622MW双进双出磨制粉系统控制策略分析

Control Strategy Analysis on 622 MW Double-inlet and Double-outlet Mill Pulverizing System

介绍了越南永新电厂二期工程2×622 MW机组双进双出磨制粉系统的磨煤机热一次风、出口温度、容量风、旁路风及粉位等调节回路,对原有的控制策略进行修改,并给出相应的控制方框图,为同类型622 MW双进双出磨制粉系统的自动控制提供了参考,为机组长期、安全和稳定运行奠定了基础。

This paper introduces the regulation loops of VINH TAN Thermal Power Plant of Vietnam Phase 11 2x622 MW Unit Doub- le-inlet and double-outlet mill pulverizing system, including coal mill hot primary air, coal mill outlet temperature, coal mill capacity air, coal mill sideway air and coal mill dust level. The original control strategy is modified, the corresponding control block diagram is given, providing reference for 622 MW Double-inlet and double-outlet same type mill pulverizing system automatic control, laying a good foundation for a long-term, safe and stable operation.