Stochastic dynamic modeling and simulation of a pump-turbine in load-rejection process

被引：14
|
作者：
Zhang, Hao [1 ]
Su, Dong [1 ]
Guo, Pengcheng [1 ]
Zhang, Bo [2 ]
Mao, Zhenkai [2 ]
机构：
[1] Xian Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg, Xian 710048, Shaanxi, Peoples R China
[2] Power China Northwest Engn Corp Ltd, Xian 710065, Shaanxi, Peoples R China
来源：
JOURNAL OF ENERGY STORAGE | 2021年 / 35卷
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Pumped storage generation system; Stochastic dynamical model; Load-rejection process; Numerical simulation; VORTEX;
D O I：
10.1016/j.est.2020.102196
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This paper formulates a stochastic dynamic model of a pump-turbine in load-rejection process. Dynamic relative parameters are introduced to describe dynamic characteristics of the pump-turbine in the load-rejection process. The complex transient process results in the stochastic change of the time constant of water flow, and a stochastic variable c is innovatively introduced to establish the stochastic model of the pump-turbine. Then, stochastic dynamic characteristics of the pump-turbine in transient process are investigated. The effects of the stochastic intensity on the dynamic behavior of the pump-turbine are analyzed by means of numerical experiment. Moreover, the influences of the characteristic curve slope on the stochastic dynamic characteristics of the pump turbine are studied.
引用
收藏
页数：10
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