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研究生:許冠華
研究生(外文):Kuan-Hua Hsu
論文名稱:可攜式局部放電監測系統之研製
論文名稱(外文):Development of Portable Partial Discharge Monitoring Systems
指導教授:吳瑞南吳瑞南引用關係張建國張建國引用關係
指導教授(外文):Ruay-Nan WuChien-Kuo Chang
口試委員:張宏展謝宗煌楊念哲
口試委員(外文):Hong-Chan ChangTsung-Huang HsiehNien-che Yang
口試日期:2019-07-05
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:電機工程系
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:中文
論文頁數:98
中文關鍵詞:局部放電可攜式監測系統絕緣診斷機制
外文關鍵詞:partial dischargeportablemonitoring systeminsulation diagnosis rule
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我國逐漸以再生能源部分取代傳統能源做為發電的方式,以及空氣汙染等議題,導致電力系統供電緊塞,如遭遇電力設備非預期故障,將造成重大民生經濟的損失,其中又以 地下電纜之接續部分最常發生事故,針對電力設備絕緣維護診斷,國際間的研究已將局部放電視為觀察高壓設備絕緣情況好壞的指標。
本文提出可攜式局部放電監測系統,由量測單元、類比信號處理器、TMS320F28335數位信號處理器與可攜式電腦組成,由數位處理器控制類比信號處理器進行局部放電的量測,並將資料傳送至電腦進行特徵萃取、絕緣診斷、介面展示與資料儲存等功能。
本文以內含人工瑕疵的電纜接頭作為被試物,由本系統與另一套數位系統同時進行量測,以放電類型與放電現象進行比對驗證。藉由實際試驗數據搭配選定的絕緣診斷規則進行狀態診斷,提供現場人員評估維護措施。另一方面參考實際地下電纜接續狀況,提出以鍍錫銅線纏繞電纜接頭作為局部放電路徑,將量測方式進行調整,經由試驗證明該方法確實可行。
Our country has gradually replaced traditional energy sources with renewable energy as a means of generating electricity. In addition to air pollution and other issues cause power supply to be tight. In case of unexpected failure of power equipment, it will cause a major loss of people's livelihood economy. Among them, the most frequent accidents occur in the connection part of the underground cable. For the insulation maintenance diagnosis of power equipment, international research has regarded partial discharge as an indicator to observe the insulation of high-voltage equipment.
This paper proposes a portable partial discharge monitoring system consisting of a measuring unit, an analog signal processor, a TMS320F28335 digital signal processor and a portable computer. The digital processor controls the analog signal processor to perform partial discharge measurement. The data is transmitted to a computer for feature extraction, insulation diagnosis, interface display and data storage.
In this paper, using cable joints containing artificial defects as experiment object and measured by this system and another set of digital system at the same time. The discharge type and discharge phenomenon are compared and verified. The actual test data are combined with the selected insulation diagnosis rules for state diagnosis and provide on-site personnel assessment of maintenance measures. On the other hand, according to the actual underground cable connection, it is proposed to use a tinned copper wire to tie cable joints as a partial discharge path, and adjust the measurement mode. It has been proved by experiments that this method is indeed feasible.
摘要 I
ABSTRACT II
目錄 IV
圖目錄 VII
表目錄 XI
第1章、 緒論 1
1.1 研究背景與動機 1
1.2 研究目的與方法 4
1.3 章節簡述 7
第2章、 局部放電與高壓電力設備介紹 8
2.1 局部放電 8
2.1.1 局部放電定義 8
2.1.2 局部放電常用名詞 8
2.1.3 局部放電類型 9
2.2 電力設備 12
2.2.1 配電級高壓地下電纜 12
2.2.2 地下電纜接頭 14
2.2.3 電力電纜接頭與瑕疵說明 15
2.3 局部放電信號量測 17
2.4 局部放電信號處理 19
第3章、 可攜式局部放電監測系統 21
3.1 局部放電感測 23
3.1.1 電壓信號量測 23
3.1.2 局部放電脈衝量測 23
3.2 類比信號處理單元 24
3.2.1 電壓信號處理 25
3.2.2 局部放電信號處理 27
3.3 數位信號處理單元 33
3.4 數位信號處理器電路架構 34
3.5 可攜式系統 44
第4章、 系統軟體規劃 46
4.1 系統規劃 46
4.2 傳輸單元 50
4.3 特徵萃取與絕緣診斷規則介紹 53
4.4 人機介面 57
第5章、 系統整合測試 60
5.1 類比數位單元測試 60
5.2 DSP性能測試 66
5.3 實際電纜試驗 67
第6章、 結論及未來展望 77
6.1 結論 77
6.2 未來展望 78
參考文獻 79
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