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1 前言由于整流装置为非线性用电设备,因此,其网侧电流波形发生严重畸变。当采用发电机电压直接供电时,将有大量的高次谐波电流注入发电机定子绕组,干扰发电机的安全运行。当采用图1所示的接线方式时,情况将更为严重。GB-755-65规定:整块转子的汽轮发电机可带不高于额定电流8%的负序电流长期运行,这表明发电机具有一定的抗谐波
1 Preface As the rectifier device for the non-linear electrical equipment, therefore, the network side of the current waveform serious distortion. When using the generator voltage direct power supply, there will be a large number of high-order harmonic currents into the generator stator windings, disturbing the safe operation of the generator. When using the wiring shown in Figure 1, the situation will be more serious. GB-755-65 provides that: a single-rotor turbo generator with no more than 8% of the rated current of negative sequence current long-term operation, indicating that the generator has a certain anti-harmonic