Transmission lines are affected by the natural environment for a long time, and bolts prone to frequent vibration, resulting in loosening or falling off. In this paper, loose mechanism of transmission line threaded connection is analysed, transverse vibration comparative test bolt locking method carried out. A new type nut has been developed, which good performance convenient installation. Acco...

this paper proposes a new method for transmission loss allocation. the share of each bus in the transmission line losses is determined using transmission line loss equations with respect to bus-injected currents. then, it is applied to the total network transmission lines. in the proposed method, comparing with other methods, a solution to remove the negative loss allocation has been introduced...

The reflection and transmission of thermoelastic plane waves at an imperfect boundary of two dissimilar fibre-reinforced transversely isotropic thermoelastic solid half-spaces under hydrostatic initial stress has been investigated. The appropriate boundary conditions are applied at the interface to obtain the reflection and transmission coefficients of various reflected and transmitted waves wi...

The problem of guided wave propagation in a wave guide with imperfectly reflecting boundaries arises in several applications, such as propagation in mine tunnels and in screened surface wave guides. In recent years, many studies have been carried out on the propagation characteristic of radio waves in tunnels in UHF band [1-2]. From the theoretical point of view, tunnels can be regarded as holl...

Abstract Bolts are widely used in transmission lines and key connecting parts of lines. Transmission have been affected by the natural environment for a long time, bolts prone to frequent vibration leading loosening or falling off. Bolt endangers safe stable operation This paper analyses mechanism line screw connection, carries out transverse contrast test common bolt anti-loosening measures, d...

An efficient iterative method is presented for the fast analysis of cylindrically conformal microstrip structures. Based on the transmission line modeling (TLM) method and the fast modal transform (FMT) theory, this technique accelerates the process of the calculation by introducing the concept of the transverse electromagnetic waves instead of the transverse fields considered in the traditiona...

A simple method for formofating the dyadic Green’s functions in the spectral domain is presented for generalized printed traaaroiasion fines wbieh contain severaf dielectric layers and conductors appearing at several dielectric interfaa+s. The method is based on the transverse equivalent tranamiwion line for a spectraf wave and on a simple coordinate transformation. Tfds formulation process is ...

The paper presents the results of electrostatic and electromagnetic field measurements produced under a 220-kV overhead transmission line. Two different sites along line are selected for tests, Simplified measuring technique is used performed at heights ranging from 1 m to 3 above ground surface, with transverse distances up 25 around centre Using image theory quasi-static approximation, corres...