垃圾焚烧发电厂冷却水系统一键启动及现场总线应用  

作　　者：刘喜 张程亮 李庆峰 张春林 

机构地区：[1]光大环保能源(博罗)有限公司,广东惠州516100

出　　处：《科技创新与应用》2024年第22期110-115,共6页Technology Innovation and Application

摘　　要：循环冷却水系统是发电厂中最重要的辅助系统之一,其启动流程复杂且人工操作会时常导致启动故障;在运行时,处于非经济状态下的循环冷却水系统电耗占整个发电机组的15%~25%。为解决上述2个问题,该文依据循环冷却水系统运行原理以及APS分层分级的设计原则,设计一套APS自启动控制系统,大大简化机组启动流程,避免由运行人员操作不当引起的工作失误。而后系统基于最佳真空的循环水系统优化方法,根据热力学计算和数据分析,构建经济真空模型,找到最佳经济真空值并确定单台循环水泵运行时系统经济性最高。经实验证明,在工况相近的条件下,单泵比双泵运行时循环水泵电耗减少51%,冷却塔风机电耗减少6.4%,节水69.33 t,达到了较好的节能效果。The circulating cooling water system is one of the most important auxiliary systems in the power plant,and its start-up process is complex and manual operation will often lead to start-up failures;during operation,the power consumption of the circulating cooling water system in a non-economic state accounts for 15%and 25%of the whole generator set.In order to solve the above two problems,according to the operation principle of circulating cooling water system and the design principle of APS hierarchical classification,a set of APS self-starting control system is designed,which greatly simplifies the unit start-up process and avoids the work errors caused by improper operation.Then the system is based on the optimization method of the circulating water system with the optimal vacuum.According to the thermodynamic calculation and data analysis,the economic vacuum model is constructed,the best economic vacuum value is found and the highest economy of the system is determined when a single circulating pump is running.It is proved by experiments that under similar working conditions,the power consumption of single pump is 51%less than that of double pumps,the power consumption of cooling tower fan is reduced by 6.4%,and water saving is 69.33 t,which achieves a better energy saving effect.

关 键 词：生活垃圾焚烧电厂 循环冷却水系统 一键启动 系统优化 自启动 

分 类 号：TM621[电气工程—电力系统及自动化]