Title :
An energy approach to analysis of interarea oscillations in power systems
Author :
Jing, C. ; McCalley, James D. ; Kommareddy, M.
Author_Institution :
Siemens Empros Power Syst. Control, Plymouth, MN, USA
fDate :
5/1/1996 12:00:00 AM
Abstract :
In this paper, an energy approach to analysis of interarea oscillations (IAO) in power systems has been developed. IAO is characterized as oscillatory behavior, following a disturbance, of the rotor motion for two or more generator groups such that there is a periodic interchange of energy between them. By comparing the phase of the coefficient of the dominant energy mode in the kinetic energy for each generator, we identify the groups for which there are periodic interchanges of energy. The location of these groups in the system provides insight regarding transmission lines over which the energy interchange is taking place. Numerical results are obtained using a test system similar in structure and characteristics to that of the WSCC system in North America. Time domain simulation indicates installation of thyristor controlled series capacitors in key transmission lines identified using the results of the energy analysis provides an effective control for damping IAO
Keywords :
circuit oscillations; electrical faults; machine theory; power system analysis computing; power system interconnection; rotors; time-domain analysis; computer simulation; disturbance; dominant energy mode coefficient; energy approach; generator groups; interarea oscillations analysis; kinetic energy; oscillatory behavior; periodic energy interchange; power systems; rotor motion; thyristor controlled series capacitors; time-domain simulation; transmission lines; Analytical models; Character generation; Kinetic energy; North America; Power system analysis computing; Power transmission lines; Rotors; System testing; Thyristors; Time domain analysis;
Journal_Title :
Power Systems, IEEE Transactions on
