数字化变电站中实现电压电流同步的合并单元  

Merging unit for voltage-current synchronization in digital substation

作　　者：徐文佳[1] 赵伟[1] 肖勇[1] 黄松岭[1] 李世松[1] 

机构地区：[1]清华大学电机系电力系统国家重点实验室,北京100084

出　　处：《电测与仪表》2015年第1期1-7,共7页Electrical Measurement & Instrumentation

摘　　要：基于对合并单元的本质功能就在于实现电压电流信号同步的认识,对合并单元原定义给出了新的阐释,梳理了合并单元的标准,并按照更好实现采样数据同步的误差要求,讨论了目前规定使用的三种站级同步信号,根据模块化思想分析了其电压电流同步功能的实现过程,介绍了现有的合并单元硬件实现方案,最后给出了合并单元发展趋势等的看法。The merging unit is a key device employed in digital substation towards voltage-current synchronization. Based on its essential function, a new definition of the merging unit has been given out, and its relevant standards have been reviewed. Three types of synchronous signal are expounded according to chronization sampling error. The realization procedure for data synchronization of a based on a modular design conception. The hardware solutions for the merging unit future development trends of the merging unit are briefly described. the actual demands of data syn- merging unit has been analyzed are introduced as well. Finally,

关 键 词：合并单元 时间同步 IEC61850 数字化变电站 

分 类 号：TM933[电气工程—电力电子与电力传动]