Identification of voltage stability condition of a power system using measurements of bus variables

Hazarika, Dibya Jyoti; Talukdar, Bani Kanta; Gupta, Brajesh Mohan

doi:10.1049/joe.2014.0263

Cited by 2 publications

(4 citation statements)

References 11 publications

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“…Equation (18) describes the trajectory of ln(VPSI S ) for small displacements around an operating point:…”

Section: Transformation and Maximization Of Voltage-power Stability I...mentioning

confidence: 99%

“…Considering the partial derivatives of ( 18) with respect to S, Z TH and E TH , it is possible to obtain (20) from (18):…”

Section: Transformation and Maximization Of Voltage-power Stability I...mentioning

confidence: 99%

“…Step 2.2: VPSI i , VPSI i+1 applying (18) and evaluate error e = dVPSI S dS S from (21) Step 2.3: Increase loading factor x and go to step 2.1.…”

Section: S Evaluation and Te Determination Based On Vpsi S Maximizationmentioning

confidence: 99%

“…The Thevenin impedance match criterion is still used as an extension for multiport systems [11], as applied for flowgates [12] or for the visualization of voltage stability margins as exposed in [13,14]. Similarly, some voltage stability indexes have been proposed [4,[15][16][17][18] based on the same basic Thevenin reduction concept.…”

Section: Introductionmentioning

confidence: 99%

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Determination of the Thevenin equivalent in power grids using real records based on short circuit power

Fonseca

Salazar

Quilumba

et al. 2020

IET Generation Trans & Dist

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In recent years, methods for loadability determination based on real-time measurements have been proposed for long-term voltage stability scenarios. One of these methods corresponds to the reduction of the complete system into a basic Thevenin equivalent at a load bus. This paper proposes a method to determine the Thevenin equivalent at a load bus in power systems based on short circuit power (S SC ) and its application to real records. The proposed Thevenin equivalent evaluation is performed by processing two consecutive sets of voltage magnitude and power measurements, both recorded at the same bus of a power system. This method establishes a Thevenin equivalent based on the determination of system's equivalent voltage (V S ) which is obtained from S SC . This condition properly accounts for variable power factor load conditions and constant power factor alike in contrast with existing methodologies which assume constant power factor loads. The performance of this method is evaluated with real records from the Ecuadorian electric power system and contrasted by simulation.

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“…Equation (18) describes the trajectory of ln(VPSI S ) for small displacements around an operating point:…”

Section: Transformation and Maximization Of Voltage-power Stability I...mentioning

confidence: 99%

“…Considering the partial derivatives of ( 18) with respect to S, Z TH and E TH , it is possible to obtain (20) from (18):…”

Section: Transformation and Maximization Of Voltage-power Stability I...mentioning

confidence: 99%

“…Step 2.2: VPSI i , VPSI i+1 applying (18) and evaluate error e = dVPSI S dS S from (21) Step 2.3: Increase loading factor x and go to step 2.1.…”

Section: S Evaluation and Te Determination Based On Vpsi S Maximizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Determination of the Thevenin equivalent in power grids using real records based on short circuit power

Fonseca

Salazar

Quilumba

et al. 2020

IET Generation Trans & Dist

View full text Add to dashboard Cite

show abstract

Potential Energy-Driven Stability Analysis of Tie Lines in Ring Network

Ray¹,

Roy²,

Chattopadhyay³

2022

Proceedings of International Conference on Industrial Instrumentation and Control

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Identification of voltage stability condition of a power system using measurements of bus variables

Cited by 2 publications

References 11 publications

Determination of the Thevenin equivalent in power grids using real records based on short circuit power

Determination of the Thevenin equivalent in power grids using real records based on short circuit power

Potential Energy-Driven Stability Analysis of Tie Lines in Ring Network

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