配电变压器接线组别对雷电耐受能力的影响分析  

Analysis of influence of distribution transformer wiring group on lightning withstand ability

作　　者：高鸿鹏 咸日常[1] 孙晓维 陈蕾 王在明 范慧芳 GAO Hongpeng;XIAN Richang;SUN Xiaowei;CHEN Lei;WANG Zaiming;FAN Huifang(School of Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255000,China;Shandong Naigao Power Equipment Co.,Ltd.,Zibo 255000,China)

机构地区：[1]山东理工大学电气与电子工程学院,山东淄博255000 [2]山东耐高电力器材有限公司,山东淄博255000

出　　处：《现代电子技术》2022年第3期148-153,共6页Modern Electronics Technique

基　　金：国家重点研发计划项目(2016YFB0901303)。

摘　　要：目前配电变压器仿真建模及雷电防护措施研究均基于Yyn⁃0型配电变压器,未考虑工程中大量应用的Dyn⁃11型配电变压器与其在雷电耐受能力上的差异。针对Dyn⁃11型配电变压器雷电耐受能力研究缺失问题,基于两台不同接线组别的S13⁃315/10真型配电变压器的结构及标称参数,采用ATP⁃EMTP建立宽频等效模型,分析雷电防护措施相同的情况下及接地电阻改变时,接线组别的不同对配电变压器雷电耐受性能的影响。研究结果表明,在相同雷电防护措施下,Dyn⁃11型配电变压器高压绕组承受的过电压均低于Yyn⁃0型,Dyn⁃11型配电变压器雷电耐受能力优于Yyn⁃0型,且Yyn⁃0型配电变压器承受的感应雷过电压对于接地电阻的阻值变化更为敏感。At present,the simulation modeling of distribution transformers and the research on lightning protection measures are all based on the Yyn⁃0 distribution transformers,and the differences of lightning withstand ability between the Yyn⁃0 distribution transformers and the widely⁃used Dyn⁃11 distribution transformers are not taken into account.In view of the lack of research on lightning withstand ability of the Dyn⁃11 distribution transformer,on the basis of the structure and nominal parameters of two S13⁃315/10 real distribution transformers with different wiring groups,the ATP⁃EMTP is used to establish a broadband equivalent model to analyze the influence of different wiring groups on lightning withstand ability of the distribution transformers when the lightning protection measures are the same and the grounding resistance is changed.The research results show that,under the same lightning protection measures,the overvoltage values of the high⁃voltage windings of the Dyn⁃11 distribution transformers are lower than those of the Yyn⁃0 distribution transformers,and the lightning withstand ability of the Dyn⁃11 distribution transformers are better than that of the Yyn⁃0 distribution transformers.In addition,the induction lightning overvoltage of the Yyn⁃0 distribution transformers is more sensitive to the resistance change of the grounding resistance.

关 键 词：接线组别 配电变压器 等效模型 直击雷过电压 感应雷过电压 ATP⁃EMTP 耐雷水平 

分 类 号：TN601-34[电子电信—电路与系统] TM421[电气工程—电器]