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研究生: 周宥均
Yu-Chun Chou
論文名稱: 基於分散小型太陽能發電廠雙向數據採集與控制系統的設計與評估
Design and Evaluation of a Bidirectional Data Acquisition and Control System for Distributed Small-scale Solar Power Plants
指導教授: 劉一宇
Yi-Yu Liu
口試委員: 劉一宇
Yi-Yu Liu
謝仁偉
Jen-Wei Hsieh
陳勇志
Yung-Chih Chen
方劭云
Shao-Yun Fang
吳坤熹
Quin-Cy Wu
學位類別: 碩士
Master
系所名稱: 電資學院 - 資訊工程系
Department of Computer Science and Information Engineering
論文出版年: 2019
畢業學年度: 107
語文別: 英文
論文頁數: 37
中文關鍵詞: 智慧電網IEC 61850ModbusMMSSCADA
外文關鍵詞: Smart Grid, IEC 61850, Modbus, MMS, Bidirectional Controller
相關次數: 點閱:310下載:8
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  • 隨著全球暖化以及能源短缺的議題被重視,再生能源已成為世界上熱門的議題。由於臺灣地狹人稠的地理因素,太陽能發電廠的設置通常是小規模且分散的。因此,太陽能發電案場與中央監控和數據採集系統之間的通信起著電力系統的重要作用。然而,分散小型太陽能發電廠數據收集方式目前沒有標準協議,且對於在小型太陽能發電廠內架設國際標準協定成本太過於昂貴。因此,我們發明了一種低成本的雙向控制器,它不僅可以通過 HTTP POST,HTTPS API query 及TCP socket 等不同協議收集和匯總發電廠的數據。也可以通過 Modbus直接控制太陽能發電廠逆變器,並與 IEC 61850 服務器連接,實現控制功能。中央系統可以很容易地透過我們提出的架構去收集資料並預測發電狀況及快速調度電網中的電力。最後透過我們的實驗結果顯示,IEC 61850 伺服器的建置,不需要使用高階的硬體設備或很多的數量即可負荷整個電網。


    As global warming and energy shortages are gradually deteriorating, the issue of renewable energy has become a worldwide hot topic.
    In Taiwan, because of the narrowness of the ground which is highly populated, the setting of the solar power plants are small-scale and distributed.
    Therefore, communication between the solar power generation plants and the central monitoring and data acquisition system plays an important role in the power system.
    In order to solve the problem of distributed small-scale solar power plant data collection without standard protocols, the implementation of international standards for small-scale solar power plants is too expensive.
    In this thesis, we invent a low-cost bidirectional controller which collects and aggregates data from solar power plants by various protocols such as HTTP POST, HTTPS API query and TCP socket.
    In addition, the bidirectional controller is able to receive the control command from IEC 61850 server and then control the solar power plant inverters directly by using Modbus RTU protocol.
    By using the proposed bidirectional controller, the control center can easily collect data in order to predict power generation and quickly dispatch power in the grid.
    The overall hardware cost of our proposed system for each solar power plant is less than 20,000 NT dollars.
    Based on our stress tests, the IEC 61850 server can be built to load the entire power grid without using high-end hardware or a large number of servers.

    CHAPTER 1. Introduction 1 1.1 Introduction 1 1.2 Motivation 3 1.3 Contributions 4 1.4 Thesis Organization 5 CHAPTER 2. Preliminaries 6 2.1 Traditional Substation 6 2.2 IEC 61850 7 2.2.1 IEC 61850 Class Model 9 2.3 Modbus RTU via RS485 9 2.3.1 Transfer format of Modbus 10 2.3.2 RS485 11 CHAPTER 3. Bi-Directional Control System 13 3.1 Server Data Collection 13 3.2 Data Monitoring 14 3.3 Bidirectional Controller 14 3.3.1 Fetch Data from Inverter 15 3.3.2 Control Inverter via Modbus 15 3.4 Hardware Cost of Our System 17 CHAPTER 4. Experimental Results 18 CHAPTER 5. Conclusion 23 Bibliography 24

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