Analysis of Distributed PV Carrying Capacity of Regional Power Grids

Distributed photovoltaic (PV) access to the regional power grid is the future trend, to enhance the regional power grid distributed PV carrying capacity is a key technical issue in the future planning and operation of the regional power grid. Aiming at the problem that it is difficult to directly calculate the distributed photovoltaic carrying capacity of large-scale regional power grid, a distributed photovoltaic carrying capacity calculation method is proposed under the grid-based management of regional power grid. First, the extreme scenarios and capacity caps for distributed PV outlets in the regional power grid are determined by considering the timing characteristics of distributed PV and roof distribution characteristics. Secondly, based on the mixed integer second-order cone programming, a variety of active management measures are added to establish the calculation model of the distributed photovoltaic carrying capacity of the regional power grid unit. Finally, based on the dynamic reconfiguration principle of the grid regional power grid, a calculation model of the distributed photovoltaic carrying capacity of the regional power grid is established. Case analysis shows that the proposed method improves the carrying capacity of distributed PV in the regional power grid by 11.82%, which proves the effectiveness and feasibility of the proposed method