一种先进的多冷冻机组协调控制系统
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摘要
针对工业冷冻站的多台冷冻机组在运行过程中存在的各自单独控制、无法整体调节带来的冷冻出口温度控制精度差、能耗大等问题,设计一种协调控制系统。在原有控制系统基础上,增加1台协调控制器。优化控制器由高性能运算能力的CPU及多通道多类型通信协议的I/O接口组成。该控制系统在全局最优的情况下做出选择。通过总冷量负荷的实时计算及多机组协调控制策略,该控制系统根据用冷量负荷将各个孤立的冷冻机组进行协调,从而在保证用冷负荷的前提下,使冷冻机组的总体耗电量最小,有效地为企业减排降耗。多冷冻机组协调优化控制的根本目的是在保证循环水冷冻需求量的前提下,实现冷冻水出口温度控制精度最佳、整体电耗最小。在某制药企业5台-16℃冷冻机组上实施,取得良好的效果。
A coordinated control system is designed for many refrigeration units in the industrial refrigeration station during the operation process,such as the temperature control accuracy and the energy consumption caused by the separate control and the overall regulation.One coordination controller is added onto the original control system.The optimal controller is composed of CPU I/O with high performance computing capability and multi-channel and multi-type communication protocol's interface.The control system makes the selection under the global optimal condition.It coordinates each isolated coordination according to the load of the refrigeration unit with cooling capacity of the unit,by computing the total quantity of cold load and multi-unit coordinated control strategy,thus ensuring the minimum power consumption so as to reduce the emission on the premise of cooling load.The basic purpose of coordinated optimization control for multiple refrigerating units is to achieve the best control accuracy of the outlet temperature and minimize the total electrical power consumption under the premise of ensuring the refrigeration demand of circulating water.It has been implemented in 5 refrigeration units under the temperature of-16 ℃in a pharmaceutical company,and good results are achieved.
A coordinated control system is designed for many refrigeration units in the industrial refrigeration station during the operation process,such as the temperature control accuracy and the energy consumption caused by the separate control and the overall regulation.One coordination controller is added onto the original control system.The optimal controller is composed of CPU I/O with high performance computing capability and multi-channel and multi-type communication protocol's interface.The control system makes the selection under the global optimal condition.It coordinates each isolated coordination according to the load of the refrigeration unit with cooling capacity of the unit,by computing the total quantity of cold load and multi-unit coordinated control strategy,thus ensuring the minimum power consumption so as to reduce the emission on the premise of cooling load.The basic purpose of coordinated optimization control for multiple refrigerating units is to achieve the best control accuracy of the outlet temperature and minimize the total electrical power consumption under the premise of ensuring the refrigeration demand of circulating water.It has been implemented in 5 refrigeration units under the temperature of-16 ℃in a pharmaceutical company,and good results are achieved.
引文
[1]杨献勇.热工过程自动控制[M].北京:清华大学出版社,2001.
[2]孙见君,林勇,付璞,等.制冷与空调装置自动控制技术[M].北京:机械工业学出版社,2004.
[3]王永庆.人工智能原理与方法[M].西安:西安交通大学出版社,1998.
[4]沈玉华.机组负荷经济调度的研究分析[J].中国电力,1998,31(1):23-25.
[5]王灏,毛宗源,周其节.模糊变结构控制的研究[J].控制理论与应用,1999,16(4):550-552.
[6]杨世忠,任庆昌.基于空调大系统优化的冷却水系统能耗仿真[J].计算机仿真,2016,33(1):348-352.
[7]张允涛.浅谈离心式冷水机组系统节能因素分析[J].科技风,2017(23):161.
[8]谭建明,刘华,张治平.永磁同步变频离心式冷水机组的研制及性能分析[J].流体机械,2015,43(7):82-87,46.
[9]苗琳,施永刚,周辉.多台冷冻机组集中控制改造[J].中国高新区,2017(7):100.
[10]王志勇,牛建生.高压液化法改低压液化法生产液氯总结[J].氯碱工业,2015,51(7):22-24,27.
[11]金香菊,王劲柏.利用PVC生产过程余热制冷提高冷冻机效率[C]//中国化工学会2009年年会暨第三届全国石油和化工行业节能节水减排技术论坛会议论文集(上).广州:化学工业出版社,2009:423-426.
[12]姚剑飞,赵红波,张泽国,等.大型风冷冷水机组性能评价系统节能性研究[J].制冷与空调,2014,14(8):14-16,41.
[13]俞秀民,宁立伟,俞天兰,等.冷冻机组水冷器污垢经济损失研究报告[J].湖南工程学院学报(自然科学版),2002(2):21-23.
[14]张专华.冷冻机组振动停车原因分析及改进措施[J].石油化工技术与经济,2010,26(4):41-44.
[15]覃德光.VCM聚合工序冷库控制系统的改造[J].聚氯乙烯,2011,39(12):33-35.
[16]王慧锋,黄丽华,王华忠,等.冷冻机组在线状态监测与故障诊断系统[J].上海海运学院学报,2001(3):247-250.
[2]孙见君,林勇,付璞,等.制冷与空调装置自动控制技术[M].北京:机械工业学出版社,2004.
[3]王永庆.人工智能原理与方法[M].西安:西安交通大学出版社,1998.
[4]沈玉华.机组负荷经济调度的研究分析[J].中国电力,1998,31(1):23-25.
[5]王灏,毛宗源,周其节.模糊变结构控制的研究[J].控制理论与应用,1999,16(4):550-552.
[6]杨世忠,任庆昌.基于空调大系统优化的冷却水系统能耗仿真[J].计算机仿真,2016,33(1):348-352.
[7]张允涛.浅谈离心式冷水机组系统节能因素分析[J].科技风,2017(23):161.
[8]谭建明,刘华,张治平.永磁同步变频离心式冷水机组的研制及性能分析[J].流体机械,2015,43(7):82-87,46.
[9]苗琳,施永刚,周辉.多台冷冻机组集中控制改造[J].中国高新区,2017(7):100.
[10]王志勇,牛建生.高压液化法改低压液化法生产液氯总结[J].氯碱工业,2015,51(7):22-24,27.
[11]金香菊,王劲柏.利用PVC生产过程余热制冷提高冷冻机效率[C]//中国化工学会2009年年会暨第三届全国石油和化工行业节能节水减排技术论坛会议论文集(上).广州:化学工业出版社,2009:423-426.
[12]姚剑飞,赵红波,张泽国,等.大型风冷冷水机组性能评价系统节能性研究[J].制冷与空调,2014,14(8):14-16,41.
[13]俞秀民,宁立伟,俞天兰,等.冷冻机组水冷器污垢经济损失研究报告[J].湖南工程学院学报(自然科学版),2002(2):21-23.
[14]张专华.冷冻机组振动停车原因分析及改进措施[J].石油化工技术与经济,2010,26(4):41-44.
[15]覃德光.VCM聚合工序冷库控制系统的改造[J].聚氯乙烯,2011,39(12):33-35.
[16]王慧锋,黄丽华,王华忠,等.冷冻机组在线状态监测与故障诊断系统[J].上海海运学院学报,2001(3):247-250.