Abstract:
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Larger percentages of wind power penetration
translate to more demanding requirements from grid codes.
Recently, voltage support at the point of connection has been
introduced by several grid codes from around the world, thus,
making it important to analyze this control when applied to wind
power plants.
This paper addresses the analysis of two different voltage
control strategies for a wind power plant, i.e. decentralized and
centralized voltage control schemes.
The analysis has been performed using the equivalent and
simplified transfer functions of the system. Using this
representation, it is possible to investigate the influence of the
plant control gain, short circuit ratio, and time delays on the
system stability, as well as the fulfillment of the design
requirements. |