Load Frequency Robust Control Considering Intermittent Characteristics of Demand-Side Resources

Guoxin Ming, Jian Geng, Jiantao Liu, Yiyuan Chen, Kun Yuan and Kaifeng Zhang
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Guoxin Ming: Key Laboratory of Measurement and Control of Complex Systems of Engineering, Ministry of Education, Southeast University, Nanjing 201830, China
Jian Geng: China Electric Power Research Institute (Nanjing), Nanjing 210003, China
Jiantao Liu: China Electric Power Research Institute (Nanjing), Nanjing 210003, China
Yiyuan Chen: State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310007, China
Kun Yuan: Key Laboratory of Measurement and Control of Complex Systems of Engineering, Ministry of Education, Southeast University, Nanjing 201830, China
Kaifeng Zhang: Key Laboratory of Measurement and Control of Complex Systems of Engineering, Ministry of Education, Southeast University, Nanjing 201830, China

Energies, 2022, vol. 15, issue 12, 1-20

Abstract: Renewable energy has the characteristics of low carbon and environmental protection compared to traditional water and thermal power, but it also has the intermittency and uncertainty that traditional water and thermal power does not have. These characteristics make the inertia of the power system increase, which greatly affects the frequency stability of the grid. To solve such problems, the participation of demand-side resources (DSRs) in the dispatch of power systems has become a viable solution.However, unlike generation-side resources, DSRs have their own unique characteristics. In this paper, by taking into account a load frequency control system (LFC) with intermittent demand-side resources, the robust H ∞ load frequency control problem are discussed in detail.A robust controller to coordinate the load side with the resource side is introduced. A critical stability criterion and robust performance evaluation of the new LFC system was carried out. Finally, simulation results based on the new LFC system are provided to demonstrate that the proposed control strategy can effectively improve the stability and robustness of the grid under large disturbances, thus allowing the grid frequency to return to the reference value.

Keywords: parameter uncertainty; intermittent characteristics; demand response; robust control; LMI (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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