Improvement Of Method Of Setting Digital Protection Devices In Straight DC Power Networks

摘要

The paper describes methods for setpoints setting of digital protections (terminals) in traction DC networks. A technique for their improvement and protection settings in a complete scheme is proposed. Besides, the main technical characteristics of digital protection and automation devices are listed. Numerous network parameters, which include those affecting its service reliability, are also reviewed. The parameter factor evaluation of dc traction network servicing, including the random parameter affects, is given. The algorithm and the design procedure of the dc traction network are reported in the paper. Besides, a real operation circuit of traction network protection at the experimental site is considered.