本文選題：UPFC　切入點：串聯(lián)耦合變壓器　出處：《電網(wǎng)技術(shù)》2017年02期 　論文類型：期刊論文

【摘要】：根據(jù)UPFC系統(tǒng)中串聯(lián)耦合變壓器的功能,分析了其特殊的工作方式和特點,并給出了220 k V輸電線路中串聯(lián)耦合變壓器的一種殼式結(jié)構(gòu)方案。根據(jù)串聯(lián)耦合變壓器鐵芯和繞組的空間幾何結(jié)構(gòu),采用電路與磁路的對偶原理,將磁路模型轉(zhuǎn)化為電路模型�？紤]到硅鋼片的非線性飽和特性,采用復數(shù)磁導率計及渦流效應,以非線性電感和電阻來等效硅鋼片,分析了頻率和磁導率對硅鋼片等效參數(shù)的影響�；诖怕贩ㄌ崛÷└袇�(shù),建立了串聯(lián)耦合變壓器的仿真電路模型。在低壓物理樣機上進行空載合閘和三相不對稱直流偏磁的試驗與仿真計算,測量結(jié)果與計算結(jié)果基本吻合,表明了所建模型適用于串聯(lián)耦合變壓器暫態(tài)模擬與不對稱直流偏磁特性的分析。
[Abstract]:According to the function of series-coupled transformer in UPFC system, the special working mode and characteristics are analyzed. A kind of shell structure scheme of series-coupled transformer in 220kV transmission line is given. According to the spatial geometry of the core and winding of the series-coupled transformer, the dual principle of circuit and magnetic circuit is adopted. The magnetic circuit model is transformed into the circuit model. Considering the nonlinear saturation characteristics of silicon steel sheet, the complex permeability meter and eddy current effect are used to equivalent silicon steel sheet with nonlinear inductance and resistance. The influence of frequency and permeability on the equivalent parameters of silicon steel sheet is analyzed. The simulation circuit model of series-coupled transformer is established. The experiment and simulation calculation of no-load switching and three-phase asymmetrical DC bias are carried out on the low-voltage physical prototype. The measured results are in good agreement with the calculated results. It is shown that the proposed model is suitable for transient simulation of series coupled transformers and analysis of asymmetric DC bias characteristics.
【作者單位】： 新能源電力系統(tǒng)國家重點實驗室(華北電力大學);全球能源互聯(lián)網(wǎng)研究院;
【基金】：國家863高技術(shù)基金項目(2012AA050401) 國家電網(wǎng)公司科技項目(SGRI-DL-71-12-005) 國家自然科學基金項目(51277064)~~
【分類號】：TM41;TM761

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本文編號：1632030