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发明公开
CN109270419A 一种高电位晶闸管的检测装置的供能装置及检测系统 无效 - 驳回

一种高电位晶闸管的检测装置的供能装置及检测系统
摘要：
本发明涉及一种高电位晶闸管的检测装置的供能装置及检测系统，供能装置包括隔离变压器以及电压处理电路；隔离变压器的一次侧绕组用于串设在高电位晶闸管两端的RC阻尼支路中，隔离变压器的二次侧绕组连接电压处理电路的输入端，电压处理电路的输出端用于供能连接高电位晶闸的检测装置。本发明采用隔离变压器从高电位晶闸管两端并联的RC阻尼支路中取能，并将取得的电能经过电压处理电路处理后给高电位晶闸管的检测装置供电，从而实现了检测装置的供电电源与高电位一次元件的电气隔离，并且采用隔离电流互感器通过晶闸管本身并联的RC阻尼电路中的电流取电，不会改变晶闸管的并联阻抗，有效避免了由于晶闸管电压分布不平衡而导致高压击穿的现象。
摘要（英）：

The invention relates to an energy supply device for a detection device of a high-potential thyristor and a detection system. The energy supply device comprises an isolation transformer and a voltageprocessing circuit, wherein a primary-side winding of the isolation transformer is used for being connected in series with RC damping branches at two ends of the high-potential thyristor, a secondary-side winding of the isolation transformer is connected with an input of the voltage processing circuit, an output end of the voltage processing circuit is used for being connected with the detection device of the high-potential thyristor in an energy supply way. The isolation transformer is used for taking energy from the RC damping branches connected in parallel with the two ends of the high-potential thyristor, the taken electric energy is processed by the voltage processing circuit and then is supplied to the detection device of the high-potential thyristor, so that electrical isolation between a power supply of the detection device and a high-potential primary component is achieved, power is taken from currents in the RC damping circuits connected in parallel of the thyristor by the isolation current transformer, the parallel impedance of the thyristor is not changed, and a high-voltage breakdown phenomenon caused by voltage distribution unbalance of the thyristor is effectively prevented.

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