Conductors Type Selection Of X 500kV AC Transmission Line In Neimenggu Eastern Power Grid

Wires are the main components of transmission lines,which carry the power to transmit electricity.Conductor selection should not only consider the safe and reliable delivery of electricity,but also meet the requirements of environmental protection,finally also needs to be reasonable solution from technical and economic aspects.The selection of the conductor not only affects the initial construction cost of the line project,but also has a large effect on the maintenance cost of the later line.Therefore,it is very important to compare the type,cross section,and split type of the wire to get the optimal wire selection.Domestic and foreign research on conductor selection according to their own power engineering characteristics and actual needs,formulate the wires have different standard,current density,the conductors allow temperature,electromagnetic environment influence and so on all have their own rules;Combined with the practical requirements in construction may be different,in addition to the extensive use of steel core aluminum stranded wire,aluminium wire,steel reinforced high conductivity aluminum wire,low air pressure wire and other new conductor is gradually being developed and applied to specific projects.MengDong grid a 500 kv ac transmission line engineering case,according to the actual requirements and technical conditions,considering all kinds of wire lines of electrical properties,mechanical properties,the whole life cycle cost factors,such as fragmentation of wire type,the root number,total cross section selection,comprehensive economic current density,optimization choose appropriate conductor,finally it is concluded that more reasonable wiring scheme suited to the characteristics of the project.Based on a 500 kv ac transmission line conductor MengDong grid selection analysis,different types of wires with different performance,fine when use should be based on the specific characteristics of the project,select the corresponding wire,wire to exert the advantages,to ensure the safety of the project,achieve the goal of energy conservation and emissions reduction.In the future,how to reduce wastage and energy is the development direction and trend of the conductor.