Automated Control Systems

Engen offers solutions for automating the process control system of substations and CHPs. Extensive experience in designing and analyzing the operation of automated process control systems at generating facilities allows us to offer our customers operating concepts and methods of creating automated process control systems for power plants. In addition to design, the company may also offer assembly of control cabinets.

List of services

The whole range of works: from current situation review to installation and launch of new automation equipment.
Development of software and controllers.
Design and assembly of electrical control cabinets.
Development of a visualization system (SCADA).
Equipment supply.
Installation and supervised installation.

General base architecture of the automated system for 110/35/10/6kV substations.

The automated monitoring and control system is built as a three-level structure, which includes the lower level (sensors and actuators), the middle level (automatic control) and the upper level (SCADA).

Lower level

The equipment at this level includes cell controllers, expansion racks with discrete I/O modules, tap position indicators, outdoor temperature sensor, digital switchboards, relay protection terminals and other digital devices for converting analog and discrete signals into digital form.

Functions of lower-level devices: measuring analog electrical and non-electrical quantities, collecting discrete signals from signal sources, issuing control commands to executive circuits with priority control, collecting information about the position of the tap changer, monitoring currents of phase-to-phase short circuits and calculating electrical parameters for localizing single phase-to-ground short circuits in networks with an isolated, effectively grounded, or compensated neutral.

Middle level

As an alternative, communication controllers can be used at the middle level for systems with over 3,000 parameters.
Functions of devices at this level: collecting and aggregating data via digital communication channels from the lower level, integrating adjacent systems via digital interfaces, receiving and broadcasting standard time signals to maintain single time on all devices of the system, transmitting data to the upper level with support for individual data sets in 6 directions simultaneously, translation of control commands from the upper level.

Optionally, the equipment of this level can function as a data acquisition and transmission device (DACD) of the automated measuring and information system for electric power fiscal metering in accordance with the requirements of the wholesale and/or retail electricity market.
The equipment of this level can temporarily store events and oscillograms in devices when communication is interrupted with subsequent transmission when communication with the upper level is restored.

Upper level

The equipment at this level includes servers.
The functions of the equipment of this level include aquisition, processing, long-term storage and visualization of information on user workstations, providing the possibility of forming remote control commands.

This approach allows reducing the total cost of the system to be built based on existing facilities with lower-level devices installed.