Abstract
This paper presents a case study of an isolated industrial power system for aluminum production. The novel concept is that the cost of aluminum electrolysis can be significantly reduced by innovative application of hybrid systems incorporating wind energy and low-grade coal. In addition, the low-grade coal, which sale is not profitable in the market, can be locally consumed by the isolated power system. The power system thus fully utilizes the local resources in an effective and economic manner. However, several technical and economic issues are still of concern because the industrial system is isolated from the state grid. This paper hence discusses these issues and demonstrates the feasibility of such a hybrid power system from the technical and economic perspectives.
Highlights
The ever-increasing demand for clean energy is stimulating the worldwide installation of wind generators to drive our future society
This paper presents an industry project of an isolated power system located in Inner Mongolian province financed by the China Power Investment Corporation, which is one of the five largest generation corporations of China [23]
The power system is located in Zhahazhuoer (ZHZE), Tongliao (TL) Region, Inner Mongolian (IMo) province, which is one of China’s largest energy producing provinces thanks to its substantial energy resources [26]
Summary
The ever-increasing demand for clean energy is stimulating the worldwide installation of wind generators to drive our future society. To overcome the above problems, one of the solutions is off-grid technology, which enables high penetration of wind power integrated into an isolated system. This paper presents an industry project of an isolated power system located in Inner Mongolian province financed by the China Power Investment Corporation, which is one of the five largest generation corporations of China [23]. The industry system was powered by coal-fired generators for the electrolysis of aluminum, which has been categorized into the high energy consumption sector of China [24]. The power balancing of this isolated system should be carefully investigated before the construction of such a system at this high wind penetration level The investment will result in higher and cleaner profits from aluminum production using the presented wind-coal technologies
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