SOFCトリプルコンバインドサイクルと蓄電池の連系による独立マイクログリッドの周波数制御

抄録

Although it can be expected to reduce the environmental load by constructing an independent microgrid which introduces a large amount of photovoltaic power generation (PV) with unstable output. However, it is difficult to normalize power quality. Therefore, the solid oxide fuel cell triple combined cycle (SOFC - TCC) and storage battery are connected to the independent microgrid with solar power generation and heat pump for a suppression of frequency fluctuation. The output of the SOFC - TCC and storage attery are cooperatively controlled. The output of the storage battery is adjusted by PWM(Pulse Width Modulation) control of the inverter, and the output of SOFC - TCC is adjusted by fuel flow rate control. In this paper, frequency analysis of independent microgrid is performed using numerical analysis software MATLAB / Simulink R2014a. In this analysis, the limit capacity of PV and the storage battery which can suppress the variation of frequency of independent microgrid within an allowable range was calculated.