电力谐波对电能表电能计量的影响分析

Analysis of Influence of Power Harmonics on Electric Energy Metering

剖析了谐波产生的原因及其对各方面的影响,重点分析谐波对电能表计量装置的影响,通过试验数据总结各次谐波下电能表计量装置的频率误差,误差与谐波功率的关系,全能式电能表、基波能量的电能表计量误差与谐波次数关系;最后提出减少谐波及降低其影响的措施,希望能为电力行业保驾护航,使之更加稳定运行。

Focusing on the influence of harmonic on the metering device of electric energy meter,the causes of harmonics and their effects on all aspects were analyzed.Based on the test data,the frequency error of the electric energy meter measuring device under each harmonic,the relationship between the error and harmonic power,the relationship between the measurement error of the universal energy meter and the electric energy meter of the fundamental wave energy and the harmonic number were summarized.Finally,the measures to reduce the harmonic and its impact were proposed hoping to protect the power industry and make it more stable operation.