建筑设备物联网平台下谐波监测系统的设计与实现

摘要

建筑内的各种用电设备使得配电系统的电压及电流畸变越来越严重,因此有必要对建筑配电系统的谐波进行监测.应用无线网络技术和以太网技术将分布于建筑内的多个谐波监测终端接入互联网,并应用Web技术对谐波数据进行管理,从而构造一个基于建筑设备物联网的分布式谐波在线监测系统.通过应用实例验证了该系统可对多个回路或设备的谐波信息进行在线监控,也可以通过浏览器查看谐波畸变率柱形图、曲线图以及越限报警事项.与采用离线测量或集中式在线测量的系统相比,该系统可以随时随地通过互联网监测建筑内的谐波状况,而且可以实现较大容量的数据存储、更美观的界面和更方便的远程操作.%It is necessary to monitor the harmonics of power distribution system in buildings because the distortion of voltage and current is getting increasingly worse along with the use of all kinds of electrical equipment in the buildings.To develop a distributed harmonic online monitoring system based on Internet of Things for building equipment,the technologies of wireless network and ethernet are applied to connect various harmonic monitoring terminals spreading in buildings into intemet,and the Web technologies are used to manage the harmonic data.It is illustrated through actual application instance that this system can monitor the harmonics information of multiple circuits or electrical equipment online,and can view on Web browsers the histograms,curves and alert events of harmonic distortion rate as well.Differing from other offline detecting instruments or centralised online monitoring systems,this system is able to monitor the harmonics situation inside the buildings through internet at anytime and in anywhere,and can achieve data storage with higher capacity,more beautiful interface and more convenient remote operation.