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Calculation method of matched energy storage capacity of large-scale photovoltaic power station under power restriction requirements

A photovoltaic power station, energy storage capacity technology, applied in the direction of photovoltaic power generation, electrical components, energy storage, etc., can solve problems such as no consideration, achieve the effects of reducing output fluctuations, good applicability, and improving computing efficiency

Active Publication Date: 2018-12-18
TIANJIN UNIV
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Problems solved by technology

[0003] At present, there is a lack of research in the industry on the supporting energy storage capacity of large-scale photovoltaic power plants under the requirements of power constraints. Consider the weather

Method used

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  • Calculation method of matched energy storage capacity of large-scale photovoltaic power station under power restriction requirements
  • Calculation method of matched energy storage capacity of large-scale photovoltaic power station under power restriction requirements
  • Calculation method of matched energy storage capacity of large-scale photovoltaic power station under power restriction requirements

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Embodiment 1

[0094] The present invention will be further discussed below in conjunction with the accompanying drawings and an example of a certain photovoltaic base in Qinghai Province:

[0095] The calculation method for the supporting energy storage capacity of large-scale photovoltaic power plants under the requirements of power cuts includes the following steps:

[0096] (1) Considering the land occupation of the photovoltaic base, possible investment and the acceptable capacity of the power grid, the total installed capacity of the photovoltaic power station is determined to be 100MWp.

[0097] (2) According to the historical weather data of the photovoltaic base, the time proportion of various typical weather days such as sunny, cloudy, rain, and snow in each month of each historical year is counted, and the time proportion of typical weather days in each month is calculated. The time ratio of various typical weather days averaged over many years is used as the time ratio of typical...

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Abstract

The invention discloses a calculation method of matched energy storage capacity of a large-scale photovoltaic power station under power restriction requirements, and the method includes the followingsteps: S1, determining the total installed capacity of the photovoltaic power station; S2, determining the total installed capacity of the photovoltaic power station; S2, obtaining the time proportionof typical weather days in each month of the plan year of the photovoltaic base; S3, recording the power output process of the photovoltaic power station according to the time proportion obtained inthe step S2, and obtaining the power output process of the photovoltaic power station installed with the unit capacity in each typical weather day of each month by the time period; 4, selecting the type of the energy storage battery to obtain the service life and the investment cost of the unit capacity of the energy storage battery; S5, establishing an optimization model for calculating the capacity of the matching energy storage battery of the large-scale photovoltaic power station under the power restriction requirement; and S6, adopting an optimization algorithm to solve the model to obtain the optimal energy storage capacity of the large-scale photovoltaic power station under power restriction requirements. The invention provides an optimal capacity decision model for matched energy storage of a large-scale photovoltaic power station under power restriction requirements, and adopts the optimization algorithm to solve the model, thereby improving the calculation efficiency of the model.

Description

technical field [0001] The invention relates to the field of configuration of energy storage batteries for photovoltaic power plants, and in particular to a method for calculating the supporting energy storage capacity of large photovoltaic power plants under the requirement of power limitation. Background technique [0002] Energy is the basic driving force of the national economy. Under the pressure of the severe energy situation and the human ecological environment (such as climate warming), countries all over the world regard the development and utilization of sustainable clean energy as the direction of future energy development. Among them, solar energy is unique in its abundant resources, no geographical boundaries, and clean It has become one of the hot spots that people pay attention to. my country is one of the regions with the most abundant solar energy in the world and has good conditions for solar energy utilization. According to the national renewable energy ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/32
CPCH02J3/383H02J3/32H02J2203/20Y02E10/56Y02E70/30
Inventor 马超华正操练继建
Owner TIANJIN UNIV
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