A capacity allocation method for grid-connected wind-solar-storage system

Abstract

The invention discloses a capacity configuration method used for a grid-connected wind and light storage system. The method includes following steps: selecting a target area; acquiring the wind speed, the solar irradiation intensity, the ambient temperature, and the electricity consumption power of a typical year of the target area; determining the maximum possible installation capacity of a wind generating set and a photovoltaic array of the target area according to the wind speed, the solar irradiation intensity, and the ambient temperature of the typical year of the target area; obtaining the complementary characteristics of wind energy and luminous energy of the target area according to the wind speed, the solar irradiation intensity, and the ambient temperature of the typical year of the target area; calculating and obtaining the configuration capacities of the wind generating set and the photovoltaic array according to the complementary characteristics of the wind energy and the luminous energy of the target area; and calculating and obtaining configuration parameters of an energy storage battery according to the configuration capacities of the wind generating set and the photovoltaic array of the target area. According to the capacity configuration method, the configuration capacities of the wind generating set and the photovoltaic array can be used to the maximum, and the generating utilization rate of the wind generating set and the photovoltaic array can be increased.

Description

technical field [0001] The invention relates to the technical field of capacity configuration of a distributed power generation system. More specifically, it relates to a capacity allocation method for a grid-connected wind-solar-storage system. Background technique [0002] The installation cost, operation benefit and operation index of distributed generation system are the main factors to be considered in the planning of distributed generation. Therefore, in the grid-connected wind-solar-storage system, it is necessary to rationally configure the capacity of wind turbines, photovoltaic generators and energy storage batteries, so that the grid-connected wind-solar-storage system can achieve the highest profit under the premise of meeting the requirements of operating indicators. [0003] In the prior art, most of the capacity allocation methods for grid-connected wind-solar-storage systems are to establish an optimization objective function based on the installation cost o...

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Problems solved by technology

[0003] In the prior art, most of the capacity allocation methods for grid-connected wind-solar-storage systems are to establish an optimization objective function based on the installation cost or operating cost of the grid-connected wind-solar-storage system, so that the total cost of the grid-connected wind-solar-storage system is the lowest, and Does not consider the impact of different operation modes of the grid-connected wind-solar-storage system

The above-mentioned capacity allocation method generally means that the installed capacity of wind turbines and photovoltaic arrays is not fully utilized, or it is easy to cause a large amount of curtailment of wind or light in practical applications.

In the case of abandoned wind or light, although the cost of the grid-connected wind-solar-storage system can be achieved at the lowest cost, the wind or light abandonment will lead to low utilization of wind energy and solar energy, so the total income of the grid-connected wind-solar-storage system not the highest

[0004] In addition, in the existing technology, the cost of energy storage batteries is very high, so the capacity configuration of energy storage batteries has a great impact on the cost and benefits of grid-connected wind-solar-storage systems

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