基于通信协议多元接入的计量自动化远程控制研究

Research on Remote Control of Metrology Automation Based on Multi － source Access of Communication Protocol

摘要:

广西电网计量自动化“两覆盖”工作中需对多种通信协议设备并存的复合网络进行远程控制，应用时常出现 电能表拉合闸失败的问题。首先分析了广西电网常见的电表和计量终端通信协议的特点，然后从广西 97 规约电能表 “先告警后控制”控制机制与南方电网公司规约电能表的差异性，以及费控体系安全防护要求等方面分析了多元接入 条件下计量终端对电能表远程控制方案的可行性，并据此给出了推荐控制方案和流程。接着通过实例分析了不同集 中器和载波通信模块厂家拉闸平均响应时间的特点和差异，最后对计量主站远程控制功能调试时发现的安全认证失 败等常见异常问题进行了上下行通讯报文的实例分析，为计量自动化系统远程费控功能开发提供经验。

Abstract:

Aiming at the problems existing in the application of remote control function in the " two coverage" work of metering automation in Guangxi power grid，three kinds of electric energy meters and two types of communication protocols for metering terminals commonly used in the field application of Guangxi power grid are firstly introduced． And then，from the aspects pf the compatibility of equipment communication protocols，the difference of " alarm before pull" control mechanism of Guangxi 97 protocol electric energy meter，and the security protection requirements of fee control system，the feasibility of remote control scheme for watt － hour meter by metering terminal is analyzed，and the recommended scheme and the switching － on process are given accordingly． The characteristics and difference of average response time between different communication modules and concentrator manufacturers are analyzed by testing． In addition，when commissioning the communication protocol of remote control function of the metering master station，the common abnormal problems found are analyzed with examples of upstream and downstream． It can provide experiences for the development of remote cost control function of metering automation system．