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It has been observed that the French electric load series possesses outliers and breaks. Outliers are deviant data points while breaks are lasting abrupt changes in the stochastic pattern of the series. It turns out that outliers and breaks significantly degrade the reliability and accuracy of conventional day-ahead estimation and forecasting methods.(More)
The Auxiliary Vector (AV) algorithm iteratively generates a sequence of filters that converge to the Minimum Variance Distortionless Response filter. The early, nonas-ymptotic elements generated by this algorithm offer favorable bias/variance characteristics and outperform in mean-square filter estimation error, filters generated by other iterative methods.(More)
The vision of the smart grid is predicated upon pervasive use of modern digital communication techniques in today's power system. As wide area measurements and control techniques are being developed and deployed for a more resilient power system, the role of communication networks is becoming prominent. Advanced communication infrastructure provides much(More)
A new robust Kalman filter is proposed that detects and bounds the influence of outliers in a discrete linear system, including those generated by thick-tailed noise distributions such as impulsive noise. Besides outliers induced in the process and observation noises, we consider in this paper a new type called structural outliers. For a filter to be able(More)
—The vision of a smart grid is predicated upon pervasive use of modern digital communication techniques to today's power system. As wide area measurements and control techniques are being developed and deployed for a more resilient power system, the role of communication network is becoming prominent. Power system dynamics gets influenced by the(More)
The declining reliability of the US electric power system is raising major concerns amongst both politicians and power engineers in the USA. One of the reasons put forward by the North Electric Reliability Council (NERC) is the detrimental role played by the protection systems during large disturbances, which tend to help the perturbations to propagate(More)
(ABSTRACT) Low frequency oscillations are detrimental to the goals of maximum power transfer and optimal power system security. A contemporary solution to this problem is the addition of power system stabilizers to the automatic voltage regulators on the generators in the power system. The damping provided by this additional stabilizer provides the means to(More)
The ability to detect defects on hardwood trees and logs holds great promise for the hardwood forest products industry. At every stage of wood processing, there is a potential for improving value and recovery with knowledge of the location, size, shape, and type of log defects. This paper deals with a new method that processes hardwood laser-scanned surface(More)
The autoregressive moving-average (ARMA) modeling of time series is popular and used in many applications. In this paper, we introduce a new robust method to estimate the parameters of a Gaussian ARMA model contaminated by outliers. This method makes use of the median and is termed ratio-of-medians estimator (RME). The ratios of medians are used to estimate(More)