کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
704482 1460888 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A frequency-domain equivalent-based approach to compute periodic steady-state of electrical networks
ترجمه فارسی عنوان
یک روش مبتنی بر معادله فرکانس دامنه برای محاسبه حالت ایستا دوره ای شبکه های الکتریکی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
چکیده انگلیسی


• Hybrid frequency/time domain method to solve electrical networks.
• The method includes harmonic and interharmonics frequency components.
• Computation time of proposed method smaller than Newton-based solution scheme.
• The proposed method can readily handle PV-buses, electronic devices and non linear loads.

An alternative hybrid time/frequency domain approach to compute the periodic steady-state of an electrical network is presented. The network under analysis can include a variety of linear and nonlinear components, e.g., PV-buses, nonlinear reactors, and electronic devices. In the proposed approach, the linear part of the network is modeled in the frequency-domain (FD) via an equivalent input-admittance and all nonlinear components but PV-buses are resolved in the time-domain (TD). The FD equivalent is interfaced to the nonlinear components via discrete Fourier transform (DFT) operations, accounting for harmonic and interharmonic frequencies. The interfacing voltage/current variables are solved through a global Gauss–Seidel procedure; PV-buses are solved via a local Newton-type iterative procedure. It is shown that the proposed approach achieves faster computations than traditional hybrid methods due to (i) the compact FD equivalent representation of the linear part of the network and (ii) the Gauss–Seidel iterative scheme that avoids calculation and inversions of Jacobians. A sample network is used to compare the proposed method with a Newton-type solution scheme; the resulting waveforms are also compared with those given by the PSCAD™/EMTDC™simulation software.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electric Power Systems Research - Volume 125, August 2015, Pages 100–108
نویسندگان
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