Power system protection
Power system protection is part of an electric power system. It protects an electrical network from faults by isolating the faulted parts from the healthy parts. This keeps the power system working as much as possible.
Protective devices
Power System Protection Media
Overlapping protection zones: single-line diagram depicts generators at the top connected to voltage transformers, (vertical) transmission lines and (horizontal) busbars. The switch symbols are protective relays. Zone boundaries are indicated by colored dashed lines
