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Coordinative optimization configuration method for capacity of photovoltaic array, energy storage device and transformer of photovoltaic charging station

A configuration method and coordinated optimization technology, applied in photovoltaic charging station light, transformer capacity coordinated optimization configuration, storage field, can solve problems such as unconsidered impact, achieve the effect of ensuring diversity, improving accuracy and reducing complexity

Inactive Publication Date: 2018-11-23
NANJING ELECTRIC POWER ENG DESIGN +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It does not consider the impact of distributed photovoltaics on traditional power supply equipment in the station when connected to traditional charging stations, the randomness and volatility of photovoltaic output and load demand, and the internal dynamic power storage constraints of energy storage equipment.

Method used

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  • Coordinative optimization configuration method for capacity of photovoltaic array, energy storage device and transformer of photovoltaic charging station
  • Coordinative optimization configuration method for capacity of photovoltaic array, energy storage device and transformer of photovoltaic charging station
  • Coordinative optimization configuration method for capacity of photovoltaic array, energy storage device and transformer of photovoltaic charging station

Examples

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Embodiment

[0047] Take a certain area (32°14' north latitude 32°14' east longitude 118°48') to plan and build 1500m 2 Photovoltaic charging station as an example:

[0048] Step 1. Determine the objective function of the photovoltaic charging station including:

[0049] 1) Transformer annual comprehensive cost function: C 1 =C d +C s +C t

[0050] The annual comprehensive cost constraints of the transformer are:

[0051] The lower limit of transformer capacity meets the maximum load demand S of electric vehicle charging in the charging station b ≥S L / n;

[0052] Transformer capacity upper limit When selecting 2 or 3 transformers, when one of them is out of service, the capacity of the other or 2 transformers shall not exceed the maximum load in the planning area: S b ≤S L or S b ≤S L / 2.

[0053] where S b is the capacity of a single transformer, S L It is the maximum apparent power required for charging in the operating area of ​​the photovoltaic charging station, and n i...

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Abstract

The invention discloses a coordinative optimization configuration method for the capacity of a photovoltaic array, an energy storage device and a transformer of a photovoltaic charging station. The method comprises the following steps: firstly, determining a target function of the photovoltaic charging station, acquiring basic data of the photovoltaic charging station, and determining constraint conditions of the photovoltaic electric automobile charging station; secondly, optimizing the target function by applying an NSGA-II multi-objective genetic algorithm to obtain an optimization result;and finally, selecting the most reasonable construction requirement based on a construction investment budget of a investor according to the optimization result, and performing corresponding hardwarefacility configuration in the photovoltaic electric automobile charging station according to the construction requirement. The coordinative optimization configuration method disclosed by the inventionis applicable to all types of cities with the photovoltaic electric automobile charging station; an energy control strategy-based photovoltaic charging station optimization configuration method for coordinative optimization of the capacity of the photovoltaic array, the energy storage device and the transformer; and a theoretical foundation and a technical support are provided for construction and operation of an electric automobile charging station with a photovoltaic power generation system, so as to guarantee the economy, the environmental friendliness and the reliability of the construction and the operation of the charging station.

Description

technical field [0001] The invention relates to the technical field of substation intelligent monitoring, in particular to a method for coordinating and optimizing the configuration of light, storage and transformer capacities in a photovoltaic charging station. Background technique [0002] The promotion of electric vehicles is an important means to solve the energy crisis and relieve environmental pressure. The construction of electric vehicle charging stations is an indispensable condition. The combination of photovoltaic power generation and traditional charging stations has greater prospects. The technologies that need to be solved are photovoltaic arrays, Capacity allocation of energy storage devices and transformers and other equipment. [0003] The current research basically simply considers the capacity between the photovoltaic array and the energy storage device, and smoothes the photovoltaic output through energy storage. When the photovoltaic output exceeds the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06G06N3/12
CPCG06N3/126G06Q10/04G06Q10/0637G06Q50/06
Inventor 薄鑫吴倩张汀荟韩笑赵菲菲许偲轩王洋马宏原王琦成健杜渐
Owner NANJING ELECTRIC POWER ENG DESIGN
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