ITCC (Integrated Turbine Compressor Unit Control) system issues
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This post was last edited by zhoudingshengs on 2023-12-27 at 11:21. Discussion: 1. When all three speed probes are functioning properly, which speed does the ITCC use as the actual speed of the unit? 2. In semi-automatic mode, which variables are involved in the high selection for the anti-surge controller? 3. Are the two power supplies on the AO terminal board of the ITCC control system configured in a redundant manner? 4. For conventional PID control, is a scanning cycle of 1 second sufficient for the ITCC control station?
We can also discuss the following: 1. What is the difference between the ITCC system and CCS (Unit Coordination Control System)?
1. The ITCC system selects the one with the most stable reading among the three speed probes as the actual speed of the unit. 2. In semi-automatic mode, the anti-surge controller will prioritize selected variables such as speed, pressure, temperature, etc. 3. The two power supplies at the AO terminal block of the ITCC control system are typically configured in a redundant manner to ensure the stable operation of the system. 4. For conventional PID control, a scanning period of 1 second is usually sufficient to meet the control requirements. .
The definition provided by SHT3199
4. For conventional PID control, is a scanning cycle of 1 second sufficient for the ITCC control station? Do you know where 1s comes from?
1. When the three speed probes are functioning properly, which speed does the ITCC select as the actual speed of the unit? Generally, a unit’s speed probes consist of 7 in total: 1 phase-angle probe, 2 speed-regulation probes (for high-select mode), 3 overspeed protection probes (ESD or SIS), and 1 field-display probe. 2. What variables are involved in the high-select mode of the anti-surge controller when it is in semi-automatic mode? Surge control point, interlocks, shutdown button, outlet pressure (dual-control mode). 3. Are the two power supplies on the AO terminal board of the ITCC control system configured in a redundant manner? It should be a redundant configuration; the above is just my personal understanding
1. Take the median of the three probes. 2. The output of the surge PID, the output of the process surge decoupling controller, and the output of the surge override. 3. It is a redundant setting. 4. The 1s time is too long.
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1. Take the average. 2. The output of the surge PID, the output of the process surge decoupling controller, and the output of the surge override. 3. It is a redundant setting. 4. 50-100ms.