With the implementation of China′s “Dual Carbon” strategy

distributed power

especially distributed photovoltaics

is experiencing a surge in growth.The unregulated

large-scale integration of distributed photovoltaics has caused problems such as overvoltage and reverse equipment overload in some distribution grids

hindering the orderly and sustainable development of distributed photovoltaics.This paper proposes a swift calculation method to compute the permissible capacity of distributed photovoltaics for power distribution equipment and administrative regions.This method considers various constraint indicators of the distribution equipment and system

balancing computational accuracy and efficiency.Under the precondition of ensuring the secure

reliable

and economical operation of the distribution network

it scientifically ascertains the maximum capacity of distributed photovoltaic capacity that the network can sustain

providing a foundation for the organized integration and robust development of distributed photovoltaics.Finally

the method′s scientific reliability and practical feasibility are corroborated through a county-level case study.