在机组启动时通过启／备变向厂用负荷供电；在机组正常用电时，由厂变供电并经低压厂变向400VMCC低压负荷供电以启动机组所必需的辅机；在厂用电消失时，为了保护设备和系统的安全，厂用电快切装置应快速将厂用工作负荷自动切换至启／备变；当确认保安段母线失压后，应启动事故备用柴油机供电以保证设备安全。
依据以上控制水平的要求，电气监控纳入DCS技术的要求是：
（1）发电机系统能实现程序控制和软手操控制使发电机由零起升速、升压直到并网带初始负荷。
（2）厂用电系统能按启动／停止阶段和正常运行阶段的要求程序控制和软手操来实现。
（3）能实时显示和记录上述发变组系统和厂用电系统的正常运行、异常运行和事故状态下的各种数据和状态，并提供操作指导和应急处理措施。
（4）单元机组(炉机电)实现全CRT监控。
points can be opened and closed directly in FBD or IL
Revise.
List other features include:
Project-wide modification of names, comments, data or module types
●Search and display based on specific criteria
● Cross reference can be used in systems that use a large number of variables or process points
Programs and drawings to quickly find the desired variable or process point within the scope
noodle.
ABB is the world’s largest in measurement and process automation
One of the equipment and system suppliers.
An important factor in maintaining this market position is the quality of our products
quantity, and quality from manufacture all the way to service. ABB automation early
In 1990, it obtained the DQS certificate based on ISO9001 certification,
EQnet quality based on ISO 9000/EN 29000 was subsequently achieved
Certification.
However, the Freelance 800F is more than technical excellence, I
We have also spent a lot of effort in proper planning, installation and revision too
This makes engineering design and maintenance faster, more economical and more efficient.
Industrial” is a world-leading all-round integrated open control system launched by ABB Group Automation
