UA
03.07.2023
For the first time in many months, back-up power input from the Ukrainian power system has finally been restored at the ZNPP
Previously, the Zaporizhzhya nuclear power plant "hung" on the single transmission line linking it to the domestic power system and experienced seven complete blackouts.
For the past four months, the temporarily occupied ZNPP has been relying on a single main 750 kV line for the external electricity it needs for reactor cooling and other essential nuclear safety and security functions.
When the 330 kV back-up power line was reconnected to the grid after repair, ZNPP back-up unit auxiliary transformers 3 and 4 were powered from it. Due to these transformers, the line can also supply all in-house needs of the power plant if the 750 kV line becomes damaged or otherwise.
After February 24, 2022, the Zaporizhzhya NPP lost power supply seven times, forcing it to resort to the site’s emergency diesel generators and threatening disaster each time.
The ZNPP had six power lines before the beginning of the russian invasion.
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