The new steady state voltage stability analysis methods with computation loads separation technique in DC power systems

Wang, Yuqi; Xu, Qingshan; Zheng, Jiaqi

doi:10.1016/j.ijepes.2019.105482

Cited by 3 publications

(1 citation statement)

References 26 publications

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“…It is a valuable indicator for making judgments since it can quantify the distance from the absolute location of the system's instability to the grid operator. The grid load limit index, which can be used as a gauge of the maximum voltage stability margin, is the sole indicator that possesses this property [72][73][74][75] . The voltage diagram is shown in Fig.…”

Section: Voltage Stability Margin Indexmentioning

confidence: 99%

Optimal distribution grid allocation of reactive power with a focus on the particle swarm optimization technique and voltage stability

Candra,

Alghamdi,

Hammid

et al. 2024

Sci Rep

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A structured approach to managing reactive power is imperative within the context of power systems. Among the restructuring initiatives in the electrical sector, power systems have undergone delineation into three principal categories: generation, transmission, and distribution entities, each of which is overseen by an independent system operator. Notably, active power emerges as the predominant commodity transacted within the electrical market, with the autonomous grid operator assuming the responsibility of ensuring conducive conditions for the execution of energy contracts across the transmission infrastructure. Ancillary services, comprising essential frameworks for energy generation and delivery to end-users, encompass reactive power services pivotal in the regulation of bus voltage. Of particular significance among the array of ancillary services requisite in a competitive market milieu is the provision of adequate reactive power to uphold grid safety and voltage stability. A salient impediment to the realization of energy contracts lies in the inadequacy of reactive power within the grid, which poses potential risks to its operational safety and voltage equilibrium. The optimal allocation of the reactive power load is predicated upon presumptions of consistent outcomes within the active power market. Under this conceptual framework, generators are afforded continual compensation for the provision of reactive power indispensable for sustaining their active energy production endeavors.

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Section: Voltage Stability Margin Indexmentioning

confidence: 99%

Optimal distribution grid allocation of reactive power with a focus on the particle swarm optimization technique and voltage stability

Candra,

Alghamdi,

Hammid

et al. 2024

Sci Rep

View full text Add to dashboard Cite

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A Method for the Computation of PV Curve using a Novel Voltage Control Method in Power Systems

et al. 2021

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L-Index-Based Technique for Voltage Collapse Prediction and Voltage Stability Enhancement in Electrical Power Systems

Alayande,

Hassan,

Olobaniyi

et al. 2024

AJERD

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Recent years have witnessed a notable increase in the occurrence of blackouts, especially in developing nations, attributed to the continuously growing demand on modern power networks. Given that the demand shows no signs of abating and is projected to increase further in the coming years, additional research on power system stability is imperative. This study, therefore, investigates voltage stability assessment in power systems using the L-index methodology, focusing on the Nigerian 28-bus system and the IEEE system. The L-index offers a practical means of identifying weak buses and evaluating voltage stability margins. Calculating L-index values for load buses under diverse conditions identifies critical points, with higher values indicating vulnerability. The research investigates injecting reactive power at load buses to prevent collapse, comparing outcomes with and without compensation. Analyzing the L-index's performance across varied loading scenarios confirms its precision in predicting breakdown points and identifying critical buses. Load flow analysis of the Nigerian 28-Bus system reveals that only bus 16 exceeds voltage limits, while line analysis shows total power losses. Increasing loadability exposes bus 16 as the weakest, supported by its low voltage magnitude. The research confirms bus 16 as the system's weakest point, guiding corrective measures to enhance stability and prevent collapse. Utilizing Matlab for implementation, this study contributes valuable insights into system vulnerability and provides a framework for improving voltage stability in power systems.

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The new steady state voltage stability analysis methods with computation loads separation technique in DC power systems

Cited by 3 publications

References 26 publications

Optimal distribution grid allocation of reactive power with a focus on the particle swarm optimization technique and voltage stability

Optimal distribution grid allocation of reactive power with a focus on the particle swarm optimization technique and voltage stability

A Method for the Computation of PV Curve using a Novel Voltage Control Method in Power Systems

L-Index-Based Technique for Voltage Collapse Prediction and Voltage Stability Enhancement in Electrical Power Systems

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