本論文旨在探討「三相四線式配電系統之精確分析技術及二次配電系統再生能源發電之允許最大併網量」。首先，彙整並探討台灣一、二次配電系統之架構及現行國內外再生能源發電之發展趨勢與併網規範，作為本論文研究之參考與立論基礎。續之，利用商用套裝模擬軟體Matlab/Simulink建立配電系統主要元件數學模型，並予以驗證，且開發一精確配電系統分析程式，俾進行三相四線式配電系統之精確效能分析及二次配電系統再生能源發電之允許最大併網量研究。
中性線與接地阻抗之影響、配電饋線及電力變壓器各相導體間及與中性線間之互感在本論文研究所開發之程式中均可被充分納入考量。除此之外，不論是單相或是三相再生能源發電對配電系統之影響均可被準確的模擬出來。最後，在考慮現行併網法規及系統限制條件下，利用Matlab/Simulink建立範例配電系統全尺度數學模型，及結合最佳化分析程式Optimus中求解單目標最佳化之方法，模擬與分析各種配電變壓器結線方式之效能及再生能源發電之允許最大併網量。研究結果可作為未來系統規劃設計或擴充升級及再生能源發電併網分析與管制之參考與應用。

This study aims to deal with “Accurate Analytical Technology for Three-Phase Four-Wire Distribution System and the Maximum Allowable Capacity of Renewable Energy for Secondary Distribution System”. First of all, this study integrates and explores the framework of Taiwan’s primary and secondary distribution system and the current trends of renewable energy and regulations of grid domestically and abroad, which can serve as the reference and foundation for this research. Moreover, this study adopts the commercial software – Matlab/Simulink to establish the mathematical model of major components for distribution system and make this model verified. After verification, we develop a set of accurate analytical programs to facilitate the accurate performance analyses of three-phase four-wire distribution system and the maximum allowable capacity of renewable energy for secondary distribution system.
In this system, the impacts of the neutral wire and ground impedance, the mutual among the phase conductors and neutral wires of feeders and power transformers in programs developed by this study will be fully taken into consideration. Besides, the influence of the renewable generation on distribution system regardless of single phase or three phase will be simulated accurately. Finally, thinking about the laws of grid and limitations of system, this study makes use of Matlab/Simulink to construct the full-scale mathematical model of paradigm distribution system and combine the optimal program – Optimus to solve the approach – single objective optimization to simulate and analyze the performance of the connection type of all kinds of power transformers and the maximum allowable capacity of renewable energy. Finally, results can serve as the reference and application for the system design or upgrading and analyses and control of distribution power grid in the future.

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