Results 251 to 260 of about 7,837,746 (330)

Dynamic Phasor Estimation by Symmetric Taylor Weighted Least Square Filter

IEEE Transactions on Power Delivery, 2020
Phasor estimates produced by the Taylor-based weighted least square filter (TWLS) can be erroneous if the reference frequency is not close to its real value.
Milovan Radulovic, Ž. Zečević, B. Krstajić   +2 more
semanticscholar   +1 more source

A High-Accuracy Phasor Estimation Algorithm for PMU Calibration and Its Hardware Implementation

IEEE Transactions on Smart Grid, 2020
Phasor measurement units (PMUs) are one of the most effective devices for measuring power system dynamics, and it is critically important that they have good performance. This paper proposes a high-accuracy synchrophasor estimation algorithm and builds a
S. Xu, H. Liu, T. Bi, K. Martin
semanticscholar   +1 more source

State Estimlatjon with Phasor Measurements

IEEE Transactions on Power Systems, 1986
The recent introduction of microprocessors into substations for protection and control makes it possible to measure positive sequence voltage phasors and positive sequence transmission line current phasors in real time. It is necessary to synchronize sampling clocks in various substations in order to put the phasors on a common reference.
A. G. Phadke, J. S. Thorp, K. J. Karimi
openaire   +1 more source

Phasor-assisted Hybrid State Estimator

Electric Power Components and Systems, 2010
Abstract This article proposes a simple and effective approach to incorporate phasor measurements in the existing traditional supervisory control and data acquisition measurements based state estimation software. A phasor assisted hybrid non-linear state estimator has been proposed, where both supervisory control, data acquisition, and phasor ...
Ranjana Sodhi, S. C. Srivastava, S. N. Singh   +2 more
openaire   +1 more source

PMU Phasor Estimation Using Different Techniques

2021
Many models of phasor measurement units (PMU) have been implemented; however, few dynamic models have been developed when the power system parameters change. It is necessary to use a method that can somehow estimate the frequency and correct the phasors. The conventional way to determine frequency is to detect zero crossings per unit time.
Hamid Bentarzi, Abderrahmane Ouadi
openaire   +1 more source

Application of phasor & frequency estimation techniques in phasor measurement unit

2016 7th India International Conference on Power Electronics (IICPE), 2016
The real time high accuracy measurement of waveform phasors is one of the many open challenges that need to be addressed for monitoring of power grids. In the paper accuracy of Discrete Fourier Transform (DFT) and Taylor Expansion Weighted Least Square (TWLS) phasor estimation techniques are compared using single phase Phasor Measurement Unit (PMU ...
Mansi Vats, Sangeeta Kamboj
openaire   +1 more source

Implementation Techniques for Frequency Phasor Estimation in Phasor Measurement Units (PMUs)

2018 3rd International Conference On Internet of Things: Smart Innovation and Usages (IoT-SIU), 2018
For declamatory scale execution of wide area measurement systems (WAMS) using synchronizedphasor measurement units (PMUs) and phasor data concentrators (PDCs),gives a new direction to the power systems in terms of protection, monitoringand controlling. PMU technology provides the both magnitude and the phase angle in real time with sure accuracy.
Alok Jain, Abhishek Bhardwaj, Sanjay Kumar, Suman Bhullar   +3 more
openaire   +1 more source

Energy Theory Based Dynamic Adaptive Phasor Estimation for Smart Electric Grid

IEEE transactions on industry applications
Phasor measurement units (PMUs) have been widely deployed for power grid monitoring, supporting system analytics, protection, automation, and control.
HyoJong Lee, Chuan Qin, Amal Srivastava
semanticscholar   +1 more source

A Review of Phasor Estimation Algorithms

2020 3rd International Colloquium on Intelligent Grid Metrology (SMAGRIMET), 2020
In this paper the most commonly used algorithms for estimating phasor parameters are presented.The most algorithms based on recursive and non-recursive DFT algorithm are presented too. For each algorithm isshown: advantages, disadvantages, mode of operation and possible future research.
Kovacic, Marko, Jurcevic, Marko, Malaric, Roman, Kunac, Antonijo   +3 more
openaire   +3 more sources

Phasor Estimation From Phasorlets

IEEE Transactions on Instrumentation and Measurement, 2005
The mathematical formulation for estimating phasors from phasorlets, obtained from signal segments of a fraction of a cycle, is established and the frequency responses of the phasorlet generator filters are evaluated. From the theory and the numerical simulations it is concluded that, when the signal segment involved in the phasorlet generation ...
openaire   +1 more source