基于ΔI_PAM原理小电流接地选线保护的应用研究  

Application Research ofΔI_PAM-Based Small Current Grounding Line Selection Protection

作　　者：王俊 罗嘉玮 权宪军[2] 张驰 王高海[2] 刘林[2] 马长武[2] 张适 马看齐 刘晓涵 袁超 张鑫 曹学钦 罗雪柯 WANG Jun;LUO Jiawei;QUAN Xianjun;ZHANG Chi;WANG Gaohai;LIU Lin;MA Changwu;ZHANG Shi;MA Kanqi;LIU Xiaohan;YUAN Chao;ZHANG Xin;CAO Xueqin;LUO Xueke(Chongqing Beibei Power Supply Company,State Grid Corporation of China,Chongqing 400700,China;Dongfang Electronics Co.,Ltd.,Yantai Shandong 264000,China)

机构地区：[1]重庆北碚供电公司,重庆400700 [2]东方电子股份有限公司,山东烟台264000

出　　处：《湖北电力》2022年第5期52-57,共6页Hubei Electric Power

基　　金：国家重点研发计划(项目编号:2020YFB1710200);国家自然科学基金(项目编号:52177203)。

摘　　要：提出了一种基于ΔI_PAM三相电流突变量相不对称原理小电流接地选线保护的新算法,具有概念清晰、判据简单、响应迅速、动作快速、工程化优和可靠性高的显著特征。首先,对小电流接地系统单相接地故障情况、五大痛点、技术现状及难点和现有选线原理作了介绍,对单相接地故障危害影响进行了再认识,提出了基于相不对称原理的新算法,并对基于新算法研制产品的试验、检测和试点情况作了描述。最后,给出了新算法的技术特点,指出新算法的分布式装置可实现分布式选线与选段的目的。This paper proposes a new algorithm of small-current grounding line selection protection based on the principle ofΔI_PAM three-phase current mutation phase asymmetry.The proposed method is characterized by clear concept,simple criterion,rapid response,rapid action,excellent engineering and high reliability.First of all,single-phase grounding fault of small-current grounding system,five pain points,technical status and difficulties and the principle of current line selection are introduced;the influence of single-phase earth fault is reconsidered;a new algorithm based on the principle of phase asymmetry method is proposed,and then,the experiment,test and pilot of the product based on the new algorithm method are described.Finally,the paper presents the technical characteristics of the new algorithm,pointing out that the distributed device of the new algorithm can realize the purpose of distributed line selection and segment selection.

关 键 词：ΔI_PAM 选线保护 存量配电终端 新算法 小电流接地 新型电力系统 

分 类 号：TM76[电气工程—电力系统及自动化]