Results 31 to 40 of about 2,856 (282)

Numerical Simulation of the Dynamic Responses of Electric Power Fitting of Transmission Lines after Ice Shedding

open access: yesShock and Vibration, 2022
As the key connecting components between tower and conductors, electric power fittings play an important role in the provision of the safe operation of transmission lines.
Zhongfei Ye   +3 more
doaj   +1 more source

Study on the Dynamic Characteristics of Tensional Force for Ice Accumulated Overhead Lines Considering Instantaneous Wind Speed

open access: yesEnergies, 2023
Icing is one of the key factors affecting the security and reliability of power system operation. Ice accumulation on the overhead line (OHL) conductors is often accompanied by strong winds, whose magnitude and direction are varied constantly, which ...
Meng Li   +5 more
doaj   +1 more source

Galloping Stability and Wind Tunnel Test of Iced Quad Bundled Conductors considering Wake Effect

open access: yesDiscrete Dynamics in Nature and Society, 2020
A new quad bundle conductor galloping model considering wake effect is proposed to solve the problem of different aerodynamic coefficients of each subconductor of iced quad bundle conductor.
Xiaohui Liu   +5 more
doaj   +1 more source

Légköri jegesedésnek kitett villamos távvezetékek numerikus vizsgálata [PDF]

open access: yes, 2016
Azokban az országokban, ahol a légköri jegesedés gyakorta okoz komoly károkat a mérnöki építményekben, komoly hangsúlyt fektetnek e tudományterület alapos megismerésére és olyan technológiák, eljárások kifejlesztésére, amelyekkel a katasztrófák ...
Kálmán, Tamás
core   +1 more source

Experimental study on dynamic response characteristics of isolated‐span transmission lines after ice‐shedding

open access: yesHigh Voltage, 2023
The dynamic response characteristics, including maximum jump height and unbalanced tension, of isolated‐span transmission lines after ice‐shedding are investigated by means of experiments.
Guizao Huang   +4 more
doaj   +1 more source

Generalized Method Of Designing Unmanned Remotely Operated Complexes Based On The System Approach [PDF]

open access: yes, 2019
Self-propelled underwater systems belong to the effective means of marine robotics. The advantages of their use include the ability to perform underwater work in real time with high quality and without risk to the life of a human operator.
Blintsov, V. (Volodymyr)   +1 more
core   +2 more sources

Investigation on Influences of  Two Discrete Methods on Galloping Characteristics of Iced Quad Bundle Conductors

open access: yesAdvances in Civil Engineering, 2020
The partial differential galloping equation of iced quad conductors can be transformed into an ordinary differential galloping equation by two discrete methods: one is a direct discrete method and the other is an indirect discrete method.
Xiaohui Liu   +3 more
doaj   +1 more source

Galloping Control for Iced Conductors Using Tuned Mass Dampers with Fixed Time-Delayed Feedback

open access: yesShock and Vibration, 2019
A tuned mass damper with fixed time-delay feedbacks (TTMD) is first applied to suppress galloping of iced conductors. It is different from general time-delay feedback control, which also connects an added mass to a galloping body and can absorb ...
Guo Li, Li Li, Peng Zhu
doaj   +1 more source

Venting vapor apparatus Patent [PDF]

open access: yes, 1962
Fuel tank pressure-relief device for venting cryogenic liquid vapors through tubes with porous ...
Weber, R. J.
core   +1 more source

‘They Need to Hear You Say It’: Healthcare Professionals’ Perspectives on Barriers and Enablers to End‐of‐Life Discussions With Adolescents and Young Adults With Cancer

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT End‐of‐life conversations with adolescents and young adults (AYAs) with cancer rarely occur without the guidance of healthcare professionals. As a part of the ‘Difficult Discussions’ study, focused on palliative care and advance care planning discussions with AYAs with cancer, we investigated the factors that healthcare professionals identify ...
Justine Lee   +9 more
wiley   +1 more source

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