Protection control method and device for starting and stopping increasing process of natural gas long-distance transportation pipeline compressor

• Main Authors: DENG TONGJUN, JIANG ANLI, QIU TIANYOU, ZHAO TONGYONG, JIA BO, ZHANG YUANNING, HAN CHONG, GAN JIE
• Format: Patent
• Language: Chinese; English
• Published: 08.03.2024
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT PUMPS; PIPE-LINE SYSTEMS; PIPE-LINES; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; STORING OF DISTRIBUTING GASES OR LIQUIDS; WEAPONS

The invention discloses a natural gas long-distance transportation pipeline compressor start-up and stop-down process protection control method and device, and the method comprises the steps: monitoring motor working points of a running unit in the start-up and stop-down process of a compressor unit, and carrying out the monitoring of the motor working points in a prefabricated control chart according to the distribution position of the motor working points in the prefabricated control chart; corresponding protection schemes are executed on the operating unit and the reduced-stop unit/the operating unit and the increased-start unit; or, according to the magnitude relation between the motor rotating speed of the reduced-stop/increased-start unit and the preset rotating speed, the motor rotating speed reduction rate of the reduced-stop unit/the motor rotating speed increase rate of the increased-start unit and the anti-surge valve opening/closing rate are controlled. According to the method, by judging the abno