Over the last 10 years FURNAS has been performing protection systems tests in a regular basis. The number of tests has been increasing during the years and so the needs to improve the facilities and the automation of the process in order to get complete results using a small period of time. At the same time, the experience obtained showed us that each protection test is unique. There is not a standard for disturbances applied to the electrical system simulated, not only due to the different persons involved in each test, but also due to the different type of tests and the constant improvements of the tools used to perform them. Since 1966, most of the protection tests have been performed in closed loop using the RTDS to simulate the electrical network. So we realized that the development of a program to perform the tests automatically would be very useful. The challenge was to write a program adequate for all cases required in the tests, no matter what they are. The last version of this versatile program was used to test a FURNAS protection and both the program and the test are described in this paper.
S. do Espirito Santo, V. Franca, H. de Almeida, In Proc. IPST 2001 , Rio de Janeiro Brazil, June 2001, pp. 447 - 452
KEYWORDS: protective relay testing, closed loop testing, real time, digital simulation