數位式方向性過流電驛應用於輸電線路之最佳保護協調策略研究

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研究生：	徐鉉凱 SHYU - SHIEN KAI
論文名稱：	數位式方向性過流電驛應用於輸電線路之最佳保護協調策略研究 Digital Directional Overcurrent Relays Applied in the Optimal Protection of Transmission Lines of Coordination Strategy
指導教授：	辜志承 Jyh-Cherng Gu
口試委員:	吳有基 Yu-Chi Wu 陳在相 Tsai-Hsiang Chen 陳斌魁 Bin-Kwie Chen
學位類別：	碩士 Master
系所名稱：	電資學院 - 電機工程系 Department of Electrical Engineering
論文出版年：	2012
畢業學年度：	100
語文別：	中文
論文頁數：	110
中文關鍵詞：	線路保護、保護協調、線性規劃、大M 法
外文關鍵詞：	Line Protection, Protection Coordination, Linear Programming, Big M Method
相關次數：	點閱：259 下載：6
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方向性過流電驛廣泛應用於多電源復雜迴圈網路。其於協調過程中，因考量系統多變化與符合繁多的協調規範與限制，電驛工程師往往花費大量的時間計算其電驛標置設定。本論文針對方向性過電流電驛最佳標置設定提出一整套方法以求解於不同網路中之標置設定。提出基於大容量供給電源所在位置圖形理論演算法，決定出電驛協調起始點。次者提出改良主/後衛保護電驛對順序決定，可清楚幫助電驛工程師清楚電驛主/後衛關係。最後應用線性規劃法中大M法於最大故障電流中求出電驛最佳時間標置設定。經由研究結果證實所以出之策略於完全符合所有限制條件，可幫助電驛工程師快速且準確的完成方向性過流電驛協調。

Directional overcurrent relays are widely used in power complex loop network. Coordination process, consider the network system change and to meet the variety of coordination norms and restrictions, the relay engineers often spend a lot of time to calculate the power relay standard configuration settings. This thesis focuses on the directional over current relay to the optimal settings a comprehensive set of methods to solve the optimal settings in different networks. The graph theory algorithms based on the high-capacity power supply are proposed, to decided the coordination starting point of relay. Secondly, by the new main / backup protective relays pairs decision method, it can help relay engineer to understand the relay relationship between the main / backup relays. Big M method for the maximum fault current in the final application of linear programming method find the best time dial of relay settings. Through the results confirm a strategy to fully comply with all restrictions can help relay engineers to quickly and accurately complete the directional overcurrent relay coordination.

摘要	I
Abstract	II
誌謝	III
圖表索引	IV
第一章	 緒論
1 研究背景	1
2 研究動機	2
3 章節概要	3
第二章	 應用 IED於輸電線路之保護
1 前言	5
2台灣供電系統概述	6
3 輸電線路之保護方式	7
3.1 345kV輸電線路	8
3.2 161kV輸電線路	9
3.3 69kV輸電線路	10
4 線路保護電驛系統分類	11
4.1 數位式差電流保護電驛	11
4.2 測距電驛	16
4.3 數位式SEL-311L POTT保護原理	18
          2.4.3.1 POTT動作原理說明	19
          2.4.3.2 POTT於電流逆轉保護之應用	20
4.4 瞬時過流保護電驛	22
4.5 延時過流及方向性過流保護電驛	23
5 方向性過流電驛之保護協調	28
5.1 方向性過電流電驛標置原則	28
6 本章小結	30
第三章  方向性過流電驛設定值最佳化之探討
1 前言	31
2 電驛斷點集之決定	32
2.1 傳統圖形理論法	33
2.2 動態矩陣理論法	35
2.3 改良圖形理論法	39
2.3.1網路分解(Network Decomposition)定理	39
          3.2.3.2 網路簡化(Network Reduction)	40
3 電驛對演算法	44
3.1 匯流排增廣矩陣之建立	44
3.2 傳統式主/後衛保護電驛對之決定	45
3.3 改良式主/後衛保護電驛對之決定	46
4 線性規劃法之應用	49
4.1 線性規劃基本原理	49
4.2 問題陳述與限制條件設定	50
4.3 大M法介紹與實現	52
5 本章小結	60
第四章  範例系統電腦模型之建立
1 前言	61
2 系統模型之建立	61
2.1開新檔案與圖檔建置	61
2.2 匯流排(Bus)模型建立	63
2.3 發電機(Generator)模型建立與設定	63
2.4 變壓器(Transformer)模型建立與設定	64
2.5 輸電線路模型與建立	65
3 比流器匝比設定	67
4 方向性過流電驛參數設定	68
5 應用ASPEN於保護協調之驗證	70
6 本章小結	72
  第五章 案例分析與討論
1前言	73
2 IEEE-6 Buses範例系統(應用IEC曲線)	73
2.1 改良圖型理論法應用	73
2.2 改良式主/後衛電驛對之決定	75
2.3 大M法應用於保護協調理論	77
2.4 主/後衛電驛動作時間之計算	80
2.5 保護協調曲線之驗證	81
3台電範例系統(應用US曲線)	83
3.1 改良圖型理論法應用	83
3.2 改良式主/後衛電驛對之決定	84
3.3大M法應用於保護協調理論	86
3.4主/後衛電驛動作時間之計算	89
3.5保護協調曲線之驗證	91
4本章小結	92
第六章 結論與未來研究方向
1 結論	93
2未來研究方向	94
參考文獻	95
附錄一	100
附錄二	101
附錄三	104
附錄四	108

                                

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