文章对JJG 1192-2023《电动汽车非车载充电机校验仪检定规程》进行解读,介绍了规程中部分技术指标的确定过程和依据,对规程中技术指标和检定方法进行了解释和说明,对校验仪检定过程中需注意的问题进行了阐明,便于计量检定人员加深对该规程的理解,正确执行规程.

针对充电桩现场测试设备的充电需求与实际输出不一致,出现电压、电流不匹配的问题,设计了一套检测方案,构建出包括电流检测模块、电压检测模块和示波器检测模块的检测电路,通过采样电压和电流信号,计算出不同负载下充电桩输出电流和电压值,并设计了包括直流电能采集电路,由双通道AD转换AD7380、可编程增益放大器、可编程增益放大器、增益电阻Rg2和电源变换器、低通滤波器电容CL、低通滤波器电阻RL组成的检测电路,在检测电路中,为了提高检测效率,还设置了校正电路.通过试验,本研究方法分析直观,误差低.

电动汽车交流充电桩校验仪、电动汽车直流充电机校验仪是电动汽车充电桩/机的计量标准器,其准确可靠可为强检计量器具电动汽车充电桩/机的量值提供保证.通过对国内电动汽车充电桩/机校验仪的长期全面测试和理论研究,较全面掌握了电动汽车充电桩/机校验仪的生产水平和质量状态,在大量实际数据的支撑下,对最小电流、温度系数、失真度、纹波等进行了溯源研究,掌握了关键参数值和检测方法,为相关国家规程的编写打下坚实基础.

为解决电动汽车充电桩强检难题,山东省市场监管局创新提出"首次检定+在线监测+失准复检"的计量监测方案,通过在桩内安装实时监测模块实现对电动汽车充电桩的在线监测、智慧监管.本文介绍了计量监测方案的工作原理、主要优点和试点应用情况,并对电动汽车充电桩强检工作提出合理化建议.

对电子式电能表进行EMS测试,需要开展如电快速瞬变脉冲群抗扰度、射频电磁场感应的传导骚扰抗扰度、传导抗扰度等试验,电能表检定装置受干扰甚至不能正常工作.针对以上问题,设计了一种宽频率电压去耦网络、电流去耦电路和非接触式误差模块,提出了一种抑制EMS试验中干扰信号的方法,应用共模高频LC去耦电路、共模中频LC去耦电路、差模LC去耦电路、二级共模高频LC去耦电路,提高电能表检定装置的电压线路、电流回路、辅助信号线路抗干扰能力,使得电能表检定装置在强干扰环境中能稳定输出.试验结果表明,采取该综合去耦网络后,电能表检定装置的EMS抗干扰能力得到显著提高.

According to the European Union in the MID certification of watt-hour meter calibration requirement of un-certainty evaluation of measurement results , and combining with OIML R 46 international advice , this paper analyzed the starting current sources of uncertainty in detail , and offers the real example of typical uncertainty when starting current , it showed the MID certification to the uncertainty evaluation and analysis on a method .

Insulation resistance meter is divided into two kinds of pointer and electronic type, the production of about 80%is a pointer type, the table detection need manual reading, error and time consuming. Insulation resistance meter is included in the national strong inspection directory, the accuracy of its measurement results are related to the safety of thousands of households. This thesis has designed a new testing equipment in response to this phenomenon, the equip-ment through computer and supporting camera read pointer type insulation resistance meter indication, and automatic and standard value of alignment error is calculated. In the process of detection of insulation resistance meter only needs to provide the standard value, do not adjust its resistance value, and. The design and implementation of the device to achieve the automatic reading and error calculation, greatly improving the detection efficiency.

Aiming at the key problems in the shandong province electricity measurement than do the theory analysis, including the determination of stability of the reference standard, the problem of three-phase three-wire zero processing, calculation method for class A uncertainty analysis method, comparing the results, and treatment scheme is expounded in detail. Provide reliability assurance for measuring than implementation, the problems in the contrast to provide practical solutions.

The verification and calibration of verification equipment for AC electrical energy meters was the focus of electrical energy metrology. The verification and calibration with artificial manual operation have not been adapted to the development of metrological services. In order to realize automatic operation and improving the quality, the efficiency and the level of verification, a research on design and application of the automatic system was carried out. Firstly, the necessary components of System were chosen according to items and their requirements in national regulation. Secondly, relevant software was developed according to hardware. Adopting modular programming method, this software used VB6.0 as platform, which was widely used to make software interface. The system was proved to achieve design requirements after application.

本文通过整体检定高压计量箱,发现在不平衡状态下误差超差现象；通过分析,得出由于铁质外壳的导磁性,使得一次电流回路中产生感应电流,由此导致误差超差；通过更换磁导率较小的不锈钢外壳,感应电流大大减小,误差也符合相应要求,取得满意效果.