Economic Benefit Between Autonomous Power and Purchasing Power from State Grid in Iron and Steel Enterprises

doi:10.12068/j.issn.1005-3026.2015.07.015

Journal of Northeastern University Natural Science ›› 2015, Vol. 36 ›› Issue (7): 980-984.DOI: 10.12068/j.issn.1005-3026.2015.07.015

• Materials & Metallurgy • Previous Articles Next Articles

Economic Benefit Between Autonomous Power and Purchasing Power from State Grid in Iron and Steel Enterprises

LIU Jing-yu¹， CHAI Shao-xuan²， CHANG Yong³

1. SEP Key Laboratory on Eco-industry， Northeastern University， Shenyang 110819， China; 2. Sales Department， Shanxi Taigang Iron & Steel Co.，Ltd.， Taiyuan 030003， China; 3. Ironmaking Plant， Shanxi Taigang Iron & Steel Co.，Ltd.， Taiyuan 030003， China.

Received:2014-08-21 Revised:2014-08-21 Online:2015-07-15 Published:2015-07-15
Contact: LIU Jing-yu
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Abstract

Abstract: In view of the current price relationship between autonomous power and state grid power in iron and steel enterprises， an optimal economic management model of autonomous power plant was established using the method of economic planning. The optimal production and distribution plan of enterprise and the optimal power purchasing scheme considering the peak-valley power prices were discussed by solving the enterprise’s profit maximum function. The optimal schemes and results show that the level of the enterprise’s benefit has relationships mainly with the buying-power unit profit contribution after resale， the power supply unit profit and the quantity of power sale to grid. It is encouraged that， more outsourcing and less autonomous power is used as far as possible at the valley price of grid power， and more autonomous and less outsourcing power is used as far as possible and surplus electricity is saled online at the peak price of grid power.

Key words: integrated iron and steel enterprises, autonomous power, state grid, economic management model, optimal production plan

CLC Number:

TK018

LIU Jing-yu， CHAI Shao-xuan， CHANG Yong. Economic Benefit Between Autonomous Power and Purchasing Power from State Grid in Iron and Steel Enterprises[J]. Journal of Northeastern University Natural Science, 2015, 36(7): 980-984.

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Economic Benefit Between Autonomous Power and Purchasing Power from State Grid in Iron and Steel Enterprises

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