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Wind-photovoltaic-energy-storage power generation system capacity optimizing method based on wind-photovoltaic hybrid characteristic

A power generation system, wind-solar complementary technology, applied in the direction of photovoltaic power generation, wind power generation, electrical components, etc., can solve the problems of lack of economy and rationality in the configuration and operation of hybrid energy storage systems, and increase costs

Inactive Publication Date: 2017-02-08
JILIN ELECTRIC POWER RES INST LTD +3
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the cost is greatly increased, making the configuration and operation of the hybrid energy storage system less economical and rational

Method used

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  • Wind-photovoltaic-energy-storage power generation system capacity optimizing method based on wind-photovoltaic hybrid characteristic
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  • Wind-photovoltaic-energy-storage power generation system capacity optimizing method based on wind-photovoltaic hybrid characteristic

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Embodiment Construction

[0111] As shown in the figure, a wind-solar-storage hybrid power generation system based on the capacity optimization method of wind-solar-storage power generation system based on the characteristics of wind-solar complementarity is characterized in that it includes: wind power unit, photovoltaic unit, battery energy storage unit, load unit and AC power grid parallel Network interface:

[0112] The wind power unit, photovoltaic unit, and storage battery are connected to the DC bus through the DC / DC interface converter;

[0113] The local load unit is connected to the DC bus through a DC / AC converter;

[0114] The DC bus is connected to the AC grid through a DC / AC interface converter.

[0115] A capacity optimization method for a wind-solar-storage power generation system based on the complementary characteristics of wind-solar, characterized in that it includes the following steps, and the following steps are performed in sequence,

[0116] Step 1. Collect and enter the annu...

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Abstract

A wind-photovoltaic-energy-storage power generation system capacity optimizing method based on a wind-photovoltaic hybrid characteristic belongs to the technical field of a wind-photovoltaic-energy-storage power generation system. According to the wind-photovoltaic-energy-storage power generation system capacity optimizing method, through controlling the hybrid power generation system, island-mode operation and grid-connected-mode operation of the hybrid power generation system can be realized. According to the wind-photovoltaic-energy-storage power generation system capacity optimizing method, a capacity optimizing model which is suitable for the wind-photovoltaic-energy-storage power generation system is presented, wherein system cost minimizing is used as an optimizing target, and furthermore the wind-photovoltaic hybrid characteristic, a grid-connected power fluctuation condition and a system load loss rate are comprehensively considered. The wind-photovoltaic-energy-storage power generation system capacity optimizing method has advantages of sufficiently utilizing the wind-photovoltaic hybrid characteristic, ensuring high reliability in power supplying of the system just through a relatively low storage battery capacity, and reducing system cost.

Description

technical field [0001] The invention belongs to the technical field of a wind-solar-storage hybrid power generation system, and in particular relates to a capacity optimization method for a wind-solar-storage hybrid power generation system based on the complementary characteristics of wind and wind. Background technique [0002] The wind-solar-storage hybrid power generation system consists of distributed power sources, energy storage units, local load units and AC grid-connected ports. It is equivalent to a controllable unit for the AC large power grid, and can realize high reliability supply of various energy forms to local loads; it can operate in grid-connected mode and off-grid mode: in grid-connected mode, the hybrid system will The excess energy in the system is transmitted to the large AC power grid through the converter of the grid-connected port of the AC grid, and can also compensate for the power shortage in the system by absorbing the energy of the large grid; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06H02J3/38H02J3/46H02J3/28
CPCG06Q10/04G06Q50/06H02J3/28H02J3/383H02J3/386H02J3/46H02J2203/20Y02B10/10Y02E10/56Y02E10/76Y02E70/30
Inventor 吕项羽刘畅王勇李喆李骄阳蔡丽霞郭莉李德鑫余达菲高松苏阔李成钢常学飞
Owner JILIN ELECTRIC POWER RES INST LTD
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