  
Hydrogen Storage ◽  
Storage System ◽  
Energy Generation ◽  
Energy System ◽  
Optimal Operation ◽  
Area Of Interest ◽  
Integrated Energy System ◽  
Renewable Energy Generation

Integrated energy systems have become an area of interest as with growing energy demand globally, means of producing sustainable energy from flexible sources is key to meet future energy demands while keeping carbon emissions low. Hydrogen is a potential solution for providing flexibility in the future energy mix as it does not emit harmful gases when used as an energy source. In this paper, an integrated energy system including hydrogen as an energy vector and hydrogen storage is studied. The system is used to assess the behaviour of a hydrogen production and storage system under different renewable energy generation profiles. Two case studies are considered: a high renewable energy generation scenario and a low renewable energy generation scenario. These provide an understanding of how different levels of renewable penetration may affect the operation of an electrolyser and a fuel cell against an electricity import/export pricing regime. The mathematical model of the system under study is represented using the energy hub approach, with system optimisation through linear programming conducted via MATLAB to minimise the total operational cost. The work undertaken showcases the unique interactions the fuel cell has with the hydrogen storage system in terms of minimising grid electricity import and exporting stored hydrogen as electricity back to the grid when export prices are competitive.

Renewable energy generation from livestock waste for a sustainable circular economy in Bangladesh

2021 ◽  
Vol 139 ◽  
pp. 110695
Author(s):  
KM Nazmul Islam ◽  
Tapan Sarker ◽  
Farhad Taghizadeh-Hesary ◽  
Anashuwa Chowdhury Atri ◽  
Mohammad Shafiul Alam
Keyword(s):  
Renewable Energy ◽  
Circular Economy ◽  
Energy Generation ◽  
Livestock Waste ◽  
Renewable Energy Generation
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