Impacts of Integration of Wind Farms on Power System Transient Stability
Impacts of Integration of Wind Farms on Power System Transient Stability
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DOI：
10.3390/app8081289
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发表时间：
2018-08
期刊：
影响因子：
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通讯作者：
S. Xia;Qian Zhang;S. Hussain;B. Hong;Weiwei Zou
中科院分区：
文献类型：
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作者：
S. Xia;Qian Zhang;S. Hussain;B. Hong;Weiwei Zou
为了弥补日益扩大的能源缺口，近年来可再生能源在全球范围内迅速扩张，但也给电力系统运行带来了静态安全和暂态稳定问题等挑战。特别地，由于风力发电在这些可再生能源中占很大的份额并且减小了电力网络的惯性，具有高水平风力发电的电力系统的暂态稳定性降低，并且近来引起了广泛的关注。有效地分析和评估风力发电对电力系统暂态稳定性的影响是提高电力系统运行安全水平的必要条件。本文首先建立了双馈感应发电机双集总质量风力涡轮机模型，分析了风力发电对电力系统暂态稳定性的影响。虽然风力发电对暂态稳定性的影响已经得到了全面的研究，但许多其他关键因素，如风电场的位置和驱动风力涡轮机的风速也进行了详细的研究。此外，还对如何通过加装电容器来提高系统的暂态稳定性进行了论证。利用电力系统分析工具对IEEE 14节点系统进行了时域仿真研究，结果表明：（1）风电场容量的增加会增加系统的不稳定性;（2）风电场的位置和风速会影响系统的暂态稳定性;（3）安装电容器会有效提高系统的暂态稳定性。
To compensate for the ever-growing energy gap, renewable resources have undergone fast expansions worldwide in recent years, but they also result in some challenges for power system operation such as the static security and transient stability issues. In particular, as wind power generation accounts for a large share of these renewable energy and reduces the inertia of a power network, the transient stability of power systems with high-level wind generation is decreased and has attracted wide attention recently. Effectively analyzing and evaluating the impact of wind generation on power transient stability is indispensable to improve power system operation security level. In this paper, a Doubly Fed Induction Generator with a two-lumped mass wind turbine model is presented firstly to analyze impacts of wind power generation on power system transient stability. Although the influence of wind power generation on transient stability has been comprehensively studied, many other key factors such as the locations of wind farms and the wind speed driving the wind turbine are also investigated in detail. Furthermore, how to improve the transient stability by installing capacitors is also demonstrated in the paper. The IEEE 14-bus system is used to conduct these investigations by using the Power System Analysis Tool, and the time domain simulation results show that: (1) By increasing the capacity of wind farms, the system instability increases; (2) The wind farm location and wind speed can affect power system transient stability; (3) Installing capacitors will effectively improve system transient stability.