一种用于关口电能计量装置远程校验的多路模拟采集器的研制

关口电能计量装置周期校验常采用人工现场校验的工作模式，存在工作量大、效率低、安全风险高等问题，本文介绍了一种用于关口电能计量装置远程校验的多路模拟采集器的研制方法，采用高精度穿心式CT、高精度A/D采集电路、CPU处理单元、载波通信单元及时钟电路等部件，运用基于频率自适应的移窗补偿准同步算法进行电参数计算，能够实现电能表端电参量的精确测量，测量精度优于0.05%RD，能够采集电能表功率脉冲、PT端及CT端监测数据，配合主站管理平台能够实现电能表、PT二次压降及互感器二次负载的远程校验、在线监测等多种应用。研究内容在推进关口电能计量装置状态巡检、保证作业人员安全、提高关口运行管理水平等方面有着重要的促进作用，确保了关口计量的准确性和电力贸易双方的公平公正。

Development of a Multi-channel Analog Collector for Remote Calibration of Gateway Electric Energy Metering Device

The periodic calibration of the gateway electrical energy metering device usually adopts the manual on-site calibration mode, which has the disadvantages of large workload, low efficiency and high safety risk. This paper introduces a method for developing multi-channel analog collector for remote calibration of gateway electrical energy metering device. It adopts high-precision thread-through CT, high-precision A/D acquisition circuit, CPU processing unit, carrier communication unit and clock circuit. The collector uses the frequency adaptive adaptive window shifting compensation quasi-synchronization algorithm to calculate the electrical parameters, which can accurately measure the electrical parameters of the energy meter. The measurement accuracy is better than 0.05% RD. It can also collect the electrical power pulse, PT and CT terminal monitoring data. Combined with the main station management platform, it can realize various applications such as electric energy meter, PT secondary voltage drop and remote calibration of transformer secondary load, online monitoring. The research content has played an important role in promoting the state inspection of the gate energy metering device, ensuring the safety of operators, and improving the level of operation and management of the gates, ensuring the accuracy of the gate measurement and the fairness of both parties.