研究生: |
黃聖凱 Sheng-kai Huang |
---|---|
論文名稱: |
實現以IEC 61850通訊為基礎之微電網保護系統 Implementation of Protection Systems in Microgrids Based on IEC 61850 Communication |
指導教授: |
辜志承
Jyh-Cherng Gu |
口試委員: |
蒲冠志
Guan-Chih Pu 楊明達 Ming-Ta Yang 郭明哲 Ming-Tse Kuo |
學位類別: |
碩士 Master |
系所名稱: |
電資學院 - 電機工程系 Department of Electrical Engineering |
論文出版年: | 2013 |
畢業學年度: | 101 |
語文別: | 中文 |
論文頁數: | 128 |
中文關鍵詞: | 微電網 、故障診斷 、IEC 61850 、保護管理系統 |
外文關鍵詞: | Microgrid, Fault Diagnosis, IEC 61850, Protection Management System |
相關次數: | 點閱:494 下載:0 |
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現代電力系統隨著再生能源之發展與節能減碳之要求,將發展成既可操作於傳統的併網模式亦可運轉於微電網模式之架構。然此電網中可包含多種分散式電源,使得故障電流具備多向性。隨著電網運轉模式之不同,加上電網由分散式電源、負載及饋線所組成之拓樸結構具有多變之特性,將明顯衝擊傳統電網保護技術與策略。
本論文透過模糊理論,研究僅應用電流訊號特性於電網運轉於併網/微電網模式時相/接地短路故障之診斷,並結合IEC 61850通訊網路,建立電網保護管理系統(PMS)。PMS依據運轉模式及電網之拓樸結構,即時規劃過電流保護機制,本論文假設透過IEC 61850通訊網路各IED與PMS間可隨時互相傳遞系統結構及電驛最佳設定資訊,且IED與IED間亦可傳遞GOOSE訊息。最後以Matlab/Simulink建立模擬環境,驗證故障診斷準則與PMS之保護機制,透過模擬情境驗證可知,各IED皆可正確判斷故障電流方向並診斷故障,且對應之保護機制可快速且有效的將故障區域隔離。
Based upon the fast growing of renewable energy and the requirements of energy conservation and carbon reduction, modern power system not only can be operated in grid-connected mode but also will be capable of running in microgrid mode. Nowadays, several types of renewable resources have been widely introduced so that the fault current in the system may be in bi-directional. In addition, the topology of such a power system including renewable resources, distribution feeders, and customer loads may be changed anytime. It will obviously impact the traditional protection strategies.
This thesis applies Fuzzy Logic Algorithm (FLA) in currents signal characterization in order to identify the system phase/ground fault both in grid-connected and microgrid mode. Moreover, IEC 61850 communication network is introduced to implement a Protection Management System (PMS). The major function of PMS determines IED protection logic based on system configuration and operation mode. It is assumed that not only the system topology and relay setting information can freely be transmitted between IED and PMS, but also the GOOSE message can be broadcasted among IEDs. Finally, simulation system based on Matlab/Simulink environment is established in order to verify the fault diagnosis algorithms and PMS protection strategies. The simulation result shows that all of IEDs can exactly detect the direction of fault current and diagnose the fault. Furthermore, the proposed PMS protection strategies can effectively and quickly isolate the fault zone.
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