基于能馈式牵引供电装置的城市轨道交通无功补偿策略

摘要

针对城市轨道交通牵引供电系统在非高峰时段功率因数低的问题,提出一种基于能馈式牵引供电装置的无功补偿方案.分析了供电系统非高峰时段无功功率较大的成因,介绍了能馈式牵引供电装置的基本结构和工作原理,并结合无功功率的分布提出了相应的无功补偿策略,最后通过一台2MW样机挂网试验验证了该补偿策略的可行性.%Due to the low power factor of traction power supply system for urban rail transit in rush hours, a reactive power compensation scheme based on energy-feedback traction power supply system was proposed in this paper. The causes of the low power factor of power supply system were given, as well as the structure and working principle of the energy-feedback traction power supply equipment. A reactive power compensation strategy was proposed according to the distribution of reactive power. At last, a prototype rated 2MW was built and tested, and demonstrates that the reactive power compensation strategy proposed is feasible.