Electric power supply systems of the asynchronous electric COAL SECTOR THERMAL POWER

摘要

The proposed technical solution relates to electrical engineering, namely, to the power supply system of asynchronous electric coal thermal power sector. The power supply system management of asynchronous electric coal thermal power plants, comprising an alternating current network to which the step-down transformer connected through electric cranes dumper, a complex of the belt conveyors, scraper conveyors controlled asynchronous motors are connected to the voltage inverter. Inverter voltage induction motors of all the coal sector mechanisms for its inputs are connected to a common DC bus, which is powered by a common dvenadtsatipulsnogo diode rectifier unit with improved form of the resulting current auxiliary network stations, which include a step-down transformer. Thus, through the common DC link energy exchange is carried out between drives operating in motor mode and a regenerative braking mode. The technical result provided by the proposed technical solution is to reduce distortion in the current auxiliary network and energy saving through the use of regenerative energy, simplifying technical re-drives with frequency converters.