详细介绍了葠窝电厂WL-06B型双微机励磁调节器的“恒α”控制方式。将发电机自并励励磁方式改为它励励磁方式,利用WL-06B型双微机型调节器的恒α控制方式给定子绕组做三相稳态短路特性试验,通过改变控制角的大小来减少或增加转子励磁电流以测得定子绕组的三相电流,根据短路特性曲线判断发电机三相电流的对称性,还可以用它判断转子绕组有无匝间短路故障。研究成果为今后试验工作提供了参考。

In this paper, we introduce the control mode of excitation regulator with constant α. WL-06B double-microcomputer excitation regulator in Shenwo power plant of Liaoning province is taken as an example. By changing the induction generator from self-shunted type into separately-excited type, we carry out three-phase short-circuit test for steady-state characteristics of generator, and obtain characteristic curve of the test. Moreover, we obtain the three-phase current of stator winding by altering the control angle and excitation current of rotor winding. We can also determine the symmetry of three-phase current and identify short-circuit failures among windings of rotor by using the characteristic curve. The research results offer reference for similar tests in the future.