Title :
Wide-area protection against voltage collapse
Author :
Ingelsson, Bertil ; Lindstrom, Per-Olof ; Karlsson, Daniel ; Runvik, Goran ; Sjodin, Jan-Olov
Author_Institution :
Svenska Kraftnat, Sweden
fDate :
10/1/1997 12:00:00 AM
Abstract :
A wide-area protection system against long-term voltage collapse was designed, implemented, tested, modified, and commissioned. The system is based on the present SCADA system in southern Sweden, which has been complemented with input signals and equipment to execute action orders from the protection system. Bus voltages from the transmission system, reactive power output from generators connected to the transmission system, and current limiter information from main generators were used as input signals to the wide-area protection system. Actions from the protection system are shunt reactor disconnection, shunt capacitor connection, start of gas turbines, emergency power request from the HVDC connection to Germany, low priority load disconnection, and finally shedding of high priority load
Keywords :
SCADA systems; current limiters; load shedding; power system control; power system protection; power system stability; transmission networks; 400 kV; HVDC connection; SCADA system; Sweden; bus voltages; current limiter; emergency power request; gas turbine starting; generators; high priority load shedding; input signals; long-term voltage collapse protection; low priority load disconnection; reactive power output; shunt capacitor connection; shunt reactor disconnection; transmission system; wide-area protection system; Current limiters; Inductors; Power generation; Power system protection; Reactive power; SCADA systems; Shunt (electrical); Signal generators; System testing; Voltage;
Journal_Title :
Computer Applications in Power, IEEE
