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Research on Dynamic Hierarchical Control Strategy of AGC in Complex Power Grid with Penetration Effect of Wind Power

  • Research Article-Electrical Engineering
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Abstract

The system inertia and relative reserve capacity will decrease due to the increasing penetration of wind power, which adds difficulty for the traditional automatic generation control (AGC). In addition, the participation of wind power into the AGC system will cause the control strategy more complex. Therefore, a dynamic hierarchical method is proposed for targeted control effect of frequency regulation. Firstly, an AGC system model of multi-area interconnected grid with participation of wind power is analyzed. Then, the effect of the participation of wind power into AGC with different penetrations is analyzed. Due to the effect of wind power on AGC slowing down when the penetration of that becomes high, a two-layer control architecture with centralized model predictive control of upper layer and regional proportional integral derivative controller of lower layer is designed. Because the complex control strategy will result in a large number of system resource being occupied, simplification is necessary when the requirement of frequency regulation is not ample due to the reasons such as the small load fluctuation. Therefore, a dynamic hierarchical control strategy is designed. Two scenarios of step disturbance and random load disturbance are analyzed, which verified the feasibility and effectiveness of the proposed method.

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Funding

The article was funded by National Natural Science Foundation of China (61603127).

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Correspondence to Xilin Zhao.

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Zhao, X., Gong, C., Gong, S. et al. Research on Dynamic Hierarchical Control Strategy of AGC in Complex Power Grid with Penetration Effect of Wind Power. Arab J Sci Eng 48, 6307–6319 (2023). https://doi.org/10.1007/s13369-022-07358-4

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  • DOI: https://doi.org/10.1007/s13369-022-07358-4

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