中国电机工程学报2017，Vol.37Issue(16)：4873-4879,7.DOI:10.13334/j.0258-8013.pcsee.170112
基于波分时分复用技术的变压器局部放电光纤超声定位技术研究
Study on Fiber Ultrasonic Location Technology of Partial Discharge in Transformer Based on Wavelength Division Multiplexing/Time-Division Multiplexing Technology
摘要
Abstract
Compared with piezoelectric transducers,fiber Bragg grating (FBG) has the advantages of high sensitivity and good anti-interference performance for the ultrasonic signal detection of partial discharge(PD) in transformer,but relevant methods of expanding PD detection range in transformer by multi-point FBG multiplexing technology have not been considered so far.Therefore,this paper proposed an fiber ultrasonic location technology of PD in transformer based on multi-point FBG sensors,which is achieved by wavelength and time division multiplexing technology.Position recognition of FBG sensors can be realized through the wavelength division multiplexing(WDM) technology,and the problem that single FBG cannot meet the full range detection of PD in transformer can be solved by time-division multiplexing(TDM) technology.A testing platform of partial discharge in transformer oil based on multi-point FBG ultrasonic sensing system was established,detection results of different FBG measuring points for the ultrasonic generated by PD in the oil were compared,and the ultrasonic location experiment based on multi-point FBG of same PD source in the oil was carried out.The results show that:The detection band of different FBG measuring points is close,and consistency of different FBG sensors is satisfied.Semi-distributed measurement of PD signal in transformer oil can realize by multi-point FBG,and based on the multi-point FBG measurement results,location of the PD source can be realized by grid search algorithm.关键词
变压器/局部放电/光纤布喇格光栅/超声定位Key words
transformer/partial discharge (PD)/fiber Bragg grating/ultrasonic location分类
信息技术与安全科学引用本文复制引用
石城,马国明,毛乃强,张强,李成榕,李志兵,王浩..基于波分时分复用技术的变压器局部放电光纤超声定位技术研究[J].中国电机工程学报,2017,37(16):4873-4879,7.基金项目
国家自然科学基金资助项目(51677070) （51677070）
中国科协青年人才托举工程 （）
中央高校基本科研业务费(JB2015RCY02).Supported by National Natural Science Foundation of China(51677070) （JB2015RCY02）
Young Elite Scientists Sponsorship Program by CAST （）
Fundamental Research Funds for the Central Universities(JB2015RCY02). （JB2015RCY02）
