마이크로 그리드 등의 복합 발전 시스템에 있어서, 독립 운전에서 연계 운전으로 전환될 때에, 제어 방식의 변경을 할 필요가 없는 전력 변환 장치를 제공한다. 제1 주파수 지령값과 주파수 취득기(14)에서 취득된 주파수의 편차를 적분하여 제1 내부 상차각을 산출하는 제1 내부 상차각 연산부(60)와, 제1 무효 전력 지령값과 제1 측정기(34)에서 측정된 값에 따라 얻어지는 무효 전력의 편차를 비례 연산하고, 이에 기준 전압을 더하여 제1 내부 기전압 지령값을 산출하는 제1 내부 기전압 지령값 연산부(50)와, 제1 내부 상차각과, 제1 내부 기전압 지령값과, 전압 측정기(4)에서 측정된 전압으로부터 제1 전력 변환기(6)의 출력 전류 지령값을 산출하는 제1 전류 지령값 연산부(70)를 구비하며, 제1 전류 지령값 연산부(70)의 출력에 따라 제1 전력 변환기(6)를 제어한다.
A power converting apparatus, in which when a single-sustained operation is switched into a linkage operation in a combined power generation system such as a microgrid, a control system does not have to be changed, is provided. The apparatus includes a first internal phase difference angle calculator (60) for integrating a deviation between a first frequency command value and a frequency obtained by a frequency obtaining device (14) so as to calculate a first internal phase difference angle, a first internal electromotive voltage command value calculator (50) for proportioning and calculating a deviation between a first reactive power command value and a reactive power obtained based on the value measured by the first measuring device (3, 4), and adding a reference voltage to the deviation so as to calculate a first internal electromotive voltage command value, and a first current command value calculator (70) for calculating a command value of an output current from a first power converter (6) based on the first internal phase difference angle, the first internal electromotive voltage command value, and a voltage measured by the voltage measuring device (4). The apparatus controls the first power converter (6) based on an output from the first current command value calculator (70).
COMBINED POWER GENERATION SYSTEM EQUIPPED WITH POWER CONVERSION DEVICE
전력 변환 장치를 구비한 복합 발전 시스템
2017-01-24
Patent
Electronic Resource
Korean
IPC: | H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen |
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