Mathematical model and parametric uncertainty analysis of a hydraulic generating system

RENEWABLE ENERGY

卷:136

Article

Xu, Beibei¹  Chen, Diyi^1,2  Patelli, Edoardo³  Shen, Haijun⁴  Park, Jae-Hyun⁵ 

[1] Northwest A&F Univ, Inst Water Resources & Hydropower Res, Yangling 712100, Shaanxi, Peoples R China

[2] Northwest A&F Univ, Minist Educ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Yangling 712100, Shaanxi, Peoples R China

[3] Univ Liverpool, Inst Risk & Uncertainty, Chadwick Bldg,Peach St, Liverpool L69 7ZF, Merseyside, England

[4] Yellow River Qinghai Hydropower Dev Co Ltd, Xining 810000, Qinghai, Peoples R China

[5] Chung Ang Univ, Sch Comp Sci & Engn, 84 Heukseok Ro, Seoul 06974, South Korea

关键词: Hydraulic generating systems;    Parametric uncertainty;    Global sensitivity;    Conversion efficiency;    Unit vibration;   

DOI  :  10.1016/j.renene.2018.09.095

来源: Elsevier

【 摘 要 】

Conversion efficiency and unit vibration are two important indexes in evaluating the stability of hydraulic generating systems (HGSs). Most of related studies have been carried out in the deterministic theory framework. As running times of HGS increased, understanding uncertainties and limitations of model parameters are important for accurate modeling and stability evaluation. In this study, first, we establish an integrated model of a HGS by proposing unbalanced hydraulic forces based on the Kutta-Zhoukowski assumption. Second, global sensitivity and parametric interactions for conversion efficiency and unit vibration are investigated based on this model. Finally, the novel unified model is verified with two conventional models. This integrated and accurate mathematical model is a major advance in the diagnosis and prediction of failures in hydropower operation. (C) 2018 Elsevier Ltd. All rights reserved.

【 授权许可】

Free