適應(yīng)畸變電網(wǎng)的雙饋風(fēng)力發(fā)電系統(tǒng)控制策略研究
發(fā)布時(shí)間：2018-06-19 14:26
本文選題：雙饋風(fēng)力發(fā)電 + 雙饋?zhàn)兞髌?/strong> ； 參考：《浙江大學(xué)》2014年博士論文
【摘要】：風(fēng)力發(fā)電機(jī)組裝機(jī)容量不斷擴(kuò)大,使得風(fēng)力發(fā)電系統(tǒng)的輸出電能質(zhì)量和并網(wǎng)運(yùn)行的安全可靠性受到越來(lái)越多的關(guān)注。我國(guó)的大型風(fēng)電場(chǎng)大多安裝在大電網(wǎng)的末端,所接入環(huán)境為弱電網(wǎng)環(huán)境,常存在電壓不平衡、諧波畸變等非理想狀況。為維持電網(wǎng)可靠性和穩(wěn)定性、風(fēng)力發(fā)電機(jī)組運(yùn)行安全性,我國(guó)風(fēng)電并網(wǎng)標(biāo)準(zhǔn)《風(fēng)電場(chǎng)接入電力系統(tǒng)技術(shù)規(guī)定》和《風(fēng)電場(chǎng)接入電網(wǎng)技術(shù)規(guī)定》均要求在電網(wǎng)不平衡及諧波畸變下,接入電網(wǎng)的風(fēng)電系統(tǒng)能持續(xù)不脫網(wǎng)運(yùn)行,且輸出電能質(zhì)量符合相關(guān)標(biāo)準(zhǔn)�？紤]我國(guó)實(shí)際情況,本文對(duì)應(yīng)用最為廣泛的雙饋異步感應(yīng)(doubly fed induction generator, DFIG)風(fēng)電機(jī)組在不平衡及諧波畸變電網(wǎng)下的增強(qiáng)運(yùn)行控制展開研究。論文的研究重點(diǎn)為：1)諧波畸變電網(wǎng)下DFIG風(fēng)電系統(tǒng)矢量控制性能評(píng)估及改進(jìn)矢量控制方案；2)不平衡及諧波畸變電網(wǎng)下DFIG風(fēng)電系統(tǒng)積分滑�？刂菩阅茉u(píng)估及諧振滑�？刂品桨浮Ｖ饕芯�?jī)?nèi)容和貢獻(xiàn)有： 1)建立了諧波畸變電網(wǎng)下DFIG風(fēng)電系統(tǒng)的數(shù)學(xué)模型,描述了該電網(wǎng)條件下DFIG風(fēng)電系統(tǒng)的電流、功率、轉(zhuǎn)矩等。分析了該電網(wǎng)下,傳統(tǒng)矢量控制中濾波器參數(shù)及控制器參數(shù)對(duì)機(jī)側(cè)變流器(rotor side converter, RSC)和網(wǎng)側(cè)變流器(gridside converter, GSC)諧波抑制能力的影響,證明了DFIG風(fēng)電系統(tǒng)傳統(tǒng)矢量控制在諧波畸變電網(wǎng)下的局限性,并通過(guò)仿真和實(shí)驗(yàn)進(jìn)行了驗(yàn)證。 2)提出了諧波畸變電網(wǎng)條件下包括GSC和RSC的DFIG風(fēng)電系統(tǒng)的改進(jìn)矢量控制策略。針對(duì)GSC,提出了基于比例-積分-諧振(proportional integral resonant,PIR)電流控制器的改進(jìn)矢量控制方案,實(shí)現(xiàn)輸出電流正弦或輸出有功功率和無(wú)功功率平穩(wěn)無(wú)脈動(dòng)兩個(gè)輔助控制目標(biāo)。針對(duì)RSC,提出基于定子電流諧振閉環(huán)的改進(jìn)矢量控制策略,實(shí)現(xiàn)轉(zhuǎn)子電流正弦、定子電流正弦、消除定子有功功率和無(wú)功功率脈動(dòng)、消除電機(jī)電磁轉(zhuǎn)矩和定子無(wú)功功率脈動(dòng)等4個(gè)輔助控制目標(biāo)。進(jìn)而提出基于改進(jìn)矢量控制的DFIG風(fēng)電系統(tǒng)協(xié)同控制方案,實(shí)現(xiàn)DFIG電磁轉(zhuǎn)矩平穩(wěn)、系統(tǒng)輸出電流正弦或者系統(tǒng)輸出功率平穩(wěn)2個(gè)輔助控制目標(biāo)。針對(duì)以上所提控制策略,進(jìn)行了仿真和實(shí)驗(yàn)驗(yàn)證。 3)為了增強(qiáng)模型參數(shù)變化下DFIG風(fēng)電系統(tǒng)的魯棒性,分別設(shè)計(jì)GSC和RSC的積分滑�？刂品桨�,并給出控制參數(shù)選取原則。然后對(duì)不平衡及諧波電網(wǎng)下積分滑模控制性能進(jìn)行評(píng)估,證明了積分滑�？刂圃诓黄胶饧爸C波畸變電網(wǎng)下無(wú)法實(shí)現(xiàn)無(wú)靜差控制。最后,通過(guò)仿真和實(shí)驗(yàn)進(jìn)行了驗(yàn)證。 4)為消除積分滑�？刂圃诓黄胶饧爸C波電網(wǎng)下的跟蹤誤差,在滑動(dòng)面方程中加入相應(yīng)的諧振項(xiàng),提出了GSC及DFIG諧振滑�？刂撇呗浴�(duì)GSC諧振滑�？刂品桨柑岢隽溯敵鲭娏髡�、輸出有功功率和無(wú)功功率平穩(wěn)無(wú)脈動(dòng)兩個(gè)輔助控制目標(biāo)及其參考計(jì)算；對(duì)DFIG諧振滑�？刂品桨柑岢隽硕ㄗ与娏髡�、定子有功功率和無(wú)功功率平穩(wěn)無(wú)脈動(dòng)、DFIG電磁轉(zhuǎn)矩和定子無(wú)功功率平穩(wěn)無(wú)脈動(dòng)等三個(gè)輔助控制目標(biāo)及其參考計(jì)算,并對(duì)所提諧振滑模控制策略進(jìn)行了實(shí)驗(yàn)驗(yàn)證。
