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博碩士論文 etd-0708109-163357 詳細資訊
Title page for etd-0708109-163357
論文名稱
Title
應用類神經網路於配電自動化線路開關之規劃
Line Switch Unit Commitment for Distribution Automation Systems Using Neural Networks
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
99
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
2009-06-30
繳交日期
Date of Submission
2009-07-08
關鍵字
Keywords
none
Unit Commitment, Line Switch, DAS Systems, Neural Networks
統計
Statistics
本論文已被瀏覽 5848 次,被下載 16
The thesis/dissertation has been browsed 5848 times, has been downloaded 16 times.
中文摘要
none
Abstract
To enhance the cost effectiveness of the distribution automation system (DAS), this thesis proposes the Artificial Neural Networks (ANNs) to derive the Line Switch Unit Commitment by minimizing the total cost of customer service outage and investment cost of line switches. A brief introduction of the smart grids and the DAS implemented by Taipower is described. The customer interruption cost is determined according to the customer type, loading, outage frequency and number of automated line switches in the feeder. The ANNs models were created for a radial feeder and an open tie feeder, and then implemented with the load growth in order to determine the year for the next line switch to be added. The neural network model for the line switch unit commitment is derived after performing the training using MATLAB/Neural Network Toolbox. A sensitivity analysis of the impacts of the loading and the outage frequency in the line switch unit commitment is studied in this thesis and a comparison between the radial feeder and the open tie feeder is also shown in the results.
After the creation of the neural network model for the two types of feeder topology, we implement the model to determine the unit commitment of line switches for two Panamanian distribution feeders. The results of computer simulation show how many automatic line switches should be installed on the feeder for the first year and in which year the line switch should be added. It is found that the total cost function of customer outage and line switch investment can be minimized by considering the load growth of distribution feeders over the study period.
目次 Table of Contents
ABSTRACT i
TABLE OF CONTENTS iii
LIST OF FIGURES vi
LIST OF TABLES ix

CHAPTER 1 INTRODUCTION AND THESIS OUTLINE 1
1.1 Introduction 1
1.2 Thesis Outline 3
CHAPTER 2 THE SMART GRID AND DISTRIBUTION AUTOMATION SYSTEMS 4
2.1 The Smart Grid 4
2.1.1 Driving Factors to Move Towards Smart Grids 5
2.1.2 Traditional Power Grids 6
2.1.3 Future Power Grids 7
2.2 Distribution Automation System in Taipower 10
2.2.1 Benefits of the DAS Implementation 11
2.2.2 Functions of Distribution Automation Systems in Taipower 12
2.2.3 Real Time Database 13
2.3 DAS System Configuration 15
2.4 Existing Approaches to Implement Distribution Automation 16
2.4.1 The Semi-automatic Approach 16
2.4.2 The Distributed Approach 19
2.4.3 The Centralized Approach 19

CHAPTER 3 RELIABILITY AND ECONOMIC CONSIDERATIONS 21
3.1 Reliability 22
3.2 Reliability Indices 24
3.2.1 Customer Based Reliability Indices 25
3.2.2 Load Based Reliability Indices 27
3.3 Reliability Cost and Reliability Worth 28
3.4 Formulation of the Objective Function 29
3.4.1 Case A. Radial Feeder 31
3.4.2 Case B. Radial Feeder with an Open tie Switch for Back up 33
CHAPTER 4 ARTIFICIAL NEURAL NETWORK 35
4.1 Applications of Neural Networks 36
4.2 Neuron Model 37
4.2.1 Single Input Neuron 38
4.2.2 Multiple Input Neuron 41
4.3 Network Architectures 41
4.3.1 Single Layer Networks 42
4.3.2 Multiple Layer Networks 43
4.4 Training the Weights 45
4.5 Backpropagation and Differentiation 46
4.6 Neural Network Training and its Implementation with the Load Forecast 48
4.6.1 Artificial Neural Network for a Radial Feeder 49
4.6.2 Neural Network for a Radial Feeder with an Open tie Switch for Back up 56
CHAPTER 5 CASE STUDIES OF PANAMANIAN DISTRIBUTION FEEDERS 63
5.1 Origin of the Panamanian Power System 63
5.2 Privatization of the Panamanian Power System 65
5.3 Current Structure of the Panamanian Power System 66
5.3.1 Generation 66
5.3.2 Distribution 67
5.3.3 Retail Sales 67
5.3.4 Transmission 68
5.3.5 System Operation 68
5.3.6 Market Operation 68
5.3.7 Regulatory Institution 69
5.4 Feeders Used for Study 69
5.4.1 Case A: Feeder 8-64 70
5.4.2 Case B: Feeder 5-45 74
CHAPTER 6 CONCLUSION AND FUTURE WORKS 79
6.1 Conclusion 79
6.2 Future works 80
REFERENCES 81
參考文獻 References
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[23] R. Perez-Franco; “The Panamanian Power System” MIT 2003.
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[26] C.S. Chen, J.S. Wu and Y.N. Chang, “Criteria of Inter-feeder Switching in Distribution Systems,” IEEE Proceedings, Vol. 135, No. 5, pp. 461-467, July 1988.
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