نتایج جستجو برای: phasor measurement unit pmu

تعداد نتایج: 805621  

2014
S. Azizi A. Salehi Dobakhshari S. A. Nezam Sarmadi A. M. Ranjbar G. B. Gharehpetian

Placement of phasor measurement units (PMUs) in power systems has often been formulated for achieving total network observability. In practice, however, the installation process is not implemented at once, but at several stages, because the number of available PMUs at each time period is restricted due to financial problems. This paper presents a novel integer linear programming framework for o...

Journal: :IEEE Transactions on Power Delivery 2021

The aim of this paper is to present a novel phasor measurement unit (PMU) data-based cable temperature monitoring method with an intended application towards facilitating dynamic line rating. First part the presents estimate and track 3-phase segment. benefit that no additional sensors are required be placed along cable. based on algorithm which gives accurate resistance estimates for segments ...

2015
Jyoti Paudel Xufeng Xu Karthikeyan Balasubramaniam Elham B. Makram

This paper aims to find strategic locations for additional Phasor Measurement Units (PMUs) installation while considering resiliency of existing PMU measurement system. A virtual attack agent is modeled based on an optimization framework. The virtual attack agent targets to minimize observability of power system by coordinated attack on a subset of critical PMUs. A planner agent is then introdu...

2015
Luis Fabiano dos Santos Galina Antonova Mats Larsson Sergio Fujii

This paper describes the latest developments in the wide area monitoring of electrical power grids, based on IEEE C37.118.1-2011 synchrophasor measurements. It outlines the fundamentals of synchrophasor systems, and focuses on the latest technological advancements and practical applications deployed in the existing and emerging power grids. With the emphasis on higher utilization of power syste...

Journal: :IEEE Access 2023

In this work, a robust subspace clustering algorithm is developed to exploit the inherent union-of-subspaces structure in data for reconstructing missing measurements and detecting anomalies. Our focus on processing an incessant stream of large-scale such as synchronized phasor power grid, which challenging due computational complexity, memory requirement, corrupt observations. order mitigate t...

In this paper, a new method based on branch placement for the optimal positioning of Phasor Measurement Units (PMUs) in power systems is proposed. In this method, the PMUs are in type of single-channel and are installed at the beginning of the branches. Therefore, they are able to measure the bus voltages. Also, the installation of the PMUs on the branches increases the security of observabilit...

Journal: :Iet Generation Transmission & Distribution 2021

Zero-sequence currents in high-voltage power systems during normal operation can have a significant influence on nearby infrastructure. It is therefore necessary to gain insight into typical levels of zero-sequence variety operational situations. Measurements provide this insight. When performing measurements, one needs know the uncertainty associated with measurement draw accurate conclusions....

Journal: :Energies 2022

Synchrophasor estimation was mostly used in transmission systems the past, and it is difficult to directly apply an existing synchrophasor algorithm a distribution system with more complex structure environment. A high accuracy fast response speed required complete calculation of phasor face changeable power signal network. Therefore, enhanced all-phase discrete Fourier transform (e-apDFT) prop...

Journal: :Energies 2023

Distribution system state estimation (DSSE) has been introduced to monitor distribution grids; however, due the incorporation of distributed generations (DGs), traditional DSSE methods are not able reveal operational conditions active networks (ADNs). calculation depends heavily on real measurements from measurement devices in networks. However, accuracy and results can be significantly affecte...

2013
Mohd Rihan Mukhtar Ahmad

Power grids, throughout the world, are operated as large interconnected networks to ensure reliability of supply in an economic way. The interconnected nature of power network makes it vulnerable and sometimes even a small disturbance in the grid may propagate and result in a blackout. Investigations into major blackouts of the decade in the world have identified inadequate monitoring of the dy...

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