基于数据相关性分析的全光纤电流互感器误差状态在线评估方法研究  

Research on On-line Error State Assessment Method of All-optical-fiber Current Transformer Based on Data Correlation Analysis

作　　者：叶剑涛 李宾宾 黄杰 马亚彬 朱胜龙 张竹 YE Jiantao;LI Binbin;HUANG Jie;MA Yabin;ZHU Shenglong;ZHANG Zhu(Electric Power Research Institute of State Grid Anhui Electric Power Co.,Ltd.,Hefei 230601,China;State Grid Anhui Electric Power Co.,Ltd.,Hefei 230022,China;Hefei University of Technology,Hefei 230009,China)

机构地区：[1]国网安徽省电力有限公司电力科学研究院,合肥230601 [2]国网安徽省电力有限公司,合肥230022 [3]合肥工业大学,合肥230009

出　　处：《高压电器》2022年第12期156-162,共7页High Voltage Apparatus

基　　金：国网安徽省电力有限公司科技项目(52120522000S);安徽省自然科学基金(2008085QE240)。

摘　　要：全光纤电流互感器是特高压输电系统中电流测量的关键设备,复杂的物理结构导致其测量误差易受多种因素的影响,稳定性较差。常规的误差检测方法是定期利用标准互感器进行比对测试,无法及时发现误差状态的劣化趋势,且经济性较差。针对这一问题,文中提出了一种基于相关性分析的全光纤电流互感器误差状态评估方法:采集换流站同一测量点下三台全光纤电流互感器的测量数据,在电气物理相关性的约束下,针对全光纤电流互感器的测量数据进行主元分形,将误差评估映射为Q统计量的变化分析。数据分析表明,文中提出的方法可实现全光纤电流互感器测量误差的实时评估,评估精度最高可达0.2级。All fiber current transformer is the key equipment of current measurement in UHV transmission system.Its complex physical structure makes its measurement error be vulnerable to many factors and the stability is weak.The conventional error detection method is to use the standard transformer regularly for comparison test,which can not find the deterioration trend of error state in time and the economy is also weak.In view of this problem,a kind of error state assessment method of all optical fiber current transformer based on correlation analysis is proposed in this paper:The measurement data of three sets of all optical fiber current transformers at the same measurement point of converter station is collected,the measurement data of the all optical fiber current transformer is used for principal component fractal under the constraints of electrical and physical correlation. The error assessment is mapped to the variation analysis of Q statistics.The data analysis shows that the method proposed in this paper can achieve real-time assessment of the measurement error of all optical fiber current transformer and the assessment accuracy is up to grade 0.2.

关 键 词：全光纤电流互感器 测量误差 标准互感器 主元分析 

分 类 号：TM452[电气工程—电器]