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RISEnsuring the Structural Safety of Overhead Transmission Lines by Design
Publisher: ASCE
Abstract: During service, transmission lines (TLs) will be subjected to unbalanced longitudinal loads due to events such as conductor breakage, insulator failure, and sudden ice shedding, which may damage TLs and subsequently hinder ...
Improvement of the Snow Depth in the Common Land Model by Coupling a Two-Dimensional Deterministic Ensemble Model with a Variational Hybrid Snow Cover Fraction Data Assimilation Scheme and a New Observation Operator
Publisher: American Meteorological Society
Abstract: uring snow cover fraction (SCF) data assimilation (DA), the simplified observation operator and presence of cloud cover cause large errors in the assimilation results. To reduce these errors, a new snow cover depletion ...
Dynamic Response of Tower-Line System Induced by Insulator Breakage Considering the Collision between the Conductor and the Ground Surface
Publisher: ASCE
Abstract: Insulator fatigue, lighting strike, or flashover could result in the breakage of insulator strings. Insulator breakage can cause conductor impingement on the ground, which is a threat to the safe operation of a transmission ...
Characteristics and Control of the Draft-Tube Flow in Part-Load Francis Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Under part-load conditions, a Francis turbine often suffers from very severe low-frequency and large-amplitude pressure fluctuation, which is caused by the unsteady motion of vortices (known as ...