In view of the current problem of unclear carbon emission characteristics of each node in the distribution network

this paper takes the distribution network with hydro-PV-EV-ESS as the research object to analyze the node carbon emission characteristics. First

according to the coupling relationship between carbon emission flow and power flow

a carbon emission flow calculation method based on distribution network power flow calculation is proposed. On this basis

in order to solve the problem of carbon emissions caused by the loss of energy storage systems

a carbon emission model of energy storage systems is established

and a measurement method is proposed to evenly allocate energy storage losses to the amount of energy storage discharge. Finally

a typical hydro-PV-EV-ESS distribution network is used as a calculation example

and the carbon emission flow calculation method is used to analyze the carbon potential of different nodes and the spatiotemporal distribution characteristics of carbon emissions. The node carbon intensity and carbon emission distribution of distribution network with distributed small hydropower

distributed photovoltaic

energy storage system and different electric vehicle charging strategies were analyzed and the impact mechanism of carbon emissions is revealed. It has a guiding role in the low-carbon operation of future distribution networks.