基于STATCOM-PSS控制對風(fēng)電并網(wǎng)系統(tǒng)暫態(tài)穩(wěn)定性的改善研究
[Abstract]:With a large number of fluctuating wind power injected into the power grid, the stability of the original system is greatly threatened, which seriously hinders the further development of wind power generation. Therefore, how to improve the stability of wind power grid connection and reduce the impact of wind power access to the grid has become a hot topic in the field of wind power generation. Based on the current development of wind power and its grid-connected protocol, this paper analyzes its control method and operation characteristics by mathematical modeling for two kinds of wind power generators: doubly-fed and fixed-speed wind generators. Finally, through modeling and simulation, the effectiveness of the proposed method to improve the stability of wind power grid is verified, and a series of innovative and practical research results are obtained. The main contents of this paper are summarized as follows: 1. The principle and operation characteristics of doubly fed wind power system and constant speed wind power system are analyzed. By establishing the mathematical model of the doubly-fed wind turbine in the three-phase static and two-phase rotating coordinate system, the commonly used control strategies are analyzed, and the control method based on stator flux oriented vector control is proposed. At the same time, by establishing the mathematical model of back-to-back converter and analyzing its control strategy, a voltage oriented control method based on power grid is proposed for grid-side converter. Finally, the simulation models of doubly-fed and fixed-speed wind power grid-connected systems are established by the simulation platform, and the simulation results under different operating conditions are analyzed to verify the validity of the proposed control method and the correctness of the theoretical analysis. 2. The principle of static synchronous compensator (STATCOM,Static Synchronous Compensator) is analyzed theoretically and simulated. By studying the mathematical model and circuit structure established by STATCOM, it is theoretically analyzed that it can effectively compensate the reactive power vacancy of the system. Finally, the infinite simulation model of STATCOM direct current control system is established on the simulation platform. The simulation results show that STATCOM is effective in reactive power compensation and power quality improvement. In view of the stability problem of wind power generation integrated into power grid system, a new STATCOM-PSS control measure is put forward, in which the input STATCOM device is combined with the power system stabilizer (PSS,Power System Stabilizer). By analyzing the application of STATCOM-PSS control in grid-connected wind power system, the simulation model of grid-connected system for double-fed wind power generation and grid-connected system for fixed-speed wind turbine is established in the simulation platform. According to the different conditions in the actual operation of the wind farm, the simulation experiment is carried out. Compared with the constant speed wind turbine, the advantages of doubly-fed wind turbine in fault traversing ability and mitigating the impact of fluctuating wind power injection into the power network are more obvious. The results show that the doubly-fed wind turbine will be widely used in wind farm construction. At the same time, the simulation results of only STATCOM, with PSS, and STATCOM-PSS without STATCOM-PSS are analyzed and discussed in detail. The existence of STATCOM can provide sufficient reactive power compensation capacity for the system. PSS has damping function and PSS can adjust the power angle stability of the system and alleviate the oscillation of the system. When the STATCOM-PSS control is put into use, the stability of the two wind turbines can be improved more obviously, and the fault voltage can be recovered quickly, and the fault traversing ability of the wind farm can be improved. Improve the transient stability and power quality of wind power grid-connected system.
