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OPTIMIZED PROTECTION COORDINATION OF ELECTRONIC-TRIP CIRCUIT BREAKER BY SHORT CIRCUIT CURRENT AVAILABILITY MONITORING
OPTIMIZED PROTECTION COORDINATION OF ELECTRONIC-TRIP CIRCUIT BREAKER BY SHORT CIRCUIT CURRENT AVAILABILITY MONITORING
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机译:通过短路电流电流可用性监测来优化电子三路断路器的保护配合
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摘要
Centralized coordination of setting and adjusting trip settings of electronic circuit breakers (104, 106, 108) in an electrical distribution system (100) by monitoring short circuit current availability (SCCA) and adjusting trip settings based on received SCCA estimates from SCCA monitoring devices (102) installed at main (A), feeder (B), and branch nodes of the distribution system (100). The SCCA monitoring devices (102) are capable of automatically estimating the SCCA in the circuit or node at which the SCCA device is installed and transmitting SCCA estimates to a controller, which uses the SCCA estimates to coordinate adjustments to trip settings for the various circuit breakers (104, 106, 108). Depending on the node position of the circuit breaker (104, 106, 108) and the corresponding SCCA at that node, the controller adjusts in real-time the short-circuit trip settings for the circuit breakers (104, 106, 108) so that they are below the SCCA value. Optional userinputted settings can affect the trip setting adjustments, such as transient loading conditions that can influence the SCCA estimates.
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