發(fā)布時(shí)間：2018-05-23 20:42

  本文選題：真空斷路器 + 橫向磁場(chǎng)　； 參考：《沈陽(yáng)工業(yè)大學(xué)》2017年碩士論文

【摘要】：由于新能源、新原料、信息科技和電力電子的迅猛發(fā)展與普遍應(yīng)用,社會(huì)對(duì)電能需求、用電質(zhì)量及用電可靠性等提出更高的標(biāo)準(zhǔn),現(xiàn)有交流電力系統(tǒng)面臨負(fù)荷和電能需求多樣化、潮流均衡協(xié)調(diào)控制復(fù)雜化以及供電穩(wěn)定性與經(jīng)濟(jì)性等方面的新挑戰(zhàn)。隨著直流輸電技術(shù)的進(jìn)步與分布式新能源系統(tǒng)的發(fā)展,直流輸電系統(tǒng)的工程應(yīng)用日趨成熟。直流真空斷路器作為直流系統(tǒng)中控制與保護(hù)裝備,其絕緣與開(kāi)斷性能將直接影響其所在系統(tǒng)的安全可靠與穩(wěn)定運(yùn)行。本文在分析真空斷路器觸頭結(jié)構(gòu)與真空電弧磁場(chǎng)調(diào)控基礎(chǔ)上,提出新型混合磁場(chǎng)真空滅弧系統(tǒng)用觸頭結(jié)構(gòu),通過(guò)調(diào)控?cái)嗫趨^(qū)域磁場(chǎng)以實(shí)現(xiàn)對(duì)真空電弧的有效控制。基于杯狀橫磁(TMF)觸頭與杯狀縱磁(AMF)觸頭結(jié)構(gòu)與磁場(chǎng)特征分析,創(chuàng)建了嵌合型杯狀橫-縱磁觸頭模型,其內(nèi)部杯狀縱磁觸頭有利于保持觸頭中心區(qū)域電弧呈擴(kuò)散態(tài),外部杯狀橫磁觸頭產(chǎn)生磁吹力以有效逸散電弧能量,利于熄弧。通過(guò)對(duì)新型嵌合型橫-縱磁觸頭的觸頭中心平面以及觸頭表面的穩(wěn)態(tài)磁場(chǎng)以及剩余磁場(chǎng)分布數(shù)值計(jì)算,得到其與傳統(tǒng)杯狀觸頭的對(duì)比分析與定量描述。針對(duì)真空斷路器熄弧時(shí)刻,橫向磁場(chǎng)相比縱向磁場(chǎng)在弧區(qū)內(nèi)滯留時(shí)間短,逸散速度快的特點(diǎn),通過(guò)對(duì)螺旋槽橫磁觸頭與杯狀橫磁觸頭結(jié)構(gòu)分析,建立了同軸橫磁觸頭模型,提出內(nèi)螺旋槽觸頭突出結(jié)構(gòu),以減小閉合觸頭體電阻,減少發(fā)熱。通過(guò)對(duì)同軸橫磁觸頭極間電子密度仿真分析,提出電弧運(yùn)動(dòng)軌跡調(diào)控策略;建立場(chǎng)計(jì)算物理數(shù)學(xué)模型,進(jìn)行磁場(chǎng)及受力仿真計(jì)算;與傳統(tǒng)螺旋槽橫磁觸頭及杯狀橫磁觸頭進(jìn)行對(duì)比分析,以調(diào)控電弧運(yùn)動(dòng)軌跡。
[Abstract]:Due to the rapid development and widespread application of new energy, new raw materials, information technology and power electronics, society has put forward higher standards for electricity demand, power quality and power reliability. The current AC power system faces new challenges such as diversification of load and power demand, complexity of coordinated control of power flow equilibrium, and stability and economy of power supply. With the progress of HVDC technology and the development of distributed new energy system, the engineering application of HVDC system is becoming more and more mature. As the control and protection equipment in DC system, the insulation and breaking performance of DC vacuum circuit breaker will directly affect the safe, reliable and stable operation of its system. Based on the analysis of the contact structure of vacuum circuit breaker and the control of vacuum arc magnetic field, a new type of contact structure for vacuum arc extinguishing system with mixed magnetic field is proposed in this paper. The effective control of vacuum arc can be realized by adjusting the magnetic field of fracture area. Based on the analysis of the structure and magnetic field characteristics of cup type transverse magnetic contact (TMF) and cup shaped longitudinal magnetic (AMF) contact, a model of chimeric cup type transverse and longitudinal magnetic contact is established. The inner cup shaped longitudinal magnetic contact helps to keep the electric arc in the central region of the contact diffused. External cup-shaped transverse magnetic contact produces magnetic blowing force to effectively dissipate arc energy and is conducive to arc extinguishing. Through the numerical calculation of the distribution of the steady magnetic field and the residual magnetic field in the center plane of the contact and the contact surface of the new type of chimeric transverse and longitudinal magnetic contact, the comparison analysis and quantitative description between the contact surface and the traditional cup contact are obtained. In view of the characteristics that the transverse magnetic field has shorter retention time and faster dissipation speed than the longitudinal magnetic field in the arc region during the arc extinguishing time of the vacuum circuit breaker, a coaxial transverse magnetic contact model is established by analyzing the structure of the spiral groove transverse magnetic contact and the cup transverse magnetic contact. The protruding structure of the inner spiral groove contact is proposed to reduce the resistance of the closed contact and reduce the heat. Through the simulation and analysis of the electronic density between the poles of the coaxial transverse magnetic contact, the control strategy of arc motion trajectory is put forward, the physical mathematical model of field calculation is established, and the simulation calculation of magnetic field and force is carried out. Compared with the traditional spiral groove transverse magnetic contact and cup type transverse magnetic contact, the arc trajectory can be adjusted.
【學(xué)位授予單位】：沈陽(yáng)工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TM561.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 史宗謙;賈申利;;高壓直流斷路器研究綜述[J];高壓電器;2015年11期

