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Power System Analysis
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In this paper, the authors present a model for estimating the Impedance of Transmission Lines and the Capacitance of Transformer Lines in the presence of Symmetrical Faults.Abstract:
1 Basic Concepts 2 Transformers 3 The Synchronous Machine 4 Series Impedance of Transmission Lines 5 Capacitance of Transmission Lines 6 Current and Voltage Relations on a Transmission Line 7 The Admittance Model and Network Calculations 8 The Impedance Model and Network Calculations 9 Power Flow Solutions 10 Symmetrical Faults 11 Symmetrical Components and Sequence Networks 12 Unsymmetrical Faults 13 Economic Operation of Power Systems 14 Zbus Methods in Contingency Analysis 15 State Estimation of Power Systems 16 Power System Stabilityread more
Citations
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Grid Inertia and Frequency Control in Power Systems with High Penetration of Renewables
Pieter Tielens,Dirk Van Hertem +1 more
TL;DR: It is shown that by integrating renewables in the generation mix, the frequency support deteriorates, but through additional control, the frequencies can be improved and some recommendations for future research are given.
Posted Content
NESTA, The NICTA Energy System Test Case Archive
TL;DR: This report surveys all of the publicly available AC transmission system test cases, to the best of the authors' knowledge, and finds that many of the traditional test cases are missing key network operation constraints, such as line thermal limits and generator capability curves.
Journal ArticleDOI
Optimal Power Flow Subject to Security Constraints Solved With a Particle Swarm Optimizer
TL;DR: A novel approach to solve an optimal power flow problem with embedded security constraints (OPF-SC), represented by a mixture of continuous and discrete control variables, where the major aim is to minimize the total operating cost, taking into account both operating security constraints and system capacity requirements.
Journal ArticleDOI
Unbalanced Voltage Sag Ride-Through of a Doubly Fed Induction Generator Wind Turbine With Series Grid-Side Converter
TL;DR: In this article, the authors present the analysis and control design of a doubly fed induction generator (DFIG) wind turbine with a series grid-side converter for ride-through during unbalanced voltage sag events.
Posted Content
A survey on modeling of microgrids - from fundamental physics to phasors and voltage sources
Johannes Schiffer,Daniele Zonetti,Romeo Ortega,Aleksandar M. Stankovic,Tevfik Sezi,Jörg Raisch +5 more
TL;DR: In this paper, the authors present detailed dynamical models of the main microgrid components, starting from fundamental physics, and state the underlying assumptions which lead to the standard reduced model with inverters represented by controllable voltage sources, as well as static network and load representations, hence, providing a complete modular model derivation of a three-phase inverter-based microgrid.