300MW直接空冷机组控制系统分析及优化  

Analysis and Optimization of the Control System in a 300MW Direct Air-cooling Unit

作　　者：兰立刚[1] 吴广生[1] 马睿[1] 陈冠华[1] Lan Ligang Wu Guangsheng Ma Rui Chert Guanhua(Sichuan Electric Power Industry Commissioning ＆ Test Institute, Chengdu 610072, China)

机构地区：[1]四川省电力工业调整试验所,成都610072

出　　处：《发电设备》2017年第2期140-144,共5页Power Equipment

摘　　要：介绍了波黑Stanari 300MW直接空冷(ACC)机组全程自动控制策略,对ACC步序控制、汽轮机排汽压力调节、顺流单元的防冻保护、逆流单元的除霜逻辑等控制子系统进行了分析,对试运过程中出现的问题进行了改进。结果表明:该方案能够确保机组安全启停和经济运行,并能适应各种事故工况,对ACC系统实现全程自动控制有很好的参考作用。An introduction is presented to the ACC full automatic control strategy of Stanari 300 MW unit in Bosnia-Herzegovina, together with an analysis on its sub-control systems, such as the ACC sequence control, the turbine exhausting pressure regulation, the freezing protection of parallel cells and the anti-frosting logic of reflux cells, etc. For problems occurring during commissioning and operation of the unit, improvement measures were put forward and taken. Results show that the scheme can help to secure the safety during start up, shutdown and economic operation of the unit, which is applicable to all kinds of accidental conditions, and therefore may serve as a reference for full automatic control of direct air-cooling systems.

关 键 词：汽轮机 直接空冷 步序控制 排汽压力调节 防冻保护 除霜逻辑 

分 类 号：TK323[动力工程及工程热物理—热能工程]