摘要
当前对直流电能表的检定忽略了功率的动态变化对计量结果的影响,缺少非理想直流电能计量标准。为此,提出一种使用脉冲虚功率源检定直流电能表的方法,该法通过将脉冲虚功率施加给被检表对比输出电能和被检表测得电能得到误差,且实现了输出电能的量值溯源,基于该法研制校验装置样机,通过检定和实验计算出了仪器输出电能的误差,并对市面上现有直流电能表进行测试,结合测试结果和算法仿真结果分析了动态变化功率对直流电能计量的影响。结果表明,脉冲虚功率源法能够用于建立直流电能计量标准,实现动态变化功率下直流电能表的检定。
The current verification of DC energy meters ignores the impact of dynamic changes in power on the measurement results,and lacks DC energy metering standards under non-ideal conditions.For this reason,proposed a method of using pulse virtual power source to calibrate DC electric energy meters.This method applies pulsed virtual power to the tested meter,and obtains the error by comparing the output electric energy with the electric energy measured by the tested meter.It realizes the traceability of the value of the output electric energy.Based on this method,developed a calibration device,and calculated the error of the instrument’s output energy through verification and experiments.Using this device to test the existing DC electric energy meters on the market,and the influence of the dynamic change of power on the DC electric energy measurement is analyzed by combining the test results and the algorithm simulation results.The results show that the pulse virtual power source method can be used to establish DC electric energy metering standards and realize the verification of DC electric energy meters under dynamic power changes.
作者
马烨
宋晓林
孙刚
曹刘炎
曾翔君
Ma Ye;Song Xiaolin;Sun Gang;Cao Liuyan;Zeng Xiangjun(State Grid Shaanxi Marketing Service Center(Metrology Center),Xi'an 710054,China;School of Electrical Engineering,Xi′an Jiaotong University,Xi'an 710049,China)
出处
《电子测量与仪器学报》
CSCD
北大核心
2021年第12期189-197,共9页
Journal of Electronic Measurement and Instrumentation
关键词
直流电能计量
动态变化功率
脉冲虚功率
误差
DC energy metering
dynamically changing power
pulse virtual power
error
作者简介
马烨,2012年于西安交通大学获得学士学位,2015年于西安交通大学获得硕士学位,现为国网陕西省电力公司营销服务中心(计量中心)工程师,主要研究方向为电能计量标准技术。E-mail:379935474@qq.com;通信作者:曹刘炎,2018年于西安交通大学获得学士学位,现为西安交通大学硕士研究生,主要研究方向为仪器仪表技术与电能计量。E-mail:caoliuyan@stu.xjtu.edu.cn。
