Dynamic evolution of a hydraulic-mechanical-electric system with randomly fluctuating speed

Xu, Beibei, Chen, Diyi, Gao, Xiang, Tomas, Caraballo and Patelli, Edoardo ORCID: 0000-0002-5007-7247 (2018) Dynamic evolution of a hydraulic-mechanical-electric system with randomly fluctuating speed. NONLINEAR DYNAMICS, 92 (4). pp. 1801-1813. ISSN 0924-090X, 1573-269X

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Abstract

The generator speed is an important index in maintaining the stable connection between the hydraulic turbine and the electric power system. Historically, researches carried out are based on deterministic models. It is therefore a challenge to investigate the effects of random fluctuating speed on the dynamic evaluation of the hydraulic–mechanical–electric system as variable renewable generation sources link to the electric power system. Here, we proposed a probabilistic model and solved it by the Chebyshev polynomial approximation method. We also made a careful comparison implemented by the deterministic and the probabilistic models. Finally, we showed how the random excitations affect the dynamic evaluation of the system output.

Item Type:	Article
Uncontrolled Keywords:	Vibration characteristics, Hydraulic-mechanical-electrical system, Randomly fluctuating generator speed, Elastic water hammer, Chebyshev polynomial approximation
Depositing User:	Symplectic Admin
Date Deposited:	07 Nov 2018 11:00
Last Modified:	07 Dec 2024 18:49
DOI:	10.1007/s11071-018-4163-8
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3026869