物联网技术下的变电站通信分布式直流电源远程监控研究

Remote Monitoring of the Distributed Direct Current Power Supply for Substation Communication Based on the Internet of Things Technology

现有的监控方法存在较大的误差,因此对物联网技术下的变电站通信分布式直流电源远程监控进行研究。通过应用物联网技术与射频识别(Radio Frequency Identification,RFID)标签,数据采集速率大幅提高,传感器节点协同感知网络状态,并以多种报表形式呈现数据,清晰展示直流屏历史运行数据。在稳压电源中,采用直流分组放电法计算内阻值,监控单体电池的电压均衡性,并与设定的阈值比较,准确判断直流电源系统的实时运行状况,实现全面监控。测试结果表明,电池组的内阻值误差小于0.1%,放电容量与设定一致,确保电源电压和容量均衡,实现变电站的安全稳定运行。

The existing monitoring methods have large errors.Therefore,the remote monitoring of substation communication distributed direct current power supply under the Internet of things technology is studied.Through the application of Internet of things technology and Radio Frequency Identification(RFID)tags,the data collection rate has been greatly improved,and the sensor nodes cooperate to sense the network status,present the data in a variety of forms of reports,and clearly display the historical operation data of the direct current screen.In the regulated power supply,the direct current grouping discharge method is used to calculate the internal resistance value,monitor the voltage balance of the single battery,and compare with the set threshold to accurately judge the real-time operation status of the direct current power supply system,so as to achieve comprehensive monitoring.The test results show that the internal resistance error of the battery pack is less than 0.1%,the discharge capacity is consistent with the setting,ensuring the balance of power supply voltage and capacity,and realizing the safe and stable operation of the substation.