Decision-making strategy for cogeneration power systems integration in the Lebanese electricity grid

Asmar, Joseph Al; Lahoud, Chawki; Brouche, Marwan

doi:10.1016/j.egypro.2017.07.113

Cited by 5 publications

(5 citation statements)

References 9 publications

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“…To date, several efficiency strategies have been developed to achieve this optimal operation [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Ref.…”

Section: Of 15mentioning

confidence: 99%

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The Optimal Energy Dispatch of Cogeneration Systems in a Liberty Market

Lin

Yang

et al. 2019

Energies

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This paper proposes a novel approach toward solving the optimal energy dispatch of cogeneration systems under a liberty market in consideration of power transfer, cost of exhausted carbon, and the operation condition restrictions required to attain maximal profit. This paper investigates the cogeneration systems of industrial users and collects fuel consumption data and data concerning the steam output of boilers. On the basis of the relation between the fuel enthalpy and steam output, the Least Squares Support Vector Machine (LSSVM) is used to derive boiler and turbine Input/Output (I/O) operation models to provide fuel cost functions. The CO2 emission of pollutants generated by various types of units is also calculated. The objective function is formulated as a maximal profit model that includes profit from steam sold, profit from electricity sold, fuel costs, costs of exhausting carbon, wheeling costs, and water costs. By considering Time-of-Use (TOU) and carbon trading prices, the profits of a cogeneration system in different scenarios are evaluated. By integrating the Ant Colony Optimization (ACO) and Genetic Algorithm (GA), an Enhanced ACO (EACO) is proposed to come up with the most efficient model. The EACO uses a crossover and mutation mechanism to alleviate the local optimal solution problem, and to seek a system that offers an overall global solution using competition and selection procedures. Results show that these mechanisms provide a good direction for the energy trading operations of a cogeneration system. This approach also provides a better guide for operation dispatch to use in determining the benefits accounting for both cost and the environment in a liberty market.

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“…To date, several efficiency strategies have been developed to achieve this optimal operation [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Ref.…”

Section: Of 15mentioning

confidence: 99%

“…[6] presented an dispatching scheme which economically transfers energy between facilities and utilities. An optimal operation of the cogeneration system is proposed, which will integrate energy into the electricity grid by using the decision-making technique [7]. Ref.…”

Section: Of 15mentioning

confidence: 99%

The Optimal Energy Dispatch of Cogeneration Systems in a Liberty Market

Lin

Yang

et al. 2019

Energies

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“…Dufo-Lopez et al (2011) used many control strategies for energy production to find the best result of the ''Pareto front''. Al Asmar et al (2017) introduced a new decision-making technique that is used to find a cogeneration power that respects the economy and the environment by multi-physical modeling of the integration of cogeneration systems in an electrical network, and a «multi-objective" optimization dealing with the economy and pollution factors. This power illustrates the best compromise between total cost and pollutant emissions (CO 2 ).…”

Section: Decision-making Strategymentioning

confidence: 99%

Untitled

2018

Afr J Eng Res

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There is an increasing concern about the need for energy security and impact of greenhouse gas emission all over the world. Energy efficiency has been identified as part of the solution to ensure the energy supply as well as lower the greenhouse gas emissions. CHP (Combined Heating and Power generation) and CCHP (Combined Cooling, Heating and Power generation) systems can contribute to the reduction of primary energy consumption and greenhouse gas emissions in residential and tertiary sectors, by reducing fossil fuels demand and grid losses with respect to conventional systems. The trigeneration systems are characterized by very high energy efficiency (80 to 90%) as well as a less polluting aspect compared to the conventional energy production since the waste heat is recovered from the engine cooling system and exhaust gases to use it for process heating, excess heat is also used to drive an absorption cooling system. In this paper, we will show a review on the studies of the trigeneration power plants in terms of components, modeling, optimization and decision-making techniques. For each section of the paper, a survey of previous studies with CHP/CCHP implementation is presented, along with a survey of the methods used in their modeling, optimization, and decision-making. New topics are discussed concerning the cogeneration and trigeneration systems specially in the modeling, optimization and decision-making techniques. In almost all reviewed works, CCHP systems are found to have positive technical and performance impacts.

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“…Compact combined cooling and power systems, which couple a combustion engine or gas turbine to an absorption refrigeration system, are considered a suitable alternative to single-generation systems [1,2]. This arrangement can also be referred to as compact electricity-cooling cogeneration systems, and has been applied to industries [3,4], the tertiary sector [5][6][7] such as in supermarkets and shopping centers, and also to meet the domestic energy demands of residential buildings [8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Exergoeconomic Assessment of a Compact Electricity-Cooling Cogeneration Unit

et al. 2020

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This study applies the SPecific Exergy COsting (SPECO) methodology for the exergoeconomic assessment of a compact electricity-cooling cogeneration system. The system utilizes the exhaust gases from a 126 hp Otto-cycle internal combustion engine (ICE) to drive a 5 RT ammonia–water absorption refrigeration unit. Exergy destruction is higher in the ICE (67.88%), followed by the steam generator (14.46%). Considering the cost of destroyed exergy plus total cost rate of equipment, the highest values are found in the ICE, followed by the steam generator. Analysis of relative cost differences and exergoeconomic factors indicate that improvements should focus on the steam generator, evaporator, and absorber. The cost rate of the fuel consumed by the combustion engine is 12.84 USD/h, at a specific exergy cost of 25.76 USD/GJ. The engine produces power at a cost rate of 10.52 USD/h and specific exergy cost of 64.14 USD/GJ. Cooling refers to the chilled water from the evaporator at a cost rate of 0.85 USD/h and specific exergy cost of 84.74 USD/GJ. This study expands the knowledge base regarding the exergoeconomic assessment of compact combined cooling and power systems.

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Decision-making strategy for cogeneration power systems integration in the Lebanese electricity grid

Cited by 5 publications

References 9 publications

The Optimal Energy Dispatch of Cogeneration Systems in a Liberty Market

The Optimal Energy Dispatch of Cogeneration Systems in a Liberty Market

Untitled

Exergoeconomic Assessment of a Compact Electricity-Cooling Cogeneration Unit

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