IS200DTTCH1A
IS200DTTCH1A
IS200DTTCH1A
operation. When some systems or equipment are in normal operation, they are often operated once for several months or longer.
(2) The electrical equipment protection automatic device requires high reliability and fast operation speed. The protection speed of the development group should be within 40ms. Automatic quasi-synchronous voltage mode, speed, voltage adjustment and sliding pressure control requirements within 5ms; Voltage automatic adjustment device fast excitation requires a very short time; The quick switching time of quick cutting device is generally less than 60 ~ 80ms, and the phase difference of synchronous identification is 5° ~ 20°.
GE
(3) 300MW and above units in general every 2 units share 1 set of start/standby change, any unit maintenance can not affect the normal operation of another unit, so DCS control should consider its control mode, to ensure that only one unit of DCS to achieve the control of the common part, while another unit of DCS can achieve real-time monitoring, And this operation control can be switched.
(4) The interlocking logic of the electrical system is simple, but the operating mechanism of the electrical equipment itself is complex.
Therefore, the electrical system of the unit into DCS control, control system has high reliability requirements. In addition to realizing normal start-stop and operation operation, it is especially required to realize real-time display of various data and states under abnormal operation and accident state, and provide corresponding operation guidance and emergency treatment measures to ensure the automatic control of electrical system in the most safe and reasonable working conditions.
The electrical system shall be included in the scope of DCS monitoring
According to the operation of the unit and the characteristics of electrical control, in the application of the project will be used in the generator – transformer group and plant power supply and other electrical system control are included in the
