Dynamic Optimization of Combined Cooling, Heating, and Power Systems with Energy Storage Units

Jiyuan Kuang, Chenghui Zhang, Fan Li and Bo Sun
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Jiyuan Kuang: School of Control Science and Engineering, Shandong University, Jinan 250061, China
Chenghui Zhang: School of Control Science and Engineering, Shandong University, Jinan 250061, China
Fan Li: School of Control Science and Engineering, Shandong University, Jinan 250061, China
Bo Sun: School of Control Science and Engineering, Shandong University, Jinan 250061, China

Energies, 2018, vol. 11, issue 9, 1-16

Abstract: In this paper, a combined cooling, heating, and power (CCHP) system with thermal storage tanks is introduced. Considering the plants’ off-design performance, an efficient methodology is introduced to determine the most economical operation schedule. The complex CCHP system’s state transition equation is extracted by selecting the stored cooling and heating energy as the discretized state variables. Referring to the concept of variable cost and constant cost, repeated computations are saved in phase operating cost calculations. Therefore, the most economical operation schedule is obtained by employing a dynamic solving framework in an extremely short time. The simulation results indicated that the optimized operating cost is reduced by 40.8% compared to the traditional energy supply system.

Keywords: CCHP system; energy storage; off-design performance; dynamic solving framework (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (19)

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