摘要
现代变频器电力电子产品的广泛应用,导致大量谐波电流流入电网,引起电网电压波动和闪变,造成系统电压波形严重畸变,影响系统用电设备的正常运行,严重时引起系统谐振烧毁电气设备,引发电气事故,造成巨大的经济损失,这就使得含有变频器的供配电系统无功补偿问题变得更加复杂。因此,电气设计人员必须掌握供配电系统采用变频器后功率因数的变化机理,才能合理高效地解决其无功功率补偿问题,以使设计更加安全可靠、经济实用。
The widely application of electronics products will cause great harmonic current in the power system,lead to voltage fluctuation,distortion of system voltage waveform,affection of normal operation of system equipment.Seriously,it can burn equipment,cause accident and great economy loss.This will make reactive compensation of distribution system with transducer more complex.The designer should grasp the transformation mechanism of power factors to solve reactive power compensation problems to ensure safety and economy design.
出处
《林业科技情报》
2012年第3期63-65,共3页
Forestry Science and Technology Information
关键词
变频器
功率因数
无功补偿
transducer
power factor
reactive compensation
