Shutdown due to voltage fluctuation in the oxygen pump
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Let’s all check if we’ve encountered any instances where voltage fluctuations caused the oxygen pump to shut down. Something similar happened in our unit a few days ago; please share any good preventive measures you know
It is mainly due to the frequency converter; frequency converters are quite sensitive to power fluctuations, and there are no perfect solutions – it’s sufficient to have appropriate emergency measures in place.
Reply to 1# lh202038: Voltage fluctuations are common in the coal chemical industry. They can be caused by factors such as thunderstorms, fluctuations in the external power grid, or internal short circuits. It is impossible to prevent it; only some remedial measures and emergency actions are available. There are also many solutions, such as DC-BANKs, surge-proof contactors, timers, and so on. It is best to conduct a thorough investigation of the on-site situation in order to develop an appropriate solution.
Some tasks need to be done more carefully; there’s no good solution other than to get back on track as soon as possible......