本文選題：無(wú)功補(bǔ)償裝置 + 對(duì)稱跌落��； 參考：《合肥工業(yè)大學(xué)》2017年碩士論文

【摘要】：隨著新能源產(chǎn)業(yè)的快速發(fā)展和大規(guī)模并網(wǎng),其自身的隨機(jī)性、間歇性等特點(diǎn)也帶來(lái)了諸如電網(wǎng)電壓閃變、波動(dòng)等問(wèn)題。其中一種較好的解決方案就是采用無(wú)功補(bǔ)償技術(shù)。以風(fēng)電機(jī)組為例,其自身的無(wú)功補(bǔ)償能力有限,特別是在低電壓穿越運(yùn)行的過(guò)程中,需加裝額外的無(wú)功補(bǔ)償裝置才能滿足電網(wǎng)對(duì)于無(wú)功補(bǔ)償?shù)囊�。因�?對(duì)于無(wú)功補(bǔ)償裝置低電壓穿越運(yùn)行控制策略的研究具有重要的現(xiàn)實(shí)意義。目前新能源電站中應(yīng)用最廣泛的無(wú)功補(bǔ)償裝置主要為SVC(靜止無(wú)功補(bǔ)償器)和SVG(靜止無(wú)功發(fā)生器)兩種。本文主要針對(duì)SVG研究其低電壓穿越運(yùn)行控制策略,分為電網(wǎng)電壓對(duì)稱跌落和不對(duì)稱跌落兩種情況。本文首先介紹了SVC和SVG的基本補(bǔ)償特性及基本控制策略,為無(wú)功補(bǔ)償裝置低電壓穿越控制系統(tǒng)的研究提供了理論支持。其次對(duì)SVG在電網(wǎng)電壓對(duì)稱跌落下的控制策略進(jìn)行研究,明確對(duì)稱跌落下的控制目標(biāo),分析SVG無(wú)功補(bǔ)償對(duì)電網(wǎng)電壓支撐的效果。再次,對(duì)SVG在電網(wǎng)電壓不對(duì)稱跌路下的控制策略進(jìn)行研究,明確不對(duì)稱跌落下的控制目標(biāo),并分別基于PR控制和直接功率控制作詳細(xì)的控制策略分析。最后,分別搭建Matlab/Simulink仿真電路,并在實(shí)驗(yàn)平臺(tái)進(jìn)行驗(yàn)證,分析SVG在對(duì)稱跌落及不對(duì)稱跌落時(shí)控制策略的控制效果。實(shí)驗(yàn)結(jié)果實(shí)現(xiàn)了上述控制策略及其控制目標(biāo),證明了控制策略的正確性與有效性。
[Abstract]:With the rapid development of new energy industry and large-scale grid-connected, its own randomness and intermittency also bring problems such as voltage flicker and fluctuation. One of the better solutions is to use reactive power compensation technology. Taking wind turbine as an example, its own reactive power compensation ability is limited, especially in the process of low voltage traversing operation, it is necessary to install additional reactive power compensation device to meet the demand of power grid for reactive power compensation. Therefore, it is of great practical significance to study the control strategy of low voltage traversing operation of reactive power compensator. At present, SVC (static Var compensator) and SVG (static Var Generator) are the most widely used reactive power compensators in new energy power stations. In this paper, the low voltage traversing operation control strategy of SVG is studied, which can be divided into two cases: symmetrical drop and asymmetric drop. In this paper, the basic compensation characteristics and control strategies of SVC and SVG are introduced, which provide theoretical support for the research of low-voltage traversing control system of reactive power compensator. Secondly, the control strategy of SVG under the symmetrical drop of power grid voltage is studied, the control goal of the symmetrical drop is defined, and the effect of SVG reactive power compensation on the voltage support of the grid is analyzed. Thirdly, the control strategy of SVG under asymmetric voltage drop is studied, and the control target under asymmetric drop is defined, and the control strategy is analyzed in detail based on PR control and direct power control respectively. Finally, Matlab / Simulink simulation circuits are built and verified on the experimental platform, and the control effect of SVG control strategy in symmetric drop and asymmetric drop is analyzed. The experimental results show that the control strategy is correct and effective.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM761.12

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 陳奎;周東;孫建坡;;基于序分量法的D-STATCOM直接功率控制策略研究[J];電力系統(tǒng)保護(hù)與控制;2016年09期

2 陳曉菊;王建華;張杭;張愛(ài)民;;基于準(zhǔn)PR控制的STATCOM直流電容電壓平衡策略[J];電力電子技術(shù);2016年03期

3 沈永波;年珩;;不平衡及諧波電網(wǎng)下基于靜止坐標(biāo)系的并網(wǎng)逆變器直接功率控制[J];電工技術(shù)學(xué)報(bào);2016年04期

4 陳奎;周東;謝永強(qiáng);;非理想條件D-STATCOM預(yù)測(cè)直接功率控制研究[J];電力電子技術(shù);2015年12期

5 付文秀;范春菊;;SVG在雙饋風(fēng)力發(fā)電系統(tǒng)電壓無(wú)功控制中的應(yīng)用[J];電力系統(tǒng)保護(hù)與控制;2015年03期

6 李圣清;徐文祥;栗偉周;曾歡悅;;三相電壓不平衡下級(jí)聯(lián)STATCOM的控制方法[J];電力系統(tǒng)自動(dòng)化;2014年18期

7 鄭海濤;鄭昕;吳興全;姚天亮;;大型并網(wǎng)風(fēng)電場(chǎng)和光伏電站內(nèi)動(dòng)態(tài)無(wú)功補(bǔ)償?shù)膽?yīng)用技術(shù)分析[J];電力系統(tǒng)保護(hù)與控制;2014年16期

8 崔楊;王蘇;王澤洋;周健;;應(yīng)用STATCOM提高DFIG的低電壓穿越域[J];電力系統(tǒng)及其自動(dòng)化學(xué)報(bào);2014年07期

9 年珩;沈永波;宋亦鵬;;不平衡及諧波電網(wǎng)電壓下并網(wǎng)逆變器的直接功率控制策略[J];電網(wǎng)技術(shù);2014年06期

10 江玲;劉邦銀;段善旭;;電網(wǎng)對(duì)稱短路故障時(shí)分布式電源功率注入對(duì)并網(wǎng)點(diǎn)電壓的支撐作用[J];電網(wǎng)技術(shù);2014年03期

，

本文編號(hào)：2063592