风力发电场一体化的影响对电力系统稳定性

发布时间：2021-11-09 13:50

　　暂态稳定是近年来引起广泛关注的一个问题。从技术上讲,稳定分析一般采用确定性方法,来处理电力系统简单的确定性稳定分析问题,但电力系统稳定中实际存在诸多随机扰动,如故障类型、故障位置和故障清除时间本质上都具有一定的随机性。近年来,随着风力发电技术的快速发展,风力发电机大规模并网对电力系统整体稳定性产生影响。一般来说,当风力发电机突然受到扰动,风机的动态特性会对电力系统的稳定性产生影响。根据扰动类型,风机对电力系统稳定性影响不同。一些大扰动如系统故障、发电损耗和重载损失等情况会引起电力系统暂态稳定问题。传统发电机暂态稳定性的影响和评价方面研究表明:风力发电的出现为电力系统引入了新的发电技术,并成为电力系统的重要组成部分。有效评估风力发电对整个系统的稳定性产生的影响是必要的,将有助系统安全和稳定运行。本文将采用IEEE-14电力系统进行仿真研究。首先,利用潮流求解器和NR法计算PFA,进而假定在第2号母线上发生三相故障。在这种偶然情况下,在t=0.5秒的时时刻引入0.2秒的持续故障。然后再进行潮流分析,以了解故障对电力系统的影响。在成功实施三相故障后,在1号母线上加入一个风电场,时域分析中可以... 

【文章来源】：华北电力大学(北京)北京市 211工程院校 教育部直属院校

【文章页数】：68 页

【学位级别】：硕士

【文章目录】：
Abstract
摘要
缩略词
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


【参考文献】：
期刊论文
[1]风电场接入电力系统容量的研究[J]. 李强,张洋,宋晓凯.  电力系统保护与控制. 2008(16)
[2]基于电力系统暂态稳定分析的风电场穿透功率极限计算[J]. 申洪,梁军,戴慧珠.  电网技术. 2002(08)



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