There are many motors in operation or on standby in nuclear power plants,and the startup of group motors will have a great impact on the voltage of the emergency bus.At present,there is no special or inexpensive softw...There are many motors in operation or on standby in nuclear power plants,and the startup of group motors will have a great impact on the voltage of the emergency bus.At present,there is no special or inexpensive software to solve this problem,and the experience of engineers is not accurate enough.Therefore,this paper developed a method and system for the startup calculation of group motors in nuclear power plants and proposed an automatic generation method of circuit topology in nuclear power plants.Each component in the topology was given its unique number,and the component class could be constructed according to its type and upper and lower connections.The subordination and topology relationship of switches,buses,and motors could be quickly generated by the program according to the component class,and the simplified direct power flow algorithm was used to calculate the power flow for the startup of group motors according to the above relationship.Then,whether the bus voltage is in the safe range and whether the voltage exceeds the limit during the startup of the group motor could be judged.The practical example was used to verify the effectiveness of the method.Compared with other professional software,the method has high efficiency and low cost.展开更多
为了提高垃圾焚烧发电厂汽水系统的自动化水平,设计了一种汽水系统一键启动及自动控制系统,与光大环境有限公司的一垃圾焚烧发电厂建设项目相结合,同现有技术相比,系统采用机组级、功能组级、单元级3层控制结构,并遵循断点分层控制原则...为了提高垃圾焚烧发电厂汽水系统的自动化水平,设计了一种汽水系统一键启动及自动控制系统,与光大环境有限公司的一垃圾焚烧发电厂建设项目相结合,同现有技术相比,系统采用机组级、功能组级、单元级3层控制结构,并遵循断点分层控制原则,通过主控单元进行整体协同控制,同时采用PROFIBUS(Process Field Bus,过程现场总线)传输数据,简化了控制流程,有效提升了控制精准度、效率及自动化程度,也为机组汽水系统的一键启动及自动控制提供了参考。展开更多
某电厂安萨尔多AE94.3A燃气-蒸汽联合循环调峰机组,在投入商业运行初期,运行人员在机组启停过程中有过多次误操作,导致机组跳闸。在原有集散控制系统(DCS)的基础上进行了自动启停(automatic procedure startup and shutdown,APS)技术升...某电厂安萨尔多AE94.3A燃气-蒸汽联合循环调峰机组,在投入商业运行初期,运行人员在机组启停过程中有过多次误操作,导致机组跳闸。在原有集散控制系统(DCS)的基础上进行了自动启停(automatic procedure startup and shutdown,APS)技术升级改造,从而降低了运行人员的工作强度,减少误操作,对机组长期的安全稳定运行有重大意义。本文围绕某电厂安萨尔多AE94.3A联合循环机组自动启停技术项目的实施,介绍了自动启停技术整体设计框架,并对各功能断点进行了分层解析,最终对项目碰到的难点进行分析,提出了解决方案。展开更多
基金Key Project of National Natural Science Foundation of China(52237008)Beijing Municipal Education Commission Research Program Funding Project(KM202111232022)。
文摘There are many motors in operation or on standby in nuclear power plants,and the startup of group motors will have a great impact on the voltage of the emergency bus.At present,there is no special or inexpensive software to solve this problem,and the experience of engineers is not accurate enough.Therefore,this paper developed a method and system for the startup calculation of group motors in nuclear power plants and proposed an automatic generation method of circuit topology in nuclear power plants.Each component in the topology was given its unique number,and the component class could be constructed according to its type and upper and lower connections.The subordination and topology relationship of switches,buses,and motors could be quickly generated by the program according to the component class,and the simplified direct power flow algorithm was used to calculate the power flow for the startup of group motors according to the above relationship.Then,whether the bus voltage is in the safe range and whether the voltage exceeds the limit during the startup of the group motor could be judged.The practical example was used to verify the effectiveness of the method.Compared with other professional software,the method has high efficiency and low cost.
文摘为了提高垃圾焚烧发电厂汽水系统的自动化水平,设计了一种汽水系统一键启动及自动控制系统,与光大环境有限公司的一垃圾焚烧发电厂建设项目相结合,同现有技术相比,系统采用机组级、功能组级、单元级3层控制结构,并遵循断点分层控制原则,通过主控单元进行整体协同控制,同时采用PROFIBUS(Process Field Bus,过程现场总线)传输数据,简化了控制流程,有效提升了控制精准度、效率及自动化程度,也为机组汽水系统的一键启动及自动控制提供了参考。
文摘某电厂安萨尔多AE94.3A燃气-蒸汽联合循环调峰机组,在投入商业运行初期,运行人员在机组启停过程中有过多次误操作,导致机组跳闸。在原有集散控制系统(DCS)的基础上进行了自动启停(automatic procedure startup and shutdown,APS)技术升级改造,从而降低了运行人员的工作强度,减少误操作,对机组长期的安全稳定运行有重大意义。本文围绕某电厂安萨尔多AE94.3A联合循环机组自动启停技术项目的实施,介绍了自动启停技术整体设计框架,并对各功能断点进行了分层解析,最终对项目碰到的难点进行分析,提出了解决方案。
