Power control method of non-grid multi-energy collaborative power supply electrolytic aluminum system

Abstract

The invention relates to a power control method for an electrolytic aluminum system that is not grid-connected and multi-energy coordinated power supply. The electrolytic aluminum system includes an electrolytic aluminum device, a wind power generation device and a solar power generation device. The grid-connected form supplies power to the electrolytic aluminum device, and the waste heat emitted by the electrolytic aluminum device is recovered to generate power and supplied to the aluminum electrolytic cell; during the day, the electricity supplied by the public grid to the aluminum electrolytic cell is the minimum amount required for heat preservation operation, The electricity generated by the wind power generation device and the solar concentrating power generation device is used as a supplement; at night, the restriction on the electricity supply of the electrolytic aluminum device by the public grid is canceled. This method can adapt to the fluctuation of wind power and solar power generation, and can make full use of the peak-valley power price difference of the public grid to improve the economic benefits of the enterprise, and can assist the public grid to perform peak regulation and reduce the peak load caused by the large difference between the peak load and the low-valley load. difficulty.

Description

technical field [0001] The invention relates to a power control method of an electrolytic aluminum system for non-grid-connected multi-energy cooperative power supply, and belongs to the technical field of electrolytic aluminum systems. 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 cap...

AI Technical Summary

Problems solved by technology

However, like the traditional electrolytic aluminum device, the power fluctuation 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, nor can it solve the problem of high Impact of Power Fluctuation of Loaded Electrolytic Aluminum Plant on Public Grid