제주지역 풍력발전단지의 에너지저장시스템 운영 및 수익증대 방안에 관한 연구

Abstract

This thesis proposes the method of the operation and revenue increasing of the energy storage system connected with the wind farm installed in Jeju island. These days, the remarkable wind farm as the most popular renewable resource has achieved increasingly development and growth. However, the stability of power grid will be decreased at the same time because the energy generated from the wind turbines could not be synchronized to peak load in grid. Due to the intermittent power generation of wind turbines, it needs the energy storage system to enhance the stability of power grid with the smart grid technology. In Korea, according to that a recent battery market has been slightly changed to low price, it has been promoted to construct the energy storage system connected with wind farm since 2015. The most issue to increase the construction of energy storage system connected with wind farm is the part of economic evaluation. But the actual operating data and the research with an economic point of view have not been achieved till now.  Therefore, I proposed the method to increase the economic revenue of the energy storage system connected with a wind farm located at sungsan region

1) A case of increasing the capacity of Power Conditioning System by additional investment. (2 MW to 3 MW)

2) A case of changing the setting value of charge and discharge. (200 kWh to 100 kWh)

3) A case of changing the time of charging. (Change the starting time to charge the energy storage system from completed discharging moment to midnight) 

As a result of three cases, the revenue of energy storage system connected wind farm has increased by around three percent. Despite the increase in revenue, additional studies on economics of the energy storage system connected with wind farm in Jeju compared with other places are required. In this paper, I suggest the predict models as the issues of revenue increase in terms of increasing capacity, changing the setting value of charge and changing the time of charging to increase the number of energy storage systems installed at wind farm in Jeju.