Optimization of Operation Strategies for a Combined Cooling, Heating and Power System based on Adiabatic Compressed Air
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https://doi.org/10.1007/s11630-020-1170-0
Article ID: 1003-2169(2019)00-0000-00
Optimization of Operation Strategies for a Combined Cooling, Heating and Power System based on Adiabatic Compressed Air Energy Storage CHEN Shang1, ZHU Tong1*, GAN Zhongxue2, ZHU Xiaojun2, LIU Liuchen1 1. School of Mechanical and Energy Engineering, Tongji University, Shanghai 201804, China 2. ENN Science and Technology Development Co., Ltd., Langfang 065000, China © Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract: The fluctuations of renewable energy and various energy demands are crucial issues for the optimal design and operation of combined cooling, heating and power (CCHP) system. In this paper, a novel CCHP system is simulated with advanced adiabatic compressed air energy storage (AA-CAES) technology as a join to connect with wind energy generation and an internal-combustion engine (ICE). The capital cost of utilities, energy cost, environmental protection cost and primary energy savings ratio (PESR) are used as system performance indicators. To fulfill the cooling, heating and power requirements of a district and consider the thermal-electric coupling of ICE and AA-CAES in CCHP system, three operation strategies are established to schedule the dispatch of AA-CAES and ICE: ICE priority operation strategy, CAES priority operation strategy and simultaneous operation strategy. Each strategy leads the operation load of AA-CAES or ICE to improve the energy supply efficiency of the system. Moreover, to minimize comprehensive costs and maximize the PESR, a novel optimization algorithm based on intelligent updating multi-objective differential evolution (MODE) is proposed to solve the optimization model. Considering the multi-interface characteristic and active management ability of the ICE and AA-CAES, the economic benefits and energy efficiency of the three operation strategies are compared by the simulation with the same system configuration. On a typical summer day, the simultaneous strategy is the best solution as the total cost is 3643 USD and the PESR is 66.1%, while on a typical winter day, the ICE priority strategy is the best solution as the total cost is 4529 USD and the PESR is 64.4%. The proposed methodology provides the CCHP based AA-CAES system with a better optimized operation.
Keywords: combined cooling, heating and power (CCHP) system, advanced adiabatic compressed air energy storage (AA-CAES), optimization
1. Introduction The use of Distributed Energy System (DES) for energy utilization and environmental protection has increased dramatically in the last few years [1]. Meanwhile, renewable energy gets more attention in the
Received: Mar 21, 2019
DES because of its low-emission and sustainable utilization. However, the deployment of renewable energy sources, especially wind and solar energy, is restricted due to the intermittence of these sources [2]. Many researchers suggested energy storage techniques to solve the intermittence issue
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