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Electrical transport and its impact on power system

Electrical transport and its impact on power system
Original Language Title: 
Elektritransport ja selle mõju elektrisüsteemi talitlusele

Background & policy context: 

Adding notable amount of electrical transport to existing power system might cause constraints unknown at the moment.


This research will help to highlight these possible technical issues and can serve as a base  for future economic research. Research is focused on railways.

Key Results: 

This project summarizes the electric railway nature and its impact on the electricity system. The subject has become topical in Estonia in connection with the Rail Baltica project. The project  has developed a number of new methods and models, by
that it is possible to analyze the impact of technical electric railway power system. It is also research on the basis of a number of published scientific articles.

For the operating of power system, its planning, management and analysis is essential that the different components operate together and are modelled corectly.  

Electric Railway demands are increasingly raised by the Rail Baltica project developments. The  electric system  is generally 110 kV, which is why  it is for the network operator important to know which is  the burden of the features that the power grid planning and managing adequately considered.

Electric Railway main feature compared to other loads is the fact that, generally,
connected to this type of load between the two phases, so that it causes the transmission network voltage asymmetry. In addition, the network operator also takes into  account the  harmonics and voltage step-change.

This is very  important in terms of voltage quality indicators and their permissible levels defined in the respective standards and guides.

It should also be possible catenary short circuits, regenerative braking, and the electric railway load movement from one power zone to another. 

Tallinn University of Technology
Ehitajate tee 5
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