Electrolytic aluminium system adopting non-grid multi-energy collaborative power supply

Abstract

The invention relates to an electrolytic aluminium system adopting non-grid multi-energy collaborative power supply, which comprises an electrolytic aluminium device, a solar condensation and power generation device, a wind power generation device, as well as an electric quantity control device and a heat dissipation control device, wherein a heat exchanger is arranged on a side wall casing of an aluminium cell; a thermal insulating layer is arranged on the outer side of the heat exchanger; the heat exchanger is connected with a tubular receiver through a pipeline; the heat dissipation control device is connected with the control output end of the electric quantity control device. During the use, the electric quantity supplied by the public grid to the electrolytic aluminium device during the daytime is the minimum electric quantity required for thermal insulation operation, electric quantity generated by the wind power generation device and the solar condensation and power generation device are as supplementary, while electric quantity supply limit of the public grid to the electrolytic aluminium device at night is canceled. The system adapts to the fluctuation of wind and solar power generation, fully utilizes time-of-use price difference of the public grid to promote the economic benefits of enterprises, and can be used for assisting the public grid in pitch peak.

Description

technical field [0001] The invention relates to an electrolytic aluminum system for non-grid-connected multi-energy cooperative power supply, which belongs to the technical field of electrolytic aluminum. Background technique [0002] Since the reform and opening up, my country's national economy has continued to develop at a high speed, and the total economic volume has continued to leap to a new level. With the rapid economic development, my country's electricity demand is also growing rapidly. In 2012, the electricity consumption of the whole society in my country reached 4,959.1 billion kwh, a year-on-year increase of 5.5%. From 1980 to 2012, the electricity consumption of the whole society in my country increased by 16.8 times, with an average annual growth rate of 9.2%. [0003] Coal is the main energy source in my country, accounting for about 70% of the total primary energy consumption. In 2012, my country's coal power installed capacity reached 758 million kilowa...

AI Technical Summary

Problems solved by technology

However, the energy storage multi-stage utilization device has two disadvantages: 1) Compared with directly using the steam generated by the solar energy to drive the steam turbine to generate electricity, the addition of the energy storage multi-stage utilization device causes energy loss, and the lost energy is not less than 30% ; 2) Increased cost, the energy storage multi-stage utilization device has a large volume, and the process requirements are high, and the construction cost is relatively high

[0009] In addition, like the traditional electrolytic aluminum device, the power fluctuations generated by the wind-solar complementary electrolytic aluminum device will have a great impact on the power grid, and it cannot make full use of the peak-valley difference of the power grid to improve the economic benefits (profits) of the enterprise.

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