【摘要】 电气化铁道的负荷具有不对称性,会产生快速波动的负序电流,并流入电力系统各处,对系统发电、供电设备安全、可靠运行产生严重影响。本文分析负序电流产生的原理以及负序电流的抑制方法、存在问题,提出采用MSVC,即磁控电抗器与固定电容器组配合使用来减少或消除负序电流,并通过仿真试验验证了该方法的可行性和有效性。更多还原

【Abstract】 The dissymmetry of electrization railway brings negative-sequence current waved quickly, which runs into everywhere of the electric power system. This can do great harm to the system generation and devices of power supply. In this article the principle of negative-sequence current coming into being is firstly analyzed and the present measures of restraining them and the problems are also explained. To reduce the three-phase imbalance degree of we put forward the static var compensators based on magnetic controlled reactor (MCR), which are composed of MCR and fixed capacitors to father the negative-sequence current together. This measure has been approved efficiency and feasibility through simulation.更多还原