牵引供电系统的无功补偿与谐波治理研究  

Study on Reactive Power Compensation and Harmonic Control in Traction Power Supply System

作　　者：王丰元[1] 邓朴[1] 王攀[2] 贾体康 孙志达[2] 

机构地区：[1]贵州电网公司电网规划研究中心,贵州贵阳550002 [2]武汉大学电气工程学院,湖北武汉430072

出　　处：《陕西电力》2015年第1期86-89,共4页Shanxi Electric Power

摘　　要：随着我国电气化铁路运输系统的飞速发展,日益增加的铁道负荷容量与复杂性对系统电网及牵引供电系统的压力越来越大。而投入灵活和高效的动态无功功率补偿装置对于确保铁路供电系统的稳定运行来说是非常必要的。而传统的固定电容器与晶闸管投切电容器在补偿无功的同时本身会带来谐波影响。针对单相牵引负荷波动性大,随机性强,产生大量谐波、无功及负序分量的特点,提出采用由铁路功率调节器和晶闸管投切电容器构成的混合补偿装置。提出RPC和TSC的拓扑结构,二者实现独立控制,降低二者之间的耦合程度。仿真结果证明了该装置具有响应速度快、补偿精度高、谐波输出低等优异性能,对改善电网电能质量的有效性和可行性。With the rapid development of electrified railway transportation systems in China,the increasing railway load capacity and complexity make much more influence on power grid and traction power supply system.In order to ensure the stable operation of railway power supply system,it is necessary to use flexible and efficient dynamic reactive power compensation device.However,the harmonics of capacitor cannot be eliminated by using fixed capacitor and thyristor switched capacitor（TSC） while implementing reactive power compensation.In consideration of the large fluctuation,strong randomness of single-phase traction load and the characteristics of resulting in a large number of harmonics,reactive and negative sequence component,the paper proposes a mixing compensation device consisting of railway static power conditioner（RPC） and TSC.Furthermore,the paper gives the topology of RPC and TSC with independent control,reducing the degree of coupling between them.Simulation results prove that this device has superior performances such as fast response,high compensation accuracy,low harmonic output and so on,while proving the effectiveness and feasibility of the hybrid compensation system to improve power quality.

关 键 词：动态 无功补偿 晶闸管投切电容器 铁路功率调节器 

分 类 号：TM714[电气工程—电力系统及自动化] TM922