Study of the control-equilibrium of control systems

Liu, Qiaoge; Fu, Mengyin; Chang-sheng, Sun

doi:10.1016/s1004-4132(08)60152-8

Cited by 1 publication

(1 citation statement)

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“…Systems Science provides a broader context to the stability concept [2,3]. In this sense, stability represents the ability of a system to provide equilibrium to its outputs after perturbations in its inputs [4][5][6]. Therefore, equilibrium refers to the situation in which there is a reduced oscillation in the system, either in aspects related to its internal dynamics or in the outputs it provides to the external environment [7].…”

Section: Introductionmentioning

confidence: 99%

Stability Metric Based on Sensitivity Analysis Applied to Electrical Repowering System

et al. 2021

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Stability metrics are used to quantify a system’s ability to maintain equilibrium under disturbances. We did not identify the proposition of a stability metric using sensitivity analysis within the literature. This work proposes a system stability metric and its application to an electrical repowering system. The methodology for applying the proposed metric comprises: (i) system parameters sensitivity analysis and spider diagram construction, (ii) determining the array containing the line segments inclination angles of each spider diagram curve, and (iii) stability calculation using the array mean and maximum inclination value of a line segment. After simulating the model built for the electrical repowering system and applying the methodology, we obtain results regarding the sensitivity indices and stability values of system inputs relative to their outputs, considering the original system and with reduced parameters. Using the stability study, it was possible to determine different stability categories for the system parameters, which indicates the need for different analysis levels.

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