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| 摘要: |
| 介绍一种中小电动机智能化综合保护。保护采用更准确反映电动机温升过程的正负热积累模型，充分考虑了电动机的冷态和热态时允许的温升不同，分别用全电流热过载和负序热过载保护转子绕组和定子绕组。启动的在线检测和自适应过电流保护的相互配合提高了保护的性能。 |
| 关键词: 中小型电动机 综合保护 过负荷保护 序电流 |
| DOI： |
| 分类号:TM320.73 |
| 基金项目: |
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| Integrated Protection for Miniature and Median Electromotor |
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LI Xiao hua YIN Xiang gen CHEN De shu
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| Abstract: |
| An intelligent integrated protection for miniature and median electromotor is presented. The protection adopts positive and negative heat accumulation models, which more exactly reflect the temperature rising of electromotor. The allowed rising temperature is different when the electromotor is on hot or cool condition. It applies complete current and negative sequence current heat accumulations to respectively protect rotor and stator windings. The mutual cooperation of on line inspecting startup and self adaptive over current protection improves the relay performance. |
| Key words: sequence current,relay protection,electromotor protection, |
