IS200JGPAG1A
IS200JGPAG1A
IS200JGPAG1A
operator/switch and alarm window on the control panel are reduced as much as possible. The only backup monitoring equipment retained is:
(1) All analog signals are displayed in DCS, and only a small amount of display instruments are kept on the disk. 
(2) Only keep a small number of important electrical switches and cancel the electrical control panel/disk, the control function is realized in DCS. As to whether the manual synchronous switch should be retained or not, it is suggested to cancel the manual synchronous switch because the reliability of the automatic quasi-synchronous device is getting higher and higher. The reserved backup manual switch is: emergency trip button of generator and transformer group circuit breaker; Generator out magnetic switch trip button; Emergency button for diesel generator.
(3) The number of alarm light plate is kept about 20, which is combined with the thermal alarm, which not only reduces the type of equipment, but also facilitates the layout.
6 Common system control mode
For the 2 units of the public system, such as the utility and standby power system and thermal control system, DCS configuration can achieve the unit stop, another unit of the operation staff can monitor the public system, and requires the use of reliable measures to ensure the uniqueness of the control command, That is, only one set of DCS system is allowed to control the public equipment at the same time. Not because of the existence of the public system, and make 2 units of DCS coupled together.
In the practical application process of the project, according to the characteristics of DCS, two typical methods are adopted to realize the control of the public system. The DCS of Jiujiang Phase III is
