Failure cause and consequence analysis at the highb voltage (330 kV) line sections of the dzhankoy local electrical power station of the Crimean electrical power system of the NEC “UKRENERGO”
E. V. Gorokhov, S. N. Bakayev, Ya. V. Nazim, V. V. Morgay, M. S. Popov
Donbas National Academy of Civil Engineering and Architecture
Annotation: The article is devoted to the problem of power supply reliability in the Autonomous Republic of Crimea illustrated by fact-finding of the resonant failures of the overhead high-voltage (330 kV) “Kakhovskaya – Dzhankoy”, “Kakhovskaya — Ostrovskaya” and “Melitopol’skaya — Dzhankoy” lines in the course from December 18, 2009 to February 2, 2010. There have been investigated glaze-ice and rime depositions on the cables of high-voltage lines and towers. The coefficient of exceeding actual loads in comparison with the design ones at the moment of failure was determined. There was considered a cascade failure of the intermediate metal towers of the CP-25I type and the site of damage initiation was revealed. To specify the capability of a further operation of the survivor towers № 303 and 304 of the high-voltage (330kV) lines “Kakhovskaya — Dzhankoy” their technical state was estimated; a necessity of that estimation was caused by the consequences of the intermediate towers № 305-318 damage which occurred in the same anchor span. The article comprises the analysis of the operating capacity of the supply overhead power transmission lines of the Crimean power station of the NEC “Ukrenergo”. There are given organizational and technical arrangements not to allow any similar technological disturbance and to increase the high-voltage line reliability.
Keywords: overhead power transmission line, glaze-ice and rime depositions, tower technical state survey, failure, reliability.
Pages: 75-92.
Link for citation: Gorokhov, E. V.; Bakayev, S. N.; Nazim, Ya. V. [et al.]. Failure cause and consequence analysis at the highb voltage (330 kV) line sections of the dzhankoy local electrical power station of the Crimean electrical power system of the NEC “UKRENERGO”. – Text : electronic. – In: Metal Constructions. – 2010. – Vol. 16, N 2. – Р. 75-92. – URL: https://donnasa.ru/publish_house/journals/mk/2010-2/01_gorohov_bakaev_nazim_morgaj_popov.pdf (date of access: 03.07.2024). (in Russian)
Vol. 16, N 2 (2010)Journal: Metal Constructions
Publish house: Donbas National Academy of Civil Engineering and Architecture