[Abstract]:The capacity of the wind generator assembly machine is expanding, which makes the output power quality of the wind power generation system and the safety and reliability of the grid connected operation more and more attention. Most of the large wind farms in our country are installed at the end of the large power grid, and the access environment is weak electric network environment, which often exists in the non ideal state of voltage imbalance, harmonic distortion and so on. In order to maintain the reliability and stability of the power grid and the safety of the wind turbine, the standard of the wind power grid connected to the power system of China, the technical regulations of the wind farm access to the power system and the provisions of the wind electric field access to the power grid require that the wind power system connected to the power grid can not be removed continuously and the output power quality is consistent with the power grid unbalance and harmonic distortion. Relevant standards. Considering the actual situation of our country, this paper studies the enhanced operation control of the doubly fed induction generator, DFIG (DFIG) wind turbine under unbalanced and harmonic distortion power grid. The focus of this paper is as follows: 1) the vector control performance evaluation of DFIG wind power system under the harmonic distortion power grid and the evaluation of the vector control performance. Improved vector control scheme; 2) integrated sliding mode control performance evaluation and resonant sliding mode control scheme for DFIG wind power system under unbalanced and harmonic distortion. The main research contents and contributions are as follows:
1) the mathematical model of the DFIG wind power system under the harmonic distortion power grid is established, and the current, power and torque of the DFIG wind power system under the power grid are described. The filter parameters and controller parameters in the traditional vector control are analyzed for the rotor side converter (RSC) and the network side converter (gridside converter, GSC). The influence of harmonic suppression capability proves the limitation of traditional vector control of DFIG wind power system under harmonic distortion power grid, and is verified by simulation and experiment.
