The fifth chapters recommended the follow-up work of harmonic project -the development of active power filter and the research of electric power management based on the techniques of network.
With rapid development of electric power and electron technique, nonlinear equipments are applied in power drawing system widely, which will cause harmonic harm question inevitably.
随着电力电子技术的飞速发展，非线性装置被广泛应用于电力牵引系统，这就不可避免地引发了谐波危害问题。
3
With the rapid development of power electronics, the problem of power system harmonic pollution becomes more and more serious.