Hybrid solar plant with synchronous power controllers contribution to power system stability
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Data publicació2017
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Abstract
The penetration of renewable power plants in the
global electricity mix is reaching significant levels, and power
system operators are adapting their grid codes, so that renewable
generators do not alter the operation of the grid, preventing the
introduction of additional disturbances and contributing to the
control of the power system. In this context, hybrid solar plants
arise as a tradeoff solution that combines the ability of solar
thermal energy plants to smooth the solar resource variations
and to generate a certain amount of power when there is no sun,
with cheaper and easier to build and control solar photovoltaics,
with the aim of providing grid-friendly, clean, renewable energy
at a minimum cost. This paper analyzes the impact that a hybrid
solar plant has on a power system when its PV conversion
system employs advanced controllers that further contribute to
a harmonious interaction between the solar resource and the
grid. The analysis compares the results obtained by the hybrid
plant in different operating conditions with the performance
of a purely solar thermal energy plant of a similar size, and
the results prove that the utilization of PV is beneficial for the
power system, increasing the damping of oscillations, mitigating
frequency excursions, and reducing the effort done by other
generating units in the system when severe disturbances take
place.
CitacióRemon, D., Mir, A., Martinez-Garcia, J., Escaño, J.M., Rodriguez, P. Hybrid solar plant with synchronous power controllers contribution to power system stability. A: IEEE Energy Conversion Congress and Exposition. "ECCE 2017: IEEE Energy Conversion Congress and Exposition : Cincinnati, USA: October 1-5, 2017". 2017, p. 4069-4076.
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