基于态势感知的风电高压直流输电系统频率协调控制策略
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上海电力大学电气工程学院 上海 200000

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TM721

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国家自然科学(51807114).


Frequency Coordinated Control Strategy for Wind Power HVDC Transmission SystemBased on Situation Awareness
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School of Electrical Engineering,Shanghai Electric Power University

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    摘要:

    为提高风电高压直流输电系统的频率恢复速率和稳定性,本文基于态势感知理论,建立了频率协调控制(FCC)数学模型,提出了一种基于态势感知的风电接入输电系统频率控制方法。通过对功频特性态势现状和发展规律的总结,构建了非线性数学模型,预测了有限时域下的频率响应。根据预测结果动态调整了FCC的参数,并基于仿真模型与传统控制方法进行了仿真对比测试。试验结果表明,与传统控制方法相比,在基于态势感知的控制方法下,系统的最大频率偏差降低了约41.6%,频率回调时间降低了约11.6%,能够有效提高系统频率恢复速率,降低系统最大频率偏差概率,增强系统稳定性。

    Abstract:

    With the expansion of the scale of wind power generation, in order to improve the frequency recovery rate and stability of the wind power HVDC transmission system, this paper establishes a frequency coordinated control (FCC) mathematical model based on the situation awareness theory, and proposes a wind power based on situation awareness. Access to the frequency control method of the power transmission system. By summarizing the current status and development laws of power-frequency characteristics, a nonlinear mathematical model is constructed to predict the frequency response in the finite time domain. According to the prediction results, the FCC parameters were dynamically adjusted, and simulation comparison tests were carried out based on the simulation model and traditional control methods. The test results show that, compared with the traditional control method, under the situational awareness-based control method, the maximum frequency deviation of the system is reduced by about 41.6%, and the frequency callback time is reduced by about 11.6%, which can effectively increase the frequency recovery rate of the system and reduce the system. The maximum frequency deviation probability enhances system stability.

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  • 收稿日期:2021-03-03
  • 最后修改日期:2021-05-31
  • 录用日期:2021-06-18
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