Online detection of inter-turn short circuit faults in dry-type air-core reactor

被引：17

作者：

Zhao, Yanzhen ^{[1
]}

Ma, Xikui ^{[1
]}

Yang, Jichao ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Sch Elect Engn, Xian, Shaanxi, Peoples R China

来源：

INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS | 2012年 / 39卷 / 1-4期

关键词：

Dry-type air-core reactor; inter-turn short circuit faults; faults detection; search coil; coupled field circuit method;

D O I：

10.3233/JAE-2012-1494

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：

Inter-turn short circuit faults are among the common faults occurring in dry-type air-core reactor. This paper presents an online detection method of inter-turn short circuit faults for dry-type air-core reactors by using search coils. Since this type of fault creates shorted turns in which there are high induced currents that can produce intense reversed magnetic field, the magnetic field distribution is no longer symmetrical. The variety of magnetic field from the normal condition to the fault condition can be monitored by search coils. Based on coupled field circuit method, the magnetic field distribution of the reactor and the induction voltage of the search coils are computed in different conditions. The proper mounted positions of search coils are suggested. The proposed method has been verified to be effective and easy for implementation by experimentation.

引用

页码：443 / 449

页数：7