The Mechanism Of Transmission Line Galloping And Prevention Measures

Safe and reliable operation of the power grid is an important index to measure the level of service of electric power enterprise, is also the prerequisite and basis for enterprise development. The reliability of power grid operation is often affected by the natural environment. In recent years, the wire caused by snow disaster the galloping phenomenon frequently, many areas of the power grid suffered, and some even paralyzed. How to improve the power grid against against snow disaster and emergency ability has become an important research topic of power enterprises, power departments and experts and scholars to carry out the study of test further for this task. At the beginning of2010, Shengli Oilfield Power Grid has undergone two large-scale snowstorm and the ice disaster, seriously affected the normal power supply load of the oil well, oil production has suffered huge losses, the grid anti-galloping governance work has become important and urgent.At first, this paper enumerates the conductor wave happened in recent years caused by large area power grid accident, introduce the research status at home and abroad about wire dancing and dancing main measure for now. Expounds the concept and type of vibration, analysis the cause of the principles and characteristics of the transmission wire vibration. From the principle of dancing, dancing modeling analysis on introduction of the current international mainstream theory of conductor is dancing. According to the research purpose, object and requirements of different analysis and set up wire dancing single degree of freedom and three degrees of freedom mathematical model, and carries on the mathematical deduction.Estuary power supply company of shengli oilfield in2010two line dancing during the disaster weather conditions and meteorological factors of collection and sorting, analysis of three elements:from dancing dancing of inevitability. According to shengli oilfield power management corporation’s line dancing ideas and principles of management, estuary determine prevent dance transformation circuit power supply company, according to different voltage grade, the different sections to take the corresponding prevention strategies. Alternative to the variety of the dance prevention device, this paper compares and analyzes the advantages and disadvantages of application cases, choosing the appropriate prevention device to project implementation. From the selection of dance device installation, reconstruction of lever type, hardware and so on, this article focuses on estuarine power supply company was introduced in detail and dance governance work condition, and early stage effect.According to the power grid planning and design, maintenance management and disaster emergency repair work,the paper puts forward prevent dance governance other comprehensive measures. Analyzes the problems in the power grid planning and design phase, and proposes the corresponding countermeasure, expounded on overhead transmission lines against ice the latest design standards. Wires are introduced the related principle of on-line monitoring system, research situation and application of new anti taking material case. Disaster relief emergency repair phase in power grid, is proposed to establish the dance emergency handling system related content, and details the current commonly used measures of melting ice and de-icing technology. Put forward further rationalization proposal for estuary grid dance governance prevention work,better service operation safety reliability for Shengli Oilfield Power Grid.