Abstrakt
The aim of the paper is to draw attention to risks and challenges faced by the national grid
infrastructure both in the area of transmission and distribution. The study presents the characteristics
of the network grid in the area of transmission and distribution. The threats concerning the
transmission and distribution infrastructure were also discussed. Both the national transmission
and the distribution grids are adapted to presently occurring typical conditions of the demand on
electricity and to the execution of internal tasks in normal states, but they may pose a potential
threat to the security of the energy supplies. In the context of the forecasted future growth of the
electricity demand, the insufficient capacity of the National Power System in domestic sources and
sources available through interconnections, the uneven distribution of sources and customers with
the lack of adequate grid transmission capacity, the necessity to improve the quality and reliability
of energy supply to end users and to intensively develop renewable energy sources, the current grid
infrastructure in the area of transmission and distribution will be insufficient. It will be necessary
to expand and modernize the 400 and 220 kV transmission grid, the 110 kV distribution grid, in
large urban agglomerations in particular, the MV distribution grid in rural areas in particular, and to
implement investments aimed at increasing the export and import capacities of the National Power
System. The paper presents challenges faced by transmission and distribution system operators.
They mainly concern the field of investments and the area related to the preparation and implementation
of investments in the grid. These challenges result from national legislation which is
inappropriate and imposes many legal and administrative barriers substantially limiting the speed
and effectiveness of the investment process.
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