摘要
电力系统的谐波是影响电能质量的重要因素,谐波对电力系统和用电设备产生了严重危害和影响。文中针对现有电网谐波表对谐波检测实时性不高和精度低的问题,提出一种基于Nios Ⅱ软核和FFT IP核为核心的电网谐波表的设计方法。设计中FFT IP核、键盘、显示等模块通过用户自定义外设组件的形式添加到SOPC Builder中,同时通过Avalon-ST总线有效地把FFT IP核与Nios Ⅱ软核处理器有机地结合起来,实现控制灵活、高速实时的电网谐波表。该设计已在Al-tera芯片EP2C35F672C6上进行实现,能够满足100MHz的系统时钟,提高了实时性。
Harmonic is an important influence of power quality in power system,for it is harmful to the power system and power equip- ments. A technique for realizing harmonic measurement based on the Nios Ⅱ which makes use of Nios Ⅱ soft-core processor to obtain the real-time measurement and analysis is presented to solve the problem of low speed and low accuracy of harmonic measurement system in existence. Through the Avalon-ST bus effectively combined the FFT 1P core and Nios II soft-core,greatly improving the system process- ing speed and efficiency and achieving a flexible, high-speed real-time control of the electrical network parameter monitoring system. This design has carried on the timing simulation on Altera chip EP2C35F672C6, can satisfy 100MHz system clock, improve the real- time.
出处
《计算机技术与发展》
2012年第7期219-222,226,共5页
Computer Technology and Development
基金
南京邮电大学青蓝计划资助项目(NY210036)
