In the current expansion cycle of the Brazilian electricity sector, a strong growth
of non-dispatchable renewable sources is expected, for example, wind and solar
energy. In this context, the concept of hybrid power plants (HPP) has emerged as an
alternative so that the risks of energy generation projects can be better managed, in
addition to providing more profitable alternatives in the development of projects of
this kind. The combination of different technologies has the potential to provide
synergistic effects in the development and operation of plants and, consequently, to
reduce expenses and costs. The aim of this work is to present a methodological
approach to evaluate a HPP composed of wind and solar photovoltaic technologies,
considering two of the main associated risk factors, that is, the randomness of the
project s generation and the price of energy in the short-term market. For the case
study considered, the application of the methodology was able to measure the
synergistic gain with the development of the hybrid arrangement. Cash flow analyzes
were performed on a monthly and hourly basis, whose results were similar for most of
the situations studied. Sensitivity analyzes were carried out on the Amount of Use of
the Transmission System (MUST) contracted, which indicated the feasibility of
contracting 30 percent to 40 percent less than what is currently mandatory in the Brazilian
electricity sector. These analyzes were followed by the dimensioning of how much of
its production the project doesn t inject into the basic network due to different values
of the MUST contracted.
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