Optimal integrated sizing and planning of hubs with midsize/large CHP units considering reliability of supply
Autor: | Ali Mohammad Ranjbar, Babak Mozaffari, Reza Ghaffarpour, Saeed Moradi |
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Rok vydání: | 2017 |
Předmět: |
Engineering
Renewable Energy Sustainability and the Environment business.industry Total cost 020209 energy media_common.quotation_subject Reliability (computer networking) Energy Engineering and Power Technology Control engineering 02 engineering and technology Sizing Reliability engineering Reduction (complexity) Nonlinear system Fuel Technology Nuclear Energy and Engineering Range (aeronautics) 0202 electrical engineering electronic engineering information engineering Electricity business Function (engineering) media_common |
Zdroj: | Energy Conversion and Management. 148:974-992 |
ISSN: | 0196-8904 |
Popis: | Use of multi-carrier energy systems and the energy hub concept has recently been a widespread trend worldwide. However, most of the related researches specialize in CHP systems with constant electricity/heat ratios and linear operating characteristics. In this paper, integrated energy hub planning and sizing is developed for the energy systems with mid-scale and large-scale CHP units, by taking their wide operating range into consideration. The proposed formulation is aimed at taking the best use of the beneficial degrees of freedom associated with these units for decreasing total costs and increasing reliability. High-accuracy piecewise linearization techniques with approximation errors of about 1% are introduced for the nonlinear two-dimensional CHP input-output function, making it possible to successfully integrate the CHP sizing. Efficient operation of CHP and the hub at contingencies is extracted via a new formulation, which is developed to be incorporated to the planning and sizing problem. Optimal operation, planning, sizing and contingency operation of hub components are integrated and formulated as a single comprehensive MILP problem. Results on a case study with midsize CHPs reveal a 33% reduction in total costs, and it is demonstrated that the proposed formulation ceases the need for additional components/capacities for increasing reliability of supply. |
Databáze: | OpenAIRE |
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