Control house layout – 3
Cableways Cable routing can be accomplished by using any of several methods.…
Control house layout – 2
DC Equipment Substation DC equipment located in the control house normally consists…
Control house layout -1
Control and Relay protection Panels Most protection relaying, metering, and control equipment…
Control house at HV/EHV switchyards and substations (construction, layout and functions)
Control house Nowadays, the control house is one of the main parts…
Phase Comparison
Phase comparison relay systems monitor the current direction at each line terminal…
Underreaching Transfer Trip Schemes
Underreaching transfer trip schemes include two variations: direct underreach and permissive underreach. The…
Pilot schemes for transmission line protection
When do we use pilot schemes? Pilot schemes simultaneously measure and monitor…
Double Breaker–Double Bus
The double breaker-double bus configuration consists of two main buses, each normally…
Breaker-and-a-Half
The breaker-and-a-half configuration consists of two main buses, each normally energized. Electrically connected…


