<i>V–Q</i>
            sensitivity‐based index for assessment of dynamic voltage stability of power systems

Konar, Srayashi; Chatterjee, Dheeman; Patra, S.

doi:10.1049/iet-gtd.2014.0710

Cited by 31 publications

(26 citation statements)

References 29 publications

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“…By utilizing the local measurements only at a load tap changer bus (LTC bus), the local identification of voltage emergency situations (LIVES) algorithm is proposed to initiate the emergency control actions through load tap changers installed at voltage‐controlled buses. The evolution of voltages at these nodes under tap changers have adequate information to detect the imminent voltage collapse . The main principle of this methodology is monitoring of secondary voltage of load tap changing transformer during post‐disturbance period.…”

Section: Online Indices/methodologiesmentioning

confidence: 99%

Voltage instability detection using synchrophasor measurements: A review

Chappa¹,

Thakur

2020

Int Trans Electr Energ Syst

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Summary This article presents the concept of voltage instability and a critical review of the literature available for detecting voltage instability in the power system. Initially, the problem of voltage instability, the signification of P‐V, Q‐V curves, the effect of load models, on‐load tap changer (OLTC), and over‐excitation limits of generators on voltage instability are lucidly explained. A very brief description of conventional methodologies for voltage instability detection is also presented. This literature review mainly focuses on methodologies based on synchrophasor measurements including both local and global measurements. These methodologies' feasibility for real‐time application has been investigated. The indices that are compared for instability detection may serve as an introduction to measurement‐based voltage instability detection methodologies. The measurement‐based indices that are analyzed and compared are mainly based on the concept of Thevenin parameters estimation, generator equivalent models, nodal reactive power loss concept, and apparent power difference criteria. Thus, this paper attempted to compile all the work reported so far for voltage instability detection using synchrophasor measurements and for each methodology merits and demerits are lucidly discussed and are tabulated.

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Section: Online Indices/methodologiesmentioning

confidence: 99%

Voltage instability detection using synchrophasor measurements: A review

Chappa¹,

Thakur

2020

Int Trans Electr Energ Syst

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“…It should be noted that in deriving these indicators, active power ( P ) and reactive power ( Q ) are assumed to flow from the sending bus (SB) to the receiving bus (RB). Bus voltage stability indices: These indices are used to detect the distance between existing operating point and the maximum loading (ML) of load busses, which results in identification of weakest bus in the system. It is worth mentioning that the implementation of these indices is more complicated and they have more computational burden than line stability indices. Other indices: In addition to line and bus stability indices, there are some other methods like modal analysis, sensitivity analysis, artificial intelligence tools, on‐load tap‐changer (OLTC)–based methods, P‐Q and P‐V curve‐based methods, minimum singular value (MSV) of the power‐flow Jacobian, MSV of the reduced Jacobian, equivalent node voltage collapse index, and energy functions, which can be used to assess the stability of the whole power system. The main drawback of these indices is that they have high computational burden. Obviously, among above‐mentioned tools, the one that can provide more accurate assessment and has lower computational burden will be more effective for online applications.…”

Section: Introductionmentioning

confidence: 99%

“…It is worth mentioning that the implementation of these indices is more complicated and they have more computational burden than line stability indices. • Other indices: In addition to line and bus stability indices, there are some other methods like modal analysis, 11 sensitivity analysis, 12,13 artificial intelligence tools, 14,15 on-load tap-changer (OLTC)-based methods, [16][17][18] P-Q and P-V curve-based methods, 19 minimum singular value (MSV) of the power-flow Jacobian, 20 MSV of the reduced Jacobian, 21 equivalent node voltage collapse index, 22 and energy functions, 23 which can be used to assess the stability of the whole power system. The main drawback of these indices is that they have high computational burden.…”

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confidence: 99%

A comprehensive assessment to propose an improved line stability index

Yari

Khoshkhoo

2019

Int Trans Electr Energ Syst

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Summary So far, several line stability indices have been introduced and used for evaluating voltage stability status of power systems. The objective of this paper is to propose a comprehensive assessment of these indices and also to propose a modified line stability index to accurately assess the stability status of networks in different situations. To this purpose, the performance of several line indices at different conditions is analyzed. Also, to categorize system states to normal, alert, and emergency, proper thresholds are proposed for these indices. It will be shown that although line indices are able to properly assess the stability of a two‐bus system, they cannot detect the stability status in real networks. Therefore, a modified index has been proposed, which can accurately assess the stability status of power systems. The static and dynamic simulation results performed in the Institute of Electrical and Electronics Engineer (IEEE) 39‐ and 118‐bus test systems verify the performance of the proposed index.

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“…P-V curve and Q-V curve method [7][8][9] are the traditional methods of voltage stability analysis. Many indices such as SVSI [10], L-index [11], L mn and VCPI [12], integrated voltage stability indicators [13] etc.…”

Section: Introductionmentioning

confidence: 99%

Gauss-Seidel Method based Voltage Security Analysis of Distribution System

Deb¹,

Chakraborty²

2018

IJECE

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Complexity of modern power network and Large disturbance results voltage collapse. So, voltage security analysis is important in power system. Indicators are helpful in voltage stability analysis, as they give information about the state of the system. In this paper a new indicator namely Distribution System Stability Indicator (DSSI) has been formulated using the information of Phasor Measurement Unit (PMU).The proposed indicator (DSSI) is tested on standard IEEE 33 bus radial distribution system. The suggested indicator is also applicable to the equivalent two bus system of a multi-bus power system. The proposed indicator is calculated for different contingent conditions at different system load configurations. The result of DSSI is verified with the standard indicator (VSI) which proves applicability of the proposed indicator. The bus voltages of all the buses at base loading and at maximum loading are evaluated for base data and for tripping of most critical line.

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V–Q sensitivity‐based index for assessment of dynamic voltage stability of power systems

Cited by 31 publications

References 29 publications

Voltage instability detection using synchrophasor measurements: A review

Voltage instability detection using synchrophasor measurements: A review

A comprehensive assessment to propose an improved line stability index

Gauss-Seidel Method based Voltage Security Analysis of Distribution System

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