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Energies 2018, 11(7), 1845; https://doi.org/10.3390/en11071845

Adaptive Hydraulic Potential Energy Transfer Technology and Its Application to Compressed Air Energy Storage

School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China
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Received: 18 May 2018 / Revised: 9 July 2018 / Accepted: 10 July 2018 / Published: 14 July 2018
(This article belongs to the Section Energy Storage and Application)
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Abstract

In recent years, Hydro-pneumatic cycling compressed air energy storage (HC-CAES) has become an important topic in compressed air energy storage (CAES) technology research. In HC-CAES, air is compressed by liquid and driven by electrical equipment when energy is stored, and then, liquid is used to drive the water conservancy equipment to generate electricity. In this study, adaptive hydraulic potential energy transfer technology is proposed to solve a series of problems in the HC-CAES system, including the high fluctuation range of gas potential energy, poor operating stability, low efficiency, and so on. Therefore, fluctuating potential energy can be stably transferred through the variable area hydraulic devices, which can be controlled with an on–off valve. The structure and operation scheme of the adaptive hydraulic potential energy transfer device used in the HC-CAES system are explained in detail; the device can provide a stable water head range for the highly efficient operation of water conservancy equipment. Moreover, an optimal operation scheme was determined through simulation analysis; a physical experiment platform was built to verify the feasibility of the design and stability of system operation. View Full-Text
Keywords: adaptive hydraulic potential energy transfer; stable water head; liquid-controlled compressed air energy storage; compressed air energy storage adaptive hydraulic potential energy transfer; stable water head; liquid-controlled compressed air energy storage; compressed air energy storage
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Fu, H.; Jiang, T.; Cui, Y.; Li, B. Adaptive Hydraulic Potential Energy Transfer Technology and Its Application to Compressed Air Energy Storage. Energies 2018, 11, 1845.

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