The energy Ministry reported a large-scale energoavarii in Siberia
Moscow. May 29. INTERFAX.RU — the accident at the power grids occurred in Siberia on Monday morning, according to the website of the Ministry of energy.
The accident occurred a decrease in energonaladka in Sayan and Khakass factories “Rusala” 1.4 GW fixed the crashing processes. In addition, Sayano-Shushenskaya hydroelectric power station has reduced the load of 1.6 GW.
It is clarified that the accident was caused by erroneous actions of personnel.
According to the Ministry of energy, 2:37 GMT, the substation 500 kV “Signified” (owned by PJSC “FGC UES”) in the implementation of switching to output to the repairs of the first bus system of the first section of 220 kV effect of protection is off the first and the second bus system the first section of 220 kV. The result was de-energized three substations supplying electricity to the factories of “RUSAL”.
A minute later there was a complete loss of telemetry data transmission and control communication between the Khakass regional dispatch control and substations, in the subsequent two minutes, recorded the excess of the allowable outflow to the emergency line of the Kazakhstan-Ural.
In the period from 2:43 to 3:21 MSK team Manager has been disabled and withdrawn into reserve NN1 and 9 hydrogenerators of Sayano-Shushenskaya HPP hydro N6 was unloaded from 580 MW to 10 MW.
3:13 energy turned on the first voltage bus system of the first section of the substation “Signified” was energized substation GPP-1 of the Sayan aluminum plant. 3:46 was able to restore the dispatch communications and transmission of telemetry to supply voltage to the rest of the substation factories “Rusala” and at 4:58 MSK to resume work at the Sayano-Shushenskaya HPP in accordance with the dispatching schedule.