热力透平2025，Vol.54Issue(2)：149-153,5.DOI:10.13707/j.cnki.31-1922/th.2025.02.014
基于汽轮机DEH控制系统的功率负荷不平衡处理
Treatment of Power-Load Unbalance Based on DEH Control System in Steam Turbine
龚文 1刘冰1
作者信息
- 1. 上海电气电站设备有限公司汽轮机厂,上海 200240
- 折叠
摘要
Abstract
When a failure occurs on the power grid side in power plant,a significant unbalance force between the mechanical power and electrical power will be applied on the turbine rotor.To prevent the steam turbine from overspeeding,a power-load unbalance protection is usually set in the digital electro hydraulic(DEH)control system.Treatments of power-load unbalance based on DEH control system in two different types of turbines were analyzed,and combined with the actual operation of thermal power plants,it was proposed that control logic must be set separately according to instantaneous unbalance and long-term load shedding.Also,the turbine must switch to a different control mode in long-term power-load unbalance conditions.Meanwhile,a calculation and processing method for instantaneous fault on grid side was proposed based on rotor characteristic data and turbine load shedding test.The research results can provide reference for improving control and protection of power-load unbalance in different types of units.关键词
汽轮机/数字电液控制系统/功率负荷不平衡/快速切回/优化Key words
steam turbine/digital electro hydraulic control system/power-load unbalance/fast cut back/optimization分类
能源与动力引用本文复制引用
龚文,刘冰..基于汽轮机DEH控制系统的功率负荷不平衡处理[J].热力透平,2025,54(2):149-153,5.
