基于光学电流互感器的电路信号传输技术  

Circuit Signal Transmission Technology Based on Optical Current Transformer

作　　者：黄灿英 HUANG Canying(Jiangxi College of Construction,Nanchang 330052,China)

机构地区：[1]江西建设职业技术学院,江西南昌330052

出　　处：《通信电源技术》2021年第18期62-64,共3页Telecom Power Technology

摘　　要：在电流传感器中易出现线性范围窄和频带不足等缺陷,影响电网的运行和电流信号的传输。为此,研究基于光学电流互感器的电路信号传输技术。运用双光路检测法检测电路信号,将光信号转换为电信号,有效抑制光源波动对信号检测的影响。通过平衡式差分法处理信号干扰,基于光学点电流互感器,利用其差动保护性能保护电路信号传输。通过实验结果表明,所提方法制动能力更好,灵敏性更强,电路发生故障时能够有效保证在电路信号传输中差动保护的不误动,更利于电路信号传输。In the current sensor,there are defects such as narrow linear range and insufficient frequency band,which affect the operation of power grid and the transmission of current signals.Therefore,the circuit signal transmission technology based on optical current transformer is studied.The circuit signal is detected by double light path detection method,and the optical signal is converted into electrical signal,which effectively suppresses the influence of light source fluctuation on signal detection.The balanced differential method is used to deal with signal interference.Based on optical point current transformer,its differential protection performance is used to protect circuit signal transmission.The experimental results show that this method has better braking ability and stronger sensitivity.When the circuit fails,the method in this paper can effectively ensure that the differential protection does not malfunction in the circuit signal transmission,which is more conducive to the circuit signal transmission.

关 键 词：光学电流互感器 信号传输 电流互感器 差动保护 

分 类 号：TN9[电子电信—信息与通信工程]