Circuit theory approach for voltage stability assessment of reconfigured power network

Chitra, S.; Devarajan, Narayanasamy

doi:10.1049/iet-cds.2013.0325

Cited by 10 publications

(17 citation statements)

References 19 publications

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“…However, in real systems, P and Q may flow in opposite directions. In such conditions, the above‐mentioned indicators may not properly evaluate the stability status, which has not considered in research works . To clarify this problem, in the network shown in Figure , the L index is calculated in the following operating points: Case P Load = 600 MW, Q Load = 200 MVAr. In this case, since P and Q are flowing from bus 1 to the other one, bus 1 is considered as the SB.…”

Section: Assessment Of Line Indices Against Different Directions Of Pmentioning

confidence: 99%

“…In this regard, these indicators may seem to be a proper tool for voltage stability assessment. Nevertheless, in the sequel, it will be shown that these indices have a major drawback, which is not considered in the literature . To explain this drawback, consider the simple network shown in Figure A, which includes three transmission lines connected in series.…”

Section: Improved Lsz Indicatorsmentioning

confidence: 99%

“…In such conditions, the abovementioned indicators may not properly evaluate the stability status, which has not considered in research works. 35,[48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65] To clarify this problem, in the network shown in Figure 2, the L index is calculated in the following operating points: In this case, since P and Q are flowing from bus 1 to the other one, bus 1 is considered as the SB. Also, the value of L index is 0.51, which is shown in Table 4.…”

Section: Assessment Of Line Indices Against Different Directions Ofmentioning

confidence: 99%

“…Nevertheless, in the sequel, it will be shown that these indices have a major drawback, which is not considered in the literature. 35,[48][49][50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][68][69][70][71][72][73][74][75][76][77][78][79][80][81][82][83][84] To explain this drawback, consider the simple network shown in Figure 13A, which includes three transmission lines connected in series. In this network, the maximum transferable power is 67 as follows: When P max passes through the transmission corridor, it is expected that the line indices calculated for line 2 (or two other ones) reach to their critical threshold to show the proximity of the operating point to stability boundary.…”

Section: Figure 12mentioning

confidence: 99%

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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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Section: Assessment Of Line Indices Against Different Directions Of Pmentioning

confidence: 99%

Section: Improved Lsz Indicatorsmentioning

confidence: 99%

Section: Assessment Of Line Indices Against Different Directions Ofmentioning

confidence: 99%

Section: Figure 12mentioning

confidence: 99%

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A comprehensive assessment to propose an improved line stability index

Yari

Khoshkhoo

2019

Int Trans Electr Energ Syst

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“…In recent years a lot of work has been done in the area of voltage stability. Voltage stability analysis was done by the researchers using nodal analysis [16], modified differential evolution [17], coupled single port circuit [18], circuit theory [19], catastrophe theory [20], chaotic particle swarm optimization algorithm [21], vector regression model [22] etc. Along with the other methods phasor measurement unit based schemes are also been used in power system to monitor voltage stability [23], [24].…”

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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Review on optimization methodologies in transmission network reconfiguration of power systems for grid resilience

Aziz

Liu

Waseem

et al. 2020

Int Trans Electr Energ Syst

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Background When a power system blackout occurs, it affects the economy of the country and every aspect of human life. Cascading failures can easily occur and cause a major blackout in the power grid due to the breakdown or failure of important nodes or links. Recently, transmission network reconfiguration (TNR) becomes a hot topic and has made many concerns after major blackouts of power systems. Aims TNR is the second‐stage action plan to restore power systems and plays a major role in the process of power system restoration. On the other hand, grid resilience involves a quick dynamic reconfiguration of power systems to minimize the propagation of attack influences on the grid. The motivations to include the works in this survey are based on the quality of the research performed in the transmission network reconfiguration problem for grid resilience. In this article, the state‐of‐the‐art review of recent progress in the network reconfiguration problem of the transmission system for grid resilience is discussed with practical challenges, technical issues, and power industry practices. Materials & Methods In this paper, complex network theory‐based indices with advantages, disadvantages, and their applications have been discussed to assess the important nodes and lines for network reconfiguration problem during sudden disturbances in power systems. Furthermore, optimization models have been presented with objective functions as well as their constraints. Taken together, optimization methodologies have been discussed to solve network reconfiguration problem with merits and demerits. Results This survey paper presents current trends in research and future research directions concerning transmission network reconfiguration for academic researchers and practicing engineers. Furthermore, the most current studies in improving transmission network reconfiguration problem are reviewed by highlighting their advantages and limitations. Discussion Based on a thorough comparison of literature some future perspectives are also discussed for transmission network reconfiguration problem for grid resilience. Conclusion This review paper provides a comprehensive review of current practices applied to transmission network reconfiguration. The core focus of this paper will remain on complex network theory‐based indices, optimization models, optimization methodologies, challenges, and technical issues, and discusses future direction for transmission network reconfiguration problem for grid resilience. Furthermore, the most current studies in improving transmission network reconfiguration problem are reviewed by highlighting their advantages and limitations.

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Circuit theory approach for voltage stability assessment of reconfigured power network

Cited by 10 publications

References 19 publications

A comprehensive assessment to propose an improved line stability index

A comprehensive assessment to propose an improved line stability index

Gauss-Seidel Method based Voltage Security Analysis of Distribution System

Review on optimization methodologies in transmission network reconfiguration of power systems for grid resilience

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