Fault diagnosis of rotor winding inter-turn short circuit for sensorless synchronous generator through screw

被引：26

作者：

Wu Yucai ^{[1
]}

Ma Qianqian ^{[1
]}

Cai Bochong ^{[1
]}

机构：

[1] North China Elect Power Univ, Sch Elect & Elect Engn, Yonghua St 619, Baoding, Peoples R China

来源：

IET ELECTRIC POWER APPLICATIONS | 2017年 / 11卷 / 08期

关键词：

fault diagnosis; rotors; machine windings; synchronous generators; finite element analysis; hydroelectric generators; rotor winding inter-turn short circuit; sensorless synchronous generator; screws; fault deterioration; economic losses; sensorless online detection method; turbo generator; hydro-generator; finite-element simulation; fault diagnosis method; power; 550; MW;

D O I：

10.1049/iet-epa.2017.0118

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：

Timely and accurate detection of the rotor winding inter-turn short-circuit fault of a synchronous generator can reduce the more serious damages caused by fault deterioration and economic losses, so developing online detection methods with high sensitivity is necessary. On the basis of the structural characteristics of the synchronous generator, this study proposes a sensorless online detection method for rotor winding inter-turn short-circuit faults, respectively, taking a 300MW turbo generator and a 550MW hydro-generator as the objects of finite-element simulation. The results show that the new fault diagnosis method of the rotor winding inter-turn short circuit for the sensorless synchronous generator has high sensitivity and can realise real-time monitoring of the faults.

引用

页码：1475 / 1482

页数：8

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