에너지저장장치를 이용한 풍력발전 출력 제어 성능 평가

초록

In this paper, we describe construction of a wind stabilization demo-site and effects of output power controlof wind turbines for suppression of ramp rate using ESS (Energy Storage System). It is difficult to control the outputpower of distributed generator such as wind turbine which of variation is very large. If the large capacity wind farm beinterconnected into power system may cause blackout due to Power Quality. For these reasons, the internationalstandards such as Grid-Code is limited to less than 10 [%/min] of renewable energy ramp rate. The case of Korea,government actively conducts propagating large-scale renewable energy for green growth policy, to interconnecting morerenewable energy into power system is necessary for stabilization technology. For these reasons, the POSCO consortiumhas constructed a wind stabilization demo-site that is configured as 500 [kWh] battery energy storage systems canoutput up to 3 [C-Rate] and two wind turbines rated 750 [kW]. In POSCO consortium, which implements variousmethods stabilizing output power of wind turbine such as smoothing, section firming and ramp control, we derive theresults of long-term demonstration that can be controlled to satisfy to the international standard about ramp rate [%/kW]of wind turbine output power.

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