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根据美国电力科学研究院的一项关于电能质量的粗略估计,认为当今和电能质量相关的问题在美国每年造成的损失高达260亿美元。随着楼宇、场馆智能化、绿色化的不断升级,数量众多的计算机、变频空调、LED电源、UPS电源、变频器及弱电控制终端设备应用于配电系统内,大量的非线性负荷导致电压、电流谐波严重畸变、功率因数低。国家标准也提倡对建筑核心用电部分采用有源滤波器消除系统谐波,APF2000有
According to a rough estimate of power quality at the American Electric Power Research Institute, current issues related to power quality are up to $ 26 billion annually in the United States. With the intelligent buildings, venues, escalating green, a large number of computers, inverter air conditioner, LED power supply, UPS power supply, inverter and weak control terminal equipment used in distribution systems, a large number of non-linear load voltage, Current harmonic serious distortion, low power factor. National standards also advocate the use of active filters on the core of the building to eliminate system harmonics, APF2000