| A New Proposal of Inverse-Time Characteristics for Overcurrent Relay Based on Microcomputer |
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| 作者姓名： | 黄彦全 肖建 蔡勇 唐磊 |
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| 作者单位： | [1]SchoolofElectricalEngineering，SouthwestJiaotongUniversity，Chengdu610031，China [2]SchoolofComputerScience，SouthwestScienceandTechnologyUniversity，Mianyang621002，China |
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| 基金项目： | TheNationalNaturalScienceFoundationofChina (No .6 9774 0 2 4 ) |
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| 摘 要： | The conventional time function of electromechanical relays is hard to coordinate with other relays．In order to promote the application of inverse-time overcurrent relays，a new time function for microprocessor-type relay is proposed．The setting of the trip time for this relay is performed by determining the shortest trip time and the longest trip time，respectively．The results of analysis show that with the new time function，the inverse-time overcurrent relay is easy to coordinate with other relays and has a comparatively shorter trip time，and that the fault happens in the protective zone．
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| 关 键 词： | 时间反转特征 超流继电器 微型计算机 电源系统 |
A New Proposal of Inverse-Time Characteristics for Overcurrent Relay Based on Microcomputer |
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| Huang Yanquan Xiao Jian Cai Yong Tang Lei . School of Electrical Engineering,Southwest Jiaotong University,Chengdu ,China . School of Computer Science,Southwest Science and Technology University,Mianyang ,China.A New Proposal of Inverse-Time Characteristics for Overcurrent Relay Based on Microcomputer[J].Journal of Southwest Jiaotong University,2004,12(1):25-28. |
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| Authors: | Huang Yanquan Xiao Jian Cai Yong Tang Lei School of Electrical Engineering Southwest Jiaotong University Chengdu China School of Computer Science Southwest Science and Technology University Mianyang China |
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| Institution: | 1. School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China
2. School of Computer Science, Southwest Science and Technology University, Mianyang 621002, China |
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| Abstract: | The conventional time function of electromechanical relays is hard to coordinate with other relays. In order to promote the application of inverse-time overcurrent relays, a new time function for microprocessor-type relay is proposed. The setting of the trip time for this relay is performed by determining the shortest trip time and the longest trip time, respectively. The results of analysis show that with the new time function, the inverse-time overcurrent relay is easy to coordinate with other relays and has a comparatively shorter trip time, and that the fault happens in the protective zone. |
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| Keywords: | Dial setting Inverse-time characteristics Overcurrent relays Coordination |
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