Journal ArticleDOI
Performance of demodulation-based frequency measurement algorithms used in typical PMUs
TLDR
In this article, a method for evaluating the performance of demodulation-based frequency measurement algorithms in the presence of additive interfering sinusoids is presented, where the error induced by a single interfering tone is easily computed using the cascade algorithm's frequency response magnitude.Abstract:
This paper presents a method for evaluating the performance of demodulation-based frequency measurement algorithms in the presence of additive interfering sinusoids. Determination of the performance of amplitude measurement schemes under such conditions is straightforward once the frequency responses of the filters involved in the process are known, since the error induced by a single interfering tone is easily computed using the cascade algorithm's frequency response magnitude. This paper presents a similar method for predicting the worst error of frequency measurement schemes with respect to sinusoidal interference. Once acquainted with the proposed error prediction formula, the only difficulty in designing effective frequency measurement algorithms is the appropriate selection of output filters to achieve the specified performance. The method has been used successfully in designing frequency measurement algorithms currently used in Hydro-Que/spl acute/bec's special protection schemes.read more
Citations
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Journal ArticleDOI
Dynamic State Estimation in Power System by Applying the Extended Kalman Filter With Unknown Inputs to Phasor Measurements
TL;DR: In this paper, an extended Kalman filter (EKF) technique for dynamic state estimation of a synchronous machine using phasor measurement unit (PMU) quantities is developed.
Journal ArticleDOI
Synchrophasor Measurement Technology in Power Systems: Panorama and State-of-the-Art
TL;DR: This bibliography will aid academic researchers and practicing engineers in adopting appropriate topics and will stimulate utilities toward development and implementation of software packages.
Journal ArticleDOI
Online State Estimation of a Synchronous Generator Using Unscented Kalman Filter From Phasor Measurements Units
TL;DR: In this paper, the unscented Kalman filter (UKF) was used to estimate the rotor angle and speed of a synchronous generator in real time using PMU quantities.
Journal ArticleDOI
Wide Frequency Range Adaptive Phasor and Frequency PMU Algorithms
TL;DR: It turned out that FIR PMUs are best for meeting Std C37-118-1 metrics but they are outperformed by EKF under changing harmonics, and test results on three recent commercial PMU models further confirm that PMU algorithms meeting standard C 37- 118-1 can behave quite differently under dynamic conditions.
Proceedings ArticleDOI
Wide-area monitoring and control at Hydro-Quebec: past, present and future
TL;DR: In this article, a wide-area measurement-based secondary voltage control of the extensive park of dynamic shunt compensators in our grid using a single pilot voltage from the load center is presented.
References
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Journal ArticleDOI
On the use of windows for harmonic analysis with the discrete Fourier transform
TL;DR: A comprehensive catalog of data windows along with their significant performance parameters from which the different windows can be compared is included, and an example demonstrates the use and value of windows to resolve closely spaced harmonic signals characterized by large differences in amplitude.
Journal ArticleDOI
Estimating and interpreting the instantaneous frequency of a signal. I. Fundamentals
TL;DR: The concept of instantaneous frequency (IF), its definitions, and the correspondence between the various mathematical models formulated for representation of IF are discussed in this paper, and the extent to which the IF corresponds to the intuitive expectation of reality is also considered.
Estimating and Interpreting The Instantaneous Frequency of a Signal
TL;DR: In this paper, the concept of instantaneous frequency (IF) is extended to discrete-time signals, and the specific problem of estimating the IF of frequency-modulated (FM) discrete time signals embedded in Gaussian noise is explored.
Journal ArticleDOI
Frequency-domain and multirate adaptive filtering
TL;DR: An overview is presented of several frequency-domain adaptive filters that efficiently process discrete-time signals using block and multirate filtering techniques, including convergence properties and computational complexities of the adaptive algorithms and the effects of circular convolution and aliasing on the converged filter coefficients.
Journal ArticleDOI
Estimating and interpreting the instantaneous frequency of a signal. II. Algorithms and applications
TL;DR: The concept of instantaneous frequency (IF) is extended to discrete-time signals and methods based on a modeling of the signal phase as a polynomial have been introduced.