Protection planning in transmission networks

The protection of transmission networks is discussed. Algorithms and tools which are useful both to support the activity of network planners and to build an automatic network protection system are presented. A definition of general and constrained routing and protection problems in a transmission network is given. Protection planning tools, their functions,and implementation are discussed. An algorithm for multiconstrained routing and protection problems is introduced. The concept of the automatic network protection system is given, and its main features are described. The results of a protection study carried out using the described algorithms are presented.<>