• Active distribution networks planning with high penetration of wind power

      Mokryani, G; Hu, YF; Pillai, P; Rajamani, HS (Elsevier BV, 2016-12-05)
      © 2016 Elsevier Ltd In this paper, a stochastic method for active distribution networks planning within a distribution market environment considering multi-configuration of wind turbines is proposed. Multi-configuration multi-scenario market-based optimal power flow is used to maximize the social welfare considering uncertainties related to wind speed and load demand and different operational status of wind turbines (multiple-wind turbine configurations). Scenario-based approach is used to model the abovementioned uncertainties. The method evaluates the impact of multiple-wind turbine configurations and active network management schemes on the amount of wind power that can be injected into the grid, the distribution locational marginal prices throughout the network and on the social welfare. The effectiveness of the proposed method is demonstrated with 16-bus UK generic distribution system. It was shown that multi-wind turbine configurations under active network management schemes, including coordinated voltage control and adaptive power factor control, can increase the amount of wind power that can be injected into the grid; therefore, the distribution locational marginal prices reduce throughout the network significantly.
    • Evaluating critical success factors for implementing renewable energy strategies in the Dominican Republic

      Suresh, Subashini; Renukappa, Suresh; Donastorg, Angelines (Elsevier, 2019-12-12)
      Global awareness and commitment, in regards to climate change, access to water and renewable energy deployment has risen in the last decade. However, many countries are still locked in unsustainable practices, specifically in regards to energy, this results in damaging consequences not just for the country but the world. Case in point of the Dominican Republic (DR), an island with an immense renewable energy potential, a growing economy and the financial aid of many international entities. Regardless of all this, “the business as usual” decision for the energy strategies is based on fossil foil. As a result, thousands of people are still without energy, the infrastructure itself is unreliable, and the cost of fossil fuel is 6-8% of the country’s GDP. The country also suffers from blackouts, the expensive tariff and unstable energy grid. Therefore, this paper discusses and critically evaluates critical success factors (CSF) for implementing renewable energy strategies in the DR. For this purpose, an extensive literature review was done, along with 25 interviews with the key actors in the renewable energy market of the DR, that were analysed using content analysis and ISM method. These methods provided insight into 6 CSF. These CFS aid the stakeholder’s in the creation and growth of the RE market in the DR.
    • Technical potential of floating photovoltaic systems on artificial water bodies in Brazil

      Campos Lopes, Mariana Padilha; Nogueira, Tainan; Leandro Santos, Alberto José; Castelo Branco, David; Pouran, Hamid (Elsevier, 2021-09-30)
      Floating photovoltaic systems (FPVs) are an emerging technology where photovoltaic solar panels are placed on the water surface. They are cost-competitive compared to ground-mounted solar farms and provide some additional and unique properties including reduced evaporation of the water from the reservoir, mitigating algae growth; higher efficiency of electricity generation compared to common PV systems because of the cooling effects of water and preventing land-use conflicts. Despite the growing interest in this technology and the opportunities that it could create, there is no systematic assessment of the technical potential of FPVs in Brazil. This work is the first study on the technical potential of FPVs in artificial water bodies applied to Brazil at country and state levels. The country's potential for this purpose was determined based on two criteria: selecting only artificial/man-made water bodies and excluding protected areas. The QGIS software was used to locate water bodies and cross georeferenced meteorological data. The results show that even if FPVs cover only 1% of the identified suitable areas this technology can produce energy equivalent to almost 12.5% of the current national electricity generation and correspond to approximately 16% of Brazil's electricity consumption.