Özet:

Today, serial capacitors are often used on long transmission lines, reducing losses and increasing the transfer capacity. Capacitors also play an important role in improving the voltage stability of the network. In addition to these positive contributions, it is known that serial capacitors have a negative impact on the operation of the distance protection rolls on the line they are located. In this study, a broad-zone monitoring-based protection algorithm was proposed using k-EYK classification method for the detection of the failure location in the networks with a serial capacitor. The algorithm was tested on the radio network created in the Digsilent Power Factory program. In the short circuit scenarios created for the test, 3-phase balanced and one-phase soil failures were analyzed under different failure empedans. According to the results obtained, the suggested algorithm has been shown to be able to correctly identify the defective line in the short circuits created at certain points of the lines. The study also proposed a protection scheme that covers the measures to be taken after the detection of the network failure site.

Anahtar Kelimeler: