摘要
电气化铁道牵引供电系统各供电区段需要用分相绝缘器分断,制约了高速、重载铁路的发展。将有源滤波器与V/x结线变压器和自耦变压器供电方式有机结合,构造出新型同相供电系统。通过以检测并得到的同相综合补偿电流为参考,控制有源滤波器消除三相不平衡,并滤除谐波和无功。该系统各供电区段电压相同,可以取消分相绝缘器;变压器成本低,省出口自耦变压器;继承了自耦变压器供电方式通信防护效果好,综合经济技术性能优越的特点。仿真证实平衡方式和检测方法是正确的,同相供电系统方案是可行的。
Electric traction power supply system needs neutral section insulator in each supply sector, which restricts the development of high-speed and heavy-loaded railway. A new cophase power supply system is designed by combining the active filter, V/x connection and autotransformer. According can to the cophase comprehensive compensation current detected, the controlling of active filter can eliminate the three-phase imbalance and can filter the harmonics and reactive currents. Neutral section insulator and autotransformer are needless because of the same voltage level in each sector. Furthermore, it inherits the advantages from autotransformer such as effective communication protection and superior performance of general economy and technology. The proposed system is proved to be feasible by the simulation.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2006年第6期73-78,共6页
Proceedings of the CSU-EPSA
关键词
同相供电
牵引供电系统
自耦变压器供电方式
有源滤波器
平衡变换
cophase power supply
traction power supply system
auto transformer supply
active filter
balance transform
