Multiple failures of transmission lines caused by climatic/atmospheric impact plague many electric power systems. Direct damage from such is quite huge, yet it marginal compared with the social reduction in supply electricity. As not economical to construct weatherproof lines, preventive actions should be employed most effective restoration, or reduce restoration time. A working group CIGRÉ (WG...

The non-resonant dynamic galloping of an iced, electrical transmission line is studied. Conditions and trends for the initiation of galloping have been given previously. Boundaries are presented here at which a periodic plunge or torsional motion loses stability and bifurcates into a quasi-periodic (mixed-mode) motion. Specific attention is given to the overall effects of an iced line’s eccentr...

We measured ferromagnetic resonance of a single submicron ferromagnetic strip, embedded in an on-chip microwave transmission line device. The method used is based on detection of the oscillating magnetic flux due to the magnetization dynamics, with an inductive pickup loop. The dependence of the resonance frequency on applied static magnetic field agrees very well with the Kittel formula, demon...

An on-line condition monitoring method for transmission line is proposed using electrical circuit theory and IT technology in this paper. It is reasonable that the circuit parameters such as resistance (R), inductance (L), conductance (g) and capacitance (C) of a transmission line expose the electrical conditions and physical state of the line. Those parameters can be calculated from the linear...

in this paper two nodes to model isotropic and anisotropic media in transmission line matrix method (tlm) are presented. by using these two nodes, the permeability and permittivity of an anisotropic media can be modeled simultaneously. another application of these nodes is in modeling media with permittivity and permeability less than one. in the conventional 2 dimensional tlm, the stubs repres...

An electric energy is an essential ingredient for the industrial and all around development of any country. An electrical power system consists of generators, transformers, transmission lines distribution lines etc. Short circuits and other abnormal conditions often occur on power system. The heavy current associated with short circuits is likely to cause damage to equipment, if suitable protec...

We use a single example to explain (1), the Likelihood Principle, (2) Bayesian statistics, and (3) why classical statistics cannot be used to compare hypotheses. 1. The Slater School The example and quotes used in this paper come from Annals of Radiation: The Cancer at Slater School by Paul Brodeur in The New Yorker of Dec. 7, 1992. We use the example only to make a point, not a serious analysi...