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In general, it is cheaper to transport power long distances at higher voltage levels. Do not take this as a rule as always being cheaper, otherwise you would have a 500kV line into your home.
The resistance in the power company's lines is not zero. There is always going to be some loss in quality whenever energy is transferred. Thus, when electricity is transferred, the power dissipated by the lines, even lines with a REALLY small resistance, like 1 micro-ohm per mile, adds up when one counts the millions of linear miles across which electricity is transmitted. The power dissipated can be calculated with the formula, P= VI, which through Ohm's law becomes P = (I^2) x R, where P = Power dissipated, V = voltage, I= current, and R= resistance. Thus, using the same resistance wire and the same power source, a higher voltage will have a lower current and less power will be dissipated as heat.
It is not cheaper to transport electric power at high voltages. What we are looking for is the smallest amount of loss during that transfer. The higher the voltage the lower the percentage of loss for a given diameter of wire. The costs associated with stations to step up and down power and to maintain these stations is very high. What the goal is here though is making as much power as possible reach our final destination. This is also why we use aluminum wire for transfer rather then copper. It is all about reduced loss, cost is a secondary concern.
What else can I help you with?
Why 22kv 11kv 33kv 132kv 220 kv are standard transmission voltages in transmission lines why not 20kv 10kv etc?
Its just a matter of standard. In my area, for instance, we use 13.2 KV for distribution lines, and 69 KV / 138 KV for transmission lines.
Why are power lines run at high voltages?
Power lines run at high voltages to overcome line loss.
How does electricity get to a plug?
The electricity is produced by large generators in a power plant.Transformers in the power plant yard step up the voltage to more than half a million volts used by the power transmission lines.Power transmission lines carry the electricity over long distances between the power plants and cities.Transformers in a switching yard step the voltage down to 1000 to 5000 volts used by power distribution lines.Power distribution lines carry the electricity short distances between the switching yard and the customer locations.Service drop transformers on the pole or underground step the voltage down to the voltage needed by the customer (e.g. 220 volts center taped for household, 240 volt 3 phase for commercial, 480 volt 3 phase for industrial).Service drop lines carry the electricity from the service drop transformer to the customer's electric meter.Internal main wiring carries the electricity from the electric meter to the breaker box.Wires from the breakers in the breaker box to outlets carry the electricity to the outlet sockets.When you put a plug in an outlet socket, the plug gets electricity.
What other equipment is involved in getting electricity to were it can be used bt people?
In addition to power plants, various equipment is essential for delivering electricity to consumers. Transmission lines carry high-voltage electricity over long distances, while substations step down the voltage for local distribution. Distribution lines then deliver the electricity to homes and businesses. Transformers also play a critical role in adjusting voltage levels throughout the process to ensure safe and efficient delivery.
How are step up transformers used in the transmission of electric energy?
Step-up Transformers used in the transmission of electrical energy increase the voltage going over Transmission Lines (over 100,000 Volts). For a given amount of POWER to be Transmitted, the higher the Voltage, the LOWER the CURRENT. This reduces the amount of Power LOST to the Resistance of the Transmission Lines. Power Lost is calculated by the Formula: POWER Lost = I2 x R, where I=Current and R=Resistance So, the lower the Current (I), the lower the transmission line losses. At the end of the Transmission Path the Voltage is "Stepped Down" to a value usable for the Customer, usually (220 volts for Residential use in the USA).
What are electrical transmission towers for?
Electrical transmission towers are meant to hold the power lines and to carry electricity.
How does the power station deliver electricity to houses?
The power station delivers electricity to houses through a network of power lines and transformers. The electricity is transmitted at high voltages over long distances through transmission lines, which are then stepped down to lower voltages by transformers before being distributed to individual homes through power lines.
What power lines send electricity over a nationwide network?
High-voltage transmission lines, typically operating at voltages of 100,000 volts or more, are used to send electricity over a nationwide network. These lines are part of the grid system that helps to distribute electricity across long distances efficiently and reliably.
What are the voltages in secondary transmission electric lines?
A: Those voltages are called distribution voltages to differentiate from transmission voltages. And that varies from state to state and locals . Usually around 10kv to 20 kv
Why are power lines high voltage and what are the advantages of transmitting electricity at high voltages?
Power lines are high voltage to reduce energy loss during transmission. Transmitting electricity at high voltages allows for more efficient long-distance transmission, reduces the amount of current needed, and minimizes heat loss, resulting in cost savings and increased reliability of the power grid.
Why is electricity in power stations generated at 25000 v?
Electricity is generated at high voltages, such as 25,000 V, because it reduces the loss of energy during transmission over long distances. Higher voltages mean lower current, which results in reduced heat losses in the transmission lines. This allows more efficient and cost-effective distribution of electricity to homes and businesses.
What is the word which means 'conductor carrying electricity over large distance with minimum losses' - clue it wl have a 'miss' syllable in it?
Transmission lines are used to carry electricity.
Electricity travels through tansmission lines.metal towers are called...?
Metal towers that carry electricity transmission lines are called transmission towers or power line towers. These towers support the electrical conductors that transmit electricity over long distances.
What are some properties of current electricity?
transmission lines
What supplies electricity?
HT is High Tension - usually voltages in excess of 1kV in electronics, but in Transmission Lines it could be much higher - perhaps over 25kV.It loosely signifies that there may be an unexpected danger in the apparatus.
High tension lines and low tension lines?
High tension lines are used to transmit electricity over long distances at high voltages, typically above 69 kilovolts, to reduce power loss. Low tension lines distribute electricity to homes and businesses at lower voltages, typically below 1 kilovolt, for safe use by consumers. High tension lines are essential for transmitting bulk electricity efficiently, while low tension lines deliver electricity to end users.
Why are transformers used for transmission of electricity into your home?
The voltage provided by power company are higher what your home uses so transformers step down the voltage for your house. Higher voltages in your home would cause a potential safety hazard. The higher voltages on transmission lines are used to cope with voltage drops over long distances.
