The Brandov BTS completed in 2011 is the newest and most modern border transfer station in the Czech Republic. It is located in the Ore Mountains, and joins the Czech transmission system to the German OPAL pipeline, which connects with the NORD STREAM pipeline carrying Russian natural gas via the “northern route”.
This border transfer station is located amid the peaks of the Ore Mountains, and is one of the highest points of the whole transmission system. It is an important junction point, where the pipelines of three gas companies meet. Three metering sections allow the measurement of transported gas both in the direction Czech Republic - Germany and in the reverse flow direction.
Along with the Kralice CS, the Kouřim CS is one of the oldest compressor stations on the transmission system. It lies on the “central section” of the system, via which Russian natural gas is transported to customers in Prague, central, northern and western Bohemia, and eastern and northern Germany. Its technology is the same as at the Kralice CS.
Natural gas is compressed using centrifugal compressors driven by gas turbines. The Veselí nad Lužnicí Compressor Station is equipped with upgraded gas turbines and compressor units of Czechoslovak manufacture. It is also the site of a Training Centre for compressor station shift operation staff, head operating technicians and shift operating technicians.
Along with the Kouřim CS, the Kralice CS is one of the oldest compressor stations on the transmission system. During the construction of a new line of the central section of the DN 1000 transit pipeline in 1996 the Kralice CS was retrofitted with two modern Dresser-Rand turbine compressor units with a power output of 13 MW and high thermal efficiency.
The Hostim CS is located on the route Lanžhot-Rozvadov on the southern section of the transit pipeline, and each year 28 million cubic metres of natural gas passes through it on the way from Russia to Germany and France. It is equipped with gas turbines and compressor units of Czechoslovak manufacture, and its technical equipment is being upgraded on an ongoing basis.
Russian natural gas passes through the Břeclav CS on the way to Germany and France. The station is equipped with upgraded gas turbines and compressor units of Czechoslovak manufacture.
This border transfer station is situated near Břeclav, where natural gas imported from Russia via the Ukraine and Slovakia enters the Czech Republic. The station was built in the 1990s after the division of the Czech and Slovak Federal Republic. It has three filtering and metering sections fitted with orifice plate measuring systems.
The Czech-Polish interconnector “STORK” has been in operation since 2011, and is the first ever gas pipeline connecting the Czech and Polish grids. About 10 km of the pipeline is in the Czech Republic, and a further 22 km continues on the Polish side, where the border transfer station is also located. The interconnector (diameter DN 500, pressure 6.3 MPa) runs along the route Třanovice – Cieszyn – Skoczów, and was co-financed by the EU under the European Energy Programme for Recovery (EEPR).
The high-pressure GAZELLE pipeline (diameter DN 1400, pressure 73 bars) connects the Brandov Border Transfer Station with the Bavarian border transfer station at Waidhaus, thereby bringing in gas via the “northern route”. The pipeline is 166 km long and allows bi-directional operation, with a gas transport capacity of around 55 billion m³/year. The pipeline construction work is scheduled for completion by the end of 2012.
This border transfer station is located in Poland and is operated by GAZ-SYSTEM.
This border transfer station is located in Germany and is operated by Open Grid Europe.
This border transfer station is located in Germany and is operated by Wingas Transport.
This compressor station is located in Germany and is operated by ONTRAS.
The transit pipeline system is used both for the international transportation of natural gas to foreign partners and for the transmission of natural gas to supply the Czech Republic. It consists of pipelines totalling 3,600 km in length, with nominal diameters ranging from DN 800 to DN 1400 and nominal pressures of 6.3 MPa, 7.35 MPa and 8.4 MPa. The first line of the transit pipeline, with diameter DN 900 (known as the “northern branch”), was constructed between 1971 and 1973. Progressive demands for increased transmission capacity then led to the construction of further lines on this northern branch, and over the years 1976 to 1988 the system was expanded by an additional three lines (the “southern branch”) which was connected with the northern branch by a DN 900 pipeline. The most recent addition is a DN 1000 pipeline on the northern branch which was completed in the year 2000.
Natural gas entering and exiting the Czech Republic passes through a system of acceptance and transferral (custody transfer), i.e. it is quantitatively and qualitatively metered and measured at border transfer stations at Lanžhot, Hora Svaté Kateřiny and Brandov, and in Germany at the border transfer stations at Waidhaus and Olbernhau. Gas system technology allows the flow of gas to be diversified at these border transfer stations.
The requisite pressure of the gas in the pipelines is ensured by compressor stations built at intervals of approximately 100 km. On the northern branch, compressor stations are in operation at Kralice nad Oslavou and Kouřim. On the southern branch they are located at Břeclav, Hostim and Veselí nad Lužnicí. The total installed capacity of these compressor stations is 297 MW.
Number of turbine units
|5x 6MW||5x 6MW||9x 6MW||9x 6MW||9x 6MW|
|2x 13MW||2x 13MW||1x 23MW|
Installed capacity of CS
|56 MW||56 MW||77 MW||54 MW||54 MW|
Total installed capacity for transmission
In addition to the compressor stations, individual lines are also interconnected at key junction points at Malešovice, Hospozín and Rozvadov, as well as at shut-off valve stations half-way between the compressor stations.
The system of national pipelines is connected to the transit pipelines by national transfer stations. The national system is composed of pipelines with a total length of 1,180.450 km. The nominal diameters of the pipes are between DN 80 and DN 700, and the nominal pressures range from 4 MPa to 6.3 MPa. The backbone pipelines of the national system are the Hrušky – Děhylov DN 700 line, the Veselí – Prague DN 700 line and the Hodonín – Hněvice DN 700/500 line.
The national pipeline system is connected to the transit system by a total of 6 national transfer stations. From the transmission system of NET4GAS natural gas is transferred via a total of 81 transfer points to the distribution pipeline systems of regional companies. Via 6 transfer points natural gas is supplied to direct customers, and 6 transfer points are built for the purposes of underground gas storage facilities.
From the national pipeline system of NET4GAS natural gas is transferred via a further 75 transfer points to the distribution pipeline systems of regional companies and other direct customers. Custody transfer metering of the quantity of gas is installed at all these transfer stations.
The transit and national gas pipeline systems are managed by two Operating Areas (Bohemia and Moravia).