Results 261 to 270 of about 7,837,746 (330)

Synchro-Phasor Assisted State Estimation (SPASE)

2012 IEEE PES Innovative Smart Grid Technologies (ISGT), 2012
This paper describes development of a Synchro-Phasor Assisted State Estimator (SPASE). In addition to having the capability to incorporate voltage and current phasor measurements, this state estimator provides some novel metrics related to measurement configuration and quality in order to improve reliability, accuracy, solution performance and ...
Ali Abur, Floyd Galvan
openaire   +1 more source

IIR Cascaded-Resonator-Based phasor estimation

Measurement, 2021
Abstract The multiple-resonator (MR) filter structure has been proposed in previous works as a convenient approach to the dynamic harmonic analysis. Later, the cascaded-resonator (CR)-based filters for the off-nominal frequency harmonics analysis, MR-based like, has been proposed. In this article, the aim is to use the infinite-impulse-response (IIR)
openaire   +1 more source

Shanks' Method for Dynamic Phasor Estimation

IEEE Transactions on Instrumentation and Measurement, 2008
A new algorithm for phasor estimation is proposed. It is based on a signal model that allows amplitude and phase dynamic variations. An autoregressive moving average (ARMA) model is assumed for the oscillating signal. Its autoregressive part is fixed, and it is defined only by the nominal fundamental frequency.
Alejandro Torres Munoz, Jose Antonio de la O. Serna   +1 more
openaire   +1 more source

Accurate phasor estimation during power swing

2017 Innovations in Power and Advanced Computing Technologies (i-PACT), 2017
In a power system network, the detection of fault during power oscillation is one of the major issues of concern. The behavior of voltages and currents in a fault is same during a power swing. A Power Swing Blocking technology by using phasor analysis can be used to differentiate between a fault and power swing.
Tapas Kumar Patel, Sarat Chandra Swain, Prafulla Chandra Panda, Subodh Kumar Mohanty   +3 more
openaire   +1 more source

Hybrid approach for immunisation of DFT‐based phasor estimation method against decaying DC components

IET Science, Measurement & Technology, 2019
In addition to high-order harmonic and noise components, the fault current may contain decaying DC components which highly affect the estimated fundamental frequency phasor.
Mehdi Allahbakhshi, Mohsen Tajdinian, A. Seifi, M. Z. Jahromi, Alireza Bagheri   +4 more
semanticscholar   +1 more source

An improved phasor assisted state estimator

2009 IEEE Power & Energy Society General Meeting, 2009
Conventionally, state estimation programs are being run at an interval of 3–5 minutes in modern energy management systems. The Wide Area Monitoring System (WAMS), utilizing synchro-phasor data, offers a great promise in improving the system state estimation. The phasors can be acquired and refreshed at every 20–50ms. This paper presents a new method to
Ranjana Sodhi, S. C. Srivastava, S. N. Singh   +2 more
openaire   +1 more source

Assessment of DC offset in fault current signal for accurate phasor estimation considering current transformer response

IET Science, Measurement & Technology, 2019
This study demonstrates the accurate signal model to be used for fault generated instantaneous current signals containing decaying DC offset by considering initial loading conditions and response of obvious non-ideal current transformer (CT).
P. D. Achlerkar, B. K. Panigrahi
semanticscholar   +1 more source

Damping algorithm based on phasor estimation

2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194), 2002
The paper describes a new method to generate the reactance reference for a TCSC, which has been installed in order to provide damping in a power system. The knowledge of the expected oscillation frequency in the power system is used to create a coordinate system, which rotates with that frequency.
L. Angquist, C. Gama
openaire   +1 more source

Modified DFT-Based Phasor Estimation Algorithms for Numerical Relaying Applications

IEEE Transactions on Power Delivery, 2018
In this paper, new modifications of the conventional full-cycle and half-cycle discrete Fourier transform (DFT)-based phasor estimation algorithms are proposed.
K. Silva, F. Nascimento
semanticscholar   +1 more source

Improved DFT-Based Phasor Estimation Algorithm Using Down-Sampling

IEEE Transactions on Power Delivery, 2018
Fast and accurate fundamental phasor-estimation is a challenging task in digital relays. This letter proposes an improved discrete Fourier transform (DFT)-based phasor estimation algorithm.
Babak Jafarpisheh, S. M. Madani, Siamak Jafarpisheh   +2 more
semanticscholar   +1 more source