采用DEH对200 MW机组汽轮机调节系统的改造

To Retrofit Governing System of 200 MW Steam Turbine by Use of Digital Electronic Hydraulic System

荆门热电厂采用数字电液调节系统（ＤＥＨ）对５号机组原有液压调节系统进行改造，实现了汽轮机纯电调控制。通过对ＤＥＨ投运过程中出现问题的分析和处理，保证了ＤＥＨ各项功能的实现，改善了汽轮机调节手段，提高了机组自动化控制水平。

The pure electronic hydraulic control of No.5 200 MW generating unit in Jingmen Cogeneration Power Plant is realized by retrofitting the original hydraulic governing system using DEH.Through analyzing and handling the problems occurring during the commissioning process of DEH,the realization of various functions of DEH was ensured,with regulation mians of steam turbine improved and the automatic control level of unit raised.