【學(xué)位授予單位】:湖南工業(yè)大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TM614;TM712
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 匡洪海;張曙云;曾麗瓊;雷敏;;STATCOM-PSS控制對風(fēng)電并網(wǎng)系統(tǒng)穩(wěn)定性和電能質(zhì)量的改善[J];電源學(xué)報(bào);2015年03期
2 劉純;石文輝;趙海翔;;中國風(fēng)電并網(wǎng)標(biāo)準(zhǔn)與國外同類標(biāo)準(zhǔn)比較[J];智能電網(wǎng);2014年09期
3 孫紅星;何德剛;吳文波;;基于鏈?zhǔn)絊VG三相不平衡負(fù)荷的平衡補(bǔ)償方法的仿真分析[J];自動(dòng)化技術(shù)與應(yīng)用;2014年06期
4 陳延云;戴申華;王銳;;含雙饋風(fēng)電機(jī)組的系統(tǒng)阻尼優(yōu)化研究[J];電氣技術(shù);2013年12期
5 馮楠;郭李娟;符金偉;馬進(jìn);;電力系統(tǒng)穩(wěn)定器研究綜述[J];陜西電力;2013年11期
6 戴慧珠;遲永寧;;國內(nèi)外風(fēng)電并網(wǎng)標(biāo)準(zhǔn)比較研究[J];中國電力;2012年10期
7 付小偉;王進(jìn);郭偉;鄭劍武;;風(fēng)電集中并網(wǎng)運(yùn)行對系統(tǒng)電壓穩(wěn)定性的影響研究[J];電氣技術(shù);2012年08期
8 張永明;史偉偉;;風(fēng)力發(fā)電機(jī)低電壓穿越技術(shù)發(fā)展現(xiàn)狀[J];電機(jī)與控制應(yīng)用;2012年07期
9 楊秋季;;風(fēng)電場接入系統(tǒng)對電網(wǎng)的影響分析[J];機(jī)電技術(shù);2012年03期
10 范心明;何健明;管霖;;風(fēng)力發(fā)電新技術(shù)及并網(wǎng)穩(wěn)定問題[J];電氣應(yīng)用;2012年08期
相關(guān)博士學(xué)位論文 前4條
1 趙梅花;雙饋風(fēng)力發(fā)電系統(tǒng)控制策略研究[D];上海大學(xué);2014年
2 匡洪海;分布式風(fēng)電并網(wǎng)系統(tǒng)的暫態(tài)穩(wěn)定及電能質(zhì)量改善研究[D];湖南大學(xué);2013年
3 付超;風(fēng)電并網(wǎng)的無功優(yōu)化控制及其數(shù);旌戏抡嫜芯縖D];華北電力大學(xué);2012年
4 吳復(fù)霞;電力系統(tǒng)低頻振蕩的分析和控制[D];浙江大學(xué);2007年
相關(guān)碩士學(xué)位論文 前10條
1 張婷;風(fēng)電波動(dòng)實(shí)時(shí)平抑中的混合儲(chǔ)能系統(tǒng)控制策略及容量配置方法研究[D];浙江大學(xué);2015年
2 林志艷;福州地區(qū)風(fēng)電并網(wǎng)問題與對策研究[D];福州大學(xué);2013年
3 胡文;雙饋風(fēng)力發(fā)電機(jī)系統(tǒng)及并網(wǎng)研究[D];湖南工業(yè)大學(xué);2013年
4 甄佳寧;雙饋感應(yīng)風(fēng)力發(fā)電機(jī)低電壓穿越控制策略研究[D];天津大學(xué);2012年
5 楊普;基于STATCOM技術(shù)的風(fēng)電場電壓穩(wěn)定性研究[D];華北電力大學(xué);2013年
6 孟磊;大規(guī)模雙饋型風(fēng)電場異常脫網(wǎng)特性分析[D];東北電力大學(xué);2011年
7 程昱舒;雙饋風(fēng)力發(fā)電機(jī)組的建模及其并網(wǎng)研究[D];太原理工大學(xué);2010年
8 韓洪;含STATCOM的風(fēng)電場電壓穩(wěn)定性研究[D];山東大學(xué);2009年
9 董平;基于功能論的大型風(fēng)能發(fā)電機(jī)部件設(shè)計(jì)研究[D];合肥工業(yè)大學(xué);2009年
10 鄧科;PSS在抑制電力系統(tǒng)低頻振蕩上的研究[D];蘭州理工大學(xué);2008年
,本文編號:2417940
本文鏈接:http://sikaile.net/kejilunwen/dianlidianqilunwen/2417940.html