نتایج جستجو برای: distance protection
تعداد نتایج: 415174 فیلتر نتایج به سال:
Adaptive power system protection can be used to improve the performance of existing protection schemes under certain network conditions. However, their deployment in the field is impeded by their perceived inferior reliability compared to existing protection arrangements. Moreover, their validation can be problematic due to the perceived high likelihood of the occurrence of failure modes or inc...
Drawing on the institution-based view of intellectual property (IP) rights, we argue that “distance” in IP protection strength MNEs’ home and host countries reduces ability MNEs to innovate at foreign subsidiary locations. We contend this logic applies both directions—i.e., (1) downward direction, when originating from stronger regimes weaker regimes, (2) upward regimes. Furthermore, suggest ne...
The introduction of series capacitors in transmission lines causes problems terms reliability and the security distance protection relays. As is widely used network, challenge applying it to compensated has been taken up by utilities relay manufacturers various ways. In field power system protection, developments are largely driven manufacturers, often not published academic literature; status ...
Lightning protection design for a structure using Rolling Sphere Method is undertaken. In this case radius of the sphere is calculated using the ‘Leader Potential Concept’ for calculating striking distance. The purpose is to evaluate lightning protection performance based on the ‘Leader Potential Concept’. It is also demonstrated how low grounding resistance and bonding could be used to mitigat...
This paper presents the impact of the Static Synchronous Compensator (STATCOM) on the performance of distance protection of EHV transmission lines. A 400kV transmission system having midpoint connected STATCOM with its control circuit is modeled using MATLAB/SIMULINK software. The impact of STATCOM on distance relay for different fault conditions and different fault locations is analyzed. Simul...
Background Increasing the x-ray film to focus distance (FFD), has been recommended as a practical dose optimization tool for patients undergoing conventional radiological procedures. In the previous study, we demonstrated a 32% reduction in absorbed dose is achievable due to increasing the FFD from 100 to 130 cm during pediatric chest radiography. The aim of this study was to examine whether in...
Periprocedural neurological complications (PNCs) after carotid stenting were retrospectively analyzed to determine the risk factors with the use of various protective devices. Forty-three lesions in 40 patients were treated by carotid stenting with distal balloon protection for nearly all postdilation procedures and some predilation procedures. The following variables were statistically analyze...
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