面向风电消纳的铝电解槽电磁场特性研究

针对铝电解消纳风电过程中物理场将发生非线性变化的现状,建立针对消纳风电的铝电解槽电磁场模型,并开展了消纳电流为设计电流的25%、20%、15%、10%和5%五种情况下的电磁场计算。结果表明,槽电压随着消纳的幅度增加而增加,同时铝液层水平电流密度亦存在相应变化,但电场整体趋势未变,各部分压降均在合理水平;此外,随着消纳风电量的增加,槽内磁场极值与均值都会相应增加,但整体的磁场分布规律未发生大幅波动,电解槽依然可以维持在稳定状态,从而保证在消纳风电过程中,电解槽内磁流体的稳定性,为其平稳消纳提供先天条件。

Study on Electric-Magnetic Fields of Aluminum Electrolysis Cell for Wind Power Accommodation

Electric-magnetic model of aluminum electrolysis cell for wind power accommodation was established based on current situation of nonlinear changes in physical fields of aluminum reduction cells after wind power accommodation. Calculation of electric field and magnetic fields was carried out for different accommodation currents including 25%, 20%, 15%, 10% and 5% of design current. The results show that cell voltage and horizontal current density rise with increase of accommodation aptitude, with no change of overall electric field trend. Similar pattern appear in magnetic field. The maximum and average values of Bz rise, while magnetic field trend remains unchanged. Maintainace of cell in a stable MHD state will provide congenital conditions for wind power accommodation.