Triconex 4107
海上风电重启 一期特许权项目获“路条”
停滞了三年的海上风电正式重启,国家一期海上风电特许权四个项目中三个获得开工“路条”。获得发改委核准“路条”的三个海上风电项目分别是:大唐新能源滨海30万千瓦项目、龙源电力大丰20万千瓦项目、鲁能东台20万千瓦项目。
水电是电力生产的第二大组成部分,相对于火电而言,水电是可再生能源,具有环保效益高、无有害气体以及烟尘和灰渣,发电效率高、发电成本低廉等方面的优势,是理想的发电模式。锦屏水电站包括锦屏一级、二级水电站,共同组成了锦屏“双子星座”电站,被认为是国内乃至世界上施工布置难度最大、建设管理难度最大、工程技术难度最大、施工环境最危险的巨型水电站之一。
水电是电力生产的第二大组成部分,相对于火电而言,水电是可再生能源,具有环保效益高、无有害气体以及烟尘和灰渣,发电效率高、发电成本低廉等方面的优势,是理想的发电模式。锦屏水电站包括锦屏一级、二级水电站,共同组成了锦屏“双子星座”电站,被认为是国内乃至世界上施工布置难度最大、建设管理难度最大、工程技术难度最大、施工环境最危险的巨型水电站之一。
锦屏水电站自动化控制系统主要包括水轮发电机组监控系统、开关站控制系统、水电站公用设备控制系统、水电站闸门自动控制系统等。通过开放、模块化的结构设计,实现对水电站生产过程的监视、采集、控制和调节,实现对机组、变压器、线路等电气设备及全厂油、气、水系统等辅机的监控和保护功能。因此锦屏水电站对该系统要求非常高,包括要具有强大的数据采集处理能力和较强的稳定性、有效地实现水电站自动监控系统“无人值班”的要求、具备灵活性和良好的兼容性、安全可靠以及抗干扰能力强等。
魏德米勒成功赢得了锦屏水电站项目,为该项目提供了一体化电气联接解决方案,应用该辅机系统的控制层。在该项目中使用的魏德米勒产品包括中间继电器、大电流端子、平板和导轨开关电源、信号隔离器、接线端子等产品,为系统安全可靠的运行提供了有力的保障。
锦屏二级水电站效果图 锦屏一级水电站效果图
稳定可靠供电
安全可靠的开源电源对于系统的可靠性事非常重要的,一旦开关电源发生故障,若不能及时发现,将会带来严重的后果。魏德米勒PRO-M系列开关电源应用于辅控系统柜中,为柜内的用电设备提供可靠的工作电压。该系列开关电源具有宽电压范围,交直流电压输入自适应;优良的过载能力;输出强劲,-25…70℃内输出功率余量充裕;转换效率高达 91%等特点,满足二次电路越来越先进的仪器仪表、控制设备以及自动化设备对于供电的要求。此外,魏德米勒PRO-M系列开关电源尺寸小,可并排无间隙安装,节省柜内空间。锦屏水电站项目中采用魏德米勒PRO-M系列开关电源能确保系统性能稳定、精度高、安全可靠性更强,为系统的生产及其它负荷提供了可靠的电力保障,同时也为控制系统实现自动化奠定了坚实稳固的基础。
魏德米勒PRO-M开关电源产品和柜内应用图
可靠有效隔离
该项目的辅控系统中还使用了魏德米勒DRM继电器,用于PLC和现在数字量信号之间的隔离。PLC本身是带晶体管输出的,但是其容量很小(500mA),很难直接驱动负载。因此需要魏德米勒DRM系列中间继电器作为PLC的继电器输出与负载之间的接口,由PLC自带晶体管来驱动魏德米勒DRM继电器的线圈,再由魏德米勒DRM系列中间继电器的触点来驱动负载,由此实现PLC自带晶体管与负载的有效隔离。魏德米勒DRM系列中间继电器因具有灵敏度高、测试锁定手柄、机械指示窗、触点指示窗、多个国际认证、长时间的使用寿命可达到25万次、可插拔功能模块、高性价比等众多特点而受到客户的青睐。魏德米勒DRM系列中间继电器体积小,适用于柜内紧凑的空间,同时适用于各种工业控制,可实现控制器和传感器、执行器间的电气隔离,信号转换等功能。
魏德米勒DRM系列中间继电器产品和柜内应用图
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