Evaluation of the Reactive Power Support Capability and Associated Technical Costs of Photovoltaic Farms' Operation

Autor(es)

Lourenco, Luis F. N. ^{[1, 2]} ; Monaro, Renato M. ^[1] ; Salles, Mauricio B. C. ^[1] ; Cardoso, Jose R. ^[1] ; Queval, Loic ^[3]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Escola Politecn, Lab Adv Elect Grids LGRID, BR-05508010 Sao Paulo - Brazil

^[2] Av Prof Luciano Gualberto 158, BR-05508900 Butanta, SP - Brazil

^[3] Sorbonne Univ, Univ Paris Saclay, Univ Paris Sud, CNRS, Cent Supelec, Grp Elect Engn Paris GeePs, UMR, 3 & 11 Rue Joliot Curie, F-91192 Gif Sur Yvette - France

• Tipo de documento: Artigo Científico
• Fonte: ENERGIES; v. 11, n. 6 JUN 2018.
• Citações Web of Science: 1

Resumo

The share of photovoltaic (PV) farms is increasing in the energy mix as power systems move away from conventional carbon-emitting sources. PV farms are equipped with an expensive power converter, which is, most of the time, used well bellow its rated capacity. This has led to proposals to use it to provide reactive power support to the grid. In this framework, this work presents a step-by-step methodology to obtain the reactive power support capability map and the associated technical costs of single- and two-stage PV farms during daytime operation. Results show that the use of two-stage PV farms can expand the reactive power support capability for low irradiance values in comparison to single-stage ones. Besides, despite losses being higher for two-stage PV farms, the technical cost in providing reactive power support is similar for both systems. Based on the obtained maps, it is demonstrated how the profits of a PV farm can be evaluated for the current ancillary services policy in Brazil. The proposed method is of interest to PV farm owners and grid operators to estimate the cost of providing reactive power support and to evaluate the economic feasibility in offering this ancillary service. (AU)

• Processo FAPESP: 14/05261-0 - Integração de energia eólica intermitente em sistemas de potência utilizando sistemas de armazenamento em baterias
• Beneficiário: Mauricio Barbosa de Camargo Salles
• Modalidade de apoio: Bolsas no Exterior - Pesquisa