December 2017
Intermediate to advanced
260 pages
7h 13m
English
An auxiliary DC power supply substation system, shown in Figure 6.1, includes main and reserve auxiliary transformers, power battery, chargers, DC bus bars, and a distribution cabinet. This is an important substation system upon which the reliability of relay protection, automatic system control, and communication depend. According to reference 1, disturbances in this system may even lead to a full power system collapse.
A modern charger provides many different internal protective and signaling systems connected to emergency modes, while battery protection boils down, usually, to using a fuse. At the same time there is always the risk of failures in the contacts between ...