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題名 | 捷運主變壓器有載分接頭切換裝置施工經驗探討=Discussion of the Installation of Bulk Transformer's OLTC on the Taipei MRT |
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作者 | 律韶光; 許琮棋; | 書刊名 | 捷運技術 |
卷期 | 38 2008.02[民97.02] |
頁次 | 頁224-231 |
專輯 | 捷運施工技術 |
分類號 | 448.23 |
關鍵詞 | 有載分接頭切換裝置; 161/22kV變壓器; On load tap changer; OLTC; 161/22kV transformer; |
語文 | 中文(Chinese) |
中文摘要 | 現行捷運供電系統之161/22kV油浸式主變壓器,為了保持二次側電壓之穩定,皆有加裝 有載分接頭切換裝置(On Load Tap Changer;OLTC);由於有載分接頭切換裝置皆為油浸 型,而在有載分接頭切換裝置切換過程中,會產生相當濃度之「電弧放電」,因而導致絕緣 油焦化與碳粒形成等情況,進而使積碳逐漸累積造成絕緣油品質下降。 本文除就捷運供電系統之主變壓器OLTC作簡單的說明外,並介紹OLTC之功能,再輔以 實際OLTC故障為案例,檢討故障事故原因,進而在設計面、施工面及維修面提出建議,以 供未來施工參考。 |
英文摘要 | The existing power supply system used by Taipei MRT -161kV/22kV oil type bulk transformer is usually equipped with an On-Load Tap Changer (OLTC) device in order to maintain secondary voltage stability. Since the installed OLTC is an oil bath type, a strong arc discharge will appear during normal operation process. Thus it will cause insulating oil cooking and carbon granules to form that will make the insulating oil quality worse due to the gradually accumulated carbon deposition. This article briefly describes the bulk transformer of the power supply system, as well as its OLTC. This article also discusses the cause of accidents related to the OLTC. In its conclusion, this article proposes valuable suggestions on design, construction and maintenance for reference in the future. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。