A photovoltaic DC power supply system and method for electrolytic production of electrolytic aluminum
A power supply system, electrolytic aluminum technology, applied in photovoltaic power generation, battery circuit devices, current collectors, etc., can solve the problems of power grid peak-valley adjustment influence, single mode, etc.
Inactive Publication Date: 2019-10-11
NORTHEASTERN UNIV LIAONING
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Problems solved by technology
[0003] Electrolytic aluminum currently has a power supply system that only supplies power to the grid, and the method is single. However, electrolytic cells in electrolytic aluminum are developing in the direction of large capacity, high current density, and high technology, and the electrolytic aluminum industry itself is a high energy-consuming industry. It will also have a greater impact on the peak-valley regulation of the power grid
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[0053] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0054] A photovoltaic DC power supply system for the electrolytic production of electrolytic aluminum, such as figure 1 As shown, it includes photovoltaic power generation module, fuel cell energy storage module, space-time heterogeneous coupling controller and grid power supply module.
[0055] The photovoltaic power generation module is used to provide DC power for the electrolytic aluminum electrolytic cell and charge the fuel cell energy storage module.
[0056] The fuel cell energy storage module is used when the photovoltaic power generation maximum power P of the photovoltaic power generation module s Greater than the rated power P of the electrolytic aluminum electrolytic cell 0 At the same time, the remaining electric energy of the photovoltaic power generation module is stored through the power-to-gas method, and when the elect...
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The invention proposes a photovoltaic DC power supply system and method for electrolytic aluminum electrolysis production. The system includes a photovoltaic power generation module, a fuel cell energy storage module, a spatiotemporal heterogeneous coupling controller and a power grid power supply module; the photovoltaic power generation module is an electrolytic aluminum electrolysis The tank provides DC power and charges the fuel cell energy storage module; the fuel cell energy storage module stores the remaining electric energy of the photovoltaic power generation module, and uses the stored gas as fuel to obtain electric energy to supply power to the electrolytic aluminum electrolytic tank; the grid power supply module is electrolytic The aluminum electrolytic cell supplies power; the spatiotemporal heterogeneous coupling controller is based on the maximum photovoltaic power P of the photovoltaic power generation module. s and the rated power P of the electrolytic aluminum electrolytic cell 0 Select the electric energy input side of the electrolytic aluminum electrolytic cell based on the relationship between the different input side voltages and the rated voltage U of the electrolytic aluminum electrolytic cell. 0 Calculate the required duty cycle and control the output voltage on the power input side. This system relieves the power supply pressure and peak load regulation pressure of the power grid, and saves the consumption of fossil energy.
Description
technical field [0001] The invention belongs to the technical field of clean energy power supply and power electronic energy conversion, and in particular relates to a photovoltaic DC power supply system and method for electrolytic production of electrolytic aluminum. Background technique [0002] The aluminum electrolysis load is a primary load, and the electrolytic cell, multi-functional crane, air compressor station, substation rectifier and other loads in the electrolysis workshop are also primary loads. The primary load of the aluminum electrolysis plant accounts for 95% of the total plant load. The electrolytic series current of the large aluminum industrial base is also developing in the direction of super large. The high load of the electrolytic aluminum plant has created a large burden on the power supply system of the power grid. At the same time, the electrolytic reaction in the production of electrolytic aluminum inevitably produces carbon dioxide and affects t...
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IPC IPC(8): H02J7/35H02J7/00H02J3/32
CPCH02J3/32H02J7/342H02J7/35Y02E10/56Y02E60/36Y02E70/30Y02P90/40Y02P90/50
Inventor 孙秋野张化光高子昊马大中黄博南刘振伟陈斯陈磊
Owner NORTHEASTERN UNIV LIAONING