The transport network is the a system composed of the elements necessary to bring up the points of use through large distances the energy generated in power stations. The volume of electricity produced must be processed, your stress level rising. This is considering that for a given transmit power level by raising the voltage decreases the intensity of electrical currents, reducing losses by Joule effect. Trucks are used with electrical substations called transformers. Thus, a transmission network usually operates with voltages of about 220 Kv and above, called high-voltage, 440 kV.
Much of the network include transmission lines. A line of electricity transmission or power line is the physical medium through which to perform the transmission of energy over long distances. Is composed of both conductive element, usually copper or aluminum, for their support elements, the pylons. The power lines are subject to traction caused by the combination of agents such as wind, temperature of the driver, air temperature, etc. The voltage and capacity of the transmission line affect the size of these major structures. The towers can be studs for small transmission lines up to 46 kV. Used wooden pole structures in the form of H, for lines 69 to 231 kV. Steel structures are used independent of simple circuit for lines of 161 kV or more. You can have transmission lines up to 1,000 kV.
The main environmental impact of transmission lines include the transmission system, the beaches of distribution substations and access or maintenance roads. The main structures of the transmission line is the line itself, conductors, towers and supports. [] The negative environmental impacts of transmission lines caused by construction, operation and maintenance thereof. By placing lines at low altitude or located near areas with human activities increases the risk of electrocution. Generally, standards reduce this risk. The towers and transmission lines can disrupt the flight path of aircraft near airports and endanger low-flying aircraft, especially those used for agricultural activities. []
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