【摘要】 为提高现有发电机监测系统对转子接地故障的识别能力,研究了一种新的基于切换采样原理的发电机转子接地保护,并开发出相应的微机保护装置,该装置能实时监测发电机转子绕组的绝缘情况,判断转子绕组是否发生接地故障,确定故障位置,且灵敏度较高。该装置已投入现场试运行,效果良好。更多还原

【Abstract】 In order to improve the identification ability of current generator supervision system on the grounding fault of generator rotor, a new protection theory is researched and a corresponding digital protection device is developed. The device can be used to real-time monitor the insulation of generator rotor’s windings, identify rotor’s grounding fault and determine fault location, and the new protection device is of high sensitivity. The system has been put into operation with better effects.更多还原