山东电力技术2025，Vol.52Issue(12)：92-101,10.DOI:10.20097/j.cnki.issn1007-9904.240443
考虑城轨杂散电流的主变压器隔直装置最优配置
Optimal Configuration of DC Blocking Devices for Main Transformers Considering Stray Currents in Urban Rail
摘要
Abstract
In response to the issue of uncertain overshoot of direct current magnetic bias(DCMB)in the main transformers of urban power gird,caused by random stray currents during dynamic operations of urban rail,an optimal configuration strategy of DC blocking devices for main transformers is proposed based on a multi-objective rime(MORIME)algorithm,which can effectively mitigate the DCMB phenomenon in the main transformers of urban power gird while minimizing the numbers of DC blocking devices installed.First,a multi-objective optimization is formulated for the optimal configuration model of the main transformer DC blocking devices,with the objective function of minimizing the DCMB current in the main transformer and reducing the number of capacitor-type DC blocking devices,and the constraint condition of limiting the DCMB current in the main transformer.The MORIME algorithm is then employed to solve this optimization problem.Next,Monte Carlo simulations are employed to address the uncertainty of the urban rail load currents,which are integrated into the solving process of the multi-objective optimization model.Lastly,the effectiveness and feasibility of the proposed method are demonstrated through a case study of the Shenzhen urban rail and city network coupled system.The results indicate that this configuration strategy not only effectively mitigates DCMB phenomenon of the main transformers but also achieves the installation of the minimum number of DC blocking devices.关键词
城轨/直流偏磁/随机负荷/隔直装置/多目标霜冰优化Key words
urban rail/direct current magnetic bias/stochastic load/DC blocking devices/multi-objective rime optimization分类
信息技术与安全科学引用本文复制引用
SONG Jingbo,CHEN Chen,QI Huanruo,ZHANG Jinfeng,XUE Wenjie,LIU Tongchui..考虑城轨杂散电流的主变压器隔直装置最优配置[J].山东电力技术,2025,52(12):92-101,10.基金项目
国网河南省电力公司科技项目(5217L024000W).Science and Technology Project of State Grid Henan Electric Power Company(5217L024000W). （5217L024000W）
