A method for dispatching active power output of a centralized energy storage power station

Abstract

The invention relates to an active power output dispatching method of a centralized energy storage power station. The method comprises: using a minimum power distribution network active power difference fluctuation as an objective function, performing optimized dispatching on an energy storage power station combining with real-time dispatching, quasi real-time dispatching, and rolling dispatching; according to the optimized dispatching, establishing a centralized energy storage power station active power output dispatching mathematics model; determining constraint conditions of the centralized energy storage power station active power output dispatching mathematics model; performing softening process on soft constraint conditions in the constraint conditions, and obtaining a final optimized dispatching model on the centralized energy storage power station active power output dispatching mathematics model; and according to the final optimized dispatching model, solving and outputting energy storage power station active power dispatching instructions of a present dispatching period. The technical scheme can ensure the schedulability of the energy storage power station in the whole dispatching period, and effectively make up active power difference of photovoltaic output and load requirements, so as to solve a problem of active power difference fluctuation of a power distribution network in the dispatching period.

Description

Technical field: [0001] The invention relates to the field of energy storage power stations, and more particularly to a method for dispatching active power output of a centralized energy storage power station. Background technique: [0002] As the country's demand for renewable energy increases, the penetration rate of distributed power continues to increase, which causes a series of problems that pose challenges to the safe and reliable operation of the power grid. In March 2015, the "Notice of the National Energy Administration on Issuing the Implementation Plan for Photovoltaic Power Generation Construction in 2015" was issued, requiring the construction scale of new photovoltaic power plants to reach 17.8GW throughout the year, and giving priority to the construction of access distribution networks below 35kV and below 20MW distributed photovoltaic power station project. In fact, in 2014, my country's planned distributed photovoltaic installed capacity was 8GW, which ha...

AI Technical Summary

Problems solved by technology

Distributed photovoltaic power generation with high penetration rate has the characteristics of small single-point access capacity, scattered multi-point layout, and unstable output. Penetrate the acceptance capacity of distributed photovoltaic power generation and have an impact on the stable operation of the distribution network

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