直流微電網之電壓模擬與故障保護分析

Voltage Simulation and Fault Protection Analysis of a DC Microgrid

林昱辰(Yu-Chen Lin)

指導教授 ： 陳士麟

中原大學/工學院/電機工程研究所/碩士(2011年)

https://doi.org/10.6840/cycu201100488

摘要

根據行政院最近通過的「智慧型電動車發展策略與行動方案」，預計七年內投入138.77億元，從示範運行、技術研發和推廣三大方向，全力發展智慧電動車，中山科學研究院二所遂進行研究，開發以再生能源為核心之車載電源系統。本文遂根據中科院所建置的微電網儲能車，檢視該直流型微電網的保護系統，提出的建議有助於微電網保護協調之規劃、分析，也有助於未來在儲能車的建置及發展。此直流微電網內的元件包含再生能源、儲能設備、負載、電纜線以及充電器/換流器。本文使用MATLAB軟體針對此直流微電網系統進行模擬，計算各匯流排電壓值。另進行故障分析，先分析再生能源的短路狀況，並估算各故障點故障電流值，再根據負載電流與故障電流檢討現行的保護系統設定，提出修正後的保護參數。

關鍵字

微電網元件 ； 故障保護分析 ； 直流微電網 ； 電壓模擬

並列摘要

According to the Development Strategy and Action Plan of Smart Battery Electric Vehicles recently adopted by the Executive Yuan, an amount of NTD13,8770,0000 is expected to be invested in seven years. Fully developed through demonstration operation, technology research and development, and promotion, smart battery vehicles are then researched by the Chung Shan Institute of Science and Technology (CSIST) and developed into a power system that uses renewable energy as its core. Then, according to the microgrid energy-storage vehicle established by the CSIST, the protection system of DC microgrid is viewed and suggestions beneficial to the planning and analysis of microgrid protection coordination and to the establishment and development of energy storage vehicles in the future are proposed. The components within this DC microgrid include renewable energy, energy storage devices, load, cable and charger/converter. In this study, MATLAB software is applied to simulate this DC microgrid system and to calculate the bus voltage values. In addition, fault analysis is carried out to analyze the short circuits of renewable energy and estimate the fault current values of each fault. Furthermore, the protection system settings are reviewed according to the load current and fault current, and then the post-revision protection parameter is proposed.

並列關鍵字

Voltage Simulation ； DC Microgrid ； Fault Protection Analysis ； Microgrid Component

參考文獻

[2] B. Kroposki, T. Basso, R. DeBlasio, “Microgrid Standards and Technologies“, Power and Energy Society General Meeting, pp. 1-4, July 2008.

[3] G. Venkataramanan, C. Marnay, A larger role for microgrids,Power and Energy Magazine, Volume 6, pp. 78-82, May-June 2008.

[6] H. Kakigano, M. Nomura, and T. Ise, “Loss evaluation of DC distribution for residential houses compared with AC system,” in Proc. Int. Power Electron. Conf. (IPEC)-ECCE Asia, Sapporo, Japan, 2010, pp. 480–486.

[7] Hiroaki Kakigano, Yushi Miura, and Toshifumi Ise, “Low-Voltage Bipolar-Type DC Microgrid for Super High Quality Distribution,” Power Electronics, IEEE Transactions, Dec. 2010

[12] M. Sarvi and M. M. Barati,“Voltage and Current Based MPPT of Fuel Cells under Variable Temperature Conditions”, Universities Power Engineering Conference (UPEC), 2010 45th International , 31st Aug - 3rd Sept 2010