The speed control valve is not functioning – what’s going on?
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The turbine governor valve is malfunctioning, but the speed remains unchanged and is normal; all parameters are also normal. The output signal from the governor valve is 0. If the steam pressure rises or falls, the governor valve should open to some extent
By \"failure\" you mean that at the current stage, the governor being stuck in this position is just sufficient to meet the operational requirements; but when changes occur and adjustments are needed, the governor is unable to carry out those adjustments, right?
That’s right, in the end it turns out to be a problem with the oil control circuit