Abstract
Renewable energy is widely used as a clean energy in the world, yet the intermittent of the power generation from renewable energy power plants, resulting in poor quality of power supply. However, the hybrid energy system and some energy storage devices can be installed to mitigate the power fluctuation, to achieve power smoothing and maximize the profit, a double-objective optimization model of hybrid system integrated with micro-hydro power (MHP), photovoltaic (PV), and pumped hydro storage (PHS) is established in this study. The day-ahead optimized operation strategy of the PHS based-on hour-level data of seven days is obtained, which aims to maximize the similarity value (SIM) between the power generation curve and load profile, and the economic revenue (ER) of the PHS. Optimized schedule is obtained by means of chance-constrained programming (CCP) and modified multi-objective particle swarm optimization (MOPSO). The performance of the model is evaluated by using the meteorological, the historical MHP power generation and the load data obtained in Xiaojin County, Sichuan province, China. The simulation results reveal that the best trade-off value between SIM and ER can be obtained on the Pareto front with comprehensive consideration of the system operation strategy and target. Furthermore, the generation/load similarity can be increased 7.89% under the participating of the PHS.
Highlights
Electricity supply plays an increasingly important role with the development of economy
There are plenty of researches on wind power (WP)-pumped hydro storage (PHS) and PV-PHS hybrid system for rural electrification or home energy management, the results show that it can effectively improve energy utilization efficiency and the reliability and stability of power supply system
Since the power generated from Micro-hydro power (MHP) and PV can be approximately fully utilized under the participating complementary regulation of pumped-hydro plant in the MHPPV-PHS hybrid system, there is no need to optimize its economic revenue
Summary
Electricity supply plays an increasingly important role with the development of economy. T. Li et al.: Optimized Operation of Hybrid System Integrated With MHP, PV, and PHS Considering Generation/Load Similarity. Few researchers focus on the optimal operation of MHP-PV-PHS hybrid system and consider the similarity of the generation/load and the economy of the energy storage devices simultaneously. A novel concept for optimizing operation of MHP-PV-PHS hybrid system is proposed by considering both the similarity of generation/load and the economy of PHS under the uncertainty of MHP and PV. Based on the generation/load similarity of the MHP-PV-PHS hybrid system and the economic revenue of the PHS, a double-objective optimization model is established. The contributions of this paper are: (1) The concept of considering both the similarity of generation/load and the economy of energy storage system in MHP-PV-PHS hybrid off-grid system is proposed in this paper.
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
