During frequency management tests, any production sources were detached and connected back to the network to examine the ability to keep network performance. As part of the trials, the Elektren gas-fired power plant in Lithuania, with a capacity of 455 MW, was disconnected from the network for an hr and a half.
Electricity systems responded correctly, network performance was maintained, and energy supplies were not threatened, reported Lithuanian transmission strategy operators — Litgrid, Latvia — AST and Estonia — Elering on Saturday evening.
By Sunday morning, operators announced further tests — maintaining voltage in the grid.
On Saturday at 8.09 a.m. of Polish time, the last flows of electrical power of a method nature ceased between the Baltic countries and Belarus and Russia, including the Królewiecki Oblast. Full control of frequency in electricity grids and strategy balancing have been taken over by Litgrid, AST and Elering, which means cutting off to the russian IPS/UPS strategy and control of the BRELL area in Moscow and moving into the alleged isolated island mode. After the cut-off, no problems were noted with the operation of the grids and energy supplies.
Work in this mode is expected to last until early afternoon on Sunday, erstwhile it will be full synchronised with the synchronous continental Europe of CESA via the LitPol Link connection between Lithuania and Poland. It will be briefly shut down and then resume as a synchronous link. According to the latest information of the operators, this is expected on Sunday around 13 p.m. Polish time.
