發(fā)布時(shí)間：2018-05-23 22:15

  本文選題：光學(xué)電流互感器 + 全光纖電流傳感�。� 參考：《天津大學(xué)》2014年碩士論文

【摘要】：目前對(duì)于光學(xué)電流互感器(OCS)的研究正處于一個(gè)瓶頸階段,自身的雙折射和溫度影響因素一直難以得到解決。也是導(dǎo)致光學(xué)電流互感器難以在實(shí)用中推廣的重要原因。很多高校和研究所均在進(jìn)一步進(jìn)行相關(guān)的實(shí)驗(yàn)和理論研究,但擁有真正實(shí)用價(jià)值的突破卻鮮有報(bào)道。而光學(xué)電流互感器相比于傳統(tǒng)電子互感器存在著諸多優(yōu)點(diǎn),這使其未來在電力部門的應(yīng)用前景十分廣闊,也被人們所看好。針對(duì)此種情況,本課題組決定也參與到光學(xué)互感器的研制過程中來,希望能有所創(chuàng)新和突破。本文主要工作內(nèi)容包含以下三個(gè)部分:(1)本文主要研究了是棒狀磁光玻璃型光學(xué)電流互感器(MOCS)。完成了實(shí)驗(yàn)系統(tǒng)的搭建,和針對(duì)磁光玻璃型傳感頭進(jìn)行的一些應(yīng)用前期實(shí)驗(yàn)驗(yàn)證。實(shí)驗(yàn)系統(tǒng)的搭建包括硬件系統(tǒng)的建立和基于labview的信號(hào)處理軟件編寫。構(gòu)建一套完善的大電流仿真系統(tǒng)。進(jìn)行了傳感器的重復(fù)性、測(cè)量范圍、靈敏度和光源功率影響情況的基本性能實(shí)驗(yàn)。給出了傳感器相關(guān)基本參數(shù)。并進(jìn)行傳感器與外界環(huán)境溫度變化關(guān)系的實(shí)驗(yàn)探究,給出了傳感器輸出與磁場(chǎng)變化、溫度變化三者之間的明確變化數(shù)學(xué)模型。提出溫度補(bǔ)償?shù)慕鉀Q方法。(2)本文不僅僅研究了磁光玻璃型光學(xué)電流互感器的信號(hào)處理,而且還對(duì)全光纖電流測(cè)量方法進(jìn)行了創(chuàng)新性的研究。利用新型材料磁流體(MF)與單模-多模-單模光纖結(jié)構(gòu)(SMS)相結(jié)合,制作了基于磁流體和單模-多模-單模結(jié)構(gòu)的新型全光纖電流傳感器(AFOCS)。該電流傳感方式是完全利用輸出功率衰減進(jìn)行測(cè)量,不僅簡(jiǎn)化了信號(hào)處理方法,更重要的是在光學(xué)電流傳感領(lǐng)域提出了新的研究方向。研究初期采用的是直通型的傳感器,尋找到合適的傳感波長(zhǎng),然后利用窄帶激光器搭建了一套完整的電流檢測(cè)系統(tǒng)。后期又對(duì)系統(tǒng)進(jìn)行了改進(jìn),為了提高傳感靈敏度,將直通型傳感器改為反射型,為了提高系統(tǒng)穩(wěn)定性,將原先的窄帶激光改為高斯型的寬帶光源,并從原理仿真上驗(yàn)證實(shí)驗(yàn)原理的正確性。還對(duì)傳感器的安裝角度問題進(jìn)行了實(shí)驗(yàn)驗(yàn)證,證明當(dāng)傳感器的軸向與磁場(chǎng)方向垂直的時(shí)候,傳感器測(cè)量靈敏度最大。(3)給出了兩種電流傳感方式的一個(gè)整體比較。包括檢測(cè)原理不同所帶來的信號(hào)處理方式的不同和影響其性能因素的不同;在將來實(shí)際應(yīng)用中兩種傳感器的檢測(cè)對(duì)象也有所差別,磁光玻璃型的電流互感器對(duì)交直流都可以檢測(cè),而磁流體型目前的研究只能認(rèn)為其可以進(jìn)行高壓直流檢測(cè),交流還是受到限制。但我們相信隨著團(tuán)隊(duì)的研究深入,交流也是可以突破的。
[Abstract]:At present, the research of optical current transformer (OCS) is at a bottleneck stage, its birefringence and temperature influence factors have been difficult to solve. It is also an important reason that the optical current transformer is difficult to be popularized in practice. Many universities and research institutes are carrying out further experimental and theoretical research, but the breakthrough with real practical value is rarely reported. Compared with the traditional electronic transformer, the optical current transformer has many advantages, which makes its future application in the power sector very broad, and is also favored by people. In view of this situation, our group decided to participate in the development of optical transformers, hoping to be innovative and breakthrough. The main work of this paper includes the following three parts: 1) in this paper, we mainly study the rod magneto-optic glass optical current transformer (MOCSN). The experimental system is built, and some preliminary experiments on magneto-optic glass sensor head are carried out. The construction of the experimental system includes the establishment of the hardware system and the programming of the signal processing software based on labview. Build a set of perfect high current simulation system. The basic performance experiments of the repeatability, measurement range, sensitivity and power of light source are carried out. The basic parameters of the sensor are given. The relationship between the sensor and the ambient temperature is studied experimentally, and the mathematical model of the change of the sensor output, the magnetic field and the temperature is given. In this paper, not only the signal processing of magneto-optic glass optical current transformer is studied, but also the all optical fiber current measurement method is studied innovatively. A novel all-fiber current sensor based on magnetofluid and single-mode-multimode single-mode current sensor (AFOCSS) has been fabricated by combining a new type of MHD with a single-mode multimode single-mode optical fiber structure (SMSs) and a novel all-fiber current sensor based on magnetofluid and single-mode multi-mode single-mode structure. It not only simplifies the signal processing method, but also puts forward a new research direction in the field of optical current sensing. At the beginning of the study, a straight through sensor is used to find the appropriate wavelength, and then a complete current detection system is built by using a narrow band laser. In the later period, the system was improved. In order to improve the sensitivity of the sensor, the straight-through type sensor was changed to the reflective type. In order to improve the stability of the system, the narrow band laser was changed to the Gao Si type broadband light source. The correctness of the experimental principle is verified by the simulation of the principle. The experimental results show that when the sensor is perpendicular to the direction of the magnetic field, the sensitivity of the sensor is maximum. 3) an overall comparison of the two current sensing methods is given. Including different signal processing methods brought by different detection principles and different factors affecting their performance; the detection objects of the two kinds of sensors will also be different in practical applications in the future. The current transformer of magneto-optic glass can detect both AC and DC, but the current research of MHD can only consider that it can be detected by HVDC, but the AC is still limited. But we believe that with the team's in-depth research, communication is also possible to break through.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP212;TM45

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