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发明公开
CN103840446A 一种用于变电站内通信设备电源骚扰抑制的电路 有权

一种用于变电站内通信设备电源骚扰抑制的电路
摘要：
本发明提供一种用于变电站内通信设备电源骚扰抑制的电路，该电路包括依次连接的瞬态过电压抑制电路（101）、稳态骚扰抑制电路（102）、二次骚扰抑制电路（103）以及骚扰吸收电路（104）；所述瞬态过电压抑制电路（101）包括气体放电管；所述稳态骚扰抑制电路（102）包括电源EMI滤波器；所述二次骚扰抑制电路（103）包括电压瞬变抑制晶闸管TVS；所述骚扰吸收电路（104）包括磁环电路；这种电路结构简单，价格低廉，既对瞬态骚扰进行抑制，又对稳态骚扰进行抑制；既对高频骚扰进行抑制，又对低频骚扰进行抑制；保证了通信设备电源的正常供电。
摘要（英）：

The invention provides a circuit used for communication device power source disturbance suppression in a transformer substation. The circuit comprises a transient overvoltage suppression circuit (101), a steady state disturbance suppression circuit (102), a secondary disturbance suppression circuit (103) and a disturbance absorption circuit (104) in a sequential connection mode. The transient overvoltage suppression circuit (101) comprises a gas discharge tube; the steady state disturbance suppression circuit (102) comprises a power source EMI filter; the secondary disturbance suppression circuit (103) comprises a voltage transient suppression thyristor TVS; the disturbance absorption circuit (104) comprises a magnet ring circuit. The circuit is simple in structure and low in cost and not only suppresses transient disturbance, but also suppresses steady state disturbance; the circuit not only suppresses high-frequency disturbance, but also suppresses low-frequency disturbance; normal power supply of a communication device power source is guaranteed.

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