基于ZigBee的电气化铁路谐波监测系统研究

Study on monitoring system of electrification railway harmonic based on ZigBee

电气化铁路谐波监测具有非常重要的意义。本文针对电气化铁路谐波发生的特点,提出了一种基于加窗FFT和全相位FFT的谐波检测算法,仿真表明算法可以保证谐波的幅值、频率和相位的准确性。同时,提出了基于ZigBee的谐波监测系统,通过对监测系统硬件和软件设计,完成了监测系统的基本功能,并对牵引变电站进行了实际谐波测试,测试结果表明本监测系统具有可行性和显著的现场应用意义。

Harmonic monitoring of electrified railway is of great significance.In view of the characteristics of harmonic generation in electrified railway,this paper proposes a harmonic detection algorithm based on windowed FFT and all-phase FFT.The simulation shows that the algorithm can guarantee the accuracy of amplitude,frequency and phase of harmonic.The paper also proposes Zigbee-based harmonic monitoring system.The basic function of the monitoring system is realized by designing system hardware and system software.Moreover,an actual harmonic test is taken in a traction substation and the test results show that this monitoring system is feasible and has remarkable field application significance.