Power distribution network distributed photovoltaic grid-connected acceptance capability calculation method considering energy station

Abstract

A power distribution network distributed photovoltaic grid-connected acceptance capacity calculation method considering an energy station comprises: acquiring basic data; constructing a distributed photovoltaic grid-connected maximum admitting ability calculation model; converting into a mixed integer second-order cone programming model, and solving; constructing an optimization model of the day-ahead economic dispatching of the energy station; and converting into a mixed integer second-order cone programming model and solving to obtain the distributed photovoltaic maximum grid-connected capacity, the whole-day operation total cost of the energy station, the power distribution network load flow calculation result and the operation scheme of each component unit of the energy station. The method has the advantages that according to the development trend of the energy industry and energy marketization reform, the distributed energy station is combined to consider the calculation problem of the distributed photovoltaic grid-connected acceptance capacity, and the operation economy of the distributed energy station is guaranteed while the absorption capacity of the power distribution network to the distributed photovoltaic is improved.

Description

technical field [0001] The invention belongs to the technical field of calculation of distributed photovoltaic grid-connected acceptance capacity of distribution network, and in particular relates to a calculation method of distributed photovoltaic grid-connected acceptance capacity of distribution network considering energy stations. Background technique [0002] In recent years, with the gradual depletion of fossil fuel resources and the increasingly prominent environmental problems, renewable energy sources such as photovoltaic power generation and wind power generation have been vigorously developed and utilized. The website has also been vigorously applied and promoted. Because renewable energy power generation is affected by environmental factors, it has obvious randomness and volatility, which brings many problems to the safe operation of the distribution network. At the same time, distributed energy stations are an important part of the regional comprehensive energy ...

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Problems solved by technology

[0003] At present, the calculation methods for the acceptance capacity of distributed power generation in distribution network mainly include interior point method, analytical method, heuristic algorithm, etc. At the same time, considering the introduction of distributed energy stations, their own economic scheduling problems must also be taken into account. While completing the analysis of the maximum access capacity of photovoltaics, the optimal strategy of distributed energy stations is determined. Due to the limitation of calculation scale and the requirements for solution speed and accuracy, traditional analysis methods are no longer applicable and have certain limitations.

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