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題名 | 瓦斯斷路器啟閉頻率對絕緣氣體SF[feb8]純度之影響調查研究 |
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作者 | 林恆德; 陳耀武; 何立仁; | 書刊名 | 台電工程月刊 |
卷期 | 549 1994.05[民83.05] |
頁次 | 頁47-54 |
分類號 | 448.26 |
關鍵詞 | 瓦斯斷路器; 六氟化硫; 電弧; 氣體色層分析法; Gas circuit breaker; GCB; Sulfur hexafluoride; SF[feb8]; Arc; Gas chromatography; |
語文 | 中文(Chinese) |
中文摘要 | SF�艇侅肅_路是供電設備中一項重要的機器,其中內部啟斷時會發生電 弧現象,此高溫電弧將分解SF�艇侅結ㄔ秅戲悛哄A長時間之累積可能造成內部絕 緣及設備材質劣化現象。 台電公司使用SF�艇侅肅_路器已有十餘年,本文針對38KV,69KV,161KV,345KV四 種電壓等級,使用5年以上約一百多台之瓦斯斷路器施以瓦斯採樣分析,項目包 括空氣,CF�瓷ASOF�砥ASO�涌�砥AH�烙,SO�砥AHF等。再將所有不同成分之 分析結果與使用年數、操作次數、廠牌比較評估,結果顯示約有8之比例分析到 SOF�祟MSO�粉藺吨戲悛哄A其中尤以38KV GEC廠牌之瓦斯斷路器佔之比例最多 須加以追蹤分析。水分則都在150ppmv以下符合使用規定。而其中CF�異t量高於 400ppmv者以S&E廠牌佔大部份,須定期追蹤以防異常。結果顯示酸性分解物之 產生有隨操作次數增加而增加之趨勢。因此SF�艇侅竣尷R對於瓦斯斷路器內部可 提供初期故障指標,而作為設備維護的參考與保證供電的最佳品質。 |
英文摘要 | SFe-insulated gas circuit breaker (GCB) is one of the importantequipments in distribution system. In GCB, arc discharge occursaccompanying contact opening and this high temperature arc maycause subsequent decomposition of SFe gas. After considerablecycles of on-off operation, the accumulative decomposed gas maycause inferior insulation and degrade equipment material. This repoer deals with 120 selected GCBs have been usedover 5 years in the transmission systems, including 38KV, 69KV,161KV and 345KV. From the seclected GCBs, we sample SFe gas andanalyze by using a gas analysis technique. The analytical componentsinclude air, Hz0, CF,, SO,, HF, SOiFz and SOFa, but HF and SCW arenot found among all surveyed samples. It is found that about S ofsurveyed GCBs contains 302 and SOF; acidic decomopsed products. Especially, 38KV GEC-mamifactured GCBs exhibits the highestpercentage of SO�� and SOF�症as. The moisture contents of most surveyedGCBs are below the standard value of 150 ppmv. S&E is the mainGCB manufacturer having CF�� content higher than 400 ppmv.Therefore, for safety, it should be checked periodically. The finalresult concludes that the decomposed acidic gas content is increased dueto increasing the cycles of on-off operation. And such analysis canprovide useful information as an indication of initial degradation and areference point for maintenance. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。