Abstract
A new simulation library is developed on OMNeT++ to model faults in distribution systems. The proposed library makes it possible to calculate the status of lines and busbars from the point of view of a protection system, enabling the modeling of overcurrents, power outages and fault passage indicators. The library is applied to model a decentralized protection system based on the exchange of IEC 61850 Generic Object Oriented Substation Events (GOOSE) messages between intelligent electronic devices responsible for the operation of circuit breakers and disconnectors. The time needed to secure and transmit GOOSE messages over the Internet is characterized and included in the model. Several studies are carried out to analyze the effect of different parameters, such as GOOSE retransmission times and failure rates of switching devices and communication channels, on the performance of the protection system.
Highlights
The integration of information and communications technology (ICT) is one of the more relevant innovations in power systems and has a wide range of implications in many aspects of system operations
A number of decentralized and semicentralized protection systems have been developed in the last decade [1,2,3]; these systems have taken advantage of the functionality provided by ICT and the flexibility provided by communication protocols defined by the IEC 61850 standard [4]
Decentralized protection systems rely on intelligent electronic devices (IEDs) communicating with each other, receiving information from metering devices and sending orders to switching devices
Summary
The integration of information and communications technology (ICT) is one of the more relevant innovations in power systems and has a wide range of implications in many aspects of system operations. This work proposes a procedure that uses OMNeT++ as a single simulation tool for both communication and power networks, facilitating the modeling and testing of fault location and isolation systems, on a single graphical user interface, as a logical entity. The aim of the library is to model the status of the grid from the point of view of the logic of protection systems It does not simulate electrical variables such as voltage of short-circuit current, variables that are best calculated following a co-simulation approach. This work extends the OMNeT++ simulation library by developing a series of modules that represent electrical network components and the IEDs associated with some of them. The complete, developed library can be downloaded from Reference [19]
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