| 数字电流纵差保护中数据采样的两种同步方法 |
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| 引用本文： | 刘龙国,焉峰.数字电流纵差保护中数据采样的两种同步方法[J].山东电力技术,2001(1):40-42. |
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| 作者姓名： | 刘龙国 焉峰 |
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| 作者单位： | 山东石横发电厂(刘龙国!266002)，青岛电业局(焉峰) |
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| 摘 要： | 在利用微处理器和数据通信技术实现数字式电流纵差保护时 ,线路两端电流的同步采样是必需解决的关键技术问题。本文对现场设备 (LFP -931A型光纤电流差动保护 )中采用的同步采样方法和基于GPS的同步采样方法的基本原理进行了详细描述 ,对两种方法进行了分析和比较 ,并对现场中运行设备的数据同步采样系统提出了一种技术改进方案设想。
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| 关 键 词： | 数字电流纵差保护 同步采样 全球定位系统、数据通信 |
Two Kinds of Schemes of Sampling Synchronization for Digital Current Longitudinal Differential Protection |
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| Abstract: | The digital current longitudinal differential protection can be realized by using microprocessor and the technology of data communication.The sampling synchronization scheme of the current for two ends of transmission line is the key technique that must be solved,This paper describes two kinds of synchronized sampling scheme.One is used in LFP-931A digital current differential relay and another is based GPS technology.thcharacteristics of the two kinds of scheme are analyzed and discussed,and a technical promoted assumpion for the synchronous sampling system on the operating equipment at site is presented. |
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| Keywords: | Digital current longitudinal differential protection Synchronous sampling Global positioning system Data communication |
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