Power system

The DC grid (GR1) has a bus line (BUS) connected to a power element (EL1), which is a power generation device, and power elements (EL2, EL3), which are a plurality of power devices. A plurality of power storage devices (BAT) capable of supplying and charging power are connected to a bus (BUS) at predetermined intervals from one end to the other end, and power is transferred and received to the bus (BUS). By dispersedly connecting the power storage devices (BAT) to the bus (BUS) at predetermined intervals, a large electric inertia force is applied to the bus (BUS), and a voltage difference can be eliminated in a short time. 直流网格(GR1)具有总线(BUS)，该总线(BUS)连接于作为发电装置的电力要素(EL1)以及作为多个电力设备的电力要素(EL2、EL3)。在总线(BUS)，从一端到另一端以规定的间隔连接能够进行电力的供给以及充电的多个蓄电装置(BAT)，对总线(BUS)进行电力的授受。通过将蓄电装置(BAT)以规定的间隔分散地连接于总线(BUS)，在总线(BUS)中赋予较大的电惯性力，能够以短时间消除电压差。