随着科学技术的进步、电力工业的迅速发展,生产系统中的电机数量和单机容量不断增加,相应的电机保护技术也需要有进一步的提高。文中针对电机的各种故障类型,借鉴国内外电机保护装置的经验,并结合现有的高压电机保护技术,提出了一套完整的电机保护方案。这套保护装置包括了低电压保护、过电流保护、差动保护和单相接地保护,可以同时对电机的多种问题实现保护,能有效保障高压电机的正常运行。%With the progress of science and technology,the rapid development of electric power industry,motor quantity and unit capacity in production system are increasing;the corresponding motor protection technology also needs to be further improved.For various fault types of motor,learning from domestic and foreign motor protection device experience,combined with the current existing high voltage motor protection technology,this paper puts forward a complete set of motor protection scheme.The protective device comprises low voltage protection,over current protection,differential protection and single phase grounding protection,that can protect multiple problems of the motor at the same time,can effectively guarantee the normal operation of high voltage motor.
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