基于DSP和FFT的三相无功功率测量  

Three-Phase Reactive Power Measurement Based on DSP and FFT

作　　者：公茂法[1] 林煜清 刘丙乾[1] 邱烽[1] 葛卉婷 杨宁霞[1] 

机构地区：[1]山东科技大学信息与电气工程学院,山东青岛266590

出　　处：《电测与仪表》2014年第14期75-78,共4页Electrical Measurement & Instrumentation

基　　金：山东省自然科学基金资助项目(ZR2012EEM021);山东省科技发展计划资助项目(2012G0020503)

摘　　要：介绍了一种基于DSP的电网三相无功功率测量系统,系统采用软件锁相对一个周期内的信号进行等间隔的采样,利用快速傅里叶算法计算无功功率等电量参数,为实时补偿无功功率提供依据。给出了系统相应的硬件设计电路和软件设计,经实际测量验证了系统的可行性和准确性。A three-phase reactive power measurement system based on DSP was introduced in this paper. The signals in one cycle were sampled at equal intervals by using the software phase-lock, and the FFT algorithm was adopted to calculate power parameters such as reactive power, which could provide the basis for the real-time reactive power compensation. The hardware circuit design and software design were given in this paper, and the feasibility and accuracy of the system were verified by actual measurements.

关 键 词：DSP 无功功率测量 软件锁相 快速傅里叶算法 

分 类 号：TM933[电气工程—电力电子与电力传动]