發(fā)布時間：2018-08-06 12:35

【摘要】：隨著我國風電裝機容量和鐵路網(wǎng)規(guī)模的不斷擴大,很多地區(qū)出現(xiàn)電氣化鐵路與風電集中接入電網(wǎng)同一公共連接點的情況,由此引發(fā)了一系列的問題,尤其是電鐵的電能質(zhì)量問題對風電機組穩(wěn)定運行的影響值得關(guān)注。本文通過在Matlab/Simulink平臺建立模型,仿真研究高速鐵路和含風電的電力系統(tǒng)之間相互影響。主要內(nèi)容如下:首先,介紹高速鐵路牽引供電系統(tǒng),包括牽引變壓器、AT供電方式、全并聯(lián)復(fù)線AT供電方式牽引網(wǎng)及其建模方法;結(jié)合實際量測數(shù)據(jù)分析高鐵牽引供電系統(tǒng)的負荷特性,并闡述電氣化鐵路引起的諧波和負序問題對風電機組的影響。然后,介紹高速列車牽引傳動系統(tǒng)。先總體介紹交流牽引傳動技術(shù);然后介紹二電平四象限脈沖整流器;基于列車牽引計算和牽引-制動特性曲線,給出變流器直流環(huán)節(jié)等效電流負荷的計算方法;結(jié)合SPWM調(diào)制原理和調(diào)制度的定義,給出計及載波幅值的瞬態(tài)直接電流控制策略,明確了調(diào)制波幅值的比例系數(shù)計算原理。建立電鐵和風電集中接入電網(wǎng)的仿真模型,包括基于LX高鐵NRF牽引變電所的牽引供電系統(tǒng)模型、CRH5型高速列車變流器直流環(huán)節(jié)等效電流負荷模型和含風電的電力系統(tǒng)模型。最后,利用電鐵和風電集中接入電網(wǎng)的模型進行仿真研究,驗證了高鐵牽引供電系統(tǒng)的負荷特性;分析了電鐵接入、列車不同運行速度下和再生制動工況下電鐵對含風電的電力系統(tǒng)的影響,以及在不同的風電場規(guī)模和風速下,電鐵和含風電的電力系統(tǒng)之間的相互影響;并對抑制影響的措施進行簡要的探討。
[Abstract]:With the continuous expansion of wind power capacity and railway network in China, many areas have the same public connection point of electrified railway and wind power, which has caused a series of problems. Especially, the influence of electric power quality on the steady operation of wind turbine is worthy of attention. In this paper, the interaction between high speed railway and wind power system is simulated by building a model on Matlab/Simulink platform. The main contents are as follows: firstly, the traction power supply system of high-speed railway is introduced, including the AT power supply mode of traction transformer, the AT power supply network of all parallel double lines and its modeling method. Combined with the actual measurement data, the load characteristics of the traction power supply system are analyzed, and the influence of the harmonic and negative sequence problems caused by the electrified railway on the wind turbine is expounded. Then, the traction transmission system of high speed train is introduced. First, the AC traction drive technology is introduced, then the two-level four-quadrant pulse rectifier is introduced. Based on the train traction calculation and tractor-braking characteristic curve, the equivalent current load of DC link of the converter is calculated. Combined with the definition of SPWM modulation principle and modulation system, the transient direct current control strategy with carrier amplitude is given, and the calculation principle of the ratio coefficient of modulation amplitude is defined. The simulation model of centralized connection of electric railway and wind power to the power network is established, including the traction power supply system model based on LX high-speed rail NRF traction substation and the equivalent current load model of DC link of converter of CRH5 high-speed train and the power system model with wind power. Finally, the load characteristics of the high speed traction power supply system are verified by using the model of centralized connection of electric rail and wind power to the power network, and the electric rail access is analyzed. The influence of electric rail on the power system with wind power under different operating speeds and regenerative braking conditions, and the interaction between electric rail and power system with wind power under different wind farm scale and wind speed; The measures to restrain the influence were also discussed briefly.
【學位授予單位】：西南交通大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM743

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本文編號：2167751