H. Koch (Germany)
Transmission Net, Blackouts, Bottle Necks, GIL, OHL
The European transmission net underwent strong changes over the past 10 years and still is in an ongoing transition. Coming from local energy generation and consumption, most restricted to regions within national boundaries, the electric energy is and will be even more transmitted from places of low cost energy generation to the centres of energy users in the metropolitan areas. The deregulation of the energy market and the development of large scale regenerative energy generation, mainly wind energy are the drivers of these changes. In a consequence, the today existing transmission net cannot fulfil these requirements and new or upgraded transmission lines are needed. Cross border transmission lines within the extended European Union is also a driver in the need of new transmission capacity to support the unification of the EU member countries. With these new requirements on electric power transmission and the increase of power transmission on some existing lines, some lines will be strongly loaded and this section in the net will turn into a “bottle-neck”. Such bottle-necks in the transmission net may only be some kilometres long, but have a strong influence in the whole net stability and reliability.
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