摘要
局部放电光测法因其较好的抗干扰性,近年来在电力设备状态检测中受到关注。荧光光纤具有良好绝缘性和光谱转置特性,常被用于放电光辐射的耦合。为了优化荧光光纤检测系统,本文对荧光光纤的光谱匹配、统计差异性来源、光纤耦合长度、入射相对位置等性能影响因素进行了理论分析和试验研究。研究以空气电晕、两类荧光裸光纤和两类单光子光电器件为例,获得了荧光光纤光谱匹配和量子效率的估算方法;由实验可知,对于环绕光纤布置方式,在耦合长度为1/2周长时,光脉冲频次和脉冲时延与所测电流脉冲统计结果偏差最小;当入射角为50°左右时,光脉冲频次和时延与电流脉冲统计结果偏差最小;该研究为实际放电检测中的光纤和器件选型、光纤结构优化和部署位置设置提供了参考依据。
In recent years,the partial discharge(PD)optical detection method has been paid more attention owing to its good anti-interference performance.Because of the good insulation and spectral transpose characteristics of flu-orescent fiber,it is often used for coupling discharge light radiation.In order to optimize the optical fiber detection method,the spectral matching,optical fiber coupling length,incident relative position and other factors affecting the performance of the fluorescent fiber-based measurement were experimentally studied in this paper.Two kinds of plastic fluorescent bare fibers and two kinds of single photonic devices were employed as examples for detecting co-rona discharge in air.The spectral matching method of fluorescent fiber for PD detection was firstly obtained.It is investigated that as the coupling length of the fiber is 1/2 circumference,the optical pulse frequency and pulse time delay have the smallest deviation from the current pulse statistics,and as the incidence angle is about 50°,the sta-tistical parameters of optical are close to the current detection statistics.This study provides a reference for fiber and device selection,fiber structure optimization and deployment location setting in actual PD detection.
作者
缪金
陈平
顾寅
冷兆云
李东
吴俊锋
任明
MIAO Jin;CHEN Ping;GU Yin;LENG Zhao-yun;LI Dong;WU Jun-feng;REN Ming(Wuxi Power Supply Company of State Grid Jiangsu Electric Power Company,Wuxi 214062,China;State Key Laboratory of Electrical Insulation and Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China)
出处
《电工电能新技术》
CSCD
北大核心
2021年第7期62-69,共8页
Advanced Technology of Electrical Engineering and Energy
基金
国家电网有限公司科技项目资助(合同号:SGJSWX00KJJS2001518)。
关键词
荧光光纤
局部放电
光谱匹配
气体绝缘
频移效应
fluorescent fiber
partial discharge
spectral matching
optical detection
frequency shift effect
作者简介
缪金(1975-),男,江苏籍,工程师,硕士,研究方向为变电设备检修以及在线监测技术;通讯作者:任明(1987-),男,陕西籍,教授,博导,博士,研究方向为电力设备状态监测、先进光电传感技术、光谱图像等。
