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以鹰厦电气铁道邵来段（５个牵引变电站）为实例，分析了由故县变电站１１０ｋＶ母线向３个或４个牵引变电站供电时输入电力系统的主要次谐波电流。采取变压器Ｙ／△－１１与Ｖ／Ｖ接线交错使用能抑制５、７次谐波电流。
Taking Shaoyilai Section of Eagle-Shaxia Electric Railway (5 traction substations) as an example, the main subharmonic currents of the input power system are analyzed when power is supplied from 110kV bus in Guxian Substation to 3 or 4 traction substations. Take transformer Y / △ -11 and V / V wiring staggered use can inhibit the 5th, 7th harmonic current.