电容式套管末屏接线法在绕组变形测试中的应用研究

Application and Research of End Shield Wiring Method of Capacitor Bushing in Winding Deformation Testing

提出了用套管末屏接线取扫描输出信号的新方法替代套管首端接线取扫描输出信号的旧方法,对两种方法的原理进行了对比分析,并通过现场试验验证了其可行性。试验结果表明,两种接线方法各个极值点即波峰、波谷对应频率和对应幅值具有一致性和对应性的关系,因此,新方法代替旧方法具有显著的可行性。

The new method using end shield of bushing to get scanning output signals is proposed to replace the old one which uses the head end of bushing. The theories of two methods are analyzed and compared and the feasibility of the replacement is verified with the field experiments. According to the test results, the corresponding frequencies and amplitudes of extreme points of these two methods have the uniformity and correspondence. Therefore, it is of obvious feasibility to replace the old method with new one.