Title :
Analysis on burning failures with 110kV dry-type reactors by salinity accumulation
Author :
Zhang, Haiyan ; Zhou, Yuanxiang ; Li, Jinzhong
Author_Institution :
Grid Oper. Branch of SGCC, Beijing, China
Abstract :
Two times of burning failures with 110kV ACF dry-type reactors happened in ±500kV Gaoling Converter Substation because of the salinity and dirtiness accumulation. The first time happened with No.5642 ACF group at Northeast Grid side and kept burning for 2h when the dry-type reactor was totally damaged. 12 days later No.5632 ACF group at North Grid side burned and resulted in all the noise-absorbing sponge on the sound-proof cover ruined. After an investigation, the sponge accumulated the salinity airing from the near sea and got a reduction of insulation capability accompanying with humidity. The sponge burned by discharge with high voltage. After the sponge was totally removed the reactors have been working safely for one year.
Keywords :
power filters; reactors (electric); substations; AC filter group; burning failures; converter substation; dirtiness accumulation; dry-type reactors; noise-absorbing sponge; salinity accumulation; sound-proof cover; time 12 day; time 2 h; voltage 110 kV; Converters; Fires; Inductors; Materials; Power harmonic filters; Substations; AC filter group; Back-to-Back connection; converter substation; dry-type reactor; noise-absorbing sponge; noise-proof cover;
Conference_Titel :
Electricity Distribution (CICED), 2010 China International Conference on
Print_ISBN :
978-1-4577-0066-8
