匝间绝缘故障对干式空心电抗器电感参数影响的仿真研究  

Simulation Study of the Influence of Turn-to-turn Insulation Fault on Inductance of Dry-type Air-core Reactors

作　　者：苟烜齐 刘轩东[1] 杨昊[1] 李晓昂[1] 王帅[1] 张乔根[1] 

机构地区：[1]西安交通大学电气工程学院,西安710049

出　　处：《高压电器》2015年第10期117-121,127,共6页High Voltage Apparatus

摘　　要：干式空心电抗器存在匝间故障时,主要对其电感参数造成影响,准确计算空心电抗器不同位置处故障电感参数变化量,对分析空心电抗器故障位置具有很重要意义。文中分别采用解析法和有限元法计算一个完整电抗器线圈电感参数,确定计算结果的准确性,然后采用有限元法模拟线圈匝间短路,针对不同短路位置,计算线圈电感变化量。结果表明:同一故障位置,越靠近外侧对电抗器整体电感参数影响越大;同一层不同故障位置,越靠近中部对电抗器整体电感参数影响越大。通过电路仿真,不同位置处故障,所测波形的衰减频率的不同,验证了电抗器匝间绝缘检测的有效性。The aircore reactor＇s inductance parameters are influenced by its turn-to-turn failure. Accurately calculating the change of inductance of air core reactor is significant for evaluating the fault location. In order to simulate the turn-to-turn short circuit failure of the reactor, inductance parameters of the reactor are obtained in this paper. The analytic method and the finite element method are employed to calculate the electromagnetic parameters of the dry- type air-core reactor. And the changes in inductance value of the air-core reactor are also obtained by taking different short-circuit location into account. It is indicated that the induction value decreases when the middle- location fault moves from the inner layer to the outer layer, and that the induction value increases when the fault location moves from the middle position to two ends. This work can provide a guidance for the proposition of the test method locating the turn-to-turn short circuit in the reactor.

关 键 词：干式空心电抗器 匝间绝缘 电感 有限元分析法 

分 类 号：TM47[电气工程—电器]