无功补偿装置中智能型复合开关的研究

Study on Intelligent Compound Switch for Reactive Power Compensation Device

介绍一种用于低压无功补偿装置中的智能型复合开关,它采用双向晶闸管与磁保持继电器并联的工作结构。当电压过零时触发晶闸管,电流为零时关断晶闸管。充分利用了无触头开关动作可靠、磁保持继电器损耗小的特点,使复合开关具有无涌流、无噪声、无电弧重燃、功耗小及动作可靠的优点。

A kind of intelligent compound switch using for reactive power compensation of low voltage, using a parallel structure of bidirectional silicon-controlled and magnetic latching relay was introduced. Triggering silicon- controlled when zero-point voltage is passing and turning-off it when current is equal to zero and utilizing the charac- teristic of reliability of contactless switch and low consumption of magnetic latching relay. The compound switch with the advantage of no current surge, no noise, no arc afterburning, low consumption and reliable actuation is preslented.