高压架空输电线路的电磁场分析及暂态稳定性影响探讨  

Electromagnetic Field Analysis of High Voltage Transmission Line and Transient Stability of Power System

作　　者：王仁丽[1] 代月明[1] 施威[2] 高晶 Wang Renli;Dai Yueming;Shi Wei;Gao Jing(School of Electronic Control Engineering,Xuzhou Institute of Technology,Xuzhou 221018,China)

机构地区：[1]徐州工程学院电控工程学院,江苏徐州221018 [2]青岛科技大学信息工程学院,山东青岛266061

出　　处：《徐州工程学院学报（自然科学版）》2022年第1期54-62,共9页Journal of Xuzhou Institute of Technology(Natural Sciences Edition)

基　　金：国家自然科学基金项目(62101298);徐州工程学院校级项目(XKY2019105,YGJ2048)。

摘　　要：输电线路输送电力的能力与电力系统稳定性密切相关,高压输电线路在运行过程中产生的电磁场对周围的电磁环境有着巨大的影响.由于线路长,经过的地貌比较复杂,高压输电线路产生的电磁场对人体健康和信号通讯造成的影响不可忽视.该文以220 kV架空线的输电线路为研究对象进行了无限大单电源系统Simulink电气仿真.仿真结果表明,电力系统的暂态稳定性与输电线路的长度有关,线路长度越长,对暂态稳定性造成的影响越大.同时,短路位置、故障类型、切除时间也对暂态稳定性有影响.将输电线路的长度对电磁场和系统暂态稳定的定性影响纳入仿真,可为探究如何正确选择高压的输电技术增加输电距离、输电方式,发挥联网效益、节省工程投资提供有效参考.The transmission capacity of UHV transmission lines is largely determined by the stability of the power system.The electromagnetic field generated during the operation of high-voltage transmission lines has a huge impact both on the surrounding electromagnetic environment and on the human health.Furthermore,the communication between signals cannot be ignored due to the long line and the complicated terrain.Therefore,this paper takes the transmission line of 220kV overhead line as the research object to carry out the Simulink electrical simulation of the infinite single power supply system.The simulation results show that the transient stability of power system is related to the length of transmission line,and the longer the line length is,the greater the influence on transient stability.Through the qualitative influence of the length of the transmission line on the electromagnetic field and the transient stability of the system,it lays a good foundation for exploring how to correctly select high voltage transmission technology to increase transmission distance and transmission mode in saving project investment and giving full play to the benefits of networking.

关 键 词：无穷大电源系统 镜像负荷 暂态稳定 

分 类 号：TM726.1[电气工程—电力系统及自动化]