Journal ArticleDOI
Testing and Validation of Power System Dynamic State Estimators Using Real Time Digital Simulator (RTDS)
TLDR
In this article, the authors present an approach to test and validate a number of power system dynamic state estimation (PSDSE) algorithms, utilizing Real Time Digital Simulator (RTDS), a real-time simulation tool.Abstract:
This paper presents an approach to test and validate a number of power system dynamic state estimation (PSDSE) algorithms, utilizing Real Time Digital Simulator (RTDS), a real-time simulation tool. WSCC 9-bus and IEEE 30-bus systems have been utilized to demonstrate the proposed approach. The test systems are developed on the RSCAD software of the RTDS. The conventional remote terminal unit (RTU) measurements and the phasor measurement unit (PMU) measurements are sent from the RTDS runtime environment to the MATLAB based PSDSE application at regular intervals for the estimation of the states, using software-in-the-loop (SIL) configuration. The PSDSE is solved by utilizing the extended Kalman filter (EKF), the unscented Kalman filter (UKF), and the cubature Kalman filter (CKF) approaches, and their relative performances are studied with the help of the simulation results on the two test systems.read more
Citations
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Journal ArticleDOI
A Prediction-Error Covariance Estimator for Adaptive Kalman Filtering in Step-Varying Processes: Application to Power-System State Estimation
TL;DR: A new method for the estimation of the prediction-error covariances of a Kalman filter, which is suitable for step-varying processes and compared with other methods that estimate the KF stochastic parameters and with the well-known linear weighted least squares.
Journal ArticleDOI
Diagnosis of Outliers and Cyber Attacks in Dynamic PMU-Based Power State Estimation
TL;DR: A robust method to detect random errors and cyber-attacks targeting alternating current (AC) dynamic state estimation through false data injection and an improved detection of outliers in the smart grid literature are introduced.
Journal ArticleDOI
Modeling methodology and fault simulation of distribution networks integrated with inverter-based DG
TL;DR: In this article, a single inverter-based distributed generations (DGs) model based on the cascaded control structure is developed and a simulation model of distribution network with two DGs is established.
Journal ArticleDOI
Power System Tracking State Estimator for Smart Grid Under Unreliable PMU Data Communication Network
TL;DR: This paper presents a power system tracking state estimation (PSTSE) using cubature Kalman filter (CKF), and the effectiveness of the application of the CKF to the PSTSE has been demonstrated using two test systems.
Journal ArticleDOI
MMSE-Based Analytical Estimator for Uncertain Power System With Limited Number of Measurements
Hasnae Bilil,Hamid Gharavi +1 more
TL;DR: A new state estimation method referred to as “mean squared estimator” (MSE) to deal with the uncertain nature of the power system parameters, which aims at achieving minimum mean-squared error and benefits from the prior study of SPF.
References
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BookDOI
Power System State Estimation : Theory and Implementation
Ali Abur,Antonio Gómez Expósito +1 more
TL;DR: In this paper, Peters and Wilkinson this paper proposed a WLS state estimation algorithm based on the Nodal Variable Formulation (NVF) and the Branch Variable Factorization (BVF).
Journal ArticleDOI
Cubature Kalman Filters
TL;DR: A third-degree spherical-radial cubature rule is derived that provides a set of cubature points scaling linearly with the state-vector dimension that may provide a systematic solution for high-dimensional nonlinear filtering problems.
Journal ArticleDOI
Power System Static-State Estimation, Part I: Exact Model
Fred C. Schweppe,J. Wildes +1 more
TL;DR: Discussions center on the general nature of the problem, mathematical modeling, an interative technique for calculating the state estimate, and concepts underlying the detection and identification of modeling errors.
Journal ArticleDOI
Cubature Kalman Filtering for Continuous-Discrete Systems: Theory and Simulations
TL;DR: Results indicate that the CD-CKF markedly outperforms existing continuous-discrete filters in the context of radar in two respects- high dimensionality of the state and increasing degree of nonlinearity.
Journal ArticleDOI
Optimal Placement of Phasor Measurement Units for Power System Observability
TL;DR: In this paper, a method for optimal placement of phasor measurement units (PMUs) for complete observability of a power system for normal operating conditions, as well as for single branch outages is proposed.