摘要
随着电力系统的发展以及非线性电力器件的大量应用,电网中的谐波状况变得更为复杂,非整数次谐波分量———间谐波和次谐波变得较为突出。介绍了一台自主开发的基于DSP的单三相间谐波检测装置,该装置可以实时准确地检测出间谐波以及整数次谐波。针对装置检测精度的要求,对检测装置进行误差分析及处理,使得装置总误差降到5%以下,测量精度满足国标《电能质量:公用电网谐波》(GB/T14549—1993)中规定的B级谐波测量仪的要求。
With the development of electric power system and the wide application of nonlinear equipments or devices, the harmonies in the power networks are becoming more and more complicated, the inter-harmonic and hypo-harmonie problem are more severely. A single and three-phase inter-harmonies detecting device based on DSP is introduced. The main characteristic of this device is that it can detect both integral and fractional harmonies. In order to meet the request of the detecting precision, the errors of the detection were analyzed and adjusted, and as a result the entire error of the detecting device drop to the level of 5%, which suits to the GB/T14549-93 class B standard for the harmonies detection.
出处
《电气应用》
北大核心
2007年第9期96-101,共6页
Electrotechnical Application
关键词
间谐波
广义dk-qk坐标变换
误差分析
误差校正
fractional harmonic generalized dk-qk coordinate transform error analysis error emendation.
