Development of an Automated Control System for Supply and Exhaust Ventilation of the High-Voltage Frequency Converter Room

In order to ensure uninterrupted operation of high capacity pump units, in which high-voltage frequency converters (HVFC) are used, as well as to increase the service life of a HVFC itself, it is necessary to maintain the temperature in the room where it is mounted within certain limits. The temperature required is usually maintained owing to a supply and exhaust ventilation system, which includes supply fans, recirculation dampers and exhaust valves. This article is devoted to the development of an automated ventilation control system in the HVFC room. A generalized structural diagram of the ventilation control has been presented. The destination of the elements of the ventilation system control cabinet has been considered. An HMI interface has been developed for the operator touch screen graphic panel. The algorithm of operation of the ventilation control system has been proposed and a control program for the programmable logic controller has been made. The automated system developed ensures protection in case of emergency situations, which dramatically increases the reliability of the entire system.