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Analytical Prediction Method of Power System Frequency Deviation under Uncertain Disturbances
  • Lixuan Zhu,
  • Ping Ju,
  • Yiping Yu
Lixuan Zhu
Hohai University

Corresponding Author:[email protected]

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Ping Ju
Hohai University
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Yiping Yu
Hohai University
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Abstract

In modern power systems, the impact of random power sources and loads on power systems is increasing, resulting in threatened system frequency security. However, traditional methods are often not comprehensive in modelling randomness, and there is no analytical method to assess the frequency response of power systems under uncertain power disturbances. In this paper, the power disturbance in a power system is regarded as an interval random quantity. Based on a general model of the system frequency response (SFR-G) and the theory of stochastic processes, an analytical prediction method of the power system frequency deviation under uncertain power disturbance is proposed. Through further deduction, the allowable range of power disturbance under the premise of secure frequency deviation can also be defined, which provides a reference for frequency security and accident prevention in power systems. Numerical simulations demonstrate that the proposed analytical method can delimit the response interval of system frequency deviation well, and the backstepping calculation can also delimit the allowable range of power disturbance to ensure the secure operation of the system.
20 Feb 2023Submitted to IET Generation, Transmission & Distribution
20 Feb 2023Submission Checks Completed
20 Feb 2023Assigned to Editor
21 Feb 2023Reviewer(s) Assigned
01 Apr 2023Review(s) Completed, Editorial Evaluation Pending
06 Apr 2023Editorial Decision: Revise Major
28 Apr 20231st Revision Received
29 Apr 2023Submission Checks Completed
29 Apr 2023Assigned to Editor
01 May 2023Reviewer(s) Assigned
08 May 2023Review(s) Completed, Editorial Evaluation Pending
11 May 2023Editorial Decision: Accept