نتایج جستجو برای: fast fault estimation

تعداد نتایج: 542061  

2015
Fenghua Gao James S. Thorp Shibin Gao Anamitra Pal Katelynn A. Vance

This paper presents a fault classification method for transmission lines based on voltage phasors using classification and regression trees (CART). The proposed method is intended to aid system operators in understanding the outputs of a PMU only state estimator. Faults are classified into four categories when the estimator is positive sequence and into ten categories when the estimator is thre...

Journal: :Int. J. Systems Science 2016
Damiano Rotondo Marcin Witczak Vicenç Puig Fatiha Nejjari Marcin Pazera

Robust unknown input observer for state and fault estimation in discrete-time Takagi–Sugeno systems Damiano Rotondo, Marcin Witczak, Vicenç Puig, Fatiha Nejjari & Marcin Pazera To cite this article: Damiano Rotondo, Marcin Witczak, Vicenç Puig, Fatiha Nejjari & Marcin Pazera (2016): Robust unknown input observer for state and fault estimation in discrete-time Takagi–Sugeno systems, Internationa...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2007
Spilios D Fassois John S Sakellariou

An overview of the principles and techniques of time-series methods for fault detection, identification and estimation in vibrating structures is presented, and certain new methods are introduced. The methods are classified, and their features and operation are discussed. Their practicality and effectiveness are demonstrated through brief presentations of three case studies pertaining to fault ...

2007
Victor Ortiz Pavel Zuñiga Luis Naredo Alberto Gutierrez

This paper presents a procedure to obtain patterns from propagating signals in a SSSC FACTS device. The acquired patterns are suitable for neural network relay protection schemes for Fault Detection (FD), Phase Classification (PC) and Fault Zone Estimation (FZE). By considering two fault scenarios, the patterns are obtained through digital simulations which include effects of transducers and no...

1996
F. Joel Ferguson Jianlin Yu

A generic method to develop a defect monitoring system for IC processes, A comparison of new and old algorithms for a mixture estimation problem, The numerical evaluation of the maximum-likelihood estimate of a subset of mixture proportions, [19] LOQO an efficient implementation of an interior-point method for large scale linear and/or quadratic programming problems, available via ftp://elib.zi...

2002
Changcheng Huang Srinivas Makam

It is expected that MPLS-based recovery could become a viable option for obtaining faster restoration than layer 3 rerouting. To deliver reliable service, however, MPLS requires a set of procedures to provide protection for the traffic carried on the label switched paths. In this article we propose a path protection mechanism that is simple, scalable, fast, and efficient. We describe in detail ...

2017
Manh Quan Nguyen Olivier Sename Luc Dugard

In this paper, an actuator fault estimation problem is tackled, based on the LPV approach. First, the actuator fault is modeled in the form of a multiplicative fault by using a constant coefficient representing the loss of efficiency of the actuator’s power α. Therefore, the estimation of a time varying faulty actuator can be transformed into the estimation of a constant coefficient α. Then, th...

2002
Stojan Peršin Boris Tovornik Nenad Muškinja Drago Valh

The paper integrates demands for safe processing and fault detection techniques. An early detection of the fault occurrence is vitally important since it contributes to avoidance of product deterioration, performance degradation, major damages to the machinery itself and damages to human health or even loss of lives. Some fault detection methods using analytical redundancy are described and pri...

Journal: :IEEE Transactions on Power Delivery 2015

2013
B. A. Umadevi R. M. Sasiraja

In this paper a new method is proposed that can be used to differentiate faults from switching transients. The method is primarily intended for use in systems where fast fault detection and fast fault clearing before the first peak of the fault current are required. An industrial system, in which high short-circuit power is desired but in which high shortcircuit currents cannot be tolerated is ...

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