兩路電源供電的三繞組變壓器的設計
陳伯根
福州天宇電氣股份有限公司，福建 福州 350012
摘 要：給出了兩路電源供電的梯級小水電站變壓器的兩種設計方案，分析了采用三繞組變壓器作為主變的優點。對三繞組變壓器的額定容量、電壓比、聯結組別、阻抗電壓等關鍵參數的選取進行了介紹，并對三繞組變壓器的結構和外部平面布置進行了改進。經實例驗證，采用改進后的三繞組變壓器的設計方案簡化了水電站的整體布置，經濟性和節能效果良好。
關鍵詞：兩路電源供電；三繞組變壓器；結構設計
中圖分類號：TM402 文獻標識碼：B 文章編號：1007-3175(2013)10-0027-04
Design of Duplicate Power Supply Three-Winding Transformer
CHEN Bo-gen
Fuzhou Tianyu Electric Co., Ltd, Fuzhou 350012, China
Abstract: Two kinds of design plans were given for cascade small hydropower station’s transformer of duplicate power supply. Analysis was made to the advantages of adopting three-winding transformer as main transformer. Introduction was made to the selection of rated capacity, voltage ratio, vector group, impedance voltage etc key parameters for three-winding transformer, and improvement was made to structure and external plane layout of three-winding transformer. After verification of actual examples, the design plan adopting improved three-winding transformer has simplified hydropower station’s integrated layout, and economy and energy saving effect are fine.
Key words: duplicate power supply; three-winding transformer; structure design
