Sub synchronous torsional interaction of steam turbine under wind power oscillation in wind-thermal power bundled transmission system

被引：7
作者：
Li, Ren [1 ]
Zhao, Shuqiang [1 ]
Gao, Benfeng [1 ]
Zhang, Ruixue [1 ]
Hu, Yunting [1 ]
机构：
[1] North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Baoding 071003, Hebei, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS | 2019年 / 108卷
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Wind power oscillation; Sub synchronous torsional interaction; Wind-thermal bundled system; Sensitivity of shaft torsional mode; SSR MITIGATION; FARM; RESONANCE; MODEL;
D O I：
10.1016/j.ijepes.2019.01.007
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The scaled wind energy bundled with thermal power is an essential way for the consumption of renewable energy in wind farms far away from load center. However, practices have shown that sub synchronous torsional interaction may occur in wind-thermal power bundled transmission systems, which threatens the stability of bundled systems. In this paper, the impedance modeling method based on graphical state space is applied to obtain a detailed impedance model of thermal power unit, which contains the characteristics of shaft torsion. Based on time domain simulation, the responses of each torsional mode of thermal power unit to wind power oscillation are analyzed. The results show that when the frequency of wind power oscillation is close to the torsional mode frequency, the shaft torsional oscillation may be excited, but the risks of different torsional modes are different, which can be explained via the characteristics of shaft torsion in the impedance of thermal power units.
引用
收藏
页码：445 / 455
页数：11
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