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| Study on Fluctuation Characteristics of Instantaneous Temperature Field in Aluminum Electrolysis Pot for Wind Power Accommodation |
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Received:October 19, 2016
Revised:October 26, 2016
Accepted:October 31, 2016
Published Online:January 22, 2017
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| DOI：doi：10.3969/j.issn.1007-7545.2017.02.006 |
| KeyWord:aluminum electrolysis; wind power accommodation; temperature field; transient coupling |
| Author | Institution |
| HE Guixiong |
中国电力科学研究院 |
| RAN Ling |
中南大学冶金与环境学院 |
| XIONG Min |
中国电力科学研究院 |
| ZHANG Hongliang |
中南大学冶金与环境学院 |
| TANG Yanmei |
中国电力科学研究院 |
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| Abstract: |
| To solve the unclear effect of current fluctuation on temperature field during accommodating wind power by electrolysis pot, transient strongly coupled thermo-electric model was built to study thermal field of a 420 kA large-scale aluminum electrolysis pot during a complete accommodation cycle. With two-hour accommodation cycle and six-hour recovery cycle, transient variation characteristics of thermal field were calculated for different accommodation current, namely 2%, 5% and 10% of the design current. The results show that temperature of each region in pot rises with increase of enhancement amplitude, and the maximum temperature change occurs in melt zone. The region in pot closer to melt zone shows bigger change of temperature while the region closer to shell has smaller change of temperature except for aluminum rod and steel claw. Temperature of pot drops very slowly during a relatively long period when current return to design value. Therefore, the current fluctuation amplitude in aluminum electrolysis pot should not be too large. |
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