1. (3) Y. Fujii and H. Yamaguchi: “The Interconnection Situation of Dispersed Generation and the Influence to the Power Network”, Energy & Resources, Vol. 23, No. 3, pp. 192-195 (2002-5) (in Japanese)
2. (4) K. Matsuda and S. Uemura: “Basic Study of Loop Operation for Distribution System (Phase 2)”, Proc. of the Eleventh Annual Conference of Power & Energy Society, IEE Japan, No. 157, pp. 529-530 (2002) (in Japanese)
3. (5) M. Takemoto, R. Hara, H. Kita, E. Tanaka, and J. Hasegawa: “Distribution Autonomous Operation of QCCs for Voltage Regulation in FRIENDS”, 2002 National Convention Record IEE Japan, No. 6-22, pp. 37-38 (2002) (in Japanese)
4. (6) J. Kim, H. Kita, T. Tezuka, and Y. Nishikawa: “Methods of Deter-mining the Introduction Limits of Dispersed Generation Systems in a Distribution System from a Viewpoint of Voltage Regulation”, T. IEE Japan, Vol. 116-B, No. 12, pp. 1461-1469 (1996-12) (in Japanese)
5. (7) K. Matsuda and S. Uemura: “Study on Voltage Control for Distribution Systems with Distribution Generations”, 2003 National Convention Record, IEE Japan, No. 6-43, pp. 74-75 (2003) (in Japanese)