Design of Low Power Consumption OPC UA Protocol Conversion Minimum System for Heterogeneous Power Equipment Condition Monitoring
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摘要: 电力系统中不同厂家的现场设备接口各异,使得实际使用中现场设备很难被集成,形成一个信息孤岛。面向电力设备运行状态监测需求,结合当前电力装备普遍采用的Modbus RTU协议和各类PLC协议等为主要现场数据采集接口的现状,进行现有接口协议的OPC UA转换单元设计,研制异构电力设备OPC UA协议转换的嵌入式最小系统硬件平台,建立基于OPC UA协议标准化的统一输出接口。该硬件平台利用软件配置的方式实现现场数据采集智能设备统一接入,可高效支撑以OPC UA协议为输出的异构标准化跨平台运行,有利于同时支持更多不同种类采集终端云边协同参数采集的实现。
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关键词:
- 异构电力设备 /
- OPC UA转换单元 /
- 嵌入式最小系统 /
- 云边协同
Abstract: In the power system, different manufacturers have different field equipment interfaces, which forms information islands and makes it difficult to integrate field equipment in practice. According to the current data acquisition technology that Modbus RTU and various PLC protocols commonly used in power equipment, the OPC UA conversion unit of the existing interface protocol is designed based on the requirements of power equipment operation status monitoring, the embedded minimum system hardware platform for OPC UA protocol conversion of heterogeneous power equipment is developed, and a unified output interface based on OPC UA protocol standardization is established. The hardware platform uses software configuration to realize unified access of on-site data collection intelligent devices, which can efficiently support heterogeneous standardized cross platform operation with OPC UA protocol as output, and is conducive to support the realization of cloud side collaborative parameter collection of more different kinds of collection terminals at the same time. -
表 1 硬件参数需求表
主系统 CPU 工业级Cortex-Az8架构,600 MHz RAM 512 DDR3 SDRAM Flash 512 MB Flash 存储扩展 大容量SD存储卡,最大64 GB 网络接口 LAN 10/100 Mbps自适应,RJ45 隔离保护 15 kV 空气放电及 8 kV 接触放电保护 串行接口 标准 RS485(DATA+、DATA-、GND)、RS232(TXD、RXD、GND) 光电隔离 每通道独立光电隔离 串口保护 所有信号线均提供 15 kV ESD 流向控制 RS485自动数据流向控制 电源需求 电源输入 9~30 VDC,推荐使用24 VDC 系统功耗 <10 W -
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