The Optimal Energy Dispatch of Cogeneration Systems in a Liberty Market

被引:2
|
作者
Lin, Whei-Min [1 ]
Yang, Chung-Yuen [1 ]
Tu, Chia-Sheng [2 ]
Huang, Hsi-Shan [2 ]
Tsai, Ming-Tang [3 ]
机构
[1] Natl Sun Yat Sen Univ, Dept Elect Engn, Kaohsiung 807, Taiwan
[2] Fuzhou Polytech, Coll Intelligence Robot, Fuzhou 350108, Fujian, Peoples R China
[3] Cheng Shiu Univ, Dept Elect Engn, Kaohsiung 833, Taiwan
关键词
cogeneration systems; Time-of-Use (TOU); CO2; emission; Ant Colony Optimization; ANT COLONY OPTIMIZATION; ECONOMIC-DISPATCH; COMBINED HEAT; OPERATION; PLANTS;
D O I
10.3390/en12152868
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
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.
引用
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页数:15
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