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| 电动机热过载保护研究 | |
| 引用本文： | 陆征军,王红青,赵华军,赵希才.电动机热过载保护研究[J].江苏电机工程,2012,31(3):20-23. |
| 作者姓名： | 陆征军 王红青 赵华军 赵希才 |
| 作者单位： | 1. 南京南瑞继保电气有限公司,江苏南京,211102 2. 华东电力试验研究院有限公司,上海,200437 3. 安徽开发矿业有限公司,安徽六安,237400 |
| 摘 要： | 正在制定的IEC 60255-149电热继电器的功能要求和修订的DL/T 744微机电动机综合保护装置通用技术条件,均涉及到电动机热过载保护。阐述了电动机热过载的物理过程和热过载保护的构成、整定、试验和运行,并将基于电动机热模型的热过载保护与普通过流反时限保护进行定量对比分析,以便保护电动机免受热过载危害的同时,合理地利用电动机的过载能力。 |
| 关 键 词： | 电动机保护 热过载保护 热模型 反时限特性 |
Research on the Motor Thermal Overload Protection |
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| LU Zheng-jun , WANG Hong-qing , ZHAO Hua-jun , ZHAO Xi-cai.Research on the Motor Thermal Overload Protection[J].Jiangsu Electrical Engineering,2012,31(3):20-23. | |
| Authors: | LU Zheng-jun WANG Hong-qing ZHAO Hua-jun ZHAO Xi-cai |
| Affiliation: | 1 (1. Nanjing NARI-Relays Electric Power Co.Ltd., Nanjing 211102,China; 2. East China Electric Power Test ＆ Institute Co.Ltd., Shanghai 200437,China; 3. Anhui Mining Development Co.Ltd., Liuan 237400,China) |
| Abstract: | The IEC 60255-149 measuring relays and protection equipment - part 149： functional requirements for thermal protection and DL/T 744 general specification for microprocessor-based motor protection equipment, both relate to motor thermal overload protection. The physical process of motor thermal overload and the structure, setting, test and operation of themal overload proteetion are expounded in the paper. Besides, the thermal overload protection based on motor thermal model and the common inverse-time over-current protection are compared and analyzed quantificationally. Thus, the motor thermal overload protection can use the motor overload ability rationally. |
| Keywords: | motor protection thermal overload protection thermal model inverse time characteristics |
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