不同控制背景下的新能源集中送出线路保护适应性分析  

Adaptability Analysis of Protection for New Energy Centralized Feeders under Different Control Backgrounds

作　　者：史雷敏 惠杰 田宝江 李宝伟 马和科 SHI Leimin;HUI Jie;TIAN Baojiang;LI Baowei;MA Heke(Xuchang Power Supply Company,State Grid Henan Power Company,Xuchang 461000,Henan,China;State Grid Henan Electric Power Company,Zhengzhou 450003,Henan,China;XJ Electric Co.,Ltd.,Xuchang 461000,Henan,China)

机构地区：[1]国网河南省电力公司许昌供电公司,河南许昌461000 [2]国网河南省电力公司,河南郑州450003 [3]许继电气股份有限公司,河南许昌461000

出　　处：《电网与清洁能源》2024年第12期120-127,共8页Power System and Clean Energy

基　　金：国家电网有限公司科技项目(521750230004)。

摘　　要：可再生能源发电的不确定特性对能源送出线路的保护性能提出了巨大挑战。为了解决这个问题,该文首先利用逆变型可再生能源的高度可控特性,分别分析了跟网型、构网型控制方法下的故障特性。在此基础上,对送出线路的纵联距离保护和纵联电流差动保护的适应性进行了研究,并对场站侧和系统侧保护元件的动作性能进行了综合分析。最后,通过MATLAB/Simulink仿真平台检验了所提方法的正确性。The uncertain characteristics of renewable energy feeders pose a great challenge to the protection performance of renewable energy transmission lines.For this reason,this paper,firstly using the highly controllable characteristics of Inverter-Interfaced Renewable Generation,analyzes the protection adaptability of the grid-following type and the grid-forming type control methods.Secondly,on the basis of this,the adaptability of the longitudinal distance protection and the longitudinal current differential protection of the outgoing line is investigated,while the operational performance of the protection elements on both the station side and system side is comprehensively studied.Finally,the correctness of the proposed method is examined by MATLAB/Simulink simulation platform.

关 键 词：新能源故障控制 差动保护 距离保护 适应性 

分 类 号：TM77[电气工程—电力系统及自动化] TM61