The Parallel Trial Operation of the Turkish Electrical Power System of TEIAS with the Continental Europe Synchronous Area (CESA)Passesinto Second Phase on February 21, 2011
The first phase (stabilization period) of the parallel trial operation of the Turkish power system with ENTSO-E’s Continental European Synchronous Area (CESA) was initiated on September 18, 2010 and concluded on February 8, 2011. Following a decision made by the Continental Europe Regional Group Plenary, the trial parallel operation is set to pass into its second phase (with non-commercial exchanges) on 21 February.
Non-commercial energy exchanges will be carried out according to preliminary agreed schedules (see the table attached) between the Turkish transmission system operator TEIAS and respectively the Bulgarian (ESO) and the Greek (HTSO) transmission system operators. The electrical power transmitted will be returned in the original tariff zone and the power balance will be zero for the days and the weeks when the tests will be implemented.
The second phase will last for two weeks and the evaluation of the results is foreseen to be concluded in mid-March. Provided the outcomes of this evaluation are satisfactory, ENTSO-E will make a decision on May 3on whether the parallel trial operation can pass into its third phase, with limited capacity allocation for commercial electricity exchange between Turkey and ENTSO-E’s Continental Europe Synchronous Area (CESA). The tests with commercial exchanges will last 11 months.
Background
On 18 September 2010 the Turkish electrical power system was synchronized with the interconnected power systems of Continental Europe (CESA), marking the start of the parallel trial operation as agreed between the Turkish system operator and ENTSO-E’s TSOs HTSO, ESO, Amprion and Tennet GmbH (former Transpower). The parallel operation is achieved by two 400 kV lines to the Bulgarian system and by one 400 kV line to the Greek system.
The duration of the stabilization phase at zero exchanges, has been initially foreseen to last two weeks, but the period had to be extended so that additional technical and technological countermeasures could be implemented by the Turkish power system operator against power flow deviations from scheduled values and low frequency oscillations.