基于总线型网络的多机组多变量大功率整流控制系统的研究与设计

发布时间：2018-03-16 03:04

本文选题：大功率整流装置　切入点：总线　出处：《北京化工大学》2015年硕士论文　论文类型：学位论文

【摘要】：在化工行业广泛使用大功率电解电源,根据生产工艺要求大功率整流装置输出的电流从几KA到几十KA不等,如果电流产生大的波动对供电系统和周围的电子设备将是灾难性的。因此,大功率整流电源对控制系统提出了很高要求。随着投资规模的不断增加,一个化工企业从原来的几台整流装置发展到十几台甚至几十台整流装置。在一个供电系统下有十几台整流器,这么大的用电功率,一旦某台整流机组电流出现大的波动或者故障,如果监控系统不能迅速做出反应,将会造成一个供电系统下的十几台整流机组不能稳定运行,将直接影响到企业的生产和设备的安全。在一个供电系统下的多台整流机组,虽然各自独立运行,但是通过电网,各个整流机组之间又存在着某种耦合关系。因此,单机组的整流控制器是整个装置中重要环节,而各个机组之间的协调也是必不可少的。为了及时获取各个整流机组的信息,我们采用了总线型网络将各个整流机组的数字控制器连接起来,可以实时可靠的将整流机组的信息传送到上位计算机,这样网络传输速度和可靠性就显得十分重要,现场总线的选择也是至关重要。大功率晶闸管整流控制技术发展的趋势必定是网络化、智能化和综合化的方向。单台整流机组的控制器一定有高速网络作为必备条件,广泛采用DSP等高速处理机,多台整流机组则采用分布式计算机控制系统,乃至与工艺DCS系统连网,构成一个广泛的信息平台。
[Abstract]:High power electrolytic power supply is widely used in chemical industry. According to the requirements of production process, the output current of high-power rectifier device ranges from several Ka to several tens Ka. If the large current fluctuation is catastrophic for the power supply system and the surrounding electronic equipment. Therefore, the high power rectifier power supply has a high demand on the control system. A chemical enterprise has developed from a few original rectifiers to a dozen or even dozens of rectifiers. Under a power supply system, there are more than a dozen rectifiers, which has such a large power consumption. Once a rectifier has a large current fluctuation or failure, if the monitoring system fails to react quickly, it will result in a dozen rectifier units under a power supply system that cannot operate stably. It will directly affect the production and equipment safety of the enterprise. Many rectifier units under one power supply system operate independently, but through the power network, there is a certain coupling relationship between the rectifier units. The rectifier controller of the single unit is an important link in the whole device, and the coordination among the units is also essential. In order to obtain the information of each rectifier unit in time, We use the bus network to connect the digital controllers of each rectifier unit, which can transmit the information of the rectifier unit to the upper computer in real time, so the transmission speed and reliability of the network is very important. The choice of fieldbus is also very important. The development trend of high power thyristor rectifier control technology must be the direction of network, intelligence and integration. The controller of single rectifier must have high speed network as the necessary condition. High speed processors such as DSP are widely used, and many rectifier units use distributed computer control system, and even connect with process DCS system to form a wide information platform.
【学位授予单位】：北京化工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TQ083.1;TP273

【参考文献】