CAJ | 학술논문

针对高速铁路动车组通过高架桥上过分相段的复杂电磁暂态过程，本文进行了过分相段暂态状态过程求解和评估。首先分析了过分相过电压过程及机理；然后建立了计及高架桥电气耦合的高速铁路过分相段的集中参数等值电路模型；其次对计及高架桥电气耦合的过电分相段中出现的4个暂态过程建立状态方程，求解得出过分相动车组弓头电压每个暂态过程的全响应波形，并评估了不同暂态过程和电气参数耦合对状态变量的影响；最后仿真对比分析了计及桥梁回路耦合与不考虑桥梁回路电气耦合时的过电分相全过程，计算和仿真结果验证了高架桥回路对过分相过电压有明显的泄流和抑制作用。
침대고속철로동차조통과고가교상과분상단적복잡전자잠태과정，본문진행료과분상단잠태상태과정구해화평고。수선분석료과분상과전압과정급궤리；연후건립료계급고가교전기우합적고속철로과분상단적집중삼수등치전로모형；기차대계급고가교전기우합적과전분상단중출현적4개잠태과정건립상태방정，구해득출과분상동차조궁두전압매개잠태과정적전향응파형，병평고료불동잠태과정화전기삼수우합대상태변량적영향；최후방진대비분석료계급교량회로우합여불고필교량회로전기우합시적과전분상전과정，계산화방진결과험증료고가교회로대과분상과전압유명현적설류화억제작용。
To address the complex electromagnetic transient process for electric multiple unit (EMU)passing phase insulator on the viaduct of high-speed railway,the paper solved and evaluated the transient state process in detail.Firstly,the transient processes of EMU passing phase insulator and the generating mechanism of transient over-voltage were analyzed.Next,considering electrical coupling role of viaduct,the paper built e-quivalent circuit model based on lumped parameter related to phase insulator of high speed railway.Subse-quently,the state equation of four transient processes in EMU passing phase insulator on the viaduct was es-tablished respectively,which was utilized to solve and obtain the waveform of the full response voltage on the pantograph.Further,the influences of different transient processes and electric parameters on the state varia-bles were analyzed.Finally,through simulation,the paper compared and analyzed pantograph head's voltage waveform in the total process of EMU passing electric split-phase in the case of considering or not considering electrical coupling of the viaduct.Calculation and simulation results revealed the discharge and suppression of the electrical coupling of virduct on over-voltage when EMU passes neutral section.