电测与仪表2025，Vol.62Issue(9)：166-175,10.DOI:10.19753/j.issn1001-1390.2025.09.019
基于MEMS光纤传感器的油浸式电流互感器在线监测技术
Online monitoring technology for oil-immersed current transformers based on MEMS fiber optic sensor
摘要
Abstract
A new on-line monitoring scheme of oil-immersed current transformer based on micro-electro-mechanical systems(MEMS)optical fiber sensing technology is proposed and studied in view of the shortcomings of gas chro-matography,such as the need to take oil samples regularly and the discontinuity of monitoring.This paper intro-duces a MEMS fiber optic sensor which integrates temperature-pressure and hydrogen-acetylene detection modules.Through finite element simulation,an electromagnetic model of the oil-immersed current transformer is developed.The feasibility of scheme is demonstrated by comparing pre and post-sensor installation electromagnetic distributions and secondary current waveforms.Heat-flow coupling simulation analyzes insulation oil temperature distribution and flow characteristics,highlighting effective sensor monitoring of faulty gas at the oil inlet.The built MEMS optical fi-ber online monitoring system for 110kV three-phase oil-immersed current transformers is validated through field ex-periments,enabling real-time acquisition of oil temperature,pressure,hydrogen,and acetylene parameters.Suc-cessful detection of excessive dissolved hydrogen content in B-phase oil underscores its potential in early fault moni-toring and prevention.关键词
油浸式电流互感器/在线监测/多物理场仿真/MEMS光纤传感器Key words
oil-immersed current transformer/online monitoring/multi-physics simulation/MEMS fiber optic sensor分类
信息技术与安全科学引用本文复制引用
沈畅,贾雅君,金之俭,江俊杰..基于MEMS光纤传感器的油浸式电流互感器在线监测技术[J].电测与仪表,2025,62(9):166-175,10.基金项目
上海市青年科技英才扬帆计划资助项目(21YF81419300) （21YF81419300）
上海交通大学新进青年教师启动计划项目(21X010500824) （21X010500824）
