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3 Phase Lab Report

Three-phase electric power is a common method for generating, transmitting, and distributing alternating current power around the world. It uses three conductors and is more economical than single-phase power for transmitting the same amount of power. Power plants generate 50Hz three-phase power that is stepped up to high voltages for transmission on large pylons to substations, then stepped down for distribution to heavy industrial users and homes. Three-phase power is advantageous for handling heavy loads but has disadvantages like high costs for insulation and inability to handle overloads.

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Sheikh Bajunaid
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1K views2 pages

3 Phase Lab Report

Three-phase electric power is a common method for generating, transmitting, and distributing alternating current power around the world. It uses three conductors and is more economical than single-phase power for transmitting the same amount of power. Power plants generate 50Hz three-phase power that is stepped up to high voltages for transmission on large pylons to substations, then stepped down for distribution to heavy industrial users and homes. Three-phase power is advantageous for handling heavy loads but has disadvantages like high costs for insulation and inability to handle overloads.

Uploaded by

Sheikh Bajunaid
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Discussion

Three-phase electric power is a common method of generating, transmitting, and


distributing alternating current electric power. It is a type of polyphase system and the
most common method of power transfer used by electrical grids worldwide. Large
motors and others heavy loads are also powered by it. Because it uses less conductor
material to transmit a given amount of electrical power, a three-wire three-phase circuit
is usually more economical than two wire single-phase circuit at the same line to
ground voltage.

The Figure 1 shown how generation, transmission, and distribution of electric


power systems. High transmission substations generate 50 Hz of electric
power through yellow, red, and blue wires that connect between power plants. The
electric power will then be risen to 500kV. Following that, it generates secondary high
transmission cables on the large pylon and reduces the voltage from 500kV to 33kV
to supply large industries. The connection of transmission cables on small pylons will
generate power for the primary distribution substation and step down from 33kV for
heavy industrial.

The three-phase electric has advantages and disadvantages. The advantages


of three-phase power are It can easily manage heavy loads and does not require any
motors. Next, it cannot handle overload, which is costly to repair, and it also has a high
cost of insulation because it is dependent on the voltage of the unit, whereas the size
of wire is depends on current.

Conclusion
From the experiment, we can learn about the pros and cons of three-phase
power. We can also learn about the components used in three-phase power supply.
We can see how three-phase electricity is better for heavy-duty appliances because it
provides stable power. Therefore, this laboratory work's objective was accomplished.
References
https://en.wikipedia.org/wiki/Three-phase_electric_power

https://anjungsainssmkss.wordpress.com/2011/07/19/electrical-power-transmission-
and-distribution-system/

https://www.electpower.com/advantages-and-disadvantages-of-3-phase-transformer/

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