基于传感器封装和无线网络的光伏分布式采集研究  

Research on distributed photovoltaic acquisition based on sensor encapsulation and wireless network

作　　者：许苑 赵东元[2] XU Yuan;ZHAO Dongyuan(Guangzhou Power Supply Bureau,Guangdong Power Grid Co.,Ltd.,Guangzhou 510000,China;Tsinghua University,Beijing 100025,China)

机构地区：[1]广东电网有限公司广州供电局,广东广州510000 [2]清华大学,北京100025

出　　处：《粘接》2025年第4期25-28,共4页Adhesion

基　　金：南方电网广州供电局“广州超大型城市新型电力系统顶层设计”专项规划(项目编号:0301002022030301GH00062)。

摘　　要：为提高光伏分布式采集系统电流测量灵敏度,以Fe8OP13C7合金粉末和环氧树脂等原材料制备了磁致伸缩材料,并据此设计了一种磁致伸缩传感器,并结合NB-IoT无线通信技术,实现了光伏分布式采集系统高灵敏度的电流测量。试验结果表明,当Fe8OP13C7合金粒径为126μm,Fe8OP13C7合金与环氧树脂质量比为5∶1,且在磁致伸缩材料中加入永磁体时,制备得到的磁致伸缩材料的磁致伸缩性能最高,饱和磁致伸缩系数约为700με。相较于市售同类型传感器,本文所设计的传感器灵敏度更高,约为0.4με/A,测量范围更广,为0~600 A,且Fe8OP13C7合金用量更少、成本更低,可用于实际光伏分布式采集系统中。In order to improve the current measurement sensitivity of photovoltaic distributed acquisition system,a magnetostrictive material was prepared from raw materials such as Fe8OP13C7 alloy powder and epoxy resin,and a magnetostrictive sensor was designed accordingly.Combined with NB-IoT wireless communication technology,the high sensitivity current measurement of photovoltaic distributed acquisition system was realized.The experimental results show that when the particle size of Fe8OP13C7 alloy is 126μm,the mass ratio of Fe8OP13C7 alloy to epoxy resin is 5:1,and the permanent magnet is added to the magnetostrictive material,the magnetostrictive performance of the prepared magnetostrictive material is the highest,and the saturation magnetostrictive coefficient is about 700με.Compared with the same type of sensor on the market,the sensor designed in this paper has higher sensitivity,about 0.4με/A,a wider measurement range of 0~600 A,and less Fe8OP13C7 alloy consumption and lower cost,which can be used in the actual photovoltaic distributed acquisition system.

关 键 词：分布式光伏电站 电流传感器 硅胶 环氧树脂 

分 类 号：TQ433.438[化学工程] TM615.2[电气工程—电力系统及自动化]