本論文考慮配電系統裝置不同型態之分散式發電機組，探討配電系統形成孤島時，以分散式電源供應配電負載的暫態穩定度及運轉可行性。文中選擇台電系統之二次配電變電所為研究對象，建立系統中氣渦輪機與風力感應發電機之控制架構圖與相關發電機組、激磁系統、調速系統及葉片控制器之數學模型。然後，透過負載特性調查研究，了解配電饋線上住宅類型、商業類型及工業類型各類型用戶負載比例及主要用電設備，如馬達性負載、冷氣空調設備、照明設備、冷凍家電等設備之佔比，使用EPRI所推導之各類別用戶對電壓及頻率變動之靜態負載模型，配合感應電動機動態模型，以得到更接近實際系統響應分析。當含分散式電源之配電系統與台電供電系統解聯後，考慮氣渦輪發電機單獨運轉、風力發電機單獨運轉及二者同時併聯運轉等三種狀況，配合系統尖離峰之負載條件，執行電力孤島區域之暫態穩定度分析，並探討不同的卸載策略及發電機輸出控制對此獨立配電系統之響應。由模擬結果可得知不同的負載模型和卸載策略對此獨立系統暫態變化之影響，可作為未來分散式電源於配電系統之整體規劃，以有效提高電力供應之可靠度。

The purpose of thesis is to investigate the transient stability and operation feasibility of power islanding with different type of dispersed generation in distribution system. A substation of Taipower system is selected for case study to simulate the system transient stability. The mathematical models of dispersed generations including exciters, governors of gas turbine and pitch controller of wind-driven induction generator are used in the simulation program. To represent the load behavior more accurately, the load ratio of residence, commercial, industrial customer class and the composition of electric equipments in feeder, such as induction motors, air conditioners etc, have been identified through load survey study. The load models of end users are employed in simulation to solve the power consumption as function of bus voltage and system frequency. Besides, the dynamic model of induction motors is integrated to solve more accurate system power demand under transient condition. The simulation analysis of transient stability is executed for unbalance distribution system with dispersed generations of gas turbines and wind-driven turbines with three operations sceneries after the distribution system has been disconnected from Taipower system. Different load shedding schemes and output power control of dispersed generation are considered to maintain the stable operation of islanding power system. It is suggested that the system reliability of power system can be enhanced by the dispersed power generation with proper design of load shedding in the transient stability analysis.

中文摘要 Ⅰ
Abstract Ⅱ
目錄 Ⅲ
圖目錄 Ⅴ
表目錄 Ⅸ
第一章 緒論 1
1-1 研究背景與動機 1
1-2 研究概要與章節簡述 3
第二章 分散式電源 5
2-1 分散式電源對電力系統之影響 5
2-2 風力發電系統 9
2-3 氣渦輪發電機 21
第三章 電力系統暫態穩定度 26
3-1 暫態穩定度定義 26
3-2 暫態穩定度分析 28
3-2-1 建立系統模型 29
3-2-2 故障前系統穩態初值之計算 36
3-2-3 故障後系統動態之計算 37
3-3 電力系統卸載模式 39
第四章 負載組成與負載模型 42
4-1 負載特性調查 43
4-2 負載模式與組成推估 47
4-3 負載模型建立 53
4-3-1 EPRI靜態負載模型 54
4-3-2 馬達動態負載模型 65
第五章 配電孤島系統穩定度分析 67
5-1 系統架構 67
5-2 氣渦輪發電機單獨運轉 70
5-3 風力發電機組單獨運轉 77
5-4 氣渦輪機與風力發電機組同時運轉 88
第六章 結論 98
6-1 結論 98
6-2 未來之研究方向 99
參考文獻101

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