Absrraff-Adopting insulated conductors and compact configuration bas hecome the tendency in the renovation of distribution network in Chine Advantages of compact configuration are dissussed Superiority of compaet configuration against lightning protection has been analyzed. The, reason that breakage faults occurred on compaet distlibution line with polymeric spacer is discussed. It is due to the bad pollution flashover performance of the polymeric spacer cast with polycarbonate. Polycarbonate is not suitable for outdoor insulation. A new triangle composite spacer, which Is suitable for heavy pollution areas, is designed to prevent breakage faults caused by leakage current. 2&m is chosen as phase spacing. The application effects of the developed composite spacers are very good. I n d a Terms -Insulated conductor; compact distribution line; triangle polymeric spac; triangle composite space. U K During 1989 to 1991, he was an ASSOeiate Pmfessor and the Director of High Voltage Laboratory. In 1991, he was pmmoted to a FTofessor. During 1992 to 1993, he was the Head of oepamnent of Electrical Engineering, Tsinghua University. During 1993 to1994, he was the Assistant President ofTsinghua University, and during 1994 to March 1999, he was the vice Resident of Tringhua University, and since March 1999, he has been the Vice President of Tsinghua University Council. During July 1999 to On. 1999, Fmf. Guan's major research fields include high voltageinsulation and electrical discharge, composite insulators and flashover of contaminated insulators, elecnical environment technology, high voltage measurement, and application of plasma and high voltage technology in biological and m n m e n t engineering. Rof. GUAN owns many titles in academic mieties. He is the author of MOK than IS0 academic papers.
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