350MW机组超高压供热系统改造与控制方案

Retrofit and Control of an Ultra-high Pressure Heating System in a 350MW Unit

对某电厂350MW机组的超高压供热系统进行改造,介绍了改造的热力系统、控制方案,以及增加供热量后的机组凝汽器补水系统,改造增加了电厂对外供热量,提高了用户蒸汽参数的稳定性,为同类型机组供热改造提供借鉴。

An introduction is presented to the retrofit on an ultra-high pressure heating system of a 350 MW unit,with focus on the thermal parameters,the control scheme and the feedwater system for the unit condenser required by the increase of heat supply.After retrofit,the heating capacity of the power plant to outside customers is promoted,the steam parameters are stabilized.This may serve as a reference for retrofit of heating systems of similar units.