DEH一次调频在实际应用中存在的问题  

The problems existing in the practical application of primary frequency control for digital electro-hydraulic control system

作　　者：柯昭 

机构地区：[1]湖北西塞山发电有限公司,湖北黄石435000

出　　处：《华电技术》2016年第3期48-49,79,共2页HUADIAN TECHNOLOGY

摘　　要：对湖北西塞山发电有限公司330 MW和680 MW火电机组汽轮机数字电液控制系统(DEH)一次调频中的2个案例进行了分析。第1个案例通过修改DEH控制逻辑,保证了机组顺利并网带负荷。第2个案例指出,DEH一次调频调节是在汽轮机高压调阀具有一定调节余量,同时单元机组协调控制系统(CCS)能很好地控制机组主蒸汽压力的条件下完成的。This paper analyzed two cases of primary frequency control for steam turbine digital electro-hydraulic control system( DEH) for the 330 MW and 680 MW units of Hubei XisaishanPower Generation Company Limited. The first case assured the grid connection with load of unit by modifying the control logic of DEH. The second case pointed out that the primary frequency control for digital electro-hydraulic control system is completed under the following conditions: high pressure regulating valve of steam turbine has a certain margin adjustment and meanwhile the unit coordinated control system( CCS) has perfect control of main steam pressure.

关 键 词：汽轮机数字电液控制系统 一次调频 并网 高压调阀 单元机组协调控制系统 

分 类 号：TM732[电气工程—电力系统及自动化]