基于dq0算法的电气化铁路有源补偿技术研究

Researches on dq0 Vector Algorithm based Active Power Compensation Technology for Electrified Railways

电气化铁路电力机车负载给铁路牵引供电系统和电力系统带来严重的电能质量问题,为了治理电网系统的电能质量问题,引入了有源电力滤波装置,该装置可以补偿电网中的谐波、无功,从而改善电网系统的电能质量。将dq0矢量旋转算法引入有源滤波技术中,该算法适应于各种负载电流的谐波检测以及系统的有效控制。仿真分析表明,基于dq0旋转矢量算法的有源滤波技术可以更有效地抑制电力机车带来的负序问题,并减少谐波、无功对电网的影响,提高了电网的电能质量。

The loads of electric locomotive will bring severe power quality problems to railway traction power supply system and electric power system of electrified railway, in order to control power quality problems existed in power grid, active power filtering devices are introduced for compensating harmonies and reactive power in power grid so as to improve power quality of power grid. The dqO vector algorithm is introduced into active power filter technology which is applicable for inspection of harmonic current under different loads and effective system control. The simulation and analyzing results show that dqO vector algorithm based active power filter technology may effectively suppress influences to power grid by negative sequence, harmonics and reactive power caused by electric locomotive, which can improve power quality of power grid.