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| 摘要: |
| 对光电式电流互感器(OCT)和传统的电磁式电流互感器进行了比较,结果表明OCT性能优良,是传统电流互感器较为理想的替代产品。对OCT技术进行了研究,阐述了有源型OCT和无源型OCT的工作原理、电路结构和优缺点。分析了目前有源型OCT研制过程中存在的主要问题是双折射效应影响、温度影响、干扰和振动问题,无源型OCT的主要问题是高电位侧传感头的电源供应和电磁兼容问题、防电磁干扰问题。综述了光电式电流互感器技术的研究现状并对其进行了展望,高精度、高可靠性、大动态范围是其发展趋势。 |
| 关键词: 电磁式电流互感器,光电式电流互感器,有源型,无源型 |
| DOI： |
| 分类号:TM452.93 |
| 基金项目: |
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| Research status quo and development of optical current transducer |
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DI Rong-guang LIU Shi-bing
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| Abstract: |
| The comparison between OCT(Optical Current Transducer) and traditional electromagnetic current transformer shows that the former is the ideal substitute for the latter with its good performance.OCT technique is studied and working principles,structures as well as merits and demerits of active and reactive OCTs are expounded.Main problems of them are analyzed,such as dual-refraction effect,temperature,interference and vibration in active OCT and power supply at high-voltage side,electromagnetic compatibility and electromagnetic interference in reactive OCT.The status quo and development trend of OCT technique toward high precision,high reliability and large dynamic range are summarized. |
| Key words: electromagnetic current transducer,OCT,active type,reactive type |
