| 大中型电动机自适应继电保护装置的研制 |
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| 引用本文： | 袁旭龙,王林虎. 大中型电动机自适应继电保护装置的研制[J]. 高压电器, 2004, 40(4): 304-306 |
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| 作者姓名： | 袁旭龙 王林虎 |
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| 作者单位： | 邵阳学院,湖南,邵阳,422000;武汉大学电气工程学院,湖北,武汉,430072 |
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| 摘 要： | 阐述了装置和硬件电路的构成及其特点,从硬件及算法两方面考虑了抗干扰的措施,采用多主冗余系统的CAN总线网和RS-485通信网络,以适应不同层次的应用需要。采用自适应差动、速断、过流保护原理,以满足运行方式变化剧烈的要求。采用软件测量频率简化了硬件电路,采用定点采样提高了准确度。对样机进行试验,证明性能良好。
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| 关 键 词： | 电动机保护 自适应 测频 |
| 文章编号： | 1001-1609(2004)04-0304-03 |
Development of Self-adaptive Electric Relay Protection for Big/Middle Model Electromotor |
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| YUAN Xu-long ,WANG Lin-hu. Development of Self-adaptive Electric Relay Protection for Big/Middle Model Electromotor[J]. High Voltage Apparatus, 2004, 40(4): 304-306 |
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| Authors: | YUAN Xu-long WANG Lin-hu |
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| Affiliation: | YUAN Xu-long 1,WANG Lin-hu 2 |
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| Abstract: | The configuration and its features are described in this paper.The immunity to electromagnetic interference is considered from the aspects of hardware and software.Taking CAN bus with multi-master and redundant system and RS-485protocol for communication can meet various requiremeats of applications.Taking self-adaptive principle for differential protection,instantaneous trip protection and over-current protection can adapt the device to tremendous change of operation modes of the motor.Using software to measure frequency simplifies the hardware circuit.Using stable-point sampling improves the accuracy of calculation.The prototype is tested,achieving good results. |
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| Keywords: | electromotor protection self-adaptive frequency measurement |
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