暫態(tài)穩(wěn)定是近年來(lái)引起廣泛關(guān)注的一個(gè)問(wèn)題。從技術(shù)上講,穩(wěn)定分析一般采用確定性方法,來(lái)處理電力系統(tǒng)簡(jiǎn)單的確定性穩(wěn)定分析問(wèn)題,但電力系統(tǒng)穩(wěn)定中實(shí)際存在諸多隨機(jī)擾動(dòng),如故障類型、故障位置和故障清除時(shí)間本質(zhì)上都具有一定的隨機(jī)性。近年來(lái),隨著風(fēng)力發(fā)電技術(shù)的快速發(fā)展,風(fēng)力發(fā)電機(jī)大規(guī)模并網(wǎng)對(duì)電力系統(tǒng)整體穩(wěn)定性產(chǎn)生影響。一般來(lái)說(shuō),當(dāng)風(fēng)力發(fā)電機(jī)突然受到擾動(dòng),風(fēng)機(jī)的動(dòng)態(tài)特性會(huì)對(duì)電力系統(tǒng)的穩(wěn)定性產(chǎn)生影響。根據(jù)擾動(dòng)類型,風(fēng)機(jī)對(duì)電力系統(tǒng)穩(wěn)定性影響不同。一些大擾動(dòng)如系統(tǒng)故障、發(fā)電損耗和重載損失等情況會(huì)引起電力系統(tǒng)暫態(tài)穩(wěn)定問(wèn)題。傳統(tǒng)發(fā)電機(jī)暫態(tài)穩(wěn)定性的影響和評(píng)價(jià)方面研究表明:風(fēng)力發(fā)電的出現(xiàn)為電力系統(tǒng)引入了新的發(fā)電技術(shù),并成為電力系統(tǒng)的重要組成部分。有效評(píng)估風(fēng)力發(fā)電對(duì)整個(gè)系統(tǒng)的穩(wěn)定性產(chǎn)生的影響是必要的,將有助系統(tǒng)安全和穩(wěn)定運(yùn)行。本文將采用IEEE-14電力系統(tǒng)進(jìn)行仿真研究。首先,利用潮流求解器和NR法計(jì)算PFA,進(jìn)而假定在第2號(hào)母線上發(fā)生三相故障。在這種偶然情況下,在t=0.5秒的時(shí)時(shí)刻引入0.2秒的持續(xù)故障。然后再進(jìn)行潮流分析,以了解故障對(duì)電力系統(tǒng)的影響。在成功實(shí)施三相故障后,在1號(hào)母線上加入一個(gè)風(fēng)電場(chǎng),時(shí)域分析中可以... 

【文章來(lái)源】：華北電力大學(xué)(北京)北京市 211工程院校 教育部直屬院校

【文章頁(yè)數(shù)】：68 頁(yè)

【學(xué)位級(jí)別】：碩士

【文章目錄】：
Abstract
摘要
縮略詞
1. Introduction
    1.1 Importance of Study on Power System TS and Wind Farms Impact
    1.2 Research Motivation
    1.3 Literature Review
    1.4 Research Objectives
    1.5 Methodology for Research
    1.6 Thesis Outline
2. Background Knowledge
    2.1 What is Power System Stability
    2.2 Power System Stability Classification
    2.3 Classification Need
    2.4 Stability Categories
    2.5 Rotor Angle Stability
        2.5.1 Small Disturbance Angle Stability
        2.5.2 Transient Stability
3. Theoratical Modeling of DFIG & PS Components
    3.1 Impacts of DFIG WT on PS Transient Stability
        3.1.1 Critical Clearing Time Calculation
        3.1.2 Swing Equation
        3.1.3 Steps to Solve
        3.1.4 Swing Curve
    3.2 DFIG Wind Turbine Model
        3.2.1 Generator Model
        3.2.2 Model of WT
        3.2.3 Convertor Protection Device
        3.2.4 Model of Drive Train
        3.2.5 Model Control System
4. IEEE Data & Software Modeling
    4.1 IEEE-14 Bus Data
    4.2 PSAT for Power System Analysis
5. Results & Discussion
    5.1 Result of PFA of IEEE-14 Bus Data
    5.2 Result of PFA of IEEE-14 Bus Data when fault is applied
    5.3 Effect of Increasing WF Energy
        5.3.1 Without WTF
        5.3.2 With One WTF
        5.3.3 With two WTF
    5.4 Installing of static Capacitors
        5.4.1 Result of Installing 3 Capacitors
        5.4.2 Result of Installing 4 Capacitors Data
    5.5 Behavior of the System by changing location of WT
        5.5.1 WT connected at bus-4
        5.5.2 WT connected at bus-1
    5.6 Change in TS by decreasing the WT Speed
        5.6.1 At 20 m/s
        5.6.2 At 15 m/s
        5.6.3 At 10 m/s
6. Conclusions and Future Works
    6.1 Conclusions
    6.2 Future Recommendations
Reference
Acknowledgement


【參考文獻(xiàn)】：
期刊論文
[1]風(fēng)電場(chǎng)接入電力系統(tǒng)容量的研究[J]. 李強(qiáng),張洋,宋曉凱.  電力系統(tǒng)保護(hù)與控制. 2008(16)
[2]基于電力系統(tǒng)暫態(tài)穩(wěn)定分析的風(fēng)電場(chǎng)穿透功率極限計(jì)算[J]. 申洪,梁軍,戴慧珠.  電網(wǎng)技術(shù). 2002(08)



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