谐波和无功是电力系统中电能质量的两个重要指标,因电力电子设备的大量应用,谐波问题和无功问题日益严重,造成电网功率损失加大和设备故障事故频发,给电网的安全稳定运行带来严重危害。因此,由能快速连续补偿谐波无功的有源电力滤波器(APF)和具有无功补偿容量大且成本低的晶闸管投切电容器(TSC)组成的混合补偿系统(Hybrid system of TSC and APF,TAPF),在电能质量治理中得到较广
Characteristics of a single-feed dual-frequency bow-tie microstrip antenna are studied. By using the variation method, simple formulas for resonant frequencies