本文選題：光纖電流互感器 + 法拉第效應(yīng)��； 參考：《中國電機(jī)工程學(xué)報(bào)》2017年12期

【摘要】：光纖電流傳感器在電力電流測量領(lǐng)域具有廣泛的應(yīng)用潛力,其中電流傳感光纖的性能是制約光纖電流傳感器穩(wěn)定性的關(guān)鍵因素。針對當(dāng)前構(gòu)成電流傳感光纖的主要組成部分光纖波片與傳感光纖存在性能一致性與穩(wěn)定性差的問題,設(shè)計(jì)并制作了一種特殊螺旋高雙折射保橢圓光纖用作電流傳感光纖,可以有效地解決電流傳感光纖存在的這些問題。先介紹該特殊光纖的結(jié)構(gòu),根據(jù)耦合模理論對其傳感功能、抗干擾能力進(jìn)行了理論分析。利用該光纖研制了光纖電流傳感器,并對其測量精度、抗振動特性等進(jìn)行了檢測。測試結(jié)果表明,該光纖電流傳感器采用40m/s~2加速度持續(xù)振動的8h內(nèi),電流傳感器測量比差保持在±0.05%,具有較強(qiáng)的抗干擾能力;在-40℃~70℃的溫度范圍內(nèi)以及額定1200A的測量電流下,測量比差與相差分別在±0.05%與±1′以內(nèi);在頻率為0~1500Hz內(nèi)的測試電流下,電流傳感的精度在±0.2%以內(nèi)。采用該特殊螺旋高雙折射光纖所制作的高精度和高穩(wěn)定性光纖電流傳感器,在±800k V靈州換流站成功掛網(wǎng)運(yùn)行。
[Abstract]:Fiber optic current sensor has wide application potential in the field of electric current measurement, and the performance of current sensing fiber is the key factor that restricts the stability of optical fiber current sensor. Aiming at the problem of the consistency and stability between the optical fiber and the sensing fiber which are the main components of the current sensing fiber, a special spiral high birefringence elliptic preserving fiber is designed and fabricated as the current sensing fiber. These problems of current sensing fiber can be solved effectively. Firstly, the structure of the special fiber is introduced, and the sensing function and anti-jamming ability of the fiber are analyzed theoretically according to the coupling mode theory. The optical fiber current sensor is developed, and its measuring accuracy and vibration resistance are tested. The test results show that the measurement ratio of the fiber optic current sensor keeps at 鹵0.05 within 8 hours after the continuous vibration of the 40m/s~2 accelerometer, and it has strong anti-interference ability in the temperature range of -40 鈩，

本文編號：1911875