One-key shutdown control method for electrically-driven centrifugal compressor unit

The one-key shutdown control method comprises the steps that 1, a compressor control system UCP receives an external instruction in real time, and when the compressor control system UCP receives a normal shutdown instruction, the step 2 is executed; when an instruction of'pressure-maintaining sudden stop 'is received, entering the step 3; when a pressure relief sudden stop instruction is received, entering the step 4; step 2, executing a normal one-key shutdown control process of the compressor unit; step 3, executing a pressure-maintaining emergency one-key shutdown control flow of the compressor unit; and 4, executing a compressor unit pressure relief emergency one-key shutdown control process. The compressor unit can be automatically stopped according to the preset stopping sequence, different stopping modes are executed according to different triggering modes, and one-key stopping of the electrically-driven centrifugal compressor unit is achieved. Operators do not need to have professional operation level