Interlocking of substation in power system

Interlocking system should be provided to maintan proper electrical operation in case of circuit loss or other switching change
Interlocking provissions should be known so as to eliminate any danger from electrical feed back from another source such as possible paralliling of two or more unsyschronised sources or other unsafe operation
There ara many types of interlocking
a - Mechanical interlocking
b - Electrical interlocking
c - Penumatic interlocking
d - Electromechnical interlocking
e - Electronic interlocking
f - Computer based interlocking system

thanks man

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Computer based interlocking system

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