基于小波变换的并联型电能质量控制器  

Parallel Power Quality Controller Based on Wavelet Transform

作　　者：任永峰[1] 李含善[1] 赵卫东[1] 丁海波[1] 

机构地区：[1]内蒙古工业大学信息工程学院,呼和浩特010051

出　　处：《电力系统及其自动化学报》2006年第5期21-24,78,共5页Proceedings of the CSU-EPSA

基　　金：兰太-工大科技创新基金研究项目(LTGDJCX2005001);内蒙古自治区高等学校科研项目(NJ05050);内蒙古工业大学重点研究项目(ZD200413)

摘　　要：阐述了并联型电能质量控制器的运行机理和谐波抑制方法,提出了一种基于小波变换的并联型电能质量控制器的谐波检测方法,并利用重构技术进行了谐波补偿,还对基于小波变换和瞬时无功功率理论的两种谐波检测方法进行了对比研究。研究表明基于小波变换的检测方法实时性好。并联型电能质量控制器投入系统后电源电流总畸变率由26.94%下降为5.64%,表明并联型电能质量控制器可对电力系统中的谐波电流进行较好的补偿。The principle and harmonic elimination method of parallel power quality controller are discussed in this paper. A novel harmonic detecting approach based on wavelet transform is proposed, the reconstructed technology is applied to harmonic compensation. Two harmonic detecting methods using wavelet transform and instantaneous reactive power theory are studied respectively, and the results show that the wavelet transform based method·has better performance on real-time aspect. The total harmonic distortion of current is reduced from 26.94% to 5.64% after PPQC is put into operation, which proves its effectiveness.

关 键 词：小波变换 瞬时无功功率理论 并联型电能质量控制器 谐波检测 

分 类 号：TM748[电气工程—电力系统及自动化]