摘要
对现代建筑供电电能质量现状作了调查研究,分析了产生供电电能质量问题的原因,并给出了具体的措施。建筑供电的质量问题主要是谐波,电压波形一般是接近正弦的,但电流波形畸变较严重,且电流中含有大量3次、5次谐波,偶次谐波很小,甚至可以忽略;中性线上的电流主要是3次谐波电流。高压侧的背景谐波畸变水平一般比较低,能满足谐波国标的要求。
The present situation of power quality in building power supply was investigated and studied.The reason about the power quality problems in building power supply was analyzed,and the solve measurements were given.The results indicated that the main problem is harmonic wave.The voltage waveform is similar to the sinusoid,but the current waveform distort seriously,and there are a lot of third harmonic and fifth harmonic.The main electrical current in neutral line is third harmonic,and the even harmonic can be ignored.The level of background harmonic distortion is lower,that can meet the requirement of international standard.
出处
《现代建筑电气》
2011年第6期1-4,15,共5页
Modern Architecture Electric
关键词
现代建筑供电
电能质量
谐波
波形畸变
国家标准
modern building
power supply
power quality
harmonic
wave distort
national standard
