低压配电网电力线高速数据通信电容宽带耦合装置

Low-voltage distributing grid power line high-speed data communication capacitive broadband coupling device

Abstract

The utility model provides a power line channel coupling device which comprises a transmission transformer (T1), a coupling capacity (C1) and transient state check diodes (D1 and D2); the transmission transformer (T1) is provided with a magnetic core, a primary coil and a secondary coil which are winded on the magnetic core; the secondary coil is connected to modulation-demodulation equipment (2); the primary coil is connected to the positive and negative poles of the transient state check diodes (D1 and D2); the positive and negative poles of the transient state check diodes (D1 and D2) are oppositely connected in series between the two ends of the transmission transformer T1; one end of the transient state check diodes (D1 and D2) connected in series are connected with one end of the coupling capacity (C1), and the other end of the transient state check diodes (D1 and D2) connected in series are connect to the other power line; the coupling device has the advantages of wideband range, lowest passband attenuation, favorable impedance setting, favorable linear phase-frequency characteristics, lower time delay characteristics and higher reliability.
本实用新型提供一种电力线信道耦合装置,其中包括传输变量器(T1)、耦合电容(C1)、瞬态抑止二级管(D1和D2);所述传输变量器(T1)具有磁芯和缠绕在磁芯上的初级线圈和次级线圈,所述次级线圈连接到调制解调设备(2),其初级线圈连接两个瞬态抑止二级管(D1和D2)的正负极,该瞬态抑止二级管(D1和D2)正负极相反地并联在传输变量器T1的初级线圈的两端之间,该并联的瞬态抑止二级管(D1和D2)的一端与耦合电容(C1)的一端相连接,而另一端与一条电力线相连接;所述耦合电容(C1)的另一端连接到另一条电力线。所述耦合装置具有宽频范围、极低的通带衰减、良好的阻抗整定、良好的线性相频特性和较低时延特性以及较高安全性的优点。

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