نتایج جستجو برای: faulted joint

تعداد نتایج: 190622  

Journal: :Water Resources Research 2022

Abstract Groundwater dynamics in continental rift zone settings remain poorly understood because of the spatial heterogeneity flow, storage, and recharge dynamics. The Central Kenya Rift is an excellent example where, though groundwater important for domestic, irrigation, geothermal energy exploitation, its hydrogeological properties largely unknown. Existing conceptual models assume flow from ...

2004
Michele L. Cooke Susan Murphy

[1] We examine the work energy budget of actively deforming fault systems in order to develop a means of examining the systemic behavior of complex fault networks. Work done in the deformation of a faulted area consists of five components: (1) work done against gravity in uplift of topography (Wgrav); (2) internal energy of the strained host rock (Wint); (3) work done resisting friction during ...

2017
Dimitrios Tzelepis

This paper presents a new method for locating faults in multi-terminal direct current (MTDC) networks incorporating hybrid transmission media (HTMs), including segments of underground cables (UGCs) and overhead lines (OHLs). The proposed travelling wave (TW) type method uses continuous wavelet transform (CWT) applied to a series of line current measurements obtained from a network of distribute...

Journal: :CoRR 2017
Tommaso Coletta Philippe Jacquod

Classes of performance measures expressed in terms of H2-norms have been recently introduced to quantify the response of coupled dynamical systems to external perturbations. For the specific case of electric power networks, these measures quantify for instance the primary effort control to restore synchrony, the amount of additional power that is ohmically dissipated during the transient follow...

2014
Vinay Kumar

Given a set of points P, a conflict-free coloring of P is an assignment of colors to points of P, such that there exist a point p in any subset of P whose color is distinct from all other points in that subset of P. This notion is motivated by frequency assignment in wireless cellular networks: one would like to minimize the number of frequencies (colors) assigned to base stations (points), suc...

2008
J. Faiz B. M. Ebrahimi M. Valavi H. A. Toliyat

In this paper, winding function method (WFM), applied to a faulted synchronous generator, is modified and is used for online diagnosis of mixed eccentricity fault. For the first time, the static and mixed eccentricities are modeled in synchronous generators. A modified winding function (MWF) method introduced here is more precise compared with previous methods. This MWF enables to compute the a...

2016
M. Jiang S. M. Peng H. B. Zhang C. H. Xu H. Y. Xiao F. A. Zhao Z. J. Liu X. T. Zu

In this study, an ab initio molecular dynamics method is employed to investigate how the existence of stacking faults (SFs) influences the response of SiC to low energy irradiation. It reveals that the C and Si atoms around the SFs are generally more difficult to be displaced than those in unfaulted SiC, and the corresponding threshold displacement energies for them are generally larger, indica...

2014
K. Priyanka C. Venkatesh

This paper introduces an approach to detect the existence of the faulted switch, identify which switch is faulty, and reconfigure the STATCOM. This approach is illustrated on an elevenlevel STATCOM and the effect on the dynamic performance and the total harmonic distortion (THD) is analyzed Many static synchronous compensators (STATCOMs) utilize multilevel converters due to the following: 1) lo...

Journal: :IEEE Trans. Information Forensics and Security 2015
Masahiro Kaminaga Hideki Yoshikawa Toshinori Suzuki

A new fault attack, double counting attack (DCA), on the precomputation of 2t-ary modular exponentiation for a classical RSA digital signature (i.e., RSA without the Chinese remainder theorem) is proposed. The 2t-ary method is the most popular and widely used algorithm to speed up the RSA signature process. Developers can realize the fastest signature process by choosing optimum t. For example,...

2012
Mohamed F. Abdel-Fattah Matti Lehtonen

This paper presents a novel transient current differential algorithm for earth fault detection in unearthed (isolated) and compensated neutral medium voltage (MV) networks. The proposed algorithm uses the transient residual currents, which are very sensitive for earth faults detection. The transient values of residual currents are calculated for each feeder in the network and used as an earth f...

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