A Joint Frequency and Phasor Estimation Algorithm Using DFT Samples for Power Systems

2013 ◽  
Author(s):  
Luoyang Fang ◽  
Robert Griffin ◽  
Dongliang Duan ◽  
Liuqing Yang
Keyword(s):  
Power Systems ◽  
Estimation Algorithm ◽  
Joint Frequency ◽  
Phasor Estimation

RECURSIVE STATE ESTIMATION ALGORITHM FOR ILL-CONDITIONED POWER SYSTEMS

1994 ◽  
Vol 22 (5) ◽  
pp. 583-592
Author(s):  
S. C. TRIPATHY ◽  
SUNITA CHOHAN ◽  
R. BALASUBRAMANIAN
Keyword(s):  
Power Systems ◽  
State Estimation ◽  
Estimation Algorithm ◽  
Recursive State Estimation

scholarly journals Heterogeneous Inertia Estimation for Power Systems with High Penetration of Converter-Interfaced Generation

Energies ◽  
2021 ◽  
Vol 14 (16) ◽  
pp. 5047
Author(s):  
Diala Nouti ◽  
Ferdinanda Ponci ◽  
Antonello Monti
Keyword(s):  
Power Systems ◽  
Estimation Algorithm ◽  
System Stability ◽  
Rotational Inertia ◽  
Heterogeneous Distribution ◽  
Proper Actions ◽  
High Penetration ◽  
System Operator ◽  
And Control ◽  
System Inertia

The increasing and fast deployment of distributed generation is posing challenges to the operation and control of power systems due to the resulting reduction in the overall system rotational inertia and damping. Therefore, it becomes quite crucial for the transmission system operator to monitor the varying system inertia and damping in order to take proper actions to maintain the system stability. This paper presents an inertia estimation algorithm for low-inertia systems to estimate the inertia (both mechanical and virtual) and damping of systems with mixed generation resources and/or the resource itself. Moreover, the effect of high penetration of distributed energy resources and the resulting heterogeneous distribution of inertia on the overall system inertia estimation is investigated. A comprehensive set of case studies and scenarios of the IEEE 39-bus system provides results to demonstrate the performance of the proposed estimator.

Improved DFT-Based Phasor Estimation Algorithm Using Down-Sampling

2018 ◽  
Vol 33 (6) ◽  
pp. 3242-3245 ◽  
Author(s):  
Babak Jafarpisheh ◽  
Seyed M. Madani ◽  
Siamak Jafarpisheh
Keyword(s):  
Estimation Algorithm ◽  
Phasor Estimation

Phasor Estimation Algorithm for a Decaying AC Component using Pronys Method

2010 ◽  
Author(s):  
H.-K. Kim ◽  
S.-H. Kim ◽  
C.-Y. Choi ◽  
C.-H. Kim ◽  
D.-G. Lee ◽  
...  
Keyword(s):  
Estimation Algorithm ◽  
Phasor Estimation

scholarly journals Improved Performance of M-Class PMUs Based on a Magnitude Compensation Model for Wide Frequency Deviations

Mathematics ◽  
2020 ◽  
Vol 8 (8) ◽  
pp. 1361
Author(s):  
Jose Roberto Razo-Hernandez ◽  
Ismael Urbina-Salas ◽  
Guillermo Tapia-Tinoco ◽  
Juan Pablo Amezquita-Sanchez ◽  
Martin Valtierra-Rodriguez ◽  
...  
Keyword(s):  
Power Systems ◽  
Frequency Range ◽  
Magnitude Response ◽  
Modulation And Demodulation ◽  
Variable Function ◽  
Low Pass ◽  
Measurement Units ◽  
Phasor Estimation ◽  
Improved Performance ◽  
Reporting Rates

Phasor measurement units (PMUs) are important elements in power systems to monitor and know the real network condition. In order to regulate the performance of PMUs, the IEEE Std. C37.118.1 stablishes two classes—P and M, where the phasor estimation is carried out using a quadrature oscillator and a low-pass (LP) filter for modulation and demodulation, respectively. The LP filter plays the most important role since it determines the accuracy, response time and rejection capability of both harmonics and aliased signals. In this regard and by considering that the M-class filters are used for more accurate measurements, the IEEE Std. presents different M-class filters for different reporting rates (when a result is given). However, they can degrade their performance under frequency deviations if the LP frequency response is not properly considered. In this work, a unified model for magnitude compensation under frequency deviations for all the M-class filters is proposed, providing the necessary values of compensation to improve their performance. The model considers the magnitude response of the M-class filters for different reporting rates, a normalized frequency range based on frequency dilation and a fitted two-variable function. The effectiveness of the proposal is verified using both static and dynamic conditions for frequency deviations. Besides that, a real-time simulator to generate test signals is also used to validate the proposed methodology.

scholarly journals The Design of a Low Cost Phasor Measurement Unit

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2648 ◽  
Author(s):  
Antonio Delle Femine ◽  
Daniele Gallo ◽  
Carmine Landi ◽  
Mario Luiso
Keyword(s):  
Power Systems ◽  
High Performance ◽  
Low Cost ◽  
Data Communication ◽  
Estimation Algorithm ◽  
Building Blocks ◽  
Processing Technique ◽  
Measurement Unit ◽  
Signal Processing Technique ◽  
Phasor Measurement

The widespread diffusion of Phasor Measurement Units (PMUs) is a becoming a need for the development of the “smartness” of power systems. However, PMU with accuracy compliant to the standard Institute of Electrical and Electronics Engineers (IEEE) C37.118.1-2011 and its amendment IEEE Std C37.118.1a-2014 have typically costs that constitute a brake for their diffusion. Therefore, in this paper, the design of a low-cost implementation of a PMU is presented. The low cost approach is followed in the design of all the building blocks of the PMU. A key feature of the presented approach is that the data acquisition, data processing and data communication are integrated in a single low cost microcontroller. The synchronization is obtained using a simple external Global Positioning System receiver, which does not provide a disciplined clock. The synchronization of sampling frequency, and thus of the measurement, to the Universal Time Coordinated, is obtained by means of a suitable signal processing technique. For this implementation, the Interpolated Discrete Fourier Transform has been used as the synchrophasor estimation algorithm. A thorough metrological characterization of the realized prototype in different test conditions proposed by the standards, using a high performance PMU calibrator, is also shown.

Adaptive phasor estimation algorithm to enhance numerical distance protection

2017 ◽  
Vol 11 (5) ◽  
pp. 1170-1178 ◽  
Author(s):  
Arash Mahari ◽  
Majid Sanaye-Pasand ◽  
Sayyed Mohammad Hashemi
Keyword(s):  
Estimation Algorithm ◽  
Numerical Distance ◽  
Distance Protection ◽  
Phasor Estimation
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