CAJ | 학술논문

发电机在正常运行的情况下,其有功和无功变化时三次谐波电压的幅值与相位均发生变化,造成三次谐波电压保护误动现象时有发生。对此,介绍了发电机三次谐波电压的特点和主要特征,并按三次谐波电压构成定子接地保护的原理作分析探讨。
발전궤재정상운행적정황하,기유공화무공변화시삼차해파전압적폭치여상위균발생변화,조성삼차해파전압보호오동현상시유발생。대차,개소료발전궤삼차해파전압적특점화주요특정,병안삼차해파전압구성정자접지보호적원리작분석탐토。
Under the normal operation of motor,the amplitude and phase of third harmonic voltage both changes when the active and reactive change,which resulting in the third harmonic voltage protection false tripping occurs.In this regard,the features of third harmonic voltage motor are introduced.The main features of stator grounding protection principle constituted of third harmonic voltage are discussed and analyzed.