CAJ | 학술논문

电网谐波污染日益严重,有源电力滤波器作为谐波抑制的理想解决方案受到广泛的关注.谐波电流的检测性能很大程度上影响有源电力滤波器的补偿效果.根据谐波检测方法依据的理论不同,分为基于功率定义和数字信号处理技术两大类.基于功率定义的谐波检测方法有基于Fryze功率定义、瞬时无功功率理论、同步旋转坐标系、直流侧电压控制等;基于数字信号处理技术的谐波检测方法有基于傅利叶变换、广义积分器、Prony/Kalman估计、小波/S变换、神经网络/自适应滤波.文章详细时谐波检测方法进行归类总结和比较分析,指出了各自的优缺点和适用范围.
전망해파오염일익엄중,유원전력려파기작위해파억제적이상해결방안수도엄범적관주.해파전류적검측성능흔대정도상영향유원전력려파기적보상효과.근거해파검측방법의거적이론불동,분위기우공솔정의화수자신호처리기술량대류.기우공솔정의적해파검측방법유기우Fryze공솔정의、순시무공공솔이론、동보선전좌표계、직류측전압공제등;기우수자신호처리기술적해파검측방법유기우부리협변환、엄의적분기、Prony/Kalman고계、소파/S변환、신경망락/자괄응려파.문장상세시해파검측방법진행귀류총결화비교분석,지출료각자적우결점화괄용범위.
Harmonic quality of power network has increasingly deteriorated. The use of active filtering techniques, which is effective for harmonic suppression, has become more attractive. One of the key points for proper implementation of an APF is to use a reliable method for current/voltage reference generation. Harmonic detection methods are divided into two categories, based on power definition and digital signal process theories. The power definition theories include Fryze power definition, instantaneous reactive power, synchronous rotating coordinate system, voltage-controlled DC, etc. The digital signal process theories include Fourier transform, generalized integrator, Prony/Kalma estimation, wavelet/S trans-form, neural network/adaptive filtering, etc. This article gives a survey of the commonly used methods for harmonic detec-tion in active power filters, and presents their advantages, disadvantages and application scope respectively.