电力系统谐波溯源方法综述

Review of harmonics source traceability methods in power system

电力系统谐波溯源是谐波评估和治理的前提和基础。结合国内外谐波溯源的发展现状,从PCC点谐波电流和谐波电压责任划分两个角度,明确指出谐波溯源三个层面问题对应的物理和数学含义,并详细分析了戴维南和诺顿等效电路模型在解决谐波溯源问题时的不同与相同之处。从定量和定性分析两个层面,结合两种电路模型对上述各种溯源方法实现的关键问题、难度进行总结。根据当前电网技术的新发展,对谐波溯源需要进一步开展的研究进行了探讨。

Traceability of harmonic sources in power system is the premise and foundation of harmonic assessment and management.Combining with the development of harmonics traceability at home and abroad,the physical and mathematical meanings of harmonic source traceability on three different levels are clearly pointed out from two aspects of PCC point harmonic current and harmonic voltage responsibility division,and the differences and similarities with Thevenin and Norton equivalent circuit models for harmonic source identification are analyzed in detail.From two levels of quality and quantity analysis,combining with the two different circuit models,this paper summarizes the key problems and difficulties in the implementation of the above-mentioned traceability methods.Based on the new development of current power grid technology,the research on harmonic traceability in the future is discussed.