1. Periodic steady-state solution of electric systems including UPFCs by extrapolation to the limit cycle
- Author
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Segundo, Juan and Medina, Aurelio
- Subjects
Electric controllers -- Design and construction ,Electronic control -- Design and construction ,Electromagnetism -- Research ,Numerical analysis -- Methods ,Electric power transmission -- Management ,Company business management ,Business ,Computers ,Electronics ,Electronics and electrical industries - Abstract
This paper details a technique in the time domain for the fast periodic steady-state solution of systems with unified power-flow controllers (UPFCs) incorporating three strategies for the practical representation of the UPFC commutation process. The computation of the periodic steady-state solution of power systems with UPFCs including the proposed UPFC control strategies is efficiently obtained by extrapolation to the limit cycle using a Newton method based on a numerical-differentiation procedure. The periodic steady-state solution is validated against the solution obtained with the electromagnetic transient program PSCAD/EMTDC and against an implementation with the power system blockset of SIMULINK. Index Terms--Commutation process, electromagnetic transient program, fast periodic steady state, limit cycle, Newton method, numerical differentiation, unified power-flow controllers (UPFCs).
- Published
- 2008