Automation of Steam Boiler Load Regulation at the Electric Power Station of an Iron and Steel Enterprise

The paper describes the automatic system of steam boiler regimes control at electric power stations by the criterion of natural gas consumption minimum. The current system is implemented at the electric power station, where the boilers generate steam for the main steam line. In the current system, the subsystem of heat load regulation intended for maintaining the targeted steam consumption at the boiler output, is the most heavy-duty one. This subsystem is considered together with the steam pressure regulation in the steam supply line. The operation of heat load regulation is based on a heat reception impulse. This impulse is a sum of impulses on boiler steam consumption and the speed of pressure change in the boiler drum. Signal output of the heat load regulator affects the regulation valve of natural gas. The operation of the heat load regulator and of the main regulator of steam boilers at the electric power station was researched. The research showed that the regulator operates correctly.