基于MATLAB/Simulink输电线路距离保护的建模与仿真分析  

Analysis of Modeling and Simulation for Transmission Lines Distance Protection Based on MATLAB/Simulink

作　　者：张立 方洋洋 ZHANG Li;FANG Yangyang(Hanjiang Water Resources&Hydropower(Group)Co.,Ltd.,Hydropower Company,Danjiangkou,Hubei 442700,China;School of Physics and Electronic Engineering,Hanjiang Normal University,Shiyan,Hubei 442000,China;Center for Research on the Preparation and Properties of New Functional Materials,Hanjiang Normal University,Shiyan,Hubei 442000,China)

机构地区：[1]汉江水利水电(集团)有限责任公司水电公司,湖北丹江口442700 [2]汉江师范学院物理与电子工程学院,湖北十堰442000 [3]汉江师范学院新型功能材料制备与物性研究中心,湖北十堰442000

出　　处：《东北电力技术》2023年第8期1-3,31,共4页Northeast Electric Power Technology

基　　金：汉江师范学院2020年校级教学改革研究项目(2020C22);湖北省高等学校汉江师范学院2021年省级大学生创新训练计划项目(S20210100211);湖北省高等学校汉江师范学院2022年省级大学生创新训练计划项目(S202210518046);湖北省高等学校汉江师范学院2022年校级一般科研项目(XJ2022023);湖北省高等学校优秀中青年科技创新团队计划项目(T2020024)。

摘　　要：现代电力系统不断发展,距离保护能够有选择性切除故障元件。以方向阻抗继电器为例,针对输电线路的距离保护,利用MATLAB进行建模与仿真分析,采用0°接线方式阐述不同短路故障类型下因过渡电阻不同的各种相位的变化规律及原因,验证了Simulink用来分析输电线路距离保护过程的有效性。依据不同短路故障类型下方向阻抗继电器的相位情况,分析得出方向阻抗继电器的优点和缺点,为距离保护的研究提供参考。Modern power systems are constantly evolving,and distance protection enables selective removal of faulty components.Taking the directional impedance relay as an example,according to the distance protection for transmission lines,MATLAB is used to model and simulate the analysis.0°wiring method is used to illustrate the change rule and reasons of various phases due to different transition resistance under different short-circuit fault types,and the effectiveness of Simulink to analyze the distance protection process of transmission lines is verified.According to the phase position of directional impedance relays under different short-circuit fault types,the advantages and disadvantages of directional impedance relays are analyzed,which provide reference for the analysis of distance protection.

关 键 词：距离保护 过渡电阻 故障类型 方向阻抗继电器 

分 类 号：TM773[电气工程—电力系统及自动化]