ENERGY STORAGE SYSTEM INCLUDING REUSED BATTERY AND OPERATING METHOD THEREOF

According to an embodiment of the present invention, an energy storage system comprises: a first battery; a first battery connection unit connecting the first battery and a main power conversion device; a second battery; a second battery connection unit connecting the second battery and the main pow...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KOO BONJUN, CHOI JINYOUNG
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION SYSTEMS FOR STORING ELECTRIC ENERGY
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Beschreibung
Zusammenfassung:	According to an embodiment of the present invention, an energy storage system comprises: a first battery; a first battery connection unit connecting the first battery and a main power conversion device; a second battery; a second battery connection unit connecting the second battery and the main power conversion device; a measuring unit that measures a frequency of power flow between the main power conversion device and a power system; and a control unit that determines an operating mode of the system according to the frequency measured by the measuring unit, controls the second battery connection unit according to a state of the first battery in each operating mode, and adjusts an output of the second battery. 본 발명의 실시예에 따른 에너지 저장 시스템은 제1 배터리; 상기 제1 배터리과 주전력변환 장치를 연결하는 제1 배터리 연결부; 제2 배터리; 상기 제2 배터리와 상기 주전력변환 장치를 연결하는 제2 배터리 연결부; 상기 주전력변환 장치 및 전력계통 사이의 전력 흐름의 주파수를 측정하는 측정부; 및 상기 측정부에 의해 측정된 주파수에 따라 시스템의 동작 모드를 결정하고, 각 동작 모드에서 상기 제1 배터리의 상태에 따라 상기 제2 배터리 연결부를 제어하고, 상기 제2 배터리의 출력을 조정하는 제어부를 포함할 수 있다.