Improving Power System Stability Using Transfer Function: A Comparative Analysis

Shahgholian, Ghazanfar; Fattollahi, A.

doi:10.48084/etasr.1341

Cited by 19 publications

(9 citation statements)

References 16 publications

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“…When the absolute mismatch of any two consecutive iterates is within the desired accuracy bound ߳, then the desired solution is obtained [12].…”

Section: A Gauss-seidel (Gs) Methodsmentioning

confidence: 99%

“…The PM uses only one additional midpoint of the Jacobian matrix to calculate each iteration when more than one is used in [17]. The main equations of the PM in scalar form are (11) and (12).…”

Section: A Algorithm Of the Pmmentioning

confidence: 99%

“…LF studies serve as a basis in different aspects associated with power systems, for example power flow optimization, continuation and online transmission [5][6][7]. New methods with robust solutions and fast convergence are still searched and these fast methods for the LF problems are needed in the field of power systems, particularly for optimal power factor extraction and improvement, maximum power point tracking in solar photovoltaic systems [8], power electronics with stability and control [7,9], steady-state and transient stability of power systems [10][11][12][13]. One of the old methods for solving the LF problem was the Gauss-Siedel (GS) method [5,[14][15].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A New and Efficient Nonlinear Solver for Load Flow Problems

Khoso¹,

Shaikh²,

Hashmani³

2020

Eng. Technol. Appl. Sci. Res.

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Load Flow (LF) analysis is a fundamental and significant issue in electric power systems. Because of the nonlinearity of the power mismatch equations, the accuracy of the nonlinear solvers is important. In this study, a novel and efficient nonlinear solver is proposed with active applications to LF problems. The formulation of the Proposed Method (PM) and its workflow and mathematical modeling for its application in LF problems have been discussed. The performance of the PM has been validated on the IEEE 14-bus and 30-bus test systems against several existing methods. The simulation results show that the PM exhibits higher order accuracy, faster convergence characteristics, smaller number of iterations, and lesser computation times in comparison with the other benchmark methods.

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“…When the absolute mismatch of any two consecutive iterates is within the desired accuracy bound ߳, then the desired solution is obtained [12].…”

Section: A Gauss-seidel (Gs) Methodsmentioning

confidence: 99%

Section: A Algorithm Of the Pmmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A New and Efficient Nonlinear Solver for Load Flow Problems

Khoso¹,

Shaikh²,

Hashmani³

2020

Eng. Technol. Appl. Sci. Res.

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“…The use of FACTS devices for TS was investigated in [15]. Other approaches like the use of fuzzy logic controllers [16] and harmonic function [17] have also been used to improve PSS under different conditions [18].…”

Section: Imentioning

confidence: 99%

Steady State Stability Analysis and Improvement using Eigenvalues and PSS: A Case Study of a Thermal Power Plant in Jamshoro, Pakistan

Hashmani

Shaikh

2020

Eng. Technol. Appl. Sci. Res.

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The efficient handling and distribution of electrical power consist one of the most complex and appealing research problems. Due to the interconnection of different power plants and intensity of load, which gradually changes due to continuous change in load on generating units, careful treatment of the small disturbances in a power system which may lead to severe disturbance is necessary. Stability is an essential part in electrical power system operation and control. The stability problem is related with the behavior of synchronous machine after the power system is subjected to trouble. This work presents Steady State Stability (SSS) analysis of a Jamshoro Thermal Power Plant (JTPP) by using eigenvalue analysis of the different cases by varying load at three different positions. A mathematical model has been used for the JTPP with real data in order to examine the behavior of the system and to find the eigenvalues. A Simulink model of the JTTP for waveform analysis in MATLAB/Simulink has been used without and with Power System Stabilizer (PSS). Numerical quantification of the eigenvalues under the examined cases categorizes the stability of the system. The waveforms of the system are analyzed, and in cases of instability, the proposed procedure utilizing PSS helps in maintaining the system’s usual working conditions. The eigenvalue analysis and simulation results show the behavior of synchronous machines when loading changes gradually. The existing system becomes stable after more swings, whereas by using PSS in the existing system, stable regimes are attained in less time. The obtained results demonstrate the effectiveness of the proposed solution for SSS examination and securing of the disturbances of the JTPP.

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“…Furthermore, the fixed PI parameters do not guarantee a rapid presynchronization speed due to the presence of various types of shore power boxes (Meng and Lu, 2021; Tang et al, 2020). In this regard, the PI parameters of presynchronization need to be carefully designed, which not only ensures the rapidity of presynchronization but also prevents the frequency exceeding the limit in the adjustment process (Shahgholian et al, 2017b; Shahgholian and Fattollahi, 2017a). However, the current empirical or trial-and-error methods for PI parameter selection cannot meet the above accuracy requirements.…”

Section: Introductionmentioning

confidence: 99%

Presynchronization control for ship microgrid of merchant marine inverters based on VSG algorithm with MFAC

Yao,

Pei,

Chi

et al. 2024

Transactions of the Institute of Measurement and Control

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The paper studies a presynchronization control of grid connection for large merchant marine microgrid inverters. We present a virtual synchronous generator (VSG) algorithm with model-free adaptive control (MFAC) to optimize the stable grid connection of ship microgrid and shore-to-ship power. To solve poor precision of presynchronization control under nonideal ship microgrid condition, an MFAC controller and its presynchronization method are developed for grid connection of ship-distributed generation inverters. The proposed presynchronization control method effectively avoids a high transient overcurrent and achieves a seamless grid connection to different types of shore power. The simulation results verify the effectiveness of the proposed control method.

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Improving Power System Stability Using Transfer Function: A Comparative Analysis

Cited by 19 publications

References 16 publications

A New and Efficient Nonlinear Solver for Load Flow Problems

A New and Efficient Nonlinear Solver for Load Flow Problems

Steady State Stability Analysis and Improvement using Eigenvalues and PSS: A Case Study of a Thermal Power Plant in Jamshoro, Pakistan

Presynchronization control for ship microgrid of merchant marine inverters based on VSG algorithm with MFAC

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