电力电压互感器检定测量结果的不确定度评定  

Evaluation of Uncertainty in the Calibration Measurement Results of Power Voltage Transformers

作　　者：张永平 ZHANG Yongping

机构地区：[1]山西省机电设计研究院有限公司,山西太原030009

出　　处：《今日自动化》2024年第4期138-140,共3页Automation Today

摘　　要：电力电压互感器是安装在电力系统中用于计量与测量工频电压信号的转换装置,其将一次高电压信号转换为标准的二次信号,给测量装置、保护装置、计量装置提供标准电压信号。因为电力电压互感器涉及电能的准确计量,所以其转换准确度非常重要,文章根据JJG1189.4—2022《测量用互感器第4部分:电力电压互感器检定规程》,采用标准互感器和被试电力电压互感器模拟比较的方法,来测量被试电力电压互感器的比值差和相位差,根据测量结果进行不确定度评定。Power voltage transformer is a conversion device installed in the power system for metering and measuring power frequency voltage signals.It converts a high voltage signal into a standard secondary signal,providing standard voltage signals to measuring devices,protection devices,and metering devices.Because power voltage transformers involve accurate measurement of electrical energy,their conversion accuracy is very important.According to JJG1189.4-2022"Measurement Transformers Part 3:Verification Regulations for Power Voltage Transformers",this article uses the method of simulating and comparing standard transformers and tested power voltage transformers to measure the ratio difference and phase difference of the tested power voltage transformers,and evaluates the uncertainty based on the measurement results.

关 键 词：电力电压互感器 模拟比较法 不确定度评定 

分 类 号：TM451[电气工程—电器]