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Incorporation of a Wind Generator Model into a Dynamic Power Flow Analysis

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Author(s): Angeles-Camacho C. | Bañuelos-Ruedas F.

Journal: Ingeniería Investigación y Tecnologia
ISSN 1405-7743

Volume: 12;
Issue: 3;
Start page: 311;
Date: 2011;
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Keywords: wind generation | power flows | penetration | dynamic stability

ABSTRACT
Wind energy is nowadays one of the most cost-effective and practical options for electric generation from renewable resources. However, increased penetration of wind generation causes the power networks to be more depend on, and vulnerable to, the varying wind speed. Modeling is a tool which can provide valuable information about the interaction between wind farms and the power network to which they are connected. This paper develops a realistic characterization of a wind generator. The wind generator model is incorporated into an algorithm to investigate its contribution to the stability of the power network in the time domain. The tool obtained is termed dynamic power flow. The wind generator model takes on account the wind speed and the reactive power consumption by induction generators. Dynamic power flow analysis is carried-out using real wind data at 10-minute time intervals collected for one meteorological station. The generation injected at one point into the network provides active power locally and is found to reduce global power losses. However, the power supplied is time-varying and causes fluctuations in voltage magnitude and power fl ows in transmission lines.
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