常刚

[摘    要]通过网络自动化计量终端设备的过电压入侵，分析了网络自动化计量终端设备的过电压保护现状，研究了网络自动化计量终端设备的过电压保护对策。文章主要选择在计量终端设备正前方安装更多的过电压安全保护设备，研究和改进计量终端设备的串并联传统合作接线盒，并在传统合作接线盒的基础上改进过电压安全保护。该处理方案可对开关电源线路的安全通道、数据信号安全通道和意见反馈提供过压安全保护，可有效保证计量终端设备电磁能表的正常运行，降低电力工程维护成本，防止用电损坏。

[关键词]计量终端设备;过电压防护;电能计量

[中图分类号]TM933.4 [文献标志码]A [文章编号]2095–6487（2021）12–00–02

Overvoltage Protection Measures for Distribution

Network Automation Metering Terminals

Chang Gang

[Abstract]Through the overvoltage intrusion of network automation metering terminal equipment， the current situation of overvoltage protection of network automation metering terminal equipment is analyzed， and the overvoltage protection countermeasures of network automation metering terminal equipment are studied. This countermeasure mainly chooses to install more overvoltage safety protection equipment directly in front of the metering terminal equipment. Research and improve the series-parallel traditional cooperative junction box of metering terminal equipment， and improve the overvoltage safety protection on the basis of the traditional cooperative junction box. The processing scheme can provide overvoltage protection for the safety channel of the switching power supply circuit， the data signal safety channel and the feedback， which can effectively ensure the normal operation of the electromagnetic energy meter of the metering terminal equipment， reduce the maintenance cost of the power project， and prevent electricity damage.

[Keywords]metering terminal equipment; overvoltage protection; electric energy metering

配电网是所有电力工程系统的终端设备。它直接面向终端设备用户。对供电稳定性和供电质量的要求越来越高。电力工程是人们日常生活中不可缺少的能源。供电是否可靠也成为讨论的话题。在这种情况下，电磁能配电网的自动化技术需要不断改进，使人们满足供电的稳定性。现有的配电网稳定性评价方法不能正确评价配电网自动化技术对供电稳定性的影响。配电网自动化技术对配电网供电稳定性的提高主要体现在故障处理的各个阶段，减少了相应故障处理步骤的时间，或实现了部分故障处理步骤的自动化。例如，全自动故障定位技术缩短了故障定位时间，电源开关设备的远程控制操作缩短了故障保护、网络重构和恢复的时间，同轴电缆自动化技术实现故障保护，恢复供电过程的自动化。……