شبیه سازی انواع نوسانات جهشی هادیهای منفرد و برآورد حداکثر دامنه آنها
نویسنده
چکیده
واژگان کلیدی: گالوپینگ- خطوط انتقال هوایی – هادیهای منفرد- مدلسازی
کلیدواژهها
عنوان مقاله [English]
Simulation of Single Conductors Galloping Oscillations and Estimation of their Maximum Amplitudes
نویسنده [English]
- A. Gholami and M. Mirzai
Overhead transmission lines are influenced by different factors which are mostly electrical and mechanical. These factors can cause problems for lines, distortions in network and outage of line. In designing transmission lines mechanical properties are evaluated after selecting a suitable conductor and clearance with regard to electrical properties. In lines designing, an important mechanical parameter for estimating of phase distance is oscillations. Strong wind or ice fall from conductor surfaces or simultaneous presence of ice and wind may cause different oscillations. These oscillations are classified to aeoliane, galloping, and swing. Aeoliane is of high frequency (5-100Hz) and low amplitude (about a few centimeters), galloping is of low frequency (0.1 to 0.3Hz) and high amplitude (about of span sagging), also swing is of horizontal oscillation. In this paper, the mechanism of conductor galloping oscillation and its different types are described. Also these oscillations are simulated on the typical span by personal computer.
Keywords: Galloping, Overhead transmission lines, Single conductors, Modeling
کلیدواژهها [English]
- Galloping
- Overhead transmission lines
- Single conductors
- modeling
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