CAJ | 학술논문

在电力系统谐波分析中,模数转换（ADC）电路是影响系统检测性能的主要环节之一。基于NiosⅡ的谐波分析系统具有逻辑控制能力强、信号处理实时性高、系统抗干扰能力强等特点。以Altera公司的DE2开发板为平台,实现了采样电路的硬件设计;在QuartusⅡ中用Verilog HDL语言完成了与NiosⅡ的接口设计,并引入具有强实时性和抢占式多任务的嵌入式操作系统μC/OS-Ⅱ作为操作平台、采用快速傅立叶变换（FFT）的谐波检测方法、通过μC/OS-Ⅱ在NiosⅡ上的移植可以使得系统的稳定性和实时性有很大的改善,从而使得谐波测量更加精确。
재전력계통해파분석중,모수전환（ADC）전로시영향계통검측성능적주요배절지일。기우NiosⅡ적해파분석계통구유라집공제능력강、신호처리실시성고、계통항간우능력강등특점。이Altera공사적DE2개발판위평태,실현료채양전로적경건설계;재QuartusⅡ중용Verilog HDL어언완성료여NiosⅡ적접구설계,병인입구유강실시성화창점식다임무적감입식조작계통μC/OS-Ⅱ작위조작평태、채용쾌속부립협변환（FFT）적해파검측방법、통과μC/OS-Ⅱ재NiosⅡ상적이식가이사득계통적은정성화실시성유흔대적개선,종이사득해파측량경가정학。
In analysis of power system harmonic, analog-to-digital converter (ADC) circuit is one of the main links which affect detection performance of system. NiosⅡ-based harmonic analysis system has features of good logic control ability, high real-time of signal processing, strong anti-interference ability, etc. Hardware design of sampling circuit is realized with the platform of Altera' s DE2 board. Quartus Ⅱ used in the Verilog HDL language to complete the interface with the NiosII design, and introduces a strong real- time and preemptive multitasking embedded operating system μ C/OS-Ⅱ as an operating platform, using the harmonic detection method of Fast Fourier Transform (FFT), and by the transplant of μ C/OS-Ⅱ on the NiosII can greatly improve the system' s stability and real-time, thus to make the measurement of harmonics more accurate.