The invention discloses an 
optical storage DC power supply 
system based on a coordination control device. The 
optical storage DC power supply 
system comprises a field equipment layer, a 
network communication layer and a 
station control management layer. The field equipment layer comprises a distributed 
photovoltaic power generation unit, a lead-acid 
battery energy storage unit and a 
load unit, wherein the distributed 
photovoltaic power generation unit and the lead-acid 
battery energy storage unit are accessed to a 
DC bus by means of a DC / 
DC converter. The 
network communication layer is equipped with the coordination control device, which acquires operation data of a grid-connected 
current transformer, the DC / 
DC converter and the 
load unit, packages the acquired data and uploads the data to a host 
server of the 
station control management layer, and performs remote metering, 
remote control and remote regulation on parameters of equipment of the field equipment layer through issuing messages. The distributed 
photovoltaic power generation unit, the lead-acid 
battery energy storage unit and the grid-connected 
current transformer can operate according to instructions of the 
optical storage coordination control device. The optical storage DC power supply 
system can meet the requirement of guaranteeing stability of the 
DC bus under the operating conditions of power outage of an 
AC power supply, input fluctuation of photovoltaic power generation, load switching and the like.