华侨大学学报(自然科学版)
華僑大學學報(自然科學版)
화교대학학보(자연과학판)
Journal of Huaqiao University (Natural Science)
2015年
6期
672-676
,共5页
廖延涛%张海龙%王恩荣%黄苗玉
廖延濤%張海龍%王恩榮%黃苗玉
료연도%장해룡%왕은영%황묘옥
电弧炉%电弧阻抗%电弧半径%负荷建模%电能质量
電弧爐%電弧阻抗%電弧半徑%負荷建模%電能質量
전호로%전호조항%전호반경%부하건모%전능질량
electrical arc furnace%arc impedance%arc radius%load modeling%power quality
基于能量守恒定律,建立一种以微分方程描述的新型交流电弧炉(EAF)时域模型。模型以电弧导纳作为状态变量,弧长和电流作为输入,引入时序变化的电弧半径作为参变量,并给出模型参数的估算方法。以实际炼钢交流电弧炉为例,建立电气系统仿真模型,对熔化期的电弧特性及电弧炉对电网的冲击响应进行仿真研究。结果表明:仿真得到的电弧伏安特性与实测数据吻合度较高,有功和无功冲击均与实际工况相符,验证了模型的准确性和实用性。
基于能量守恆定律,建立一種以微分方程描述的新型交流電弧爐(EAF)時域模型。模型以電弧導納作為狀態變量,弧長和電流作為輸入,引入時序變化的電弧半徑作為參變量,併給齣模型參數的估算方法。以實際煉鋼交流電弧爐為例,建立電氣繫統倣真模型,對鎔化期的電弧特性及電弧爐對電網的遲擊響應進行倣真研究。結果錶明:倣真得到的電弧伏安特性與實測數據吻閤度較高,有功和無功遲擊均與實際工況相符,驗證瞭模型的準確性和實用性。
기우능량수항정률,건립일충이미분방정묘술적신형교류전호로(EAF)시역모형。모형이전호도납작위상태변량,호장화전류작위수입,인입시서변화적전호반경작위삼변량,병급출모형삼수적고산방법。이실제련강교류전호로위례,건립전기계통방진모형,대용화기적전호특성급전호로대전망적충격향응진행방진연구。결과표명:방진득도적전호복안특성여실측수거문합도교고,유공화무공충격균여실제공황상부,험증료모형적준학성화실용성。
A novel time-domain differential model is proposed for the alternating current electrical arc furnace (EAF) based on the law of conservation energy.The model is established with arc admittance as a state variable,arc length and current as the input,respectively.The chronological arc radius is introduced as a parameter.In addition,the method to estimate the model parameters is given.Moreover,a real EAF is taken to establish the simulation model of the electrical system.The arc characteristics and the shock response of EAF on the power grid in smelting stage are simulated.The re-sults show that the simulated arc volt ampere characteristics are highly identical with actual measurement data,the active and reactive power shock are consistent with the actual working condition.It proves the accuracy and practicability of the proposed models.