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The transmission loss is the amount of power lost in the line, mainly in the resistance of the wire used, but also in leakage across the insulators especially in wet weather.
33 kV lines are usually balanced 3-phase 3-wire circuits, using aluminium stranded cables without any insulation covering them. The cables sometimes have steel central conductors for strength. A typical cable size (Lynx) has a 180 mm2 cross-section of aluminium strands and can carry about 450 amps, slightly less in the summer. The resistance is 0.153 ohms per kilometre so the loss per wire with maximum current is 30 kW from the I2R formula. With an average current of half that, the loss goes down by three-quarters.
Wiki User
∙ 10y ago
Wiki User
∙ 14y agoThe same as for all losses in power lines - > I^2 * R, where I is the current that is flowing through the conductor, and R is the resistance of the conductor.
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Why is the voltage drop large in a high voltage transmission line?
The length of the wire causes resistive load to be distributed along line. This accumulated resistance causes the voltage drop.AnswerThe voltage drop along a high-voltage transmission line isn't large in relation to the operating voltage of the line. One of the advantages (there are many) of using high voltages is that, for a given load, the line current is relatively low -so the voltage drop along the line is also relatively low.
What is a 132 kv substation?
132kV substation is part of transmission and distribution of power in which the transmission voltage is 132kV. The substation is for stepping down or stepping up of the voltages to the required voltage. the substation also serves as a place where the transmission lines can be isolated, controlled and monitored. The substation consists of different equipment that is used to regulate, monitor and distribute the required power.Another AnswerIn the UK, 132 kV voltages are considered to be the lowest transmission voltages. Other transmission voltages are 275 kV and 400 kV. A '132-kV substation' is normally one in which this voltage is stepped down to a primary distribution voltage, usually 33 kV but, sometimes, 66 kV. As the previous answer points out, substations contain transformers, switchgear, busbars, and protection equipment.
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!
Where in the is the step transformer in the national grid?
Step up transformers are used to boost the voltage up for long distance transmission. At the other end, step down transformer are used to bring the voltage back to a working voltage for distribution to homes and industries
What is a 132 KV line isolator?
An isolator (disconnector in US terminology) is a switch designed to isolate a section of line afterthat line has been de-energised using a circuit breaker, allowing maintenance work to be carried out on the de-energised section.It's function is to provide a visual break between an energised line and a section of de-energised line and, therefore, is usually one of a pair (one at opposite ends of the de-energised section).Isolators are generally not designed to break load currents (and definitly NOT fault currents!!), so the line must be de-energised using a circuit breaker before the isolator is opened, and the isolator must be closed before the circuit breaker is then used to reclose the line.
Why only 11kv is used in power systems transmission line?
It isn't. In the UK, transmission and distribution voltages are 400 kV, 275 kV, 132 kV, 66 kV, 33kV, and 11 kV.
How many inches in 132 mm?
132 mm = 5.2 inches. Direct Conversion Formula 132 mm* 1 in 25.4 mm = 5.196850394 in
What is the answer to find the length of the line segment joining 32 and 132?
|32 - 132| = |-100| = 100 |32 - 132| = |-100| = 100
The molecular mass of the compound is 132 amu What is molecular formula?
C6H12O3 is a molecular formula that contains 54.5% C, 9.1% H, and 36.4% O and has molar mass of 132 amu.
What integer on the number line is closest to -132.48?
-132
What is y equals 995x -132?
1127
Does Virginia have a ocean cost line?
Yes, 132 miles of it.
What is Dan Marino's win loss record?
132-81 was his regular season record
What is a 380 132 substations?
it means..it is stepping up the power of 132KV to 380KV on the transmission lines.
What is 33 plus 33 plus 33 plus 33?
132 because if you line them up on a pice of paper and you add down you will get 132
What are the standard voltages for transmission?
The standard voltage for transmission is about 115 to 1,200 kV (long-distance transmission). The extreme high voltages are measured more than 2,000 kV and it is exists between conductor and ground.Answer for UKThe standard transmission voltages in the UK are 400 kV and 275 kV. Primary distribution voltages are 132 kV and 33 kV, and secondary distribution voltages are 11 kV and 400 V. These are all line voltages -i.e. voltages measured between line conductors.
The molecular mass of the compound is 132 amu. What is the molecular formula?
This is impossible. In order to find this you must know the elements in the compound
