| 摘要 |
FIELD: heat power engineering. ^ SUBSTANCE: invention can be used in thermal power stations for economic automated control of steam-turbine power-generating units under nominal and sliding pressure conditions. According to invention, regulative valves on lines delivering steam to turbine are kept fully open under all operating conditions of power-generating unit. To change over from one steady-state mode to the other within the limits of rated load, fuel feed regulating valves and feed water regulating valves delivering fuel and water into boiler are acted upon. To change over for load exceeding rated one, regulating valves on lines of steam extraction for regeneration, which are also fully opened, are partially closed. Valves delivering steam to turbine are partially closed for a short period of time when frequency in power supply network deviates from tolerable value, with subsequent return of valves in initial fully open state after setting of frequency within preset limits. ^ EFFECT: provision of operation of steam-turbine power-generating unit under all loads with minimum losses for steam throttling, materially increased economy of operation. ^ 2 cl, 1 dwg |
