[1]吴细秀,张圆圆,冯 宇,等.基于瞬态场—路耦合法的特高压自校CT误差特性分析[J].高压电器,2020,56(07):152-158.[doi:10.13296/j.1001-1609.hva.2020.07.022]
 WU Xixiu,ZHANG Yuanyuan,FENG Yu,et al.Error Characteristics Analysis for UHV Self-calibration CT Using Transient Field-circuit Coupled Analysis Model[J].High Voltage Apparatus,2020,56(07):152-158.[doi:10.13296/j.1001-1609.hva.2020.07.022]
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基于瞬态场—路耦合法的特高压自校CT误差特性分析()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第56卷
期数:
2020年07期
页码:
152-158
栏目:
研究与分析
出版日期:
2020-07-20

文章信息/Info

Title:
Error Characteristics Analysis for UHV Self-calibration CT Using Transient Field-circuit Coupled Analysis Model
作者:
吴细秀1 张圆圆1 冯 宇2 王 欢2 盛 况1 黄文博1
(1. 武汉理工大学自动化学院, 武汉 430070; 2. 中国电力科学研究院, 武汉 430074)
Author(s):
WU Xixiu1 ZHANG Yuanyuan1 FENG Yu2 WANG Huan2 SHENG Kuang1 HUANG Wenbo1
(1. College of Automation, Wuhan University of Technology, Wuhan 430070, China; 2. China Electric Power Research Institution, Wuhan 430074, China)
关键词:
特高压CT 有限元法 自校 场—路耦合 误差分析
Keywords:
UHV CT finite element self-calibration field-circuit coupled error analysis
DOI:
10.13296/j.1001-1609.hva.2020.07.022
摘要:
随着特高压工程的推进,CT现场校验成为亟需解决的难题。由于国内外对此问题研究尚属空白,为解决该难题,提出将实验室CT校验用的自校法应用于现场交接试验。在解决了一系列自校法工程应用问题的基础上,重点针对CT校验误差展开研究。首先分析了具有自校功能CT的结构特征,并在此基础上根据CT误差定义对其误差特性进行了理论分析;讨论了影响误差的主要因素;为计算误差大小,建立了基于有限元法瞬态场—路耦合CT误差分析模型;利用该模型分别对CT两种工作模式(测量用和校验用)下的误差进行计算,并与实际测量结果比较。结果表明:具有自校功能的CT作测量用及作自校用时的仿真误差及实际测量误差均小于0.1%,满足特高压CT校验精度要求。
Abstract:
With the construction of UHV projects, CT site calibration has become an urgent problem which prevents it further applying. However, there almost no scientific research institution and scholars carry out research on this new problem. To solve this problem, a self-calibration method is proposed for site calibration. Focusing on the most important problem of CT calibration, the calibration error is studied. According to the CT error definition and the structural features of self-calibration CT, the error characteristics and the influencing factors of the self-calibration CT are analyzed, and the transient field-circuit coupled method is proposed to calculate the error. Based on the finite element transient field circuit coupling principle, the field-circuit coupled model is established. Then the errors of two methods are calculated and analyzed. The results show that: the simulation errors and actual measurement errors of CT with two-different-situations are less than 0.1%. It is up to the accuracy class and it satisfies the UHV CT calibration requirements.

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备注/Memo

备注/Memo:
收稿日期:2020-01-20; 修回日期:2020-03-10吴细秀(1976—),女,博士,副教授,主要从事高电压绝缘技术及高电压电磁仿真方面的研究。
更新日期/Last Update: 2020-07-25