2 何俊佳;袁召;趙文婷;方帥;喻新林;潘垣;;直流斷路器技術(shù)發(fā)展綜述[J];南方電網(wǎng)技術(shù);2015年02期

3 劉路輝;莊勁武;江壯賢;王晨;;混合型中壓直流真空斷路器的研究[J];高壓電器;2014年05期

4 高銀銀;方雨菡;;直流高速真空斷路器滅弧方案的仿真研究[J];電氣開(kāi)關(guān);2014年01期

5 馬釗;;直流斷路器的研發(fā)現(xiàn)狀及展望[J];智能電網(wǎng);2013年01期

6 湯廣福;羅湘;魏曉光;;多端直流輸電與直流電網(wǎng)技術(shù)[J];中國(guó)電機(jī)工程學(xué)報(bào);2013年10期

7 張娜;;直流電“復(fù)仇”[J];能源;2013年01期

8 王俊;鄭衛(wèi)紅;蔡超;;有源式高壓直流開(kāi)關(guān)原理及應(yīng)用[J];科技創(chuàng)業(yè)月刊;2012年08期

9 江壯賢;莊勁武;劉路輝;武瑾;王晨;吳紅江;;基于強(qiáng)迫換流原理的新型真空直流限流斷路器[J];海軍工程大學(xué)學(xué)報(bào);2012年03期

10 徐蓉;王玨;趙瑩;嚴(yán)萍;;縱磁結(jié)構(gòu)真空滅弧室電磁場(chǎng)及電弧運(yùn)動(dòng)特性[J];強(qiáng)激光與粒子束;2012年04期

相關(guān)會(huì)議論文 前1條

1 史宗謙;賈申利;劉償;宋曉川;馬明;楊宏毅;;基于人工過(guò)零法的真空直流開(kāi)斷研究[A];2010輸變電年會(huì)論文集[C];2010年

相關(guān)碩士學(xué)位論文 前2條

1 李仁峰;直流真空斷路器換流參數(shù)設(shè)計(jì)及磁特性研究[D];沈陽(yáng)工業(yè)大學(xué);2014年

2 朱世明;大電流真空電弧弧后介質(zhì)恢復(fù)研究[D];華中科技大學(xué);2012年

，

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