Power Statistics - 2010 Edition - Full Report - Eurelectric

general information 1.3 Comments
TEI˙AS¸ established a strong and good quality 400 kV system between eastern and western parts of
the country and many new power plants can be connected to this system with some extensions without
the need of major reinforcements up to the year 2010.
400 kV transmission voltage level was studied several times and found adequate for the system
expansion up to year 2010 unless some unpredictable events take place in the region, such as bulk
power transmission between Asian and European parts of the country or serious changes occur in the
domestic fuel reserves of the country.
Turkish Electricity Distribution Co. (TEDAS¸)
Turkish Electricity Distribution Co. (TEDAS¸) owns and operates the main distribution facilities. More
than 71% of the country consumption was supplied by TEDAS¸ in 2005. As a state-owned company, it
has an obligation to provide distribution and retail services to about 28 million customers, scattered
throughout the country.
According to the privatization strategy, distribution regions will be privatized through the methods of
asset sale, rent, and transfer of operating rights or combination of them or through other legal methods.
In this respect, TEDAS¸ is included in the privatisation programme and TEDAS¸ has rearranged its
articles of incorporation related to administrative, financial and legal issues and continues to perform
its activities accordingly.
With above respect, the distribution regions were determined separating Turkey into 21 regions and
establishing 20 public Electricity Distribution Companies that started to operate on March 1 st , 2005 of
which 1 region was privatized. In 2008, Seventh Local District covering the provinces of Denizli, Aydın
and Mugˇla in south-Aegean Turkey was privatized. By the end of 2008, there existed two segment of
distribution companies i.e. 19 Public Companies and 2 private, in Turkey
Country’s technical information
Turkey’s transmission system comprises of 400 kV EHV and 154 kV HV transmission lines, 400/154 kV
autotransformers, 400 kV and 154 kV step down transformers as well as the sufficient quantity of serial
and shunt compensators which offer technical and economical advantages.
“National Transmission System” which transfers the produced electrical energy to consumer centers has
continued its progress and by the end of 2008 has reached, 14,420 km transmission lines with 33,220 MVA
transformer capacity at 400 kV voltage level, all owned by TEI˙AS¸ and 31,654 km transmission lines with
55,584 MVA transformer capacity at 154 kV level.
The losses in the transmission system with high design standards and being the most suitable to the
country conditions have proceeded below 3% (2,3) by the end of 2008 which corresponded to the
international performance levels while the works to improve the system efficiency are continued. Heavy
transmission investments about 150-200 Million $ / year needed to cope with the rapid growing demand.
The Turkish 400 kV grid complies with the (N-1) security criterion.
Turkey’s strong transmission system in full compliance with UCTE norms and standards has the
following characteristics:
Voltage levels are 400,154 and 66 kV. The last i.e. 66 kV level is not widespread and shall be upgraded
to 154 kV soon. The number of 400 kV substations is 74,154 kV substations 492 and 66 kV substations
16. The 154 kV lines are replaced with underground cabling and out-door transformer substations with
in-door substations in densely populated cities for reliable operation and with the view not to destruct
the city esthetics.
TEIAS Headquarters is located in Ankara. There are 20 Regional Divisions responsible from the Installation
and Operation of the transmission facilities. The Turkish transmission system is operated by the National
Control Centre (NCC) and by 9 Regional Control Centers (RCCs). NCC is located in Ankara.
Main changes experienced by electricity sector in the country
Turkey has interconnections with Azerbaijan (Nahcievan), Georgia, Armenia, Greece, Bulgaria, Iran, Iraq
and Syria, most of which had been used for power exchanges in the past. Nakhichevan, Syria, Iraq lines
are used for export while the lines with Bulgaria, Iran and Georgia for import of electricity. At present,
power transfer from Turkmenistan over the power system of Iran is ongoing. Energy transport to Iraq
which was started in 2003 is continued. In July 2005, power exchange with Adjara Republic has been
started over the existing Georgia line.
Power Statistics – 2010 Edition – Full Report 45