全球能源互联网2025，Vol.8Issue(6)：734-742,9.DOI:10.19705/j.cnki.issn2096-5125.20250018
基于分岔理论的Ⅰ型全功率变速抽蓄机组稳定性分析
Stability Analysis of Type Ⅰ Full-power Variable Speed Pumped-storage Units Based on Bifurcation Theory
摘要
Abstract
The type Ⅰ full-power variable speed pumped-storage unit(full-power VSPS),with its flexible operating modes and rapid power response,has become a crucial device for ensuring the safe and stable operation of the new power system.However,the weak stability of its speed control system hinders its engineering application.To address this,a nonlinear electromechanical transient model for the type Ⅰ full-power VSPS was established.Based on Hopf bifurcation theory,the stability domain of the unit's governor control parameters was derived.The impact of each transfer coefficient of the pump-turbine on the area of the stability domain and the extreme points of the stability boundary curve of the unit's nonlinear model was analyzed.Additionally,the effect of the unit's parameters on the differences between the stability domains of the nonlinear model and the small-signal model was examined.Following the principles of computational simplicity for the stability domain and avoiding stability misjudgments,the applicable ranges of the unit's nonlinear model and small-signal model were determined.关键词
Ⅰ型全功率变速抽蓄机组/调速系统/Hopf分岔/非线性模型/小信号模型Key words
type Ⅰ full-power VSPS/governor system/Hopf bifurcation/nonlinear model/small-signal model分类
建筑与水利引用本文复制引用
栾一航,孙建军,贾燕硕,庄凯勋,丁理杰,史华勃..基于分岔理论的Ⅰ型全功率变速抽蓄机组稳定性分析[J].全球能源互联网,2025,8(6):734-742,9.基金项目
国家电网公司总部科技项目(SGSCDK 00XTJS2200250).Science&Technology Project of SGCC(SGSCDK 00XTJS2200250). （SGSCDK 00XTJS2200250）
