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What are the properties of conductor used for transmission of electrical power?
Wiki User
∙ 9y ago
The main property is that it should be a good conductor, i.e. it should have good conductivity (low resistivity). Secondary considerations are mechanical strength under tension, ductility and the availability of abundant ore deposits. On all counts copper wins, with aluminium a second choice, usually for overhead cables.
Wiki User
∙ 9y ago
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Why is 3 phase power advantageous in higher voltage applications?
The 3 phase electric power is very common way of electric power transmission. Three circuit conductors carry three alternating currents the first conductor as reference the other currents are delayed in time for 1/3 and 2/3 of the cycle of the electrical currents.
What is a system that links electricity produced in power stations to deliver it to where it is needed?
Power Systems or Transmission & Distribution
Why you go for multi-conductor system in power transmission?
All a.c. transmission systems are three-phase systems, which comprise three line conductors which are suspended from towers. Each 'line' is generally made up of a number of 'bundled' conductors -according to the transmission voltage- to reduce the electrical stress. Many transmission towers carry two separate three-phase circuits, one on each side of the tower.
If an electrical current passes through a conductor what two things are generated?
If an electrical current passes through a conductor, there is an induced voltage (because no conductor has perfectly zero ohms), resulting in power dissipation, and there is a magnetic field, which can interact with other conductors in the vicinity of the first.
Why do power transmission lines not have neutral conductor?
No neutral is necessary, because the transmission line's line currents are roughly balanced and, so, the phasor sum of those currents will be relatively insignificant, rendering the need for a neutral conductor to be an unnecessary expense. In practise, for most transmission towers, each of the three 'lines' comprises not just a single conductor but, rather, a number of conductors which are bundled together in order to reduce electric stress surrounding the line. The number of conductors per bundle increases with transmission voltages. In the UK, for example, 400-kV transmission lines normally comprise bundles of four conductors, whereas 275-kV transmission lines normally comprise bundles of two, and 132-kV lines just one. Running along the top of transmission towers is an earthed conductor, called a 'guard conductor', whose function is to protect the lines from lightning strikes during electrical storms. Many transmission towers also have two, separate, three-phase circuits -one circuit on each side of the tower. But, definitely, no neutral!
Why copper is used in electrical transmission line?
Copper is a good conductor and is fairly strong. It generally is not used in power transmission lines due to cost - generally aluminimum is used.
What is electrical power transmission?
Moving electrical power from generating point to use point.
What are electrical transmission towers for?
Electrical transmission towers are meant to hold the power lines and to carry electricity.
Why are electrical transmission towers so close to the street?
To support the power lines. A power line is connected from the electrical transmission tower to the transformer to help bring electricity to the generator.
What is an example of a conductor in a room?
The cord sending electrical power to a light bulb or a television is an example of a conductor of electricity in a room. A conductor of a choir or an orchestra is an example of a musical conductor in a room.
What does an electrical circuit need to provide the power?
An electrical circuit needs Voltage-electrical pressure pushing electrons, and Amprege-electron flow through a conductor. P=IxE (Power= Voltage x Amprege.
What does power loss in electrical transmission mean?
The term, 'power loss', describes the rate of energy losses caused by the load current in the transmission lines
What has very little resistance to electron flow?
superconductors
What has the author P H Brisbin written?
P H Brisbin has written: 'Development of Nb3Sn conductor for AC superconducting power transmission cables' -- subject(s): Electric power distribution, Power transmission
What are facts devices in electrical power system?
FACTS = "Flexible AC Transmission Systems".
Describe the transmission of electrical energy from a power station to the community?
+4n6!n4 +0 ..
Why energy is lost from power transmission cables?
Losses are mainly due to electrical resistance.
