牵引负荷负序电流对电网运行状况影响研究  

Research of impact of traction load negative sequence current on grid operating status

作　　者：刘乾勇[1,2] 李欣然[1] 肖聪[3] 李金鑫[4] 

机构地区：[1]湖南大学电气与信息工程学院,湖南长沙410082 [2]湖南省电力公司邵阳电业局,湖南邵阳422000 [3]湖南省电力公司益阳电业局,湖南益阳413000 [4]合肥供电公司,安徽合肥230002

出　　处：《电工电能新技术》2013年第4期7-10,25,共5页Advanced Technology of Electrical Engineering and Energy

基　　金：高等学校博士学科点专项科研基金资助项目(20070532052)

摘　　要：牵引负荷是大功率单相整流负荷,是一个典型的负序谐波源,投入电网会产生深远影响。利用电力系统分析综合程序(power system analysis software package,PSASP)的用户自定义(User Design,UD)模型功能实现将一种牵引负荷负序电流源模型接入电网,以EPRI-36节点为网络背景进行谐波仿真计算,通过对不同牵引负荷水平下的仿真,定量的分析电气化铁路牵引负荷对发电机、变压器、线路、继电保护等方面的影响,并得出相关结论。Traction load is a high-power single-phase rectifier load. It is a typical negative sequence harmonic source which would have profound impact when connected to the grid. A traction load of negative-sequence current source model connected to the grid is realized by using the user design （UD） model function of the power system a nalysis software package （PSASP）. By carrying harmonic simulations calculation on different levels of traction load in EPRI-36 node network background, the impact that electrified railway traction load have on the generator, trans-former, motor, line, relay protection, etc. has been analyzed quantitatively. Finally, relevant conclusions have been drawn in the paper.

关 键 词：牵引负荷 负序电流 PSASP UD 谐波仿真 

分 类 号：TM743[电气工程—电力系统及自动化]