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研究生:盧光崤
研究生(外文):Lu, Guang-Chang
論文名稱:拉勃朗克(Le-Blanc)變壓器之相量合成差動保護法
論文名稱(外文):The Phasor Combination Differential Protection for Le-Blanc Transformers
指導教授:陳南鳴陳南鳴引用關係
指導教授(外文):Chen, Nan-Ming
學位類別:博士
校院名稱:國立臺灣科技大學
系所名稱:電機工程技術研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
畢業學年度:85
語文別:中文
論文頁數:132
中文關鍵詞:拉勃朗克變壓器電化鐵路差動保護相量合成差動保護結構電機工程
外文關鍵詞:Le-Blanc TransformerElectric RailwayDifferential ProtectionPhasor Combination Differential Protective SchemeELECTRICAL-ENGINEERING
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The Le-Blanc transformer is a specially connected
transformer that transforms a three-phase power system to a
two-phase or two single-phase powersystems. It is the main
transformer of electric railway in Taiwan to transform69 kV(
three-phase) to 25 kV(single-phase) system. Owing to the
specialwinding connection and different phase transformation,
Le-Blanc transformerscannot use conventional differential
protection directly. Therefore, theovercurrent protection
became the main electrical protection of Le-
Blanctransformers. The purpose of this research is to
design a differential protectivescheme for Le-Blanc
transformers. Three differential protective schemes forLe-
Blanc transformers have been designed based on a current phasor
combination method: (1) Three-relay protective scheme--
Match the secondary current phasors of Le-
Blanc connection to the primary current phasors. (2) Two-
relay protective scheme--Match the primary current phasors to
the secondary current phasors of Le-Blanc
Connection. (3) One-relay protective scheme--Match the
primary and secondary current phasors of Le-
Blanc connection to the same phasor. Results of practical
design examples using the parameters of a Le-Blanc transformer
of Taiwan Railway Bureau(Tairail) are described in this
thesis. The low mismatch sufficiently explains why the
differential protection ofLe-Blanc transformers can be
achieved by these schemes. In addition, laboratory test
results also depict the feasibility of the proposed
protectiveschemes.

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