基于Park变换的UPQC检测方法研究.pdfVIP

№1 电力科学与工程 2005 　　　　　　　　　　　　　ELECTRIC POWER SCIENCE AND ENGINEERING ·17 · ( ) 文章编号 2005 基于 Park 变换的UPQC 检测方法研究 梅慧楠 ,朱中华 ,程时杰 (华中科技大学 电气与电子工程学院 ,湖北 武汉 430074) Detection Method of Unified Power Quality Conditioner Based on Park Transformation MEI Huinan , ZHU Zhonghua , CHENG Shijie ( ) Huazhong University of Science and Technology , Wuhan 430074 , China Abstract :The Unified Power Quality Conditioner is a kind of compos 变时 ,单独的串联 APF 和并联 APF 都难以达到理想 itive compensation equipment combining the series active power filter 的补偿效果[3 ] 。而 日本学者 Akagi 在 1996 年首次提 and parallel active filter. This paper introduces its function and sys 出的由串并联有源滤波器整合起来所构成的统一电 tem configuration , and analyzes the difference of detecting method be 能质量调节器 UPQC (Unified Power Quality Condition tween UPQC and alone active power filters. This paper also presents [4 ] er) ,则不仅可以补偿由非线性负载产生的谐波 、无 an improved detecting method based on instantaneous reactive power 功 、负序电流 ,还可以调节负载端电压为幅值一定的 theory. In this method , by using Park transformation , the peak am plitude and phase of positive basic frequency voltage are detected sep 三相对称电压 ,具有综合的电能质量调节功能[5 ] ,被 arately from unbalanced and distorted voltage in the series portion of 公认为是极有发展前途的一种装置 ,也得到了广泛深 UPQC , and the current reference of parallel portion of UPQC is deter 入的研究 。 mined by the detection of serie