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Wind-solar power generation and hydrogen-production hydrogen-storage system and operation control method thereof

A technology for wind and solar power generation and photovoltaic systems, which is applied in photovoltaic power generation, wind power generation, current collectors, etc., and can solve the problems of low energy utilization rate, short equipment life, and large power grid impact.

Active Publication Date: 2019-05-14
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a wind power generation and hydrogen production hydrogen storage system and its operation control method, which mainly solves the problem that the wind power generation and hydrogen production hydrogen storage system has poor peak regulation ability and cannot meet the requirements of the evening peak load, the impact of wind energy on the power grid is large, grid connection is difficult, and the system Problems of hydrogen roughness, short equipment life and low energy utilization
The present invention effectively solves this problem by using a supercapacitor and a power coordination control module and a monitoring module

Method used

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  • Wind-solar power generation and hydrogen-production hydrogen-storage system and operation control method thereof
  • Wind-solar power generation and hydrogen-production hydrogen-storage system and operation control method thereof

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specific Embodiment approach

[0058] As a specific embodiment provided by the present invention, preferably, it is characterized in that it includes the following steps:

[0059] A. Establish low-bandwidth communication between the controllers of each converter and the power coordination control module and monitoring module: the controllers of each converter adopt an adaptive PI controller to collect monitoring data of each monitoring system. The monitoring data includes the following Some or all of them: wind farm power, superior power grid dispatching power, cooling and heating system power, user power, photovoltaic system power, overall power of solid oxide electrolyzer group / hydrogen fuel cell group, oxygen storage / hydrogen tank pressure, The power and state of charge SOC of the energy storage device, the voltage and power of the supercapacitor; the above monitoring data are connected to the input interface of the ARM processor in turn, and the output port of the power reference value of each part is de...

Embodiment approach

[0066] As a specific embodiment provided by the present invention, preferably, the control of the supercapacitor artificially sets three voltage ranges, as shown in formula (1) (U SCmin high SCmax ,U SCmin low SCmax ); three sets of voltage ranges correspond to three working states (status 1 when the voltage is too high to be charged, status 2 when the voltage is too low to be discharged, and status 3 when the voltage is too low to be discharged), the condition for switching the voltage range of the supercapacitor, η SC→ n SClow The same conditions as the electrolyzer mode 1 is converted to mode 3, η SC→ n SChigh The conditions are the same as the fuel cell operation mode 8 to mode 9; the supercapacitor can choose to work with the fuel cell or with the electrolyzer according to the system operation state;

[0067]

[0068] u SCmin and U SCmax is an inherent characteristic of supercapacitors and needs to be selected according to system requirements, while U high and U l...

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Abstract

The invention relates to a wind-solar power generation and hydrogen-production hydrogen-storage system and an operation control method thereof, and relates to the technical field of new energy wind-solar power generation and hydrogen production. According to the invention, a rectifier at a fan side of a wind power farm is connected with a grid side inverter; a DC (Direct Current) bus is connectedwith a supercapacitor of a DC / DC convertor; the rear surface of the supercapacitor is connected with a hydrogen production and hydrogen storage system; a photovoltaic system is connected with the DC bus in front of the supercapacitor by the DC / DC convertor and is used as a power compensation unit of the wind power farm; the wind-solar power generation and hydrogen-production hydrogen-storage system further comprises a power coordination control module and a monitoring module; and problems of poor peak regulation capacity, unsmooth hydrogen production, short service life of equipment and the like of a wind-solar power generation and hydrogen-production hydrogen-storage system are mainly solved. The wind-solar power generation and hydrogen-production hydrogen-storage system has the characteristics that the system is high in peak regulation capacity; the requirement of a load evening peak can be met; smooth hydrogen production can be ensured; the service life of the equipment is prolonged; flexible grid connection can be implemented in the premise of ensuring purity of produced hydrogen; and an energy utilization rate is high.

Description

technical field [0001] The invention relates to the technical field of new energy wind power generation and hydrogen production, in particular to a wind power generation and hydrogen production hydrogen storage system and an operation control method thereof. Background technique [0002] With the rapid development of modern society, the demand for energy has reached a stage of rapid growth. Not only is there a shortage of electricity and energy, but the cooling and heating systems also cause serious air pollution. Issues such as energy security and matching supply and demand have become increasingly prominent. Resources such as scenery have begun to attract people's attention. The randomness, volatility, and irregularity of wind energy will make it difficult to connect wind power to the grid, which will have a large impact on the grid and a high amount of wind curtailment. The wind power generation system cannot meet the requirements of the evening peak load. Enhancing t...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J7/34
CPCY02E10/56Y02E10/76
Inventor 李争张丽平孙鹤旭董维超赵宇洋
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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