For decades, distribution systems were designed with rigid topologies and limited possibilities for change in configuration. Improvements achieved by the manufacturers in recent years have prompted the use of feeder reconfiguration to modify the topology of distribution networks. These improvements include remotely controlled switches and breakers for pole installation, numerical protection, and appropriate communication systems Prior to determining the location of switches to allow changes in configuration, it is highly recommended to find the best topology for a distribution system. Under normal operating conditions, feeder reconfiguration aims for a more efficient operating condition of the network. Under faulty conditions, feeder reconfiguration aims to restore the service to the maximum number of users in the shortest time.

Chapter Contents:

• 6.1 Optimal topology
• 6.2 Location of switches controlled remotely
• 6.2.1 Considerations to increase flexibility
• 6.2.2 Considerations to increase flexibility
• 6.3 Feeder reconfiguration for improving operating conditions
• 6.4 Feeder reconfiguration for service restoration
• 6.4.1 Fault location, isolation, and service restoration (FLISR)
• 6.4.2 Manual restoration vs. FLISR
• 6.4.3 Restrictions on restoration
• 6.4.4 FLISR central intelligence
• 6.4.5 FLISR distributed intelligence
• 6.4.6 FLISR local intelligence

Inspec keywords: power distribution protection; power system restoration; switchgear protection; poles and towers; circuit breakers

Other keywords: pole installation; remotely controlled switche; numerical protection; breaker; feeder reconfiguration; communication system; distribution network topology system

Subjects: Power line supports, insulators and connectors; Distribution networks; Switchgear; Power system management, operation and economics; Power system protection