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电力大数据:2024,27(1):-
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激光供电脉冲电场传感器设计
(贵州电网电力科学研究院)
Design of a laser-powered electric field sensor
王宇1,2,3,4,5,2,6,7,8
(1.Electric?2.Power?3.Research?4.Institute?5.Guizhou?6.Grid?7.Co.,?8.Ltd.)
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投稿时间:2024-04-09    修订日期:2024-04-15
中文摘要: 为解决复杂电磁环境中脉冲电场传感器的供电问题,设计制作了一种基于激光光电池供电的脉冲电场传感器,该传感器由激光光电池供电电路、电光转换电路和单极子天线构成。设计制作了采用恒流源电路驱动半导体激光器、光电池、来驱动构成的激光光电池供电电路,可将输入的特定波长的激光能量转换成电能提供给负载或者传感器端使用,从而能够实现远距离的非接触式供能。设计了一套系统标定设备,在一定空间内产生符合测试要求的电场。不同类型的传感器被安装在测试空间内,用来测量模拟器所产生的电场和磁场以及测试体内部电场、磁场等数据及波形,对电场传感器瞬态及稳定标定。测试结果显示,研制的脉冲电场传感器测量3dB带宽在20kHz~500MHz,动态范围100V/m~60kV/mm,负载阻抗125Ω,线性度优于10%,瞬态标定满足上升沿小于3.5ns。
Abstract:To address the power supply issues of pulse electric field sensors in complex electromagnetic environments, a pulse electric field sensor powered by laser photovoltaic cells was designed and fabricated. This sensor consists of a laser photovoltaic cell power supply circuit, an electro-optical conversion circuit, and a monopole antenna. A laser photovoltaic cell power supply circuit was designed and fabricated using a constant current source circuit to drive a semiconductor laser, photovoltaic cells, and other components. Laser-powered batteries can convert the input laser energy of specific wavelengths into electrical energy to provide power to loads or sensors at the receiver end, thereby achieving long-distance contactless power supply. Test results show that the developed pulse electric field sensor has a measurement ±3dB bandwidth of 20kHz to 500MHz, a dynamic range of 100V/m to 60kV/mm, a load impedance of 125Ω, linearity better than 10%, and transient calibration meeting rise time less than 3.5 ns.
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基金项目:中国南方电网股份有限公司创新项目
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