| 引用本文: | 陈安伟,乐全明,冯亚东,阎嫦玲,李广宇.全光纤电流互感器温度性能优化方法[J].电力自动化设备,2011,31(1):0 |
| CHEN Anwei,YUE Quanmin,FENG Yadong,YAN Changling,LI Guangyu.Temperature performance optimization of FOCT[J].Electric Power Automation Equipment,2011,31(1):0 |
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| 摘要: |
| 论述了全光纤电流互感器（FOCT）的光路结构及其工作原理，分析了温度对FOCT性能影响的几个因素和特点：线性双折射会对光纤传感头的温度特性造成比较大的影响，圆双折射具有抵消线性双折射的特点；传感光纤Verdet常数受温度的影响，与温度具有线性关系；1/4波片误差造成的影响与温度也具有线性关系。提出了综合解决FOCT温度影响的方法：通过把传感光纤绕制成螺线管增大圆双折射，减小线性双折射，从而减少温度的影响；通过调整1/4波片参数，在温度变化时，使其引入的误差正好补偿Verdet常数受温度影响造成的误差。试验结果表明，采用该方法的FOCT温度性能良好，已经可以满足数字化变电站实际应用的需求。 |
| 关键词: 数字化变电站 全光纤电流互感器 Faraday磁光效应 Ｓagnac干涉仪 |
| DOI： |
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| Temperature performance optimization of FOCT |
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CHEN Anwei1,2, YUE Quanmin3, FENG Yadong4, YAN Changling4, LI Guangyu4
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1.Chongqing University，Chongqing 400030，Ｃhina;2.Zhejiang Electric Power Corporation，Hangzhou 310007，Ｃhina;3.Zhejiang Electric Power Corporation，Hangzhou 310007;4.anjing NARI-Relays Electric Co.，Ltd.，Nanjing 211102，Ｃhina
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| Abstract: |
| The topology and operational principle of FOCT（Fiber Optical Current Transducer） are introduced and several factors affecting its temperature performance are analyzed：the larger circular birefringence and smaller linear birefringence of fiber sensing coil，Verdet constant of sensing fiber and the quarter-wave plate error parameter. Methods to avoid the influence of temperature on FOCT performance are presented：the helically-wound sensing fiber to increase circular birefringence and decrease linear birefringence，the adjustment of quarter-wave plate parameters to compensate the influence of temperature. Test results show that the temperature performance of improved FOCT is excellent，meeting the requirements of digital substation. |
| Key words: digital substation FOCT Faraday magneto-optical effect Sagnac interferometer |
