全光纖電流互感器長期溫度穩(wěn)定特性研究
胡浩亮1,黃俊昌1,夏歷2,嚴(yán)震霖2,彭慎3
(1 中國電力科學(xué)研究院有限公司,湖北 武漢 430074;2 華中科技大學(xué) 光學(xué)與電子信息學(xué)院,湖北 武漢 430074;
3 長飛光纖光纜股份有限公司,湖北 武漢 430074)
摘 要:互感器的關(guān)鍵器件之一是λ/4 波片。針對不完美λ/4 波片對系統(tǒng)的溫度補(bǔ)償作用,闡述了光纖電流互感器的原理,分析了傳感環(huán)的溫度特性,并給出了一組實(shí)驗(yàn)驗(yàn)證,實(shí)驗(yàn)結(jié)果表明,在沒有溫度補(bǔ)償算法的情況下,相位延遲約為108°的波片相對于標(biāo)準(zhǔn)的波片對比差變化范圍有0.9% 的改善,較大地提高了系統(tǒng)的性能。
關(guān)鍵詞:全光纖電流互感器;電力計(jì)量;λ/4 波片;溫度補(bǔ)償
中圖分類號:TM452 文獻(xiàn)標(biāo)識碼:A 文章編號:1007-3175(2019)01-0005-05
Study on Long-Term Temperature Stability Characteristics of Fiber Optical Current Transformer
HU Hao-liang1, HUANG Jun-chang1, XIA Li2, YAN Zhen-lin2, PENG Shen3
(1 China Electric Power Research Institute Co. Ltd, Wuhan 430074, China;
2 Huazhong University of Science and Technology , School of Optical and Electronic Information, Wuhan 430074, China;
3 Yangtze Optical Fiber and Cable Joint Stock Limited Company, Wuhan 430074, China)
Abstract: One of the key components of the transformer is the λ/4 wave plate. Aiming at the temperature compensation of the imperfect λ/4 wave plate to the system, this paper expounded the principle of optical current transformer, analyzed the temperature characteristic of sensing ring and gave a set of experimental verification. The experimental results show that without temperature compensation algorithm, there is 0.9% improvement on ratio error by replacing the standard wave plate with an imperfect λ/4 wave plate which has a phase delay of about 108°, so as to greatly improve the performance of the system.
Key words: fiber optical current transformer; power metering; λ/4 wave plate; temperature compensation
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