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Optimal configuration method and system for energy storage system in virtual power plant based on scene set

A virtual power plant and energy storage system technology, applied in system integration technology, information technology support systems, instruments, etc., can solve problems such as abandoning light, abandoning wind, and not considering the uncertainty of distributed energy output

Inactive Publication Date: 2019-08-30
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But its defect is that it does not consider the uncertainty of distributed energy output, which will cause serious unnecessary waste such as curtailment of wind and light.
The second is to optimize the configuration of the virtual power plant as a whole. It is mainly to optimize the internal structure of the virtual power plant according to the load demand. Although the overall optimal configuration can make the virtual power plant in the best operating state, it is only applicable to one type of load. When the load type When there is a change or the structure of the virtual power plant changes, it is necessary to optimize the configuration again

Method used

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  • Optimal configuration method and system for energy storage system in virtual power plant based on scene set
  • Optimal configuration method and system for energy storage system in virtual power plant based on scene set
  • Optimal configuration method and system for energy storage system in virtual power plant based on scene set

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Embodiment 1

[0077] Such as figure 1 As shown, an optimal configuration method of energy storage system in virtual power plant based on scenario set is carried out as follows:

[0078] Step 1. Analyze and build a virtual power plant model including wind turbines, photovoltaics, electric vehicles and energy storage systems.

[0079] Step 1.1. Wind power generation system: The output of the wind power generation system is not only related to its own working characteristics, but also related to local wind speed, meteorological conditions and other environmental factors. It is generally believed that the wind speed obeys the Weibull distribution.

[0080] The parameters of the Weibull distribution are obtained by collecting local historical meteorological data, and the operation of the Monte Carlo sampling fan can be expressed by the following formula:

[0081]

[0082]

[0083] In the formula: k and c are the shape parameter and scale parameter of Weibull distribution respectively; P ...

Embodiment 2

[0172] An optimal configuration system for an energy storage system in a virtual power plant based on a scenario set, which includes:

[0173] Virtual power plant model building unit: build a virtual power plant model including wind turbines, photovoltaics, electric vehicles and energy storage systems;

[0174] Combined output scenario set generation unit: Simulate the uncertain factors in the virtual power plant through Monte Carlo sampling to generate a combined output scenario set;

[0175] Objective function establishment unit: establish the objective function of the energy storage system capacity optimization configuration model considering cost;

[0176] Optimal configuration model solving unit: through the differential evolution algorithm, combined with various constraints in actual operation, it solves the optimal configuration model of the energy storage system in the virtual power plant.

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Abstract

The invention discloses an optimal configuration method and system for an energy storage system in a virtual power plant based on a scene set. The optimal configuration method of the energy storage system comprises the following steps: constructing a virtual power plant model comprising a fan, a photovoltaic vehicle, an electric vehicle and the energy storage system; simulating uncertainty factorsin the virtual power plant through Monte Carlo sampling, and generating a combined output scene set; establishing an energy storage system capacity optimal configuration objective function considering the cost; and solving the optimal configuration model of the energy storage system in the virtual power plant through a differential evolution algorithm in combination with various constraint conditions in actual operation. The uncertainty of each distributed energy output in the virtual power plant is considered, and the energy storage system is optimally configured, so that the purpose of reducing the construction cost of the virtual power plant is achieved.

Description

technical field [0001] The invention relates to the field of power system operation and planning, in particular to a method and system for optimal configuration of an energy storage system in a virtual power plant based on a scenario set. Background technique [0002] With the rapid development of new energy sources such as photovoltaic power plants, wind farms, and electric vehicles, the application of virtual power plant technology in the field of power system operation and planning is also increasing. Different from the micro-grid technology, the virtual power plant technology more actively participates in the operation of the power system. However, due to the uncertainty of distributed energy output, it will have a certain impact on the daily operation of the virtual power plant and the security of the distribution network. As an important part of the virtual power plant, the energy storage system can not only adjust the fluctuation of wind turbine and photovoltaic outp...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06G06N3/00
CPCG06N3/006G06Q10/04G06Q10/0637G06Q50/06Y02E40/70Y04S10/50
Inventor 赵波李志浩倪筹帷章雷其汪湘晋刘鑫吴红斌
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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