Title :
Selection method of transformer interconnecting distributed generation and distribution networks
Author :
Zhu, Shouzhen ; Geng, Lin ; Zheng, Jinghong ; Wang, Xiaoyu ; Choi, DaeHee ; Li, Yang
Author_Institution :
Dept. of Electr. Eng., Tsinghua Univ., Beijing, China
Abstract :
Recently, DG (distributed generation) is rapidly developed around the world. But there are several problems in the grid-connected operation. The paper focuses on the selection of proper transformers to meet the grounding requirements in the distribution networks. Through theory analysis and simulation, optimal selection methods are proposed. Yg/¿-connection transformer is suitable for small resistance grounding distribution networks while ¿ /Yg and ¿ / ¿ connection transformers are fit for small current neutral grounding networks. The conclusions are useful for the DG-connected power system.
Keywords :
distributed power generation; distribution networks; earthing; power transformers; DG-connected power system; Yg-¿-connection transformer; distributed generation; grounding requirements; optimal selection methods; small current neutral grounding networks; small resistance grounding distribution networks; ¿-Yg transformers; ¿-¿ connection transformers; Coils; Distributed control; Distributed power generation; Ferroresonance; Grounding; Power generation; Power system interconnection; Power system simulation; Power transformer insulation; Voltage; distributed generation; distribution networks; grounding; interconnection; transformer;
Conference_Titel :
Transmission & Distribution Conference & Exposition: Asia and Pacific, 2009
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-5230-9
Electronic_ISBN :
978-1-4244-5230-9
DOI :
10.1109/TD-ASIA.2009.5356889
