What is the difference between transmission line and tie line?

Question

its from power system operation.

Answer 1

Transmission Line is to Transmit power from one source to another.(sending End and Receiving End)

Tie Line is a kind of Back to Back transmission called sychronization.(now a days most popular synchronization is by means of HVDC)

The Only main Difference,

The Power flow in a Transmission is fixed (ie) from sending end (source) to Receiving End (load)

The Power flow in a Tie line will flow in both the direction since both the sources are synchronized.

Answer 2

A tie line is a

#  a direct telephone line between extensions in two or more PBX systems

#  a line used to connect one electric power or transportation system with another

a transmission line is a more general term which is used to represent any medium which transfers energy from one point to another....

Answer 3

tie line is a connection point between two or more power plants or simply a power grid while a transmission line is a high voltage line which tranfers electrical power from the power generating plants to substations.

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