一种数字化电能表的现场快速校验方法  

A field fast calibration method of digital watt-hour meter

作　　者：吴瀛 刘佳 周会宾 赵进全[3] 罗文杰 WU Ying;LIU Jia;ZHOU Huibin;ZHAO Jinquan;LUO Wenjie(Extra High Voltage Power Transmission Company,China Southern Power Grid,Guangdong Guangzhou 510663,China;China Electric Power Research Institute,Beijing 100192,China;School of Electrical Engineering,Xi'an Jiaotong University,Shaanxi Xi'an 710049,China)

机构地区：[1]中国南方电网有限责任公司超高压输电公司检修试验中心,广东广州510663 [2]中国电力科学研究院有限公司,北京100192 [3]西安交通大学电气工程学院,陕西西安710049

出　　处：《工业仪表与自动化装置》2021年第3期67-70,共4页Industrial Instrumentation & Automation

摘　　要：随着数字化电能表在变电站中的应用日益广泛,现场校验需要准确高效的校验方法。针对目前数字化电能表校验方法存在检测速度慢的问题,提出了一种数字化电能表快速校验方法。该方法基于标准表法,通过标准表与数字功率源的集成,利用DSP高频数字采样输出高频电能脉冲,缩短校验时间。对于现场安装的0.2级数字表,当数字采样频率达到16 kHz时,算法误差不超过0.01%,一个测量点的测量时间仅为0.63 s,极大地减小了数字化电能表现场校验的时间。With the increasing application of digital watt-hour meter in substation,accurate and efficient calibration method is needed for field calibration.Aiming at the problem of slow detection speed in the current digital watt-hour meter calibration method,a fast calibration method of digital watt-hour meter is proposed.This method is based on the standard meter method.Through the integration of the standard meter and the digital power source,the DSP high-frequency digital sampling is used to output the high-frequency power pulse,which shortens the calibration time.For the 0.2 digital meter installed on site,when the digital sampling frequency reaches 16 kHz,the algorithm error is not more than 0.01%,and the measurement time of a measurement point is only 0.63 s,which greatly reduces the time of field calibration of digital watt-hour meter.

关 键 词：数字化电能表 标准数字表法 现场快速校验 DSP高频数字采样 

分 类 号：TM933[电气工程—电力电子与电力传动]