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Hello, greetings, welcome back to
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our online electricity teacher channel. This time
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we will discuss electricity.
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Where does electricity come from?
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Or maybe some of you are
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wondering how electricity is
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it can reach our homes. Okay,
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as we know, electrical energy in
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this day and age is one of the
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most needed energies by
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Without electricity, have you ever
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imagined what the world would be like without electricity?
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Without electricity, the world would be dark. The lights would
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electronic devices wouldn't function
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completely. Wow, electricity is so important
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for our lives. This time we will
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discuss how electricity is
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can reach our homes. Listen to
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this material until it's finished. In general, there are three
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processes that must be carried out so that we
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can utilize electrical energy in
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our homes. The first is the process of
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generating electrical energy. Electricity is
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electrical energy generating centers such as
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steam power plants, hydroelectric power plants, gas power plants,
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diesel power, geothermal power,
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wind power, and other power plants.
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There is a coal-fired power plant (PLTU) where coal
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is used to burn the water
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produce high-pressure steam.
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This high-pressure steam is used to
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rotate the turbine angles and
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this rotation will later be used
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to rotating the generator shaft, in
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this generator, the electricity will be
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distributed, usually with a voltage
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The second stage of the electric power transmission system is the
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voltage generated by the generator
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being transmitted. It will be
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increased to a High Voltage
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150,000 volts or an extra high voltage
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500,000 volts. The voltage of 150,000
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volts will be transmitted using
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high voltage overhead lines or
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high voltage cable lines, while the
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500,000 volts will be transmitted using
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extra high voltage overhead lines
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or extra high voltage cable lines.
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Why should the voltage be increased?
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This aims to reduce losses
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or voltage noses in the
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electric power transmission system. By
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increasing the voltage, of course, with the
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power generated by the generator,
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the current will decrease so that the cross-sectional area of
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the cable needed in the
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electric power transmission process will also
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be smaller. This can be
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proven by the following formula. The
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electricity distribution process
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transmitted at the fork is reduced in
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step-down transformer.
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Then the electricity is distributed in
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medium voltage channels.
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On this channel, there are
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industrial customers who use a voltage of 20 kV
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for the next customer, namely
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commercial customers or later there will be
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households or industries
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later. the voltage will be reduced
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380 volts or 3 phase voltage from the
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one of the phases will be taken and distributed
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to household customers
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with a voltage of 220 Volts from this
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KWH meter will be installed from the KWH meter,
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we will use the energy to
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utilize electrical loads, both
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electrical and electronic,
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and how the electricity is
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built, given until it is
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distributed to our homes,
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I hope the video was useful,
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see you in the next lesson,
