Abstract

With increasing and massive photovoltaic (PV) connected to the distribution network(DN), there will be two-way power flow in traditional DN. As one indicator to measure the maximum amount of active power that certain bus of distribution network (DN) can be injected, the hosting capacity of DN is to be a research hotspot. This calculation method of hosting capacity of DN is presented based on optimal power flow (OPF)model and commercial solver. Based on the branch power flow equation with relaxation method, the maximum active power of renewable energy source (RES) that can be injected to DN is calculated precisely. An improved IEEE 33 buses case validates the correctness of the proposed calculation model.

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