宽频电能质量综合治理装置研究

Researches of Comprehensive Treatment Devices for Wideband Energy Quality

铁路变电所低压配电系统受原边牵引网负荷和次边充电机、空调等负荷影响,高次谐波、低次谐波、无功和负序电流问题同时存在,电能频率范围宽、种类复杂。本文提出一种将无源高通滤波器和传统APF相结合的宽频电能质量综合治理方案,高通滤波器主要滤除高次谐波,APF对低次谐波、无功和负序进行补偿。工程应用和实际测试验证了该装置在宽频率范围进行电能质量治理的有效性。

The low voltage power distribution system of railway substation is affected by the loads of primary side traction network and loads of chargers and air conditioners at secondary side,where there are problems of higher order harmonics,lower order harmonics,reactive power and negative sequence current existed all at once,the frequencies of energy quality are wide and complex in varieties.The paper puts forward a scheme for comprehensive treatment of wideband frequency energy quality combined the passive high pass filter with traditional APF,where the high pass filter is used to filter high order harmonics,APF is used to compensate lower order harmonics,reactive power and negative sequence.Engineering application and actual tests verify the effectiveness of the device for energy quality treatment within range of wideband frequency.