求翻译：本文首先对几种谐波检测方法的原理进行了解和学习，通过对基于瞬时无功功率的谐波检测法、基于FFT双峰曲线改进算法的谐波检测方法以及三点五点算法的仿真结果进行分析，确定三点算法的实时性好、精度高、计算量小是什么意思？

The first several harmonic detection principle for understanding and learning through the harmonic detection method based on instantaneous reactive power, to improve the simulation results of the harmonic detection method of the algorithm as well as 3.5-point algorithm based on the fft bimodal curve

This article first for several harmonic detection methods for understanding and learning theory, based on the transient reactive power of the harmonic detection method, based on double-peak curve FFT improved algorithm for harmonic detection methods, as well as 3.5 point algorithm simulation results

This article first carries on the understanding and the study to several kind of overtone examination method principle, through to based on the instant reactive power overtone examination law, carries on the analysis based on the FFT split-blip curve improvement algorithm overtone examination method

This first several harmonics detecting method for understanding and learning, through the harmonic detection method based on instantaneous reactive power theory, harmonic detection method based on improved algorithm for FFT bimodal curve as well as 3.5-point algorithm and analysis of simulation resu

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