Abstract
The purpose of this study is to conduct an economic evaluation of a photovoltaic-energy storage system (PV–ESS system) based on the power generation performance data of photovoltaic operations in Korea, and to calculate the optimal capacity of the energy storage system. In this study, PV systems in Jeju-do and Gyeongsangnam-do were targeted, PV systems in this area were assumed to be installed on a general site, and the research was conducted by applying weights based on the facility’s capacity. All the analyses were conducted using the actual amount of Korea power exchange (KPX) transactions of PV systems in 2019. In order to calculate the optimal capacity of the power conditioning system (PCS) and the battery energy storage system (BESS) according to global horizontal irradiation (GHI), PV systems with a minimum/maximum/central value were selected by comparing the solar radiation before the horizontal plane for three years (2017–2019) in the location where the PV systems was installed. As a result of the analysis, in Jeju-do, if the renewable energy certificate(REC) weight decreased to 3.4 when there was no change in the cost of installing a BESS and a PCS, it was more economical to link to the BESS than the operation of the PV system alone. In Gyeongsangnam-do, it was revealed that if the REC weight was reduced to 3.4, it was more likely to link to the BESS than the operation of the PV system alone.
Highlights
A PV system installed on Jeju Island in Korea was targeted, and it was that the system installed on a general and weighted accordingaccording to the facility’s assumed that thewas system was installed on asite general site and weighted to the assumed that the system was installed on a general site and weighted according to the capacity. capacity
To calculate the optimal capacity of the power conditioning system (PCS) and the battery energy storage system (BESS) according to global horizontal irradiation (GHI), the used
The economic feasibility of the PV–energy storage system (ESS) system was evaluated based on the performance data of the power generation amount of solar power generation (PV)
Summary
The response to climate change is a problem that the world must consider together for sustainability, as it has been selected as one of the 17 UN-SDGs Climate change is intensifying with global economic growth. Korea is emitting a considerable amount of greenhouse gases in the process of achieving rapid economic growth as a developing country. Starting with the 21st Conference of the Parties (COP 21), which was held at the end of 2015, Korea proposed a goal of reducing 37%. Of greenhouse gases compared to business as usual (BAU) by 2030. In 2020, the National Demarcated Contribution (NDC) aimed at a 24.4% reduction compared to
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