Parameter identification and characteristics study of ball valve self-excited vibration systems in pumped storage power station

被引：0
|
作者：
Li B. [1 ,2 ]
Fang Z. [1 ,2 ]
Gui S. [3 ]
Wang Y. [3 ]
机构：
[1] College of Electrical Engineering & New Energy, China Three Gorges University, Yichang
[2] Hubei Provincial Key Laboratory for Operation and Control of Cascaded Hydropower Station, China Three Gorges University, Yichang
[3] Fujian Xianyou Pumped Storage Power Station Co., Ltd., Putian
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2023年 / 42卷 / 24期
关键词：
ball valve; method of characteristics; parameter optimization; particle swarm optimization; self-excited vibration;
D O I：
10.13465/j.cnki.jvs.2023.24.021
中图分类号：
学科分类号：
摘要：
In order to study the self-exeited vibration of a ball valve in pumped storage power station and maintain the normal operation of equipment, a modeling and analysis framework for the self-exeited vibration of a ball valve was proposed. Firstly, a comprehensive simulation model of self-excited vibration system was established based on the method of characteristics through the propagation characteristics of water hammer wave in a pressure pipe and the leakage characteristics of a flexible valve. Secondly, the uncertain model parameters were optimized based on particle swarm optimization algorithm to improve the consistency of monitoring data and simulation results. Finally, four comparative schemes were designed based on the optimization model to analyze the self-excited vibration characteristics. Results show that the larger the initial disturbance, the faster the growth rate of self-excited vibration. When the water hammer wave velocity in different pipelines is consistent, different pipeline length combinations will have a significant impact on self-excited vibration; the length and diameter of the bifurcated pipeline affect the frequency and growth rate of self-excited vibration respectively; the double flexible valve system will further increase the growth rate of self-excited vibration. © 2023 Chinese Vibration Engineering Society. All rights reserved.
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页码：175 / 184
页数：9
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