【摘要】：重載和高速鐵路是我國鐵路今后的主要發(fā)展方向,目前我國重載鐵路采用的機(jī)車主要是交直型電力機(jī)車,其控制方式采用相控整流方式,機(jī)車在從電網(wǎng)獲取電能的同時(shí)也會產(chǎn)生3、5、7次等低次諧波,經(jīng)過牽引網(wǎng)注入到電力系統(tǒng)中。牽引網(wǎng)是分布參數(shù)元件,諧波電流經(jīng)過牽引網(wǎng)時(shí)會發(fā)生諧振,使諧波電流成倍增加,造成過電壓,影響供電設(shè)備的安全穩(wěn)定運(yùn)行。本文重點(diǎn)對牽引供電系統(tǒng)諧振特性、電力系統(tǒng)和牽引供電系統(tǒng)機(jī)電-電磁暫態(tài)混合仿真以及牽引供電系統(tǒng)電能質(zhì)量綜合治理進(jìn)行了研究。 在仿真研究牽引供電系統(tǒng)諧振特性時(shí),通常采用諧波潮流仿真方法,此時(shí)需要對牽引供電系統(tǒng)仿真模型進(jìn)行一定的簡化,通常只對牽引網(wǎng)進(jìn)行建模,而機(jī)車則簡化為電流源,不考慮機(jī)車和牽引網(wǎng)之間的耦合關(guān)系。本文利用PSCAD/EMTDC建立韶山4型電力機(jī)車電磁暫態(tài)仿真模型,并將其仿真結(jié)果與相關(guān)理論值進(jìn)行對比,驗(yàn)證了所建立機(jī)車模型的正確性。然后根據(jù)已有的牽引網(wǎng)仿真模型建立方法建立了機(jī)車-牽引網(wǎng)-等值電網(wǎng)電磁暫態(tài)仿真模型,仿真研究車網(wǎng)耦合下機(jī)車位置、機(jī)車數(shù)量和牽引網(wǎng)長度對牽引供電系統(tǒng)諧振特點(diǎn)和注入電力系統(tǒng)電流諧波含量的影響。 在對牽引供電系統(tǒng)建模時(shí),通常采用電磁暫態(tài)仿真,在仿真時(shí)需要對電力系統(tǒng)部分進(jìn)行等值簡化,將其等效為三相電壓源。本文利用ADPSS仿真軟件機(jī)電-電磁暫態(tài)混合仿真功能,在己建立好的機(jī)車-牽引網(wǎng)-等值電網(wǎng)電磁暫態(tài)仿真模型的基礎(chǔ)上建立機(jī)車-牽引網(wǎng)-實(shí)際電網(wǎng)機(jī)電暫態(tài)-電磁暫態(tài)混合仿真模型,仿真對比兩種仿真模型的差異,仿真結(jié)果表明在研究牽引供電系統(tǒng)諧波特性時(shí),電力系統(tǒng)部分簡化等值為三相電壓源對仿真結(jié)果的準(zhǔn)確性影響不大；本文建立的實(shí)際電力系統(tǒng)和牽引供電系統(tǒng)機(jī)電-電磁暫態(tài)混合仿真模型為牽引供電系統(tǒng)仿真分析提供了一種新的仿真思路。 最后本文研究了TCR+FC型SVC無功補(bǔ)償和濾除諧波工作原理和三相不平衡負(fù)荷補(bǔ)償原理,利用PSCAD/EMTDC建立了單相TCR+FC型SVC和基于三相不平衡負(fù)荷補(bǔ)償原理的三相TCR+FC型SVC。仿真比較了兩種補(bǔ)償方法對牽引供電系統(tǒng)諧波、負(fù)序和無功綜合補(bǔ)償效果。
[Abstract]:Heavy load and high speed railway are the main development direction of China's railway in the future. At present, the main locomotive used in the heavy haul railway in our country is the direct type electric locomotive. Its control mode adopts the phase controlled rectification mode. The locomotive can generate the 3,5,7 secondary low order harmonics at the same time from the power grid, and the traction network is injected into the power system. It is a distributed parameter element. The harmonic current will resonate when it passes the traction network, which makes the harmonic current multiplied, causing overvoltage and affecting the safe and stable operation of the power supply equipment. This paper focuses on the resonant characteristics of the traction power supply system, the electromechanical electromagnetic transient simulation of the power system and the traction power supply system, and the power quality of the traction power supply system. Comprehensive management has been studied.
In the simulation of the resonant characteristics of the traction power supply system, the harmonic flow simulation method is usually used. At this time, the simulation model of the traction power supply system needs to be simplified, usually only the traction network is modeled, and the locomotive is simplified as the current source, and the coupling relationship between the locomotive and the traction network is not considered. This paper uses the PSCAD/EMTDC to establish the Shaoguan. The electromagnetic transient simulation model of mountain 4 electric locomotive is compared with the relevant theoretical values, and the correctness of the locomotive model is verified. Then the electromagnetic transient simulation model of locomotive traction network equivalent power grid is established according to the existing simulation model of traction network, and the simulation study of locomotive network coupling under the locomotive position is carried out. The influence of the number of vehicles and the length of traction network on the resonant characteristics of traction power supply system and the current harmonic content of injected power system are also studied.
When modeling the traction power supply system, the electromagnetic transient simulation is usually used. In the simulation, the part of the power system needs to be simplified to be equivalent to the three-phase voltage source. In this paper, the foundation of the simulation model of the electromagnetic transient simulation model of the locomotive traction network - equivalent power grid is established by using the ADPSS simulation software. On the basis of the model, a hybrid simulation model of locomotive traction network - real power system electromechanical transient electromagnetic transient is established, and the difference between the two simulation models is compared. The simulation results show that in the study of the harmonic characteristics of the traction power supply system, the simplified equivalent of the power system has little effect on the accuracy of the simulation results. The hybrid electromechanical-electromagnetic transient simulation model of power system and traction power supply system provides a new simulation method for the simulation analysis of traction power supply system.
At last, this paper studies the principle of TCR+FC SVC reactive power compensation and harmonic elimination and three-phase unbalanced load compensation, and uses PSCAD/EMTDC to establish a single-phase TCR+FC SVC and three-phase TCR+FC based SVC. simulation based on the principle of three-phase unbalanced load compensation, and compares the harmonic, negative and reactive power synthesis of the two compensation methods to the traction power supply system. Compensation effect.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM922.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 謝玉成;;基于TCR+FC型電鐵電能質(zhì)量治理裝置研究及應(yīng)用[J];電測與儀表;2010年02期

