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Electrical
engineering
is
a
field
of
engineering
that
generally
deals
with
the
study and application of electricity, electronics and electromagnetism. The field first
became
an
identifiable
occupation
in
the
late
nineteenth
century
after
commercialization of the electric telegraph and electrical power supply. It now covers
a range of subtopics including power, electronics, control systems, signal processing
and telecommunications.
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Electrical engineering may include electronic engineering. Where a distinction is
made, usually outside of the United States, electrical engineering is considered to deal
with
the
problems
associated
with
large-scale
electrical
systems
such
as
power
transmission and motor control, whereas electronic engineering deals with the study
of
small-scale
electronic
systems
including
computers
and
integrated
circuits.
Alternatively,
electrical
engineers
are
usually
concerned
with
using
electricity
to
transmit
energy,
while
electronic
engineers
are
concerned
with
using
electricity
to
transmit information. More recently, the distinction has become blurred by the growth
of power electronics.
鐢垫皵宸ョ▼鍖呮嫭鐢靛瓙宸ョ▼銆傚叾涓尯鍒埗鎴愶紝閫氬父鍦ㄧ編鍥戒互澶栵紝鐢垫皵宸ョ▼琚涓?/p>
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鑰岀數瀛愬伐绋嬫秹鍙婂皬
鍨嬬殑鐢靛瓙绯荤粺鐨勭爺绌跺寘鎷绠楁満鍜岄泦鎴愮數璺�?/p>
姝ゅ锛?/p>
鐢垫皵宸ョ▼甯堥�氬父鍏冲績鐨勭敤鐢?/p>
鏉ヤ紶杈撹兘閲忥紝
鑰岀數瀛愬伐绋嬪笀鎵�鍏虫敞鐨勭敤鐢甸噺鏉ヤ紶閫掍俊鎭�?/p>
鏈�杩戯紝
杩欑鍖哄垎宸茬粡鍙?/p>
寰楁ā绯婁簡鐢靛姏鐢靛瓙鎶�鏈殑鍙戝睍銆?/p>
Power
engineering
deals
with
the
generation,
transmission
and
distribution
of
electricity
as
well
as
the
design
of
a
range
of
related
devices.
These
include
transformers, electric generators, electric motors, high voltage engineering and power
electronics. In many regions of the world, governments maintain an electrical network
called a power grid that connects a variety of generators together with users of their
energy. Users purchase electrical energy from the grid, avoiding the costly exercise of
having
to
generate
their
own.
Power
engineers
may
work
on
the
design
and
maintenance of the power grid as well as the power systems that connect to it. Such
systems
are
called
on-grid
power
systems
and
may
supply
the
grid
with
additional
power,
draw
power
from
the
grid
or
do
both.
Power
engineers
may
also
work
on
systems that do not connect to the grid, called
off-grid
power systems, which in some
cases are preferable to on-grid systems. The future includes Satellite controlled power
systems, with feedback in real time to prevent power surges and prevent blackouts.