交流电器选相分合闸的控制技术  

Control Technology of Phase Selection of AC Electrical Apparatus

作　　者：陈培颖[1] 杜太行[1] 弭艳芝[1] 刘鑫[1] 

机构地区：[1]河北工业大学电气与自动化学院,天津300130

出　　处：《低压电器》2004年第4期25-28,共4页Low Voltage Apparatus

摘　　要：介绍了一种基于快速傅立叶变换(FFT)的交流电器选相分合闸技术的原理及实现方法。它能够较精确地计算电网电压的实际频率,提高移相延时时间测算的准确度。在实现上,介绍了断路器瞬动特性检测柜中的选相分闸装置,其以单片机为核心,操作简便、计算快速。AC electrical apparatus phase selection' s principle based on FFT (Fast Fourier Transform Algorithm) was introduced. The FFT can calculate the actual frequency of voltage and enhance the precision in calculating the time of closing or opening the AC electrical apparatus. To the more, this method has strong ability of anti-interference. In realization, By using of single-chip computer system, the data was collected and the actual frequency of voltage and delay time was calculated. It gets good character, simple operation and fast calculation.

关 键 词：交流电器 选相分合闸 快速傅立叶变换 单片机 控制技术 断路器 

分 类 号：TM561[电气工程—电器]