Geração automática de scripts de testes em ambiente 61850.

Abstract

The IEC 61850 is the new substation communication protocol; it provides standard input/output messages between intelligent Electronic Device - (IED). The electrical signals from the substation equipments were replaced by digital information, controlled and managed by a substation automation System - SAS. The 61850 protocol defines a communication model to allow IEDs from different vendors to interact with each other without a protocol conversor. To generate tests that contemplate the communication involving IEDs is a non trivial task. Substation automation Systems have a concurrent nature - messages can be sent or received at the same time. The many configurations that can occur need to be tested to grant a satisfying performance. It was created a technique based on Model-Based Testing for test generation used in environments using the 61850 standard, based on substation specification and tests selection criteria. The generated test cases contain actions executed by the LN described in topology in an integrated approach. The case study used for these experiments contains the main LN involved in a IEC 61850 substation. The number of generated test cases depends on the actual configuration of the substation. For isolated components, the test case number varies from 4 to 30.000, and using a integrated approach, the number can reach over 500.000, thus needing a tool for test selection criteria.