京沪高铁固镇变电所直挂式高压有源滤波器测试分析

Analysis of Test of Direct-mounted High Voltage Active Power Filter for Guzhen Substation in Beijing-Shanghai High-speed Railway

随着大量不同型号的电力机车上线运行,电力机车产生的谐波和无功分量影响了电网电能质量,严重时影响电气化铁路的正常运行,牵引供电系统谐波治理和无功功率补偿得到运营单位的广泛关注。依托京沪高速铁路谐波治理工程,研制了直挂式高压有源滤波器,并在固镇牵引变电所两供电臂T-N间分别装设进行运行测试,实时监测铁路供电系统负序和牵引网谐波电流。通过有源补偿装置补偿,能吸收牵引供电系统2~13次低次谐波,改善功率因数、电压质量及负序和减少谐波对供电系统的影响。

Along with a large number of different types of electric locomotives running on the line,the harmonics and reactive power generated by electric locomotives affect the power quality of the power grid,and seriously affect the normal operation of the railway electrification system,the harmonic control and reactive power compensation of traction power supply system have attracted the attentions of operators.A direct-mounted high voltage active filter,installed between T-N of the two power supply sections of Guzhen traction substation,has been developed,relying on the Beijing–Shanghai High-Speed Railway Harmonic Control Project,for real-time monitoring of the negative sequence and the traction network harmonic current of the railway power supply system.Through compensation by the active compensation device,the device is able to absorb 2~13 low order harmonics of traction power supply system,improve the power factor,voltage quality and negative sequence,and reduce the influence of harmonics on the power supply system.