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Small Signal Stability and Robust Control Method of Cyber Physical Power System in Stochastic Environment
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Zi-xi HAN1, 2, Zong-wu HUANG1, 2, Chen-xuan ZHANG1, 2, Zhao-yi ZHANG1, 2, Feng XIONG1, 2, You-ping FAN1, 2, *
Science Technology and Engineering | 2025, 25(4) : 1512 - 1521
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Science Technology and Engineering | 2025, 25(4): 1512-1521
• Papers·Electrical Technology •
Small Signal Stability and Robust Control Method of Cyber Physical Power System in Stochastic Environment
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Zi-xi HAN1, 2, Zong-wu HUANG1, 2, Chen-xuan ZHANG1, 2, Zhao-yi ZHANG1, 2, Feng XIONG1, 2, You-ping FAN1, 2, *
Affiliations
  • 1 Institute of Next Generation Power Systems and International Standards, Wuhan University, Wuhan 430072, China
  • 2 School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
Published: 2025-02-08 doi: 10.12404/j.issn.1671-1815.2401741
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The stability of power cyber physical system(CPS) is easily affected by stochastic uncertainty from both the information and physical sides. A stability analysis method for power CPS based on stochastic uncertainty model and a robust wide area feedback frequency control method were proposed. Taking into account the essential differences between the discreteness of the information side and the continuity of the physical side, as well as the mutual influence in terms of functionality, a dynamic model of power CPS in stochastic environment was established from both the information and physical sides. According to the definition of mean square exponential stability of stochastic differential equations, small signal stability analysis was conducted for dynamic model of power CPS. The critical variance based on mean square norm calculation was used to describe the impact of stochastic uncertainty on small signal stability of power CPS. Focusing on the norm optimization problem based on linear matrix inequality constraints, a robust wide area feedback controller was designed based on the distributed control method. Finally, simulation analysis was conducted on an IEEE 39 bus system, and the results verified the correctness and effectiveness of the proposed method.

cyber physical system(CPS)  /  stochastic uncertainty  /  small signal stability  /  load frequency control  /  robust distributed control
Zi-xi HAN, Zong-wu HUANG, Chen-xuan ZHANG, Zhao-yi ZHANG, Feng XIONG, You-ping FAN. Small Signal Stability and Robust Control Method of Cyber Physical Power System in Stochastic Environment[J]. Science Technology and Engineering, 2025 , 25 (4) : 1512 -1521 . DOI: 10.12404/j.issn.1671-1815.2401741
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Year 2025 volume 25 Issue 4
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Article Info
doi: 10.12404/j.issn.1671-1815.2401741
  • Receive Date：2024-03-12
  • Online Date：2025-07-29
  • Published：2025-02-08
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History
  • Received：2024-03-12
  • Revised：2024-11-20
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Affiliations
    1 Institute of Next Generation Power Systems and International Standards, Wuhan University, Wuhan 430072, China
    2 School of Electrical Engineering and Automation, Wuhan University, Wuhan 430072, China
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