【摘要】 电气化铁路运行具有不对称性,会产生快速波动的负序电流,并流入各处电力系统,对系统发电、供电设备安全及可靠运行产生严重影响。本文分析了负序电流产生的原理以及基于Steinmetz原理的负序电流抑制方法、存在问题,根据优化的Steinmetz算法本文提出采用三站协同补偿的思想。将负荷站所需无功补偿容量在保证不超过额定容量的前提下平均分配到本站及相邻站中,这样可以明显地减少牵引变电站的无功补偿安装容量。还对Steinmetz优化补偿及三站协同补偿进行了Matlab仿真分析,结果表明协同优化补偿与单站优化补偿一样具有很好的补偿效果。更多还原

【Abstract】 Electrified railway’s asymmetric operation will produce negative sequence current which is rapid fluctuating,and it will flow into the power system with a serious impact to the power supply equipment’s safe and reliable operation.This paper analyzes the principle of negative sequence currents and the method for suppressing the negative sequence current,and proposes using optimized Steinmetz algorithm to calculate the compensation capacity.Then this paper proposes a thought of three-station collaborative compensation based on Steinmetz optimization algorithm.The compensation capacity is distributed to adjacent station and itself averagely within their rated capacity.This method can significantly reduce the traction substation’s installation capacity of reactive power compensation.This paper also analysis Steinmetz optimize compensation and three station collaborative compensation through matlab simulation.The results show that the collaborative optimization compensation has good effect as the single station compensation.更多还原