Unbundling and Safe Operation of Power Systems Solutions for the Practice

Abstract Starting from the continuously grown tasks and the strategy for rth e reliable operation of the interconnected European power system during the decades of regulated energy market, the cooperation between the new companies resulted by the unbundling process is pointed out; this means the cooperation between the power generation companies and the marketing companies - responsible for trade and supply - on the one hand and the now trade-independent system operators on the other hand. Based on these considerations, changes required in system operation when turning over to the open electricity market are stated as well as measures, which will - from the present technical and organizing standpoint - already be necessary for retaining a reliable interconnected system operation furtheron. These statements will be underlined by practical examples.