本論文旨在評估未來台灣鐵路雙軌化、捷運化與提速對牽引變壓器容量與列車受電電壓之影響。研究範圍包括列車動態位置圖之模擬、標的系統日負載曲線估算與牽引電力系統電力潮流分析等論題。
本論文首先針對捷運與台鐵列車之牽引負載特性進行分析，藉由其供電架構與方式、牽引馬達的運轉特性與能源轉換效率關係，以及行車動態等資訊的了解與掌握，並透過軟體程式的開發，即得以模擬出台鐵東/西部標的系統之日負載曲線。並藉由模擬與實際量測比對，驗證其列車運轉特性符合未來需求。最後為考量未來列車班次與行駛速度的提升對牽引系統之影響，亦結合Simulink與牽引系統電力潮流程式分析牽引負載對其所連接電力系統之影響，其分析結果得以評估各時間點下，列車數量、車次、消耗功率、受電電壓與距離之關係，使得評估工作不再侷限於變壓器容量考量，而能觀察牽引負載對牽引系統影響之全貌。本論文研究結果可供國內外相關工程師執行相關軌道系統規劃、設計及運轉時之參考與運用。

The purpose of this thesis is to evaluate the effect of the capacity of traction substation and the supply voltage of trains after the railway system replacing to double tracks, boosting speed, and adding the train's shifts in the future. The simulation of train’s dynamic positions, Daily Load Curve evaluation of PU systems and the powerflow analysis of traction systems are included in the thesis.
To make the program in the software to simulate the Daily Load Curve of Eastern and Western PU system, this thesis analyzes the load’s characteristic of railway and MRT system by their voltage supplied structure, the way of motor operation, the relation of torque transfer to energy and timetable in the beginning. After simulation, comparing simulated values with the real measure values to make sure the train’s operational curve fit in the future. Consider to the effect that cause by the train shift increasing and boosting speed this thesis use the powerflow program along with Simulink to study the relation of voltage drops and traction loads from the simulation results in the last. The result could show the train number, power consumption and the relation of train’s position and voltage drops in any time that make the evaluation not only consider the capacity of traction substation but whether the voltage drops influence of load to traction system meet criterion. The study result could offer both at home and abroad engineers and consultants to execute rail system planning, designing, operating and be a reference.

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