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Energies 2018, 11(1), 151; https://doi.org/10.3390/en11010151

An Integrated Start-Up Method for Pumped Storage Units Based on a Novel Artificial Sheep Algorithm

School of Hydropower and Information Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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Received: 22 November 2017 / Revised: 12 December 2017 / Accepted: 19 December 2017 / Published: 8 January 2018
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Abstract

Pumped storage units (PSUs) are an important storage tool for power systems containing large-scale renewable energy, and the merit of rapid start-up enable PSUs to modulate and stabilize the power system. In this paper, PSU start-up strategies have been studied and a new integrated start-up method has been proposed for the purpose of achieving swift and smooth start-up. A two-phase closed-loop startup strategy, composed of switching Proportion Integration (PI) and Proportion Integration Differentiation (PID) controller is designed, and an integrated optimization scheme is proposed for a synchronous optimization of the parameters in the strategy. To enhance the optimization performance, a novel meta-heuristic called Artificial Sheep Algorithm (ASA) is proposed and applied to solve the optimization task after a sufficient verification with seven popular meta-heuristic algorithms and 13 typical benchmark functions. Simulation model has been built for a China’s PSU and comparative experiments are conducted to evaluate the proposed integrated method. Results show that the start-up performance could be significantly improved on both indices on overshoot and start-up, and up to 34%-time consumption has been reduced under different working condition. The significant improvements on start-up of PSU is interesting and meaning for further application on real unit. View Full-Text
Keywords: pumped storage unit; artificial sheep algorithm; start-up strategy; parameter optimization; meta-heuristic pumped storage unit; artificial sheep algorithm; start-up strategy; parameter optimization; meta-heuristic
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Wang, Z.; Li, C.; Lai, X.; Zhang, N.; Xu, Y.; Hou, J. An Integrated Start-Up Method for Pumped Storage Units Based on a Novel Artificial Sheep Algorithm. Energies 2018, 11, 151.

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