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

A technology of energy storage power station and scheduling method, applied in the direction of single-network parallel feeding arrangement, etc., can solve the problem of increasing the difficulty of distribution network operation control, reducing the acceptance capacity of high-permeability distributed photovoltaic power generation, and the impact of stable operation of distribution network, etc. question

Active Publication Date: 2018-01-19
CHINA ELECTRIC POWER RES INST +2
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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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  • A method for dispatching active power output of a centralized energy storage power station
  • A method for dispatching active power output of a centralized energy storage power station
  • A method for dispatching active power output of a centralized energy storage power station

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Embodiment 1

[0071] The invention of this example proposes a method for dispatching active power output of a centralized energy storage power station, including:

[0072] (1) Taking the minimum fluctuation of the active power balance of the distribution network as the objective function, the optimal scheduling of the combination of real-time scheduling, quasi-real-time scheduling and rolling scheduling is carried out for the energy storage power station; according to the optimal scheduling, a centralized energy storage power station active output scheduling is established mathematical model;

[0073] (2) Determine the constraint conditions of the mathematical model of active power output dispatching of the centralized energy storage power station;

[0074] (3) softening the soft constraints among the constraints, and obtaining the final optimal scheduling model through the mathematical model of active power output scheduling of the centralized energy storage power station;

[0075] (4) So...

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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...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/48
Inventor 薛金花叶季蕾陈梅杨波刘皓明陶琼许晓慧汪春桑丙玉陆丹夏俊荣刘海璇张祥文
Owner CHINA ELECTRIC POWER RES INST
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