A Tool for the Comprehensive Analysis of Power System Dynamic Stability

Gross, George; Imparato, C.F.; Look, Pui Mee

doi:10.1109/tpas.1982.317342

Cited by 46 publications

(3 citation statements)

References 12 publications

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“…Replacing and in (17) by (13) and (18), (17) can be rewritten in the following form: (19) Step 5) The electrical torque of the th generator can be given by the following equation: (20) Substituting and in (19) by (20), the following equation can be obtained: (21) where…”

Section: B Electrical Complex Torque Coefficient Calculatingmentioning

confidence: 99%

“…Step 6) Substituting in (21) by the mechanical complex torque coefficient of each generator unit given by (1), (21) can be rewritten in the following form: (22) It should be pointed out here that the mechanical complex torque coefficients represent the shaft system dynamics of the generator units. Hence, the shaft system dynamics of the other generator units in the system can be successfully considered in this method.…”

Section: B Electrical Complex Torque Coefficient Calculatingmentioning

confidence: 99%

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Improved Complex Torque Coefficient Method Using CPCM for Multi-Machine System SSR Analysis

Zhu

Wen

Cheng

2014

IEEE Trans. Power Syst.

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Calculation of the complex torque coefficient for multi-machine system subsynchronous resonance (SSR) assessment had been proven a hard task. In this paper the concept of complex frequency domain port-equivalence conductance matrix (CPCM) is introduced to model the individual system component which represents the relationship between the terminal voltage and current in frequency domain, and the model of the overall power system can be established easily. Thus the complex torque coefficients of the generator unit under investigation can be calculated for SSR assessment. The advantages of this proposed method are that it can take the shaft dynamics and the rotor angle interactions among the generator units into consideration for the multi-machine power system SSR analysis, as well as it can be used to analyze the effectiveness of SSR damping devices. The effectiveness of the proposed method has been verified by both the eigenvalue analysis and the time domain simulation.Index Terms-Complex frequency domain port-equivalence conductance matrix (CPCM), complex torque coefficient, damping device, multi-machine system, subsynchronous resonance (SSR). NOMENCLATURELaplace operator. Small deviation of a variable.Subscript denoting the -axis and the -axis component of the variable in the coordinate, respectively.Subscript denoting the -axis and the -axis component of the variable in the synchronously rotating common reference, respectively.Mechanical complex torque coefficient.Electrical complex torque coefficient.Mechanical spring and damping coefficients.Electrical spring and damping coefficients.

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Section: B Electrical Complex Torque Coefficient Calculatingmentioning

confidence: 99%

Section: B Electrical Complex Torque Coefficient Calculatingmentioning

confidence: 99%

Improved Complex Torque Coefficient Method Using CPCM for Multi-Machine System SSR Analysis

Zhu

Wen

Cheng

2014

IEEE Trans. Power Syst.

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“…Recently analysis methods of low-frequency oscillation can be divided into two categories [1], one based on the system mathematical model and the other based on the measure signal. In recent years there have been more and more analysis methods based on measure signals [2].…”

Section: Introductionmentioning

confidence: 99%

Oscillation Mode Information Identification of Power System Based on Daily Small Disturbances

Mei¹,

Wang²,

Huang³

2018

dteees

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A large number of disturbances of power mutations of units or load exist in power system in daily operation, which may inspire the grid interval mode oscillations within a narrow range. Some units' power-angle and power dynamic measurement include part of oscillation information which can be identified by using appropriate identification methods to forewarn and preventively control low frequency oscillation. This paper chose common methods, Prony and ARMA, to identify and analyze the oscillation information, based on the characteristics of slight oscillation of power system due to small disturbance, comparing noise immunity of the two algorithms in varied noise disturbance situations. Then it compares the feasibility of the two algorithms in conspicuous and inconspicuous oscillation cases according to WAMS measured data of actual grid.

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A multimachine Heffron-Phillips model for power systems with frequency- and voltage-dependent loads

Bhatti

Hill

1990

International Journal of Electrical Power & Energy Systems

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A Tool for the Comprehensive Analysis of Power System Dynamic Stability

Cited by 46 publications

References 12 publications

Improved Complex Torque Coefficient Method Using CPCM for Multi-Machine System SSR Analysis

Improved Complex Torque Coefficient Method Using CPCM for Multi-Machine System SSR Analysis

Oscillation Mode Information Identification of Power System Based on Daily Small Disturbances

A multimachine Heffron-Phillips model for power systems with frequency- and voltage-dependent loads

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