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1引言国家“十二五”规划中将智能电网建设列为重点建设领域,据不完全估计,到2015年投资额度将超过4.3万亿元。国家电网公司为配合智能电网的建设,近几年对智能电能表等电能计量器具进行大规模轮换和更新,导致了电能计量器具的需求量急剧增加。以智能电能表为例,根据国家电网公司有关部门的不完全预测,近几年
1 Introduction The national “Twelfth Five-Year Plan” lists smart grid construction as a key construction area. According to incomplete estimates, the investment amount in 2015 will exceed 4.3 trillion yuan. In order to tie in with the construction of smart grid, State Grid Corporation conducted large-scale rotation and updating of electric energy meters such as smart meters in recent years, resulting in a sharp increase in the demand for electric energy measuring instruments. Take smart watt-hour meter as an example, according to the incomplete forecast of relevant departments of State Grid Corporation, in recent years