The electrical system has become much more complex, as a consequence of the increasing use of power
electronic devices and the number of coupled systems. Therefore, analysis has also become much more complex and simulation has been playing an important role in this case. During the design and commissioning tests of important control and protection systems, it is common to evaluate their performance using real time simulators running closed loop tests. There were very few real time simulation centers in the past due to the cost of analog technology and because simulators were very specific for each project. The digital technology facilitates for companies to have their own simulator or, due to the flexibility of digital simulators, hire another company to perform tests anytime by modeling the system involved or even using the same case used during the commissioning tests. In order to meet both criteria, the company must order, by the time of purchase, an extra hardware set of the control or protection system. Additionally, access of the simulation case should be negotiated with the supplier.
The main purpose of this article is to present and discuss the advantages of having the possibility to perform simulation tests even after the commissioning period is over. Simple items included in the purchase order could save costs and make it easier to verify occurrences that demand new simulations to be carried out in the future. The development of this article will be based on FURNAS experience, including practical cases of control and protection systems where the procedures described above were followed.
V. Franca, 9th International Conference on Modeling and Simulation of Electric Machines, Converters and System -ELECTRIMACS 2008