Journal
IEEE TRANSACTIONS ON POWER DELIVERY
Volume 25, Issue 3, Pages 1888-1898Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRD.2010.2043547
Keywords
Harmonic analysis; Newton-Raphson method; nonlinear systems; power electronics; power-flow analysis; time-domain analysis
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Steady-state simulation plays a vital role in power system analysis and design. Over the past 25 plus years, various steady-state methods have been proposed. Most of these methods only deal with how to obtain steady-state waveforms of a system in an efficient manner. Only a few of them also take power-flow constraints into account. The majority of these power-flow methods are implemented in the frequency domain, which inevitably suffers from harmonic truncation errors. Moreover, the problem of model incompatibility will rise when they are used for the steady-state initialization of a time-domain electromagnetic transient (EMT) program. This paper presents a harmonic power-flow method, which is implemented entirely in the time domain. The proposed method essentially extends a time-domain steady-state method, called shooting method to include the power-flow constraints and to account for aggregate loads in the power-flow calculations.
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