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|Country||Bulgaria, Romania, Ukraine|
|Passes through||Isaccea, Romania|
|To||South Ukraine Nuclear Power Plant, Ukraine|
|Type||Overhead transmission line|
|Type of current||HVAC|
|AC voltage||750 kV/400 kV|
|No. of circuits||1|
Construction of a 750 kV powerline from Ukraine through Romania to Bulgaria was agreed together with construction of the South Ukraine Nuclear Power Plant. The agreement was signed in Moscow in 1982 by the electrical industry ministers of the Soviet Union, Romania and Bulgaria. The powerline started operating in 1986 and it was completed in 1988.
The powerline starts in Bulgaria at Vetrino (Suvorovo) substation near Varna and runs northward. In Dobrudja it crosses the border between Romania and Bulgaria and terminates at Isaccea substation in Romania. From there the line crosses Danube River, which forms the border between Ukraine and Romania in a 938 metres long span on two 118 metres tall delta pylons situated east of Isaccea and runs than to Yuzhnoukrainsk substation situated just north of South Ukraine Nuclear Power Plant.
Hereby it crosses at least four times the border between Moldova and Ukraine. However, there is and was no branch to the power grid in Moldova, although it passes Vulcăneşti substation.
The used towers are designed for carrying a single circuit in a single level. As conductors bundle conductors of 4 ropes are used. Nearly all suspension towers are poertal pylons, most of them guyed, but also several free-standing. The free-standing portal pylons carry the conductor in the middle on a V-shaped insulator, while the outmost conductors are as at the guyed suspension towers carried by a normal suspension insulator. As strainers triple towers are used whereby a fourth tower is required for strainers without or with less direction change for keeping the required distance of the outmost conductor to the tower. Also transposing towers are implemented as monopolar towers whereby two additional towers are required.
The section between Vetrino and Isaccea is since the synchronisation of the Romanian power grid with that of Western Europe, which took after 6 years of trial operation finally take place in 2003 [permanent dead link], operated with 400 kV. The section between Isaccea and Yuzhnoukrainsk is since the synchronisation of the Romanian power grid with that of Western Europe not in use and scrapped in most parts.
According to Google Maps the line ends actually short after Danube Crossing on a strainer. In the further section the conductors are except few exceptions missings and even some towers are demolished. As more one follows the line northward, the number of missing pylons increases and north ofit is impossible to follow the relicts of the line on Google Maps, as no visible traces are left.
The first section starting from Yuzhnoukrainsk substation until a point situated atis still existing with pylons carrying conductors, then there are some further pylons without conductors until a strainer at after which there are no visible traces of the line on Google Maps.
However, there are still some further pylons mostly strainers, but also suspension towers in the area between the Northern and Southern visible end of the powerline, but it is not possible to track it on Google Maps.
Between Krasnoye and Kuchurhan just before the last crossing of border between Moldova and Ukraine, there is still a section of the line with conductors.
|Bulgaria–Romania border crossing|
|Danube crossing, Tower South|
|Danube crossing, Tower North|
|Southern End of conductors|
|First crossing of border between Ukraine and Moldova|
|Second crossing of border between Ukraine and Moldova|
|Third crossing of border between Ukraine and Moldova|
|Fourth crossing of border between Ukraine and Moldova|
|Fifth crossing of border between Ukraine and Moldova|
|Sixth crossing of border between Ukraine and Moldova|
|Seventh crossing of border between Ukraine and Moldova|
|Eight crossing of border between Ukraine and Moldova|
|Ninth crossing of border between Ukraine and Moldova|
|Tenth crossing of border between Ukraine and Moldova|
|Eleventh crossing of border between Ukraine and Moldova|
|Southern visible end of line|
|Start of intact section|
|End of intact section|
|Twelfth crossing of border between Ukraine and Moldova|
|Northern visible end of line|
|Northern End of conductors|
- Picture of demolished pylon
- Vladimir Socor (1985-11-18). "Soviet-Romanian Programs in Nuclear Energy Development" (PDF). Radio Free Europe/Radio Liberty. Retrieved 2016-06-07.