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研究生:周宥均
研究生(外文):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
論文名稱(外文):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
指導教授(外文):Yi-Yu Liu
口試委員:劉一宇謝仁偉陳勇志方劭云吳坤熹
口試委員(外文):Yi-Yu LiuJen-Wei HsiehYung-Chih ChenShao-Yun FangQuin-Cy Wu
口試日期:2019-07-04
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:資訊工程系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
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 GridIEC 61850ModbusMMSBidirectional Controller
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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
[1] Tetsuo Soga, Nanostructured Materials for Solar Energy Conversion, 1st ed.
Amsterdam:Elsevier, 2006, ch1.
[2] John D. McDonald, Electric Power Substation Engineering, Boca Raton: CRC
Press, 2003, ch5.
[3] Maria van der Hoeven, The Power of Transformation - Wind, Sun and the
Economics of Flexible Power Systems, France: International Energy Agency,
2014.
[4] Communication networks and systems in substations - Part 5: Communication
Requirements for Functions and Device Models. IEC 61850-5, 2003.
[5] Communication networks and systems in substations - Part 4: Basic communication structure for substation and feeder equipment Compatible logical node
classes and data classes. IEC 61850-7-4, 2003.
[6] Zhang Kejia (2013, Jul.).The Functional Frame and Design Principles of Smart
Substation, Electrical Engineering—Electr Eng.
[7] Maxim Integrated. (2001, Nov 19). RS-485 (EIA/TIA-485) Differential Data Transmission System Basics [Online]. Available:
https://www.maximintegrated.com/en/app-notes/index.mvp/id/736
[8] Modbus Organization, ”MODBUS Application Protocol Specification v1.1,”
2012.
[9] Juan Bester, ”SimpleModbus,” 2012.
[10] OMICRON, ”IEDScout”.
[11] Billion Watts. The Expert of Solar Monitoring Systems — Welcome to BillionWatts Technologies [Online]. Available: https://billionwatts.com.tw/en
[12] Controlnet International Controlnet International [Online]. Available:
http://www.connet.com.tw/en/
[13] MOXA MOXA - Total Solution for Industrial Device Networking [Online].
Available: https://www.moxa.com.tw/
[14] ProSoft ProSoft Technology Inc IIOT connectivity starts with ProSoft [Online].
Available: https://www.prosoft-technology.com
[15] Acer Acer [Online]. Available: https://www.acer.com/ac/en/US/content/home
[16] Raspberry Pi Teach, Learn, and Make with Raspberry Pi Raspberry Pi [Online].
Available: https://www.raspberrypi.org/
[17] Maxim Integrated Maxim Integrated - Analog, linear, & mixed-signal devices
[Online]. Available: https://www.maximintegrated.com/en.html
[18] WhatsNext What’s Next Board Shields [Online]. Available:
https://whatsnext.shop/shop/index.html
[19] National Energy Program - Phase II Taiwan National Energy Program - Phase
II Available: http://www.nepii.tw/language/zh/home/
[20] Michael Zillgith, ”libIEC61850/lib60870-5”.
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