Turbine overspeed trip in oxygen compression unit
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Oxygen compression unit turbine trips due to overspeed; investigate and analyze the causes of the overspeed
Speeding-induced vehicle exit; rare cases of sequential vehicle exits
Yeah, the control system exceeded its speed limit once again from the very beginning
An overspeed trip indicates that your speed control system is unable to handle the situation, and there is no interlock-based trip; check whether the value for interlock trips is higher than that for overspeed trips, and verify if there are any setting errors.
According to tiandiyi*an, the speed control system cannot be adjusted – what kind of controller is used for speed control?
The shutdown was triggered by interlock protection; the cause of the overspeed could not be identified. The speed control controller has been in use for 7 or 8 years, and the issue of overspeed-related shutdowns only started appearing recently
It seems there’s no speed control controller; the speed sensor goes straight into the control system
Some units are equipped with a separate overspeed protector; the probe signal is fed into this protector, where a 3-out-of-2 decision is made before a signal is sent to the control system, which then triggers an interlock to shut down the unit. The speed adjustment is still carried out by the control system. The unit used by the original poster has been in use for some time now, so it’s necessary to consider adjusting the PID parameters or other control parameters related to speed regulation to see if that yields better results. Additionally, the speed control valve should be checked to ensure that it operates smoothly and accurately when signals are sent.
When stopping to adjust the valve, ensure that the operation is proper; values of 25, 50, 75, and 100 should all be normal. The PID settings need to be adjusted after long-term use; it seems that these settings are fixed in the program, so the program itself needs to be modified
There should be one; otherwise, it wouldn’t jump out of the car