A mini NMR sensor for assessing the aging level of the silicone rubber insulator
A novel portable NMR sensor with an adjustable clamp structure has been designed and constructed for the purpose of noninvasively assessing the aging status of the silicone rubber insulator used in the high voltage power transmission.The silicone rubber insulators in different depth and serviced for different years were measured and the effective transverse relaxation time T2eff was recorded.The result shows that the effective transverse relaxation time T2eff decreases as the insulators service year increases and the depth decreases.The relative permittivity was meassured which shows a same changing trend as transverse relaxation time T2eff.It indicates that the T2eff measured by the portable NMR sensor can be used as an index to reflect the degradation of the insulators insulation performance.
silicone rubber insulator aging mini NMR sensor transverse relaxation time
Huang Jianhua Yi Cheng Yang Wu Xia Yunfeng Qiu Qiuhui Qi Jinfeng
Guangdong Power Grid Co. LTD. Dongguan PowerSupply Bureau Dongguan, China State Key Laboratory of Power Transmission Equipment & System Security and New Technology Chongqing,
国际会议
重庆
英文
789-792
2015-12-19（万方平台首次上网日期，不代表论文的发表时间）