EL-CID电磁铁心故障检测试验的应用研究

Application Research of Electromagnetic Core Imperfection Detection Test

为了检验发电机定子铁心质量,在制造过程中和安装现场,对发电机定子铁心进行试验是必不可少的。目前国内针对定子铁心更多地是采用常规试验方法,但是常规铁损试验所需的设备容量大、试验线路复杂,而且经济性较差、效率低下。而采用电磁定子铁芯故障探测仪(EL-CID)铁心试验只需提供约4%的额定磁通量,即可完成对铁心故障的诊断,其所需的励磁电源容量较小且容易配备和携带。为了更好地利用EL-CID检测方式进行铁心质量的判定,本文通过模拟多种故障状况下的试验,论证了EL-CID的使用条件和影响因素,为实际工作中EL-CID的应用提供更好的参考依据。

To inspect the stator core assembly of generator,it is imperative to conduct test for core in manufacture and power plant.At present,for stator core,we preferentially adopt routine test at home,but such routine core loss test requires equipments with large capacity and complex test circuit,which is less economical and inefficent.By contrast,EL-CID core test merely applies 4%of rated flux to diagnose the tested object,what′s more,it equips with the power source with comparatively smaller capacity and portable advantage.In order to efficiently use EL-CID judgment method for core quality,this paper testified its usage condition and effecting factors through tests simulating multi-kinds of fault states,so as to provide EL-CID test with more robust references.