微電網保護電驛演算法之發展

Development of Microgrid Protection Relay Algorithm

施柏安(Po-An Shih)

指導教授 ： 陳士麟

中原大學/工學院/電機工程研究所/碩士(2012年)

https://doi.org/10.6840/cycu201300930

摘要

本文旨在開發一套適用於微電網的保護方法，並以核研所微電網為測試平台，測試這套保護方法。
本方法考量微電網的右列兩個特性：(1)為發揮分散式電源的功能，微電網具有分區架構，在微電網發生故障後，網內的非故障區遂可作分區獨立之持續運轉；(2)由於微電網內設置高比例之不可調度電源，網內的電力潮流分佈遂經常作大幅度的變化。
為因應此二特性，本研究所設計的保護系統遂具備可擴充性與可適應性的能力，亦即：本保護系統的電驛架構與電驛設定可因應微電網之分區獨立運轉(可擴充性)與分散式電源出力之大幅變化(可適應性)。本研究試圖發展此保護系統俾適用於包括核能研究所(INER)微電網的380V多重接地系統，並測試此保護系統在微電網架構改變以及分散式電源出力大幅變化之下，不需人工作業而能夠自動修正電驛設定俾偵測與隔離故障，亦即測試本系統的故障偵測與故障隔離以及本保護系統的可擴充性與可適應性能力。本文說明本電驛方法於核研所微電網所進行的人工故障試驗以及對於電驛演算法之測試結果。

關鍵字

故障偵測演算法、微電網、人工故障試驗

並列摘要

This study intends to develop a protection method for microgrid , and test the method on the INER microgrid.
Two characteristics of microgrid are to be evaluated for the design of the protection method：(1)microgrid is configured with a series of zones , each made up with distributed generation sources and load；thus , after isolating the faulted zones , the remaining unfaulted zones is various combinations can continue to operate；(2)due to the high percentage of non-dispatchable generation sources , the distribution of power flow can vary constantly and dramatically.
To cope with these two characteristics , the protection method proposed here can thus have to comprise of the scalability and adatability capabilities , i.e., the protection configuration and the relay setting can meet with the microgrid operation under various zone combinations (referred to as scalability) and under the dramatic change of power flow (called adatability). In this study,the author is going to develop the protection method for applicable to the 380V multi-grounded type of microgrid such as INER,and test to the scalability and the adaptability proposed of protection method , more clearly , to ensure that the protection system be able to adjust the relay settings automatically after the reconfiguration of microgrid and under the dramatic variation of power flow. In the theis,the relay algorithm and the results of stage fault conducted on the INER microgrid as well as the algorithm test results are presented.

並列關鍵字

Stage Fault Test ； Microgrid ； Fault Detection Algorithm

參考文獻

[5]陳彥霖，低壓微電網保護系統設計，碩士論文，中原大學電機工程研究所，民國101年。

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[3]D. Coll-Mayor, M. Paget and E. Lightner, "Future Intelligent Power Grids: Analysis of The Vision in The European Union and The United States", Energy Policy, Volume35, Issue 4, April 2007, pp.2453-2465.

[4]H. Nikkhajoei and R. H. Lasseter, “Microgrid Protection”, Power Engineering Society General Meeting, Tampa, FL, June 2007, pp.1-6

[6]H. AL-Nasseri, M. A-Redferm and R. O-Gorman, “Protecting Micro-grid Systems containing Solid-State Converter Generation”, IEEE Power Electronics Conference, March 2005.