regulation of frequency and active power, principles of economic load distribution, a description of the VNIIE and ORGRES control system and equipment is given, information on installation, adjustment and maintenance of control devices is given. The brochure is designed for electricians involved in the installation, adjustment and maintenance of equipment at thermal power plants. Frequency and active power control in power systems. Methods of regulation. System for automatic regulation of the operating mode of thermal power plants by frequency and active power. CAPR equipment of FM thermal power plants. Installation and adjustment of control systems. Maintenance of control devices.