A new reconfiguration scheme for voltage stability enhancement of radial distribution systems

Arun, M.; Aravindhababu, P.

doi:10.1016/j.enconman.2009.04.022

Cited by 46 publications

(25 citation statements)

References 12 publications

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“…The th mode of the Q-V response is defined by the th eigenvalue , and the corresponding right and left eigenvectors and . Since , (7) may be written as (9) By defining as the vector of modal voltage variation and as the vector of modal reactive power variation, one can write uncoupled first-order equations as (10) Thus, for the th mode, we have (11) If…”

Section: Consideringmentioning

confidence: 99%

“…An equivalent two-bus system of a distribution network is used for the analysis of voltage stability [7], [8]. The reconfiguration of radial distribution networks for voltage-stability enhancement is introduced with no DG penetration [9]. Bus indices for considering the effect of aggregated DGs into the voltage security of a transmission grid are developed with neglecting the behavior of radial distribution networks [10].…”

Section: Introductionmentioning

confidence: 99%

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Voltage Stability-Based DG Placement in Distribution Networks

Ettehadi

Ghasemi

Vaez‐Zadeh

2013

IEEE Trans. Power Delivery

177

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Due to high penetration of distributed generation (DG) in distribution networks, transmission networks are no longer responsible solely for security issues in low-voltage distribution networks. DG units may also participate in security as well as power generation depending on their locations. In this paper, a DG placement problem is solved based on voltage stability analysis as a security measure. Modal analysis and continuous power flow are used in a hierarchal placement algorithm. Also, a modified equivalent reactive compensation method is proposed to provide a priority list of DG locations for compensating reactive power during occasions of reactive power shortage. Simulations are carried out on the well-known 33-bus radial distribution network. The results show the effectiveness of the placement algorithm and the ranking method.

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Section: Consideringmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Voltage Stability-Based DG Placement in Distribution Networks

Ettehadi

Ghasemi

Vaez‐Zadeh

2013

IEEE Trans. Power Delivery

177

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“…Optimal locations and sizing of capacitors for voltage stability enhancement in distribution systems using VSI method is considered in [9] and [10]. The feeder reconfiguration scheme for radial distribution system is considered in [11] using VSI method. Optimal placement of Distributed Generations (DGs), capacitor placement and sizing in the distribution system is studied in [12] and [13], using VSI method.…”

Section: Introductionmentioning

confidence: 99%

Voltage stability index method for optimal placement of capacitor banks in a radial network using real-time digital simulator

Krishnamurthy

Mohlwini²

2016

2016 International Conference on the Domestic Use of Energy (DUE)

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Power system stability is classified into frequency, rotor angle and voltage stability. This paper focuses on voltage stability, which refers to the ability of a power system to regain the voltage losses after being subjected to disturbances. The paper developed a Voltage Stability Index (VSI) method for placement of Capacitor Banks (CBs) in a radial network. The power system network is modelled and simulated in the Real Time Digital Simulator (RTDS) and DigSilent environment respectively. The effect of CBs is to reduce the series impedance, thereby reducing the voltage drop and line losses and to improve the power factor and power system stability limits. The shunt compensation technique is studied on the twelve bus radial distribution network and is implemented in Digsilent and RTDS environment respectively. The simulations are carried-out for full-load, overload and reactive power compensation conditions. The result provides that a capacitor bank on the radial network improves the voltage stability limits, maximizes line power flows, reduces network losses, and improves power factor.

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“…Authors have utilized this tool for minimization of power losses [5][6][7][8][9][10][11][12]. Some of the authors have also used network reconfiguration as a tool for load balancing [13][14][15][16][17], power supply restoration [18][19][20], optimum power flow [21], voltage stability improvement [22][23][24], and operation cost reduction [25].…”

Section: Introductionmentioning

confidence: 99%

Graph theory-based radial load flow analysis to solve the dynamic network reconfiguration problem

Aman

Jasmon

Bakar

et al. 2015

Int. Trans. Electr. Energ. Syst.

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Summary Radial load flow (RLF) methods are frequently used in solving distribution system problems. The conventional Jacobian‐based load flow methods (e.g., Newton–Raphson) may fail to converge in solving distribution system due to high resistance to reactance ratio of distribution lines. RLF methods are based on sweep‐based mechanism and require that the line data must be arranged in accordance with network topology. This problem needs special attention particularly in case of solving dynamic power system problems, where topology of the network changes with tie switches position (network reconfiguration problem). This paper has presented an intelligent graph theory‐based RLF analysis to solve “dynamic” problems. The proposed algorithm will help in arranging line data for any combination of tie switch positions, to check the radiality of the system and to ensure that all nodes are connected with the source node. The effectiveness of the proposed method is also validated by solving 16‐bus and 33‐bus network reconfiguration problem using graph theory‐based RLF method. Copyright © 2015 John Wiley & Sons, Ltd.

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A new reconfiguration scheme for voltage stability enhancement of radial distribution systems

Cited by 46 publications

References 12 publications

Voltage Stability-Based DG Placement in Distribution Networks

Voltage Stability-Based DG Placement in Distribution Networks

Voltage stability index method for optimal placement of capacitor banks in a radial network using real-time digital simulator

Graph theory-based radial load flow analysis to solve the dynamic network reconfiguration problem

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