【摘要】 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更多还原

【Abstract】 The digital current longitudinal differential protection can be realized by using mucroprocessor and the technology of data communication.The sampling synchronization scheme of the current for two ends of 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.At the ned of this paper,the characteristics of the two kinds of scheme are analyzed and discussed,and a technical promoted assumption for the synchronous sampling system on the operating equipment at site is presented.更多还原