臺灣博碩士論文加值系統

本論文的主要目的在探討電壓、電流不平衡率的定義。本研究首先蒐集目前國際上較常用的電壓、電流不平衡率定義，歸納整理出三種較具代表性，且已被普遍採用之電壓及電流不平衡率定義，並列舉數國之相關標準與規範加以比較與分析。接著探討各種不平衡率定義與電壓、電流之大小與相角以及線路損失之相對關係，藉以評估各種電壓、電流不平衡率定義之優、缺點及適用性。最後以一範例系統分析與比較三種不平衡率定義之差異，以佐證前述評估之結果。研究所得的結果有助於對各種電壓、電流不平衡率定義之正確認知，對日後研訂不平衡率相關標準與規範亦有助益。

The major purpose of this thesis is to examine the definitions of voltage unbalance factor. After carefully reviewing the related standards, research reports, journals and others, two types of definitions of voltage unbalance factor were found, one based on the magnitudes of phase voltages and the other on the symmetrical components of the phase voltage, and three common used definitions were detected. The relationship between these three definitions was explored in general and then the comparison between them was made according to their capability of evaluating the impact of the voltage unbalance, such as increment of system loss, interference of communication systems, malfunction of protective relays, etc. The advantages and disadvantages of these definitions can therefore be assessed based on the comparison results. Some unbalance cases were used to demonstrate the difference of them. The difference should be properly emphasized. The misuse of the definitions may lead to incorrect conclusions and increase significantly the investment cost of electric power engineering.

中文摘要I
英文摘要II
誌 謝III
圖表索引VI
第一章 緒論1
1.1 研究背景與動機1
1.2 研究方法2
1.3 研究貢獻3
1.4 論文架構3
第二章 電壓、電流不平衡率之定義與規範5
2.1 前言5
2.2 不平衡率之定義及其相關標準與規範6
2.3 電壓不平衡率定義之彙整與分類13
2.4電流不平衡率定義之彙整與分類15
2.5 本章結論17
第三章 各種不平衡率定義與三相電壓、電流大小及相角之關係19
3.1 前言19
3.2 三相電壓與各種電壓不平衡率定義之關係20
3.3 電壓不平衡率第一類與第二類定義之關係39
3.4 本章結論44
第四章 不平衡率定義與線路損失之關係46
4.1 前言46
4.2 輸電線的線路損失46
4.3 三相電壓不平衡對線路損失之影響50
4.4 三相電流不平衡對線路損失之影響59
4.5 本章結論69
第五章 應用分析與探討71
5.1 前言71
5.2 配電變壓器繞組連接法對配電系統不平衡之影響分析71
5.2.1 配電變壓器繞組連接法72
5.2.2 配電變壓器的數學模型與特性分析74
5.3 配電饋線上之電力電容器組事故對配電系統不平衡之影響分析81
5.3.1 電力電容器組的組成82
5.3.2 電力電容器組的連接方式82
5.3.3 數理分析83
5.3.4 範例饋線分析86
5.4 本章結論100
第六章 結論及未來研究方向102
6.1 結論102
6.2 未來研究方向103
參考文獻104
附 錄108
作者簡介116

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