智能变电站计量中的量化误差分析Analysis on Quantization Errors of Metering in Smart Substations
朱海卫,肖涛,叶丹,张旭,陈友勇
ZHU Haiwei,XIAO Tao,YE Dan,ZHANG Xu,CHEN Youyong
摘要(Abstract)：
为了客观准确地认识智能变电站计量中量化误差的大小及其影响,针对电子式互感器合并单元的整个传输过程中产生的量化误差进行分析,计算量化误差对电能计量准确性的影响。通过分析验证,对于16位的A/D转换器,合并单元中按照LEC 61850-9-2协议组帧的系统中,量化误差很小,完全在误差等级范围内。
In order to objectively precisely understand how big quantization errors in metering of smart substations are and their influence, the paper analyzes quantization errors in the whole process of emerging unit of electronic transformer and calculates the influence of quantization errors on accuracy of electricity metering.It is analyzed and validated that in 16-bit A/D converter the system which frames in accordance with LEC61850-9-2 protocol in the merging unit owns the least quantization errors, which is absolutely within the error limit.
关键词(KeyWords)：
电子式互感器;量化误差;A/D转换;合并单元
electronic transformer;quantization error;A/D conversion;merging unit
基金项目(Foundation):
作者(Author):
朱海卫,肖涛,叶丹,张旭,陈友勇
ZHU Haiwei,XIAO Tao,YE Dan,ZHANG Xu,CHEN Youyong
DOI: 10.19585/j.zjdl.2015.03.006