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博碩士論文 etd-0706101-112612 詳細資訊
Title page for etd-0706101-112612
論文名稱
Title
台電負載特性之研究及其對電力系統運轉之影響
The Study of Load Characteristics in Taipower and Its Effect on Power System Operation
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
135
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2001-06-22
繳交日期
Date of Submission
2001-07-06
關鍵字
Keywords
負載特性調查、分層隨機抽樣法、負載組成、卡方檢定法、隨機負載潮流分析、溫度敏感度、溫度適應性開關操作
temperature sensitivity, chi-square test, load survey, load composition, stratified sampling, temperature adaptived switching operation, stochastic load flow analysis
統計
Statistics
本論文已被瀏覽 5758 次,被下載 4781
The thesis/dissertation has been browsed 5758 times, has been downloaded 4781 times.
中文摘要
本論文以負載特性調查為基礎,應用統計學分層隨機抽樣法,選擇1315戶各類型具代表性用戶,於現場裝置智慧型電錶,量測用戶逐年每十五分鐘耗電資料。根據統計學卡方檢定法則檢測異常資料存在,用戶耗電異常資料經適當處理後,建立用戶負載資料庫。以負載單元平均法推導各類型用戶標準化日負載模型,配合各類型用戶售電資料,推估各類型用戶日負載模型。統計加總調查區處所有各類型用戶日負載模型,配合台電系統各類型用戶售電資料,推導台電系統日負載組成及日負載模型,分析各類型用戶對系統尖峰負載貢獻度,依使用者付費原則,提供費率單位訂定合理公平電價結構之參考依據。
夏季高溫常是造成台電系統尖離峰負載差距擴大及配電系統主變壓器過載運轉之主因,因此本論文依相關性分析法,決定用戶用電量與氣溫之相關程度。同時利用統計學複迴歸分析法,擬合用戶用電量與溫度複迴歸模型,推導各類型用戶溫度敏感度。為展示溫度變化對配電系統運轉之衝擊,依用戶溫度敏感度及其負載組成,計算配電饋線負載匯流排負載變化量,及不同溫度下配電饋線負載量與饋線實功損失。
為解決都會區夏季配電饋線及主變壓器過載運轉問題,本論文提出配電系統溫度適應性開關操作。藉由開關操作進行饋線間與主變壓器間不停電負載轉供,將溫升所造成之負載變化量平均分配至各饋線間。考慮溫度效應對變電所耗電的影響,建立台電系統直流電路模型,進行隨機負載潮流分析。結果發現在夏季尖峰負載時段,由於傳輸線大量的電力傳輸,將造成電力系統匯流排間電壓相角差有顯著變化,提供系統運轉安全裕度之評估參考。
Abstract
Based on the load survey study, a stratified sampling method is proposed to select the proper size of customers so that the load patterns derived can represent the load behavior of whole customer population. In this study there are 1315 customers out of Taipower customers over various service classes are selected for the installation of intelligent meters in the field to measure the power consumption within every 15 minutes. The bad data detection is performed to identify the abnormal power consumption by executing the Chi-square test. The standardized daily load pattern of each customer class has been derived with the mean per-unit method of customer load. The billing data are retrieved from the customer information system and applied to derive the customer daily load pattern by considering the customer load patterns. According to the total power consumption by all customers within the same class and considering the corresponding daily load pattern, the daily load profile of the customer class is then determined. By aggregating the load profiles of all customer classes, the daily load composition and load model of each service district can therefore be solved. By the same manner, the daily load pattern of whole Taipower system can be derived and it can be used to support the proper design of tariff structure according to the respective contribution of system power demand by each customer class.
To investigate the overloading of distribution main transformers during the summer season, the correlations analysis of customer power consumption and temperature is performed. The effect of temperature change to the power consumption of each customer class is solved by multiple regression analysis with 95% confidential level. Based on the temperature sensitivity and the corresponding load composition, the load change due to temperature rise for various customer classes can be estimated. To demonstrate the impact of temperature change to distribution system operation, considering the temperature sensitivity of power consumption and load composition solves the power demand at each load bus. By updating the bus load demand due to temperature change, the feeder loading and power loss is therefore derived. To resolve the over loading problem of distribution feeders and main transformers during the summer season, a temperature adaptive switching operation has been proposed to perform the proper load transfer among the feeders/main transformers.
