Nonlinear modeling and dynamic analysis of a hydro-turbine governing system in the process of sudden load increase transient

被引：82

作者：

Li, Huanhuan ^{[1
]}

Chen, Diyi ^{[1
,2
]}

Zhang, Hao ^{[1
]}

Wang, Feifei ^{[1
]}

Ba, Duoduo ^{[1
]}

机构：

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

[2] Curtin Univ, Fac Sci & Engn, Dept Math & Stat, Perth, WA 6845, Australia

来源：

MECHANICAL SYSTEMS AND SIGNAL PROCESSING | 2016年 / 80卷

基金：

美国国家科学基金会;

关键词：

Hydro-turbine; Mathematical modeling; Sudden load increase; Dynamic transfer coefficients; Nonlinear dynamics; POWER; CONTROLLER; DESIGN;

D O I：

10.1016/j.ymssp.2016.04.006

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In order to study the nonlinear dynamic behaviors of a hydro-turbine governing system in the process of sudden load increase transient, we establish a novel nonlinear dynamic model of the hydro-turbine governing system which considers the elastic water-hammer model of the penstock and the second-order model of the generator. The six nonlinear dynamic transfer coefficients of the hydro-turbine are innovatively proposed by utilizing internal characteristics and analyzing the change laws of the characteristic parameters of the hydro-turbine governing system. Moreover, from the point of view of engineering, the nonlinear dynamic behaviors of the above system are exhaustively investigated based on bifurcation diagrams and time waveforms. More importantly, all of the above analyses supply theoretical basis for allowing a hydropower station to maintain a stable operation in the process of sudden load increase transient. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：414 / 428

页数：15

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