【摘要】：利用抽水蓄能電站對(duì)電力系統(tǒng)進(jìn)行調(diào)峰填谷,是提高電力系統(tǒng)經(jīng)濟(jì)性、可靠性的有效手段。抽水蓄能電機(jī)是抽水蓄能電站的重要部分,而阻尼繞組作為該種電機(jī)的重要組成部件,不僅可以抑制磁場(chǎng)突變和轉(zhuǎn)子振蕩,同時(shí)在抽水蓄能電機(jī)電動(dòng)工況下異步起動(dòng)時(shí)提供起動(dòng)力矩,其形狀和分布會(huì)影響電機(jī)的電磁性能和轉(zhuǎn)子各部件溫升,為此,研究阻尼繞組對(duì)電機(jī)電磁參數(shù)和溫度分布的影響具有重要意義。 本文綜合抽水蓄能電機(jī)實(shí)際結(jié)構(gòu)尺寸、額定工作參數(shù)和電磁場(chǎng)理論,建立二維有限元電機(jī)數(shù)學(xué)模型,對(duì)電機(jī)內(nèi)電磁場(chǎng)進(jìn)行求解,計(jì)算得到電機(jī)的電抗參數(shù)和阻尼繞組渦流損耗,利用解析公式計(jì)算轉(zhuǎn)子內(nèi)附加損耗,找出磁極表面和阻尼繞組的損耗分布規(guī)律。然后將有阻尼繞組電機(jī)與無(wú)阻尼繞組電機(jī)進(jìn)行比較,討論電機(jī)加入阻尼繞組后對(duì)轉(zhuǎn)子內(nèi)損耗分布和電抗參數(shù)的影響,并研究阻尼繞組在不對(duì)稱運(yùn)行工況下的渦流損耗變化,詳細(xì)討論分析阻尼條節(jié)距和直徑變化的相關(guān)影響,得到的結(jié)論可作為抽水蓄能電機(jī)阻尼繞組設(shè)計(jì)參考依據(jù)。最后,建立電機(jī)轉(zhuǎn)子三維流體場(chǎng)和溫度場(chǎng)的耦合計(jì)算模型,計(jì)算分析發(fā)電和電動(dòng)兩種工況額定負(fù)載下電機(jī)轉(zhuǎn)子范圍內(nèi)的流體和各結(jié)構(gòu)件溫度分布規(guī)律,并與實(shí)測(cè)值比較,驗(yàn)證計(jì)算有效性。在此基礎(chǔ)上,研究了阻尼繞組斷條故障對(duì)電抗參數(shù)、轉(zhuǎn)子內(nèi)損耗分布和溫度分布的影響。
[Abstract]:It is an effective means to improve the economy and reliability of the power system by using pumped storage power station to adjust the peak and fill the valley of the power system. Pumped storage motor is an important part of pumped storage power station, and damping winding, as an important component of this kind of motor, can not only restrain the sudden change of magnetic field and rotor oscillation. At the same time, when the motor starts asynchronously under the electric condition of pumped storage motor, the shape and distribution of the torque will affect the electromagnetic performance of the motor and the temperature rise of the components of the rotor. It is of great significance to study the influence of damping windings on the electromagnetic parameters and temperature distribution of the motor. In this paper, according to the actual structure size, rated working parameters and electromagnetic field theory of pumped storage motor, the mathematical model of two-dimensional finite element motor is established. The electromagnetic field in motor is solved, and the reactance parameters and eddy current loss of damped winding are calculated. An analytical formula is used to calculate the additional loss in the rotor, and the loss distribution law of the magnetic pole surface and damping winding is found out. Then, the damping winding motor is compared with the undamped winding motor, and the influence of the damping winding on the loss distribution and reactance parameters of the rotor is discussed, and the eddy current loss change of the damped winding under the asymmetrical operation condition is studied. The influence of damping bar pitch and diameter variation is discussed in detail. The conclusion can be used as a reference for damping winding design of pumped storage motor. Finally, the coupling calculation model of three-dimensional fluid field and temperature field of motor rotor is established, and the temperature distribution law of fluid and structure in the range of motor rotor under the rated load of power generation and electric power is calculated and analyzed, and compared with the measured value. Verify the validity of the calculation. On the basis of this, the influence of damped winding broken bar fault on reactance parameters, loss distribution and temperature distribution in rotor is studied.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TV743;TV734

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 李桂芬;孫玉田;張春莉;;抽水蓄能電機(jī)靜止變頻器起動(dòng)的仿真研究[J];大電機(jī)技術(shù);2010年03期

2 霍菲陽(yáng);李偉力;王冬梅;;大型水輪發(fā)電機(jī)阻尼條數(shù)對(duì)電磁參數(shù)和附加損耗的影響[J];電機(jī)與控制學(xué)報(bào);2011年05期

3 張滇生;陳濤;李永興;劉國(guó)剛;廖建東;林松斌;;日本抽水蓄能電站在電網(wǎng)中的作用研究[J];電力技術(shù);2010年01期

4 范鎮(zhèn)南;韓力;周光厚;侯小全;廖毅剛;;大型貫流式水輪發(fā)電機(jī)阻尼繞組損耗與發(fā)熱[J];高電壓技術(shù);2011年02期

5 廖旭升;徐加旺;胡華麗;楊鴻鋒;;水輪發(fā)電機(jī)轉(zhuǎn)子阻尼繞組燒傷的原因及處理[J];廣西水利水電;2009年02期

6 王斌;;同步電機(jī)瞬態(tài)和超瞬態(tài)電抗的有限元計(jì)算[J];上海大中型電機(jī);2011年03期

7 李偉力,周封,侯云鵬,程樹(shù)康;大型水輪發(fā)電機(jī)轉(zhuǎn)子溫度場(chǎng)的有限元計(jì)算及相關(guān)因素的分析[J];中國(guó)電機(jī)工程學(xué)報(bào);2002年10期

8 李偉力;靳慧勇;丁樹(shù)業(yè);熊斌;;大型同步發(fā)電機(jī)定子多元流場(chǎng)與表面散熱系數(shù)數(shù)值計(jì)算與分析[J];中國(guó)電機(jī)工程學(xué)報(bào);2005年23期

9 李俊卿;;采用混合單元的汽輪發(fā)電機(jī)定子溫度場(chǎng)的分析與計(jì)算[J];中國(guó)電機(jī)工程學(xué)報(bào);2009年18期

10 李偉力;陳玉紅;霍菲陽(yáng);張奕黃;;大型水輪發(fā)電機(jī)轉(zhuǎn)子旋轉(zhuǎn)狀態(tài)下磁極間流體流動(dòng)與溫度場(chǎng)分析[J];中國(guó)電機(jī)工程學(xué)報(bào);2012年09期

，

本文編號(hào)：2445528