In this dissertation, the effect of temperature change to the time varying characteristics of load buses and power transmission in Taipower is investigated. The dc circuit model of Taipower system and the temperature effect of customer power consumption are considered in the stochastic load flow analysis. With the temperature rise, the power demand of northern buses is increased dramatically and more power has to be transmitted from the southern region. The large voltage angle difference is significantly various between system buses during the summer peak period. It is suggested that the safety margin assessment of system operation has to be executed by considering the temperature effect to the bus loading of power systems.
目次 Table of Contents
中文摘要……………………………………….…………………………. I
英文摘要………………………………………………….………………. II
目錄…………………...…………………………….…….………………. IV
圖目錄……………………………………………….……………………. VII
表目錄……………………………………………….……………………. X
第一章 緒論…………………………………………….………………. 1
1-1研究背景及目的….…………………………………….……….. 1
1-2研究方法與步驟….…………………………………….……….. 9
1-3論文章節概要….……………………………………….……….. 12
1-4主要貢獻….…………………………………………….……….. 14
第二章 負載特性調查研究……………………….……………………. 15
2-1前言….…………………………………………………………... 15
2-2抽樣調查……………………………………………………..….. 16
2-2-1主成份分析………………………………………………. 17
2-2-2群集分析…………………………………………………. 21
2-2-3紐曼分層隨機抽樣………………………………………. 24
2-3台電系統分層隨機抽樣………………………………………… 26
2-4異常資料處理…………………………………………………… 29
2-5本章結論…………………...………………………….………… 33
第三章 負載模型及負載組成推導…………………………..………… 34
3-1前言…………………..…………………………………………. 34
3-2各類型用戶標準化日負載模型推導……..……………………. 34
3-3區處日負載組成及負載模型推導……..………………...…….. 40
3-4台電系統日負載組成及負載模型推導…..…………...……….. 45
3-4-1台電系統日負載組成分析………………………...……. 45
3-4-2台電系統尖峰負載日負載組成分析……………...……. 50
3-5本章結論……………………………..……….……...…………. 54
第四章 負載溫度敏感度分析…………………………..……….…….. 56
4-1前言.……………………………………………..………….…... 56
4-2負載與溫度之相關性分析與迴歸分析…………..……….…… 56
4-3用戶溫度敏感度分析..………………………….………..…….. 64
4-3-1區處各類型用戶溫度敏感度..…………………..…..….. 64
4-3-2台電系統各類型用戶溫度敏感度..………….…...…….. 69
4-4區處負載組成之溫度效應…………………….……..………… 70
4-5台電系統負載組成之溫度效應……………….…………..…… 75
4-6本章結論…………………………………….……..…………… 82
第五章 溫度效應對輸配電系統運轉之影響………………..………... 84
5-1前言…………………..…………………………………………. 84
5-2溫度效應對配電饋線負載量及實功損失影響分析…….....….. 85
5-2-1問題描述…………………………………………………. 85
5-2-2配電饋線負載匯流排負載組成………………...………. 86
5-2-3各類型用戶溫度敏感度………………………...………. 88
5-2-4模擬分析………………………………………...………. 89
5-3配電系統溫度適應性開關操作……..…………………...…….. 94
5-3-1問題描述…………………………………………...……. 94
5-3-2饋線開關區段溫升負載變化量……………...…………. 97
5-3-3以二元整數規劃法求解饋線開關最佳操作問題…...…. 98
5-3-4溫度適應性最佳開關操作………………………………. 100
5-3-5配電系統開關操作模擬…………………………....……. 104
5-4本章結論…………………………………………..…………….. 112
第六章 考慮溫度效應之電力系統隨機負載潮流分析….….………… 113
6-1前言…………………..……………………………..……..……. 113
6-2問題描述……..………………………………………………….. 113
6-3隨機負載潮流…………………………………..……...…….….. 116
6-3-1隨機負載模型…………………………………...………. 116
6-3-2隨機負載潮流分析……………………………...………. 117
6-4實例研究……..………………………………………………….. 118
6-5本章結論…………………………………………..…………….. 126
第七章 結論與未來研究方向…………….……………….…………… 127
7-1結論…………………..………………………..…..……………. 127
7-2未來研究方向……..…………………………………………….. 131
參考文獻 …………….…………………………………….…………… 132
作者簡歷 …………….…………………………………….…………… 135
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