4.6 Article

Proposal for an aggregated solar PV power plant simulation model for grid code compliance

Journal

ELECTRIC POWER SYSTEMS RESEARCH
Volume 213, Issue -, Pages -

Publisher

ELSEVIER SCIENCE SA
DOI: 10.1016/j.epsr.2022.108676

Keywords

Grid code; Solar PV power; Simulation model; Spanish NTS

Funding

  1. Council of Communities of Castilla-La Mancha (Junta de Comunidades de Castilla-La Mancha, JCCM) [SBPLY/19/180501/000287]
  2. State Research Agency (Agencia Estatal de Investigacion, AEI)
  3. European Regional Development Fund (Fondo Europeo de Desarrollo Regional, FEDER) [ENE 2017-83860-R]
  4. Spanish university system - European Union Recovery Instrument NextGenerationEU
  5. University of Castilla-La Mancha

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This study proposes an innovative simulation model to accelerate the commissioning process of new solar PV power plants and demonstrates its accuracy and usefulness. It has also led to the revision of the Spanish grid code and could serve as a basis for other countries to adopt similar models for integrating PV power into power grids.
Renewable energy and, in particular, solar PV power, will play a crucial role in achieving net-zero emissions scenarios over the coming decades. Increasing the share of renewables in countries' energy mixes is therefore a major challenge that must be urgently addressed. Within this context, the present work proposes an innovative tool that may accelerate the commissioning process of new solar PV power plants, in the form of an aggregated simulation model to assess a power plant's responses under the technical requirements established in the Spanish grid code. Our analyses, based on the comparison of the proposed model with a detailed model-both representing the same installation, show, from a quantitative and qualitative viewpoint, the accuracy and usefulness of the dynamic simulation model proposed. The aggregated model is shown to be ten times faster than the detailed equivalent, while the errors encountered in the simulation responses of both models are below 0.1% in all cases. It must also be noted that the present paper has allowed for the introduction, in the most recent version of the Spanish grid code and following approval of the Spanish Transmission System Operator (TSO), Red Electrica de Espana (REE), of this new and advantageous PV power plant model. Finally, it is worth mentioning that this study could form the basis for encouraging other countries to also adopt this model in their grid codes as a new tool to help integrate PV power into power grids.

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