Results 271 to 280 of about 7,837,746 (330)

Teager energy based dynamic phasor estimation

2012 Annual IEEE India Conference (INDICON), 2012
The ability of Phasor Measurement Units to measure the phase angle of input signals makes them suitable for dynamic events monitoring. However, under dynamic conditions, e.g., power swing, the steady state definition of the synchrophasors is no more valid and the measurement accuracy is inevitably lower.
Ranjana Sodhi, S C Srivastava, S N Singh
openaire   +1 more source

A Novel Distribution-Level Phasor Estimation Algorithm Using Empirical Wavelet Transform

IEEE transactions on industrial electronics (1982. Print), 2018
Distribution-level signals are often contaminated with harmonics and noise, along with dynamic conditions like frequency deviations. This paper proposes an empirical wavelet transform (EWT) based M-class distribution-level phasor estimation technique ...
Kapil Chauhan, M. V. Reddy, Ranjana Sodhi   +2 more
semanticscholar   +1 more source

Dynamic Harmonic Phasor Estimator Considering Frequency Deviation

IEEE Sensors Journal, 2021
The fundamental frequency of power system may deviate from the nominal value due to various reasons, such as load variation, subsynchronous resonance and fault occurrence. The maximum frequency deviation considered by the latest IEEE standard is 5 Hz.
Wenfan Li, Guogang Zhang, Muli Chen, Haojie Zhong, Yingsan Geng   +4 more
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Improvement of Phasor Estimation Accuracy by Prony-based Identification of Two Decaying DC Components

IEEE Power & Energy Society General Meeting, 2019
During transmission line faults, a sampled current signal can contain two decaying dc components (DDCs). A primary DDC develops on the faulted transmission line and a secondary DDC arises at a current transformer of the numerical relay.
J. Hwang
semanticscholar   +1 more source

DFT-Based Phasor Estimation for Removal of the Effect of Multiple DC Components

IEEE Transactions on Power Delivery, 2018
A current sampled signal in a faulted transmission line can contain multiple dc components, namely a primary decaying dc component (DDC), a secondary DDC, an auxiliary DDC, and a bias DDC, and these may be due to a faulted line, current transformer ...
J. Hwang, C. Song, M. Jeong
semanticscholar   +1 more source

Development of Dictionary-Based Phasor Estimator Suitable for P-Class Phasor Measurement Unit

IEEE Transactions on Instrumentation and Measurement, 2018
The paper proposes a simple phasor estimator by utilizing the dictionary-based sparse representation of signals for control and protection applications in power system. It is also observed that the proposed method is found to be suitable for extracting the fundamental component of the signal required for protective relays with few number of samples ...
Shaik Affijulla, Praveen Tripathy
openaire   +1 more source

A Teaching Tool for Phasor Measurement Estimation

IEEE Transactions on Power Systems, 2014
This paper discusses the design and usage of a Simulink-based phasor measurement unit (PMU) simulator package. The simulator and PMU data is available upon request from the first author. The motivation for developing the package is to provide a flexible environment for teaching phasor measurement and frequency estimation to advanced undergraduate and ...
Daniel Dotta, Joe H. Chow, David B. Bertagnolli   +2 more
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Diakoptic State Estimation Using Phasor Measurement Units

IEEE Transactions on Power Systems, 2008
This paper presents a diakoptic-based distributed state estimation (SE) algorithm suitable for large-scale power systems. In the proposed approach the large-scale power system is divided into a certain number of subsystems by removing tie line measurements. Based on diakoptic theory, the SE problem is then partitioned into a number of subproblems which
null Weiqing Jiang, V. Vittal, G.T. Heydt   +2 more
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Recursive phasor estimation algorithm for synchrophasor measurement

2015 IEEE International Workshop on Applied Measurements for Power Systems (AMPS), 2015
One of the enabling technologies for smart grid development are synchrophasor measurements typically performed by devices called phasor measurement unit (PMU), that produce synchronized subsecond high-resolution voltage and current measurements, so greatly augment the traditional response time of supervisory control and data acquisition measurements ...
Cuccaro, Pasquale, GALLO, Daniele, LANDI, Carmine, LUISO, Mario, ROMANO, Gianmarco   +4 more
openaire   +2 more sources

Two stage state estimator with phasor measurements

2009 International Conference on Power Systems, 2009
State estimator is an important tool for online monitoring, analysis and control of power systems. With the increased use of phasor measurement units in a power grid, utilization of synchro phasor measurements in State Estimation (SE) becomes essential.
K. Jamuna, K.S. Swarup
openaire   +1 more source