本文選題：高溫超導(dǎo) + 電能質(zhì)量��； 參考：《華北電力大學(xué)》2014年碩士論文

【摘要】：隨著全球經(jīng)濟(jì)的高速發(fā)展、生活水平的日益提升,人們生產(chǎn)、生活對(duì)電的需求越來越大,對(duì)電能的質(zhì)量要求也越來越嚴(yán)格。低損耗的輸變電、高質(zhì)量的電網(wǎng)保護(hù)是當(dāng)今社會(huì)的熱點(diǎn)問題。1913年9月華盛頓召開第三屆國際制冷會(huì)議上昂內(nèi)斯首次正式地提出了“超導(dǎo)態(tài)”。自1986年被發(fā)現(xiàn)至今,高溫超導(dǎo)(High Temperature Superconducting, HTS)在能源、電力、醫(yī)療、國防、信息等多方面展現(xiàn)出了重要的應(yīng)用價(jià)值。由于高溫超導(dǎo)電纜具有近乎無損的輸電能力以及高效的傳輸效率,高溫超導(dǎo)電纜在電力傳輸中對(duì)大電流、遠(yuǎn)距離輸電方面發(fā)揮重要作用。其中,高溫超導(dǎo)交流傳輸過程中的電能損耗是一個(gè)重要的研究課題。 本文首先介紹了高溫超導(dǎo)體的基本性質(zhì)及其應(yīng)用背景,主要針對(duì)高溫超導(dǎo)電纜在電力電子方面的實(shí)際應(yīng)用進(jìn)行研究。介紹高溫超導(dǎo)電纜的一般結(jié)構(gòu)和特性；理論推導(dǎo)超導(dǎo)電纜的載流特性,側(cè)重分析超導(dǎo)電纜的交流特性與交流傳輸?shù)膿p耗。 其次,推導(dǎo)和計(jì)算高溫超導(dǎo)電纜的等效電磁效應(yīng),通過大量文獻(xiàn)查閱和調(diào)研,理論推導(dǎo)和實(shí)驗(yàn)表明：超導(dǎo)電纜以各導(dǎo)體層的繞向角β、繞制方向a和導(dǎo)體層的半徑r為優(yōu)化對(duì)象,利用智能群體優(yōu)化算法進(jìn)行參數(shù)優(yōu)化可以有效降低交流損耗。 再次,針對(duì)高溫超導(dǎo)電纜各導(dǎo)電層中電流分配不均,產(chǎn)生較大的交流損耗,根據(jù)前文的理論推導(dǎo),以各層半徑、繞制方向和各導(dǎo)電層的繞向角分別作為待優(yōu)化對(duì)象,以各層電流均衡分布為優(yōu)化目標(biāo)建立函數(shù),用超導(dǎo)電纜的機(jī)械特性和臨界電流等要求作為約束條件,通過改進(jìn)的果蠅優(yōu)化方法,對(duì)電纜導(dǎo)電層進(jìn)行結(jié)構(gòu)參數(shù)優(yōu)化,并通過實(shí)驗(yàn)證明改進(jìn)算法的可行性。 最后,就超導(dǎo)電纜在實(shí)踐中的應(yīng)用及其發(fā)展趨勢(shì),簡要分析超導(dǎo)電纜的應(yīng)用領(lǐng)域,并對(duì)超導(dǎo)電纜發(fā)展進(jìn)行預(yù)測。同時(shí),也指出高溫超導(dǎo)電纜的不足。
[Abstract]:With the rapid development of the global economy and the improvement of living standards, the demand for electricity and the quality of electricity are becoming more and more stringent. Low loss power transmission and high quality power grid protection is a hot issue in the society. In September 1913, the third International Conference on Refrigeration was held in Washington, D.C., for the first time, the "superconducting state" was formally proposed by Annes. Since its discovery in 1986, High Temperature Superconducting (HTSs) has shown great application value in energy, electricity, medical, national defense, information and so on. High temperature superconducting cable (HTS) plays an important role in high current and long distance transmission because of its near lossless transmission capability and high efficiency. Among them, the power loss in high temperature superconducting AC transmission is an important research topic. In this paper, the basic properties and application background of high temperature superconductor are introduced, and the practical application of high temperature superconducting cable in power electronics is studied. This paper introduces the general structure and characteristics of HTS cable, deduces the current carrying characteristics of HTS cable theoretically, and emphasizes on the analysis of AC characteristics and AC transmission loss of HTS cable. Secondly, the equivalent electromagnetic effect of HTS cable is deduced and calculated. Through a large number of references and investigations, the theoretical and experimental results show that the superconducting cable takes the angle 尾 of each conductor layer, the winding direction a and the radius r of the conductor layer as the optimization object. Using the intelligent swarm optimization algorithm to optimize the parameters can effectively reduce the AC loss. Thirdly, in view of the uneven distribution of current in each conductive layer of HTS cable, resulting in a large AC loss, according to the theoretical derivation above, the radius of each layer, the direction of winding and the winding angle of each conducting layer are taken as the objects to be optimized, respectively. Taking the equilibrium distribution of electric current in each layer as the optimization objective, the structural parameters of the conductive layer of the cable are optimized by the improved Drosophila optimization method with the requirements of the superconducting cable such as mechanical characteristics and critical current as the constraint conditions. The feasibility of the improved algorithm is proved by experiments. Finally, the application of superconducting cable in practice and its development trend are briefly analyzed, and the development of superconducting cable is forecasted. At the same time, the deficiency of HTS cable is pointed out.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM75

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本文編號(hào)：1813311