Power supply devices for relay protection. Problems and solutions

The book contains the device, principle of operation and problems of secondary sources of power supply of microprocessor relay protection devices (MURZ), batteries, charging and recharge units, uninterruptible power sources, DC system redundancy devices. The problems of insulation controls in DC systems, the problem of monitoring the integrity of the substation battery circuit, the problems of voltage failures and methods of combating them and many other issues arising in the practice of operation of operational current systems and their own needs of substations and power plants are considered.
To facilitate understanding of text with energy, working with described electronic equipment, but not experts in the field of electronics, a detailed description of the device and the principles of action of transistors, thyristors, optocouplers, relays are given.

The book is designed for engineers and technicians engaged in the operation of operational direct current systems and relay protection, and may also be useful to teachers and students of relevant disciplines of medium and higher educational institutions