DEH在俄供320MW超临界机组上的改造与应用  

Modification and Application of DEH in 320 MW Supercritical Unit Made in Russia

作　　者：孙涛[1] 刘军[1] 

机构地区：[1]华能营口电厂检修部,辽宁营口115007

出　　处：《沈阳工程学院学报（自然科学版）》2015年第2期163-166,共4页Journal of Shenyang Institute of Engineering:Natural Science

摘　　要：对华能营口电厂在DEH高压抗燃油控制系统改造前的2台俄供超临界机组汽轮机控制系统和REXA执行器控制系统进行了简要说明,对原调节系统出现的问题进行了分析,重点阐述了改造后的高压抗燃油DEH系统组成、主汽门的控制、调节汽门的控制、超速保护控制与自动停机遮断系统等内容,针对改造过程中出现的问题给出了解决办法,同时对REXA执行器控制系统与高压抗燃油控制系统做了多方面比较。在进行俄供320MW超临界机组DEH高压抗燃油控制系统改造后,提高了系统的动态品质,为国内其他俄供超临界机组和采用REXA执行器控制系统机组的改造提供了经验,具有一定的借鉴意义。On the basis of the brief introduction about the original steam turbine control system and the REXA actuator control system of the 2 supercritical steam turbines made in Russia in Huaneng Yingkou Power Plant and the problems led by the control system,the composition of the high pressure fire-resistant oil DEH system, the control of the main valve, the regulating valve control, the overspeed protection control and the automatic stop interrupt system, etc. after transformation were elaborated in this paper. Through the comparison between the REXA actuator control system with the high pressure fire-resistant oil DEH control system in many aspects, the transformation was verified that was helpful to improve the dynamic performance of the control system especially for the domestic supercritical units made in Russia and the units with REXA actuator control system.

关 键 词：俄供汽轮机 DEH系统 电子危急保安器 

分 类 号：TM621[电气工程—电力系统及自动化]