Overhead lines are essential components of high voltage power systems worldwide. The performance of this network element is important for a save and reliable transmission of electrical energy. The load capability of a line is related basically to the line design itself and takes centre stage of the economic operation whereas the sag behaviour and the technical condition of the conductor and the...

This paper is introduced to be the obstacle recognition, path planning and oscillating control for an automobile crane system on-line. We studied the autonomous mobile overhead traveling crane so for. In particular, the research of obstacle recognition, path plan and oscillating control is carried out. For on-line obstacle recognition, the obstacle recognition system using the ultrasonic sensor...

Existing electric-field integral inversion methods have limited field application conditions, and they are difficult to arrange measurement points on high-span overhead lines. This paper proposes a non-intrusive voltage method for transmission lines based the near-end integration method. First, distribution under 10 kV is calculated by finite element simulation software. The of plumb line discr...

This paper presents applications of the excitation function on the prediction of the RadioInterference (RI) of overhead transmission line, due to corona effect. These applications are done under different weather conditions such as: heavy rain, wet conductor and fair weather. Also, this paper investigates the factors influencing the RI level namely; the height of conductors, phase spacing, numb...

Abstract Overhead conductors’ thermal and mechanical states are the critical factors to determine their safe operation have an impact on power flow calculation. The state parameters of overhead conductors change resistance line one hand through tensile action force other hand. closely related calculation system. Based two kinds influence mechanisms regional systems, this paper quantitatively an...

The paper outlines how lightning-induced voltages (LIV) in multi-conductor overhead lines can be calculated in MODELS in the ATP-EMTP. Lossy ground effects on the radial electrical field is taken into account by the CoorayRubinstein approximation, but the overhead line itself is assumed to be lossless. This is a reasonable assumption for line lengths up to 1-3 km, depending on the ground resist...

To avoid unnecessary accident and to insure that overhead transmission lines operate safely, on-line monitoring operation state and dynamic security evaluation are necessary. Dynamic Line Rating (DLR) system has been introduced in monitoring the real-time weather and line conditions. The conductor temperature in operation is affected by complex components. This paper analyzed the characteristic...

Deduplication is now widely accepted as an efficient technique for reducing storage costs at the expense of some processing overhead, being increasingly sought in primary storage systems [7, 8] and cloud computing infrastructures holding Virtual Machine (VM) volumes [2, 1, 5]. Besides a large number of duplicates that can be found across static VM images [3], dynamic general purpose data from V...

Electric power consumption, has been increasing uninterruptedly, being this increase specially accelerated in the last years. New power generators are been built, the installed power increases each year, thus it is necessary a way to transmit the bulk energy. Nowadays electric lines are saturated, they are reaching critical values of ampacity and sag. Therefore building new lines is necessary t...