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Maximum Hosting Capacity Calculation Method of Grid-connected PV in Distribution Networks Based on Improved Big Bang-Big Crunch Algorithm

With fast growing integration of distributed renewable photovoltaics (PV) in distribution system, negative impacts will be caused on the planning and operation of distribution system. Study of maximum allowable capacity of grid-connected PV is able to provide theoretical foundation and technical support for the planning, construction and operation of the future distribution system. This paper proposes a maximum hosting capacity model of grid-connected PV in distribution system considering the constraints of nodal voltage, line capacity, total harmonic voltage distortion and short-circuit current. The improved Big Bang-Big Crunch algorithm is adopted to solve this problem. Finally, the proposed model is tested on a modified IEEE 33-bus test system. The effectiveness of the proposed method is demonstrated by comparing with several existing methods.