广州地铁1号线谐波测量及分析

Harmonic measure and analysis of Guangzhou Metro line 1

介绍了在不同运行方式下,广州地铁1号线供电系统110kV侧的谐波测量结果,并对测量结果进行了分析。指出广州地铁1号线供电系统中主要存在11次、13次谐波电流。在目前负荷水平不高的情况下,在滤波器退出运行时,其谐波电流尚未超过国标限制值;但在未来高峰负荷期间,需将滤波器投入运行。另外,还介绍了在广州地铁1号线挂网试运行的24脉波整流变压器对改善地铁供电系统谐波的情况。最后说明需经理论分析、计算及经济比较后,方可决定是否采用滤波器或24脉波整流变压器来抑制地铁系统的谐波。

Harmonic measurements at 110kV power supply side of Guangzhou Metro line 1 in various operation modes are introduced.Measuring results are analyzed. It is pointed out that 11th, 13th harmonic current exist in the power supply system. At present loadsituation, without filter in operation, the harmonic current does not exceed specified values in the national standard. However, in future peakload situation, it is necessary to put the filter into operation. The metro power supply harmonics improvement by the 24-pulse rectifiertransformer during the trial operation on the metro line 1 is also described. Finally, it is proposed that only after analysis, calculation andcomparison economically can the decision be made whether to use filter or 24-pulse rectifier transformer to restraint the harmonics in themetro system.