2) an improved vector control strategy for DFIG wind power system with GSC and RSC is proposed under the harmonic distortion power grid. An improved vector control scheme based on proportional integral resonance (proportional integral resonant, PIR) current controller is proposed for GSC, and the output current sinusoidal or output active power and reactive power are smooth and non pulsating. Two auxiliary control targets. Based on the RSC, an improved vector control strategy based on the stator current resonance closed loop is proposed to realize the sinusoidal current of the rotor, the sinusoidal current of the stator, the elimination of the stator active power and the reactive power pulsation, the elimination of the motor electromagnetic torque and the stator reactive power pulsation, and the improvement of the vector control based on the improved vector control. The coordinated control scheme of the DFIG wind power system makes the DFIG electromagnetic torque smooth, the system output current sinusoidal or the system output power smooth 2 auxiliary control targets.
3) in order to enhance the robustness of DFIG wind power system under the change of model parameters, the integral sliding mode control scheme of GSC and RSC is designed respectively, and the principle of selecting control parameters is given. Then the performance of integral sliding mode control under unbalance and harmonic grid is evaluated. It is proved that the integral sliding mode control can not be realized under unbalance and harmonic distortion power grid. Finally, simulation and experiment are carried out to verify the static error control.
4) in order to eliminate the tracking error of the integral sliding mode control under the unbalanced and harmonic grid, the GSC and DFIG resonant sliding mode control strategy is put forward in the sliding surface equation. The output current sine, the output active power and the reactive power and the steady and unpulsating two auxiliary control targets are proposed for the GSC resonant sliding mode control scheme. The three auxiliary control targets, such as the stator current sinusoidal, the stator active power and the reactive power steady and non pulsating, the DFIG electromagnetic torque and the stator reactive power steady and non pulsating, are proposed for the DFIG resonant sliding mode control scheme, and the experimental verification of the proposed resonant sliding mode control strategy is also carried out.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM614
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 趙仁德,賀益康,劉其輝;提高PWM整流器抗負(fù)載擾動(dòng)性能研究[J];電工技術(shù)學(xué)報(bào);2004年08期
2 張憲平;林資旭;李亞西;許洪華;;LCL濾波的PWM整流器新型控制策略[J];電工技術(shù)學(xué)報(bào);2007年02期
3 孫蔚;伍小杰;戴鵬;周娟;;基于LCL濾波器的電壓源型PWM整流器控制策略綜述[J];電工技術(shù)學(xué)報(bào);2008年01期
4 肖磊;黃守道;黃科元;葉盛;;不對(duì)稱電網(wǎng)故障下直驅(qū)永磁風(fēng)力發(fā)電系統(tǒng)直流母線電壓穩(wěn)定控制[J];電工技術(shù)學(xué)報(bào);2010年07期
5 馬洪飛,徐殿國(guó),苗立杰;幾種變速恒頻風(fēng)力發(fā)電系統(tǒng)控制方案的對(duì)比分析[J];電工技術(shù)雜志;2000年10期
6 趙文祥,劉國(guó)海,吉敬華,白雪;基于DSP的全數(shù)字矢量控制SVPWM變頻調(diào)速系統(tǒng)[J];電機(jī)與控制學(xué)報(bào);2004年02期
7 姚駿;廖勇;李輝;;電網(wǎng)不平衡時(shí)采用串聯(lián)網(wǎng)側(cè)變換器的DFIG風(fēng)電系統(tǒng)協(xié)調(diào)控制[J];電機(jī)與控制學(xué)報(bào);2010年12期
8 裴云慶,姜桂賓,王兆安;LC濾波的三相橋式整流電路網(wǎng)側(cè)諧波分析[J];電力電子技術(shù);2003年03期
9 耿華;楊耕;馬小亮;;并網(wǎng)型風(fēng)力發(fā)電機(jī)組的控制技術(shù)綜述[J];電力電子技術(shù);2006年06期
10 李軍軍;吳政球;譚勛瓊;陳波;;風(fēng)力發(fā)電及其技術(shù)發(fā)展綜述[J];電力建設(shè);2011年08期
相關(guān)博士學(xué)位論文 前2條
1 郭曉明;電網(wǎng)異常條件下雙饋異步風(fēng)力發(fā)電機(jī)的直接功率控制[D];浙江大學(xué);2008年
2 陳思哲;雙饋感應(yīng)風(fēng)力發(fā)電機(jī)組的控制研究[D];華南理工大學(xué);2010年
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