Utilising of EMTP ATP for Modelling of Decentralized Power Sources Connection
Abstract
The ensuring of the quality of electric power isone of the actual tasks that could be solved in the field of
electric power supplying. For that reason it is necessary to
monitor the particular electric quantities, such as voltage
and current fluctuations, overvoltages, voltage drops,
voltage harmonic distortion, asymmetry phase voltages,
frequency variation and fluctuation and others that cause
e.g. power losses, devices failure, and so on.
This article deals with some typical failures in a power
system that unfavourably cause considerable electric losses
or undesirable damages. The prevention of potential failure
leads to decreasing of power losses. It is possible to solve the
various power networks using computer modelling. One of
the suitable computer software is the Electromagnetic
Transient Program (EMTP ATP). This software is mostly
intended for solving and modelling transient phenomena
and this feature was also utilized during the modelling. In
this software there were modelled various connections of
decentralized power sources and determined the maximum
power and node voltage that can be connected in particular
part of the power grid. In this article there are also
indicated another various failures that caused significant
power losses (short-circuits, overvoltages caused by
connection and disconnection of a part of the grid,
atmospheric overvoltages).
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