关键词: 长输管道, 控制理论, 按强度控制, 按输量控制

Abstract: There are two kinds of control theories about long pipeline operation control throughput control and strength control. The former is that suction pressure is set in operation state of each pumping station, and discharge pressure for pumping the product to downstream station within the limitation of its maximum allowable value is naturely formed; the latter is that discharge pressure is set in every station, and suction pressure subject to the limitation of its minimum value allowable is naturely formed. Deviation caused by calculation can be avoid by control based on strength. A correct reasonable reaction and disposal to water hammer and bathching transportation can be made. The maximum flow capability could be gotten in pipeline, while, there are not these advantages in control based on throughput, and only the low conservation flow capability is given in pipeline. In the case of some one intermediate station rundown, pipeline will be automatically changed by strength control into by pass station transportation state, if by throughput control, pipeline will be out of control and failure.

Key words: long pipeline, operation control theory, strength control, throughput control