A PMU-Based Method for Smart Transmission Grid Voltage Security Visualization and Monitoring

Su, Heng-Yi; Liu, Tzu-Yi

doi:10.3390/en10081103

Cited by 13 publications

(3 citation statements)

References 25 publications

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“…The work of [63] is focused on using the PMU data for determining the stability boundary of the system and monitoring if the system is in safe working conditions. The visualization [62] determines the safe conditions using PMU data and random bits forest algorithm.…”

Section: A Monitoring Taskmentioning

confidence: 99%

A Review of Visualization Methods for Cyber-Physical Security: Smart Grid Case Study

Cobilean,

Mavikumbure,

Mcbride

et al. 2023

IEEE Access

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Cyber-Physical Systems (CPSs) are becoming increasingly complex and interconnected as they attempt to meet the demands of evolving society. As a result, monitoring and maintaining them becomes a more complex and demanding task for control system operators and cyber defenders. While the literature on visualization techniques in the context of cybersecurity is extensive, the same cannot be said for studies on visualization for the security of cyber-physical systems. This paper aims to fill that gap by: 1) defining the main features of a visualizations workflow for security visualizations in cyber-physical systems. The workflow includes the acquisition of cyber and physical data, processing of data, selection, and configuration of both visualization tools and end-user interactions. 2) Providing an overview of cyber-physical security visualization systems, with a focus on smart grids as a case study. Finally, we use the perspectives gained from this analysis to provide insights and directions for future research and design of cyber-physical visualization techniques.

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Section: A Monitoring Taskmentioning

confidence: 99%

A Review of Visualization Methods for Cyber-Physical Security: Smart Grid Case Study

Cobilean,

Mavikumbure,

Mcbride

et al. 2023

IEEE Access

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“…The main purpose of improving network measurement redundancy is to improve the accuracy of state estimation. The distribution network state estimation technology is expected to be able to monitor the operating status of the system accurately and provide reliable data for other advanced management software of the active distribution network, such as transient stability [24], voltage security visualization [25], fault location identification [26], dynamic control strategies [27] and so on. Therefore, taking state estimation accuracy instead of network measurement redundancy into the OPP problem can be more helpful to improve the observability and controllability of the distribution network.…”

Section: Introductionmentioning

confidence: 99%

Multi Objective for PMU Placement in Compressed Distribution Network Considering Cost and Accuracy of State Estimation

et al. 2019

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A phasor measurement unit (PMU) can provide phasor measurements to the distribution network to improve observability. Based on pre-configuration and existing measurements, a network compression method is proposed to reduce PMU candidate locations. Taking the minimum number of PMUs and the lowest state estimation error as the objective functions and taking full observability of distribution network as the constraint, a multi objective model of optimal PMU placement (OPP) is proposed. A hybrid state estimator based on supervisory control and data acquisition (SCADA) and PMU measurements is proposed. To reduce the number of PMUs required for full observability, SCADA measurement data are also considered into the constraint by update and equivalent. In addition, a non-dominated sorting genetic algorithm-II (NSGA-II) is applied to solve the model to get the Pareto set. Finally, the optimal solution is selected from the Pareto set by the technique for order preference by similarity to ideal solution (TOPSIS). The effectiveness of the proposed method is verified by IEEE standard bus systems.

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“…Recent studies have resulted in TE estimation methods for wide-area monitoring that utilizes synchrophasor measurement technology (SMT) attained based on PMUs. The authors of Reference [34] have developed a TE method according to a least-squares procedure to determine the parameters from local measurements. In the study by Angel Perez et al, an improved TE method for real-time voltage stability assessment using wide-area information from PMUs was proposed [35].…”

Section: Introductionmentioning

confidence: 99%

Real-Time Voltage Stability Assessment Method for the Korean Power System Based on Estimation of Thévenin Equivalent Impedance

Lee

Han²

2019

Applied Sciences

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This study aims to develop a real-time assessing methodology for a power systems voltage stability. The proposed algorithm is based on the Thévenin equivalent (TE) impedance estimation method, which applies the phasor measurement unit technology practically. To present an accurate analysis of the real-time situations of a power system, the developed voltage stability index can be used as useful information for system operators to establish appropriate countermeasures. Moreover, by considering the results of voltage stability margin calculation within the Korean power system, the effect of voltage stability on the dynamic behavior of the system is presented. Furthermore, to increase the accuracy, load model parameter estimation is introduced in this algorithm. The load model might be used for calculating the stability margin more accurately. The power-voltage curve is drawn in theory using the TE voltages and impedances. To validate the case study of the proposed method, simulations were executed using the Matlab software. The simulations demonstrated the effectiveness of the proposed method and detected voltage stability/instability under severe contingency scenarios.

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A PMU-Based Method for Smart Transmission Grid Voltage Security Visualization and Monitoring

Cited by 13 publications

References 25 publications

A Review of Visualization Methods for Cyber-Physical Security: Smart Grid Case Study

A Review of Visualization Methods for Cyber-Physical Security: Smart Grid Case Study

Multi Objective for PMU Placement in Compressed Distribution Network Considering Cost and Accuracy of State Estimation

Real-Time Voltage Stability Assessment Method for the Korean Power System Based on Estimation of Thévenin Equivalent Impedance

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