نتایج جستجو برای: fault imaging

تعداد نتایج: 520379  

K. Gorgani Firouzjah

This paper presents a novel fault location method for series compensated transmission lines. It is established based on synchronized voltages sampling and Thevenin impedance from both ends of series compensated transmission line. The method is based on the use of phasor measurement units (PMU) technology which is aimed to be independent of current measurements, fault type, fault resistance, fau...

ژورنال: حقوق پزشکی 2019

Medical treatments are divided to essential and unnecessary treatments. Treatments and cosmetic surgery in the category of unnecessary treatments and reconstructive surgery and other treatments for example heart, liver and kidney transplant surgery placed in the category of essential treatments. Compensation basis in essential treatments in Iranian law, among basics of the negligence, strict li...

By increasing the penetration level of the inverter-based distributed generations (IBDGs) in power system, their fault ride through capability has become one of the essential issues of the new grid codes. This paper proposes a novel method to limit inverter fault currents which are used in DGs. To achieve FRT, interface-inverter operates as a controlled voltage source during normal operation as...

In this paper, a new fast and accurate method for fault detection, location, and classification on multi-terminal DC (MTDC) distribution networks connected to renewable energy and energy storages presented. MTDC networks develop due to some issues such as DC resources and loads expanding, and try to the power quality increasing. It is important to recognize the fault type and location in order ...

In this paper, a single-ended fault location method is presented based on a circuit breaker operation using the frequencies of traveling waves. The proposed method receives the required data from voltage traveling waves with the aid of Fast Fourier Transform (FFT) and Wavelet Transform. Then, the Artificial Neural Network (ANN) identifies fault type and determines its location. In order to eval...

Journal: :مهندسی سازه 0
حمید صدیق

the tabriz fault in northwest of iran is the important geological structure in our country which historical earthquakes were recorded around it. the purpose of this paper is the study of tabriz fault seismotectonic activity. the method of research is drawing 23 cross section vertical to tabriz fault between tabriz and bostan-abad distinguish mountain-front faceting, mountain-front sinuosity and...

F. Wang L. Fang,

In the fault diagnosis of automaton, the vibration signal presents non-stationary and non-periodic, which make it difficult to extract the fault features. To solve this problem, an automaton fault diagnosis method based on morphological component analysis (MCA) and ensemble empirical mode decomposition (EEMD) was proposed. Based on the advantages of the morphological component analysis method i...

F. Wang L. Fang,

In the fault diagnosis of automaton, the vibration signal presents non-stationary and non-periodic, which make it difficult to extract the fault features. To solve this problem, an automaton fault diagnosis method based on morphological component analysis (MCA) and ensemble empirical mode decomposition (EEMD) was proposed. Based on the advantages of the morphological component analysis method i...

Journal: :archives of cardiovascular imaging 0
adil sattar department of internal medicine, university of new mexico som, albuquerque, new mexico; department of internal medicine, university of new mexico som, albuquerque, new mexico. tel: +516-3010735, fax: +505-2724356 siegfried yu department of internal medicine, southern illinois university som, springfield, illinois warren k. laskey department of internal medicine, university of new mexico som, albuquerque, new mexico

conclusions our case is the first report of ivus imaging of subclavian stenosis resulting from takayasu’s arteritis and provides insight into the pathology behind such lesions. introduction takayasu’s arteritis (ta) is a chronic, idiopathic, inflammatory disease that affects large elastic arteries, including the aorta and its main branches. no consensus exists currently on the superiority of su...

Journal: :Lithosphere 2021

Abstract Fault damage zones have a higher upscaled permeability than the host rock because of fracture intensity therein. Fracture distribution in zone depends highly on geometry fault segments. However, precise images architectural elements large-scale faults at depth are difficult to obtain by seismic acquisition and imaging techniques. We present numerical method that generates segments mult...

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