2 張定華;桂衛(wèi)華;王衛(wèi)安;王小方;;新型電氣化鐵道電能質(zhì)量綜合補(bǔ)償系統(tǒng)的研究及工程應(yīng)用[J];電工技術(shù)學(xué)報(bào);2009年03期

3 冀魯豫;吳俊勇;孫建華;胡楊宇;付紅軍;張西魯;宋洪磊;;電力系統(tǒng)諧波與不平衡分布的計(jì)算方法與實(shí)現(xiàn)[J];電工技術(shù)學(xué)報(bào);2011年S1期

4 韋啟鋒;;電氣化鐵路牽引供電對電網(wǎng)的影響及其應(yīng)對措施[J];電工技術(shù);2011年09期

5 霍長龍;;基于實(shí)測數(shù)據(jù)的重載電氣化鐵路電能質(zhì)量分析[J];電力學(xué)報(bào);2012年01期

6 李建華,豆鳳梅,夏道止;韶山Ⅳ型電力機(jī)車諧波電流的分析計(jì)算[J];電力系統(tǒng)自動化;1999年16期

7 張樹卿;梁旭;童陸園;洪潮;;電力系統(tǒng)電磁/機(jī)電暫態(tài)實(shí)時(shí)混合仿真的關(guān)鍵技術(shù)[J];電力系統(tǒng)自動化;2008年15期

8 郎兵;吳命利;;牽引網(wǎng)諧波模型及其仿真計(jì)算[J];電力系統(tǒng)自動化;2009年17期

9 劉劍;黃小慶;曹一家;黎燦兵;;三相SVC在電氣化鐵路電能質(zhì)量治理中的應(yīng)用[J];電力系統(tǒng)及其自動化學(xué)報(bào);2011年06期

10 朱紅萍;羅隆福;;新型電氣化鐵道電能質(zhì)量綜合治理裝置[J];電力自動化設(shè)備;2011年07期

相關(guān)碩士學(xué)位論文 前1條

1 劉麗莉;SVC不平衡補(bǔ)償下的諧波分析[D];華北電力大學(xué);2013年

，

本文編號：2170349