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Study Tools for Series Compensated Networks

Electricity '95 (1995 : Vancouver, B.C.)

出版	Canadian Electrical Assn, Engineering & Operating Division, Power System Planning & Operation Section, 1995
URL	http://books.google.com.hk/books?id=PqxAjwEACAAJ&hl=&source=gbs_api

註釋The presence of nonlinear varistors in series compensated networks creates a major limitation in the traditional steady-state network analysis algorithms. A short-circuit analysis program is based on the assumption of completely linear fundamental frequency sequence networks and cannot account for the nonlinear conduction of the varistor. The first part of this paper reviews the development of a new fundamental frequency model for the series compensator and its incorporation in the Hydro-Quebec short-circuit analysis program for balanced and unbalanced faults. Another approach for short-circuit calculations is to use the EMTP program. The second part of the paper proposes a new varistor modelling technique that will allow the EMTP steady-state module to calculate the exact harmonic steady state of a network in a faulted condition. Hydro-Quebec's series compensated network is used as a test circuit for the proposed solution methods.