A new component method is developed to solve unbalance problems in power systems by substituting θ = 45° in Park's Transformation. Interconnection of sequence components network to simulate various shunt and series faults are obtained. The interconnected networks are similar to those obtained by symmetrical component transformation without any phase shifters.
Multi-phase loads, employing more than three phases, specially in the form of inverter fed induction motor drives suited to high power and specialized applications, are receiving growing attention in the literature. This multi-phase source for such drive application may be derived from transformer connection (3 phase to 12 phase) or by DC link 12-phase inverters. These sources will face the problem of unbalance, harmonic distortion and poor power factor operation. In view of these developments, this paper deals with the supply side load balancing and power factor correction in such load circuits. The proposed compensation scheme uses the shunt current source compensation whose instantaneous values are determined by the instantaneous symmetrical component theory. The compensation scheme developed in the paper is based on principle reported and is tested for its validity on 12-phase (12-wire & 13wire) circuits through extensive simulations for unbalanced loading and phase outages. The simulation results of the compensation theory and the ideal compensator verify the compensation method.
Problems concerning power flow and stability, particularly the voltage stability are of vital importance at EHV and UHV level because of their sensitivity to real and reactive power changes. The problem has been studied to a considerable extent in case of three-phase systems; however the multi-phase (phase order more than three) systems have received little attention. The purpose of this paper is to investigate these aspects by extending the well established techniques of three-phase systems to multi-phase lines and construct performance characteristic curves related to power flow and voltage stability performance of such systems
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.