摘要
高速铁路牵引供电系统易产生复杂多变的谐波,从而引起负序无功现象。谐波危害不仅严重影响了铁路系统的正常运营,同时破坏了地方电力系统的正常供电。研究高速铁路牵引供电系统综合补偿技术,提高供电可靠性和供电效率,切实保证电气化铁路的供电质量,具有理论与实际应用价值。针对上述问题,分析了高速铁路牵引供电系统的结构和供电方式,根据负载正常和故障状态下运行的情况,研究了牵引供电当中谐波产生的原因和特点。建立了高速铁路AT牵引供电网谐波模型,提出了基于电压同步检测的有源滤波检测与控制的研究方案,得到的结论为改善电气化铁路有源综合补偿技术提供了理论依据。
Along with the rapid growth of the rapid construction of high-speed railway and the national economic construction, more and more attention and concern are paid to the security and reliability of power supply and local power network of electrified railway traction power supply system. Due to the characteristics of high speed, heavy load and changing load, the harmonics in the railway traction power supply system are becoming complex which can cause the negative sequence reactive power harmonic interference phenomenon and lead to increasingly serious problem. The harm of harmonics not only seriously affects the normal operation of the railway system, but also destroys the normal power supply of local power system. Therefore, the study on the power compensation technology of high speed railway traction system to improve the reliability of power supply and power efficiency, and ensure the quality of power supply of electrified railway, has theoretical and practical value. Aiming at the above problems, the structure and power supply of highspeed railway traction power supply system were analyzed, and the causes and characteristics of harmonics were researched according to the loads in normal and fault condition of the traction power supply system. The harmonic model of the high-speed railway AT traction power supply network was established, and the research scheme of measurement and control of active power filter based on voltage synchronous detection was put forward in this paper. The conclusions would provide a theoretical basis for improving the comprehensive active compensation of electrified railway.
出处
《沈阳工程学院学报（自然科学版）》
2015年第2期141-145,共5页
Journal of Shenyang Institute of Engineering:Natural Science
关键词
高速铁路
同步检测法
牵引网
有源滤波器
high speed railway
synchronous detection method
the traction network
active power filter
