Linearized voltage stability incorporation with line-wise optimal power flow

Mohamed, Amr A.; Venkatesh, Bala

doi:10.1016/j.ijepes.2019.01.005

Cited by 17 publications

(12 citation statements)

References 27 publications

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“…e incorporation of line voltage collapse index (VCI) was proposed for line-wise optimal power flow as the set of voltage stability constraint and objective function [28].…”

Section: Introductionmentioning

confidence: 99%

Implementation of Static Line Voltage Stability Indices for Improved Static Voltage Stability Margin

Thasnas

Siritaratiwat

2019

Journal of Electrical and Computer Engineering

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Nowadays, the changes of economic, environment, and regulations are forcing the electric utilities to operate systems at maximum capacity. Therefore, the operation and control of power system to improve the system stability has been receiving a great deal of attention. This paper presents an approach for enhancing the static voltage stability margin and reducing the power losses of the system with voltage security-constrained optimal power flow (VSC-OPF) that is based on static line voltage stability indices. The control approaches incorporate the voltage stability criteria into the conventional OPF. The minimization of the summation of fast voltage stability index (FVSI), line stability index (Lmn), and line voltage stability index (LVSI) is used as the objective functions. The performance and effectiveness of the proposed control approaches are evaluated on the standard IEEE 30-bus, 57-bus, and 118-bus test systems under normal and contingency conditions. The comparison analysis is carried out with different cases including minimization of generation cost. The proposed control approaches indicate the promising results and offer efficient countermeasures against the voltage instability of the system.

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“…e incorporation of line voltage collapse index (VCI) was proposed for line-wise optimal power flow as the set of voltage stability constraint and objective function [28].…”

Section: Introductionmentioning

confidence: 99%

Implementation of Static Line Voltage Stability Indices for Improved Static Voltage Stability Margin

Thasnas

Siritaratiwat

2019

Journal of Electrical and Computer Engineering

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“…Here, the voltage collapse index (VCI) is utilized to assess the risk level of the MCMMG. The detailed formulation of VCI is presented in [33,34]. Figure 5, which is a two-bus representation of a power system, is utilized to introduce the voltage collapse index.…”

Section: Quantifying the Consequence Of Contingenciesmentioning

confidence: 99%

Decentralized risk‐based security‐constrained optimal power flow in interconnected multi‐carrier microgrids

Kalajahi

Seyedi

Tohidi

et al. 2022

IET Generation Trans & Dist

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The security of energy systems has always been one of the most important issues of energy systems operation. The multi-carrier multi-microgrid (MCMMG) is one of the novel structures in the power system. High penetration of renewable resources and their uncertainty, their ability to operate in isolation mode, and the presence of energy hubs in MCMMG systems increase the importance of security assessment in this type of system. This paper presents a decentralized risk-based security-constrained optimal power flow model for an MCMMG system. The stochastic nature of wind energy, photovoltaic generation, and electrical and heating loads are considered in the proposed model. In the model, the risk level of the system is determined by considering both the electrical and natural gas (NG) networks' contingencies. The proposed model is decomposed into three types of subproblems with the augmented Lagrangian relaxation (ALR) method: The subproblem related to the multi-microgrid operator level, the NG network subproblem, and the individual microgrid level subproblem. The decomposed problem is solved using MATLAB software. According to the results, the proposed model can secure the system from high costs that may impose on the system due to the contingency occurrence.

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“…However, an individual case was not considered for the analysis of the negative impact on the grid of the unordered charging. Several researches have been published considering voltage reliability in the power system [19,20]. In general, charging EVs can have two significant impacts on the electrical grid.…”

Section: Introductionmentioning

confidence: 99%

Integration of Large-Scale Electric Vehicles into Utility Grid: An Efficient Approach for Impact Analysis and Power Quality Assessment

et al. 2021

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Electric vehicles (EVs) have received massive consideration in the automotive industries due to their improved performance, efficiency and capability to minimize global warming and carbon emission impacts. The utilization of EVs has several potential benefits, such as increased use of renewable energy, less dependency on fossil-fuel-based power generations and energy-storage capability. Although EVs can significantly mitigate global carbon emissions, it is challenging to maintain power balance during charging on-peak hours. Thus, it mandates a comprehensive impact analysis of high-level electric vehicle penetration in utility grids. This paper investigates the impacts of large-scale EV penetration on low voltage distribution, considering the charging time, charging method and characteristics. Several charging scenarios are considered for EVs’ integration into the utility grid regarding power demand, voltage profile, power quality and system adequacy. A lookup-table-based charging approach for EVs is proposed for impact analysis, while considering a large-scale integration. It is observed that the bus voltage and line current are affected during high-level charging and discharging of the EVs. The residential grid voltage sag increases by about 1.96% to 1.77%, 2.21%, 1.96 to 1.521% and 1.93% in four EV-charging profiles, respectively. The finding of this work can be adopted in designing optimal charging/discharging of EVs to minimize the impacts on bus voltage and line current.

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Linearized voltage stability incorporation with line-wise optimal power flow

Cited by 17 publications

References 27 publications

Implementation of Static Line Voltage Stability Indices for Improved Static Voltage Stability Margin

Implementation of Static Line Voltage Stability Indices for Improved Static Voltage Stability Margin

Decentralized risk‐based security‐constrained optimal power flow in interconnected multi‐carrier microgrids

Integration of Large-Scale Electric Vehicles into Utility Grid: An Efficient Approach for Impact Analysis and Power Quality Assessment

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