微電網非差動式保護策略之研究

The study on non-differential protection strategy of microgrid

吳昱蔚(Yu-Wei Wu)

指導教授 ： 許世哲 ； 陳士麟

中原大學/工學院/電機工程研究所/碩士(2013年)

https://doi.org/10.6840/cycu201300750

摘要

世界各國開始重視使用分散式電源，遂發展出微電網概念。根據Pike Research的預測，全球微電網的數量將由2010年的低於100個成長至2015年超過2000個。微電網的研究及建置，已出現蓬勃發展的趨勢。
微電網係由負載、分散式電源及儲能系統組成。透過適當的控制及電力電子技術，能與市電併或與孤島運轉。微電網具備增加再生能源發電滲透率、提高特定用戶供電可靠度與供電品質、降低輸電損失及災變時緊急供電等功能。
微電網的保護策略，是建置及推廣微電網的重要研究議題之一，目前雖然尚未見完善及符合經濟效益的方案，然而已有眾多文獻加以探討。
本論文針對微電網故障保護，提出一套適用的非差動式保護策略，根據核能研究所微電網故障電流特性，使用瞬時過電流電驛及時間延遲達成保護協調目的。進而探討微電網在分散式電源置於不同位置情況下的非差動式保護策略。

關鍵字

分散式電源 ； 孤島運轉 ； 滲透率 ； 微電網

並列摘要

Countries around the world began to pay attention to use distributed generation, then develop a microgrid concept. According to Pike Research forecasts, the number of worldwide microgrid will grow to over 2000 in 2015 from less than 100 in 2010. The research and construction of microgrid have been booming.
Microgrid which consists of distributed generations, energy storages and loads can operate under grid-connected or islanding mode through proper control methodologies and power electronic technologies. Microgrid can increase the penetration of renewable energy, enhance the reliability and power quality of customer, reduce transmission losses and provide emergency power.
Microgrid protection strategy is one of the critical issues of its research and development. Although an ideal and cost-effective solution is yet to see at present, however, numerous literatures have explored the possibilities.
This thesis is focused on micro-grid protection strategy. A proper non-differential protection methodology is designed. According to fault current characteristics measured from INER (Institute of Nuclear Energy Research) microgrid test bed, instantaneous over-current relay and time delay technique are used to achieve protection coordination. Furthermore, this method is explored to the microgrid of which distributed generations are placed at different locations.

並列關鍵字

分散式電源 ； 孤島運轉 ； 滲透率 ； 微電網

參考文獻

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[17] 林昱辰，直流微電網之電壓模擬與故障保護分析，碩士論文，電機工程學系，中原大學，民國100年。

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