Load distribution control system of natural gas long-output pipeline compressor unit
A technology for load distribution and compressor units, applied in pump control, mechanical equipment, machines/engines, etc., can solve the problems of increased control difficulty, reduced operating efficiency of units and pipe networks, etc., and achieve the effect of optimizing load balance
Active Publication Date: 2019-12-27
国家管网集团西部管道有限责任公司
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Problems solved by technology
Using manual operation to adjust the speed of multiple units to distribute loads reduces the operating efficiency of units and pipe networks and increases the difficulty of control
Method used
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[0018] see figure 1 , a natural gas long-distance pipeline compressor unit load distribution control system, comprising a first compressor unit, a second compressor unit and a third compressor unit, the first compressor unit, the second compressor unit and the third compressor unit The output terminals of the pressure setting value and pressure measurement value of the machine unit are respectively connected to the outlet pressure PID control, the outlet pressure PID control and the main outlet pressure control are respectively connected in parallel to the corresponding selector, and the output terminal of the selector is connected to the load distribution. Above, the input ends of the load distribution are communicated through I / O, and the input of the load distribution is also connected with the compound paranoid module, and the load distribution will output the rotation fixed value to the original control system of the UCPC. The single compressor operation mode controls the...
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The invention discloses a load distribution control system of a natural gas long-output pipeline compressor unit. The system comprises a first compressor unit, a second compressor unit and a third compressor unit, wherein the output ends of pressure setting values and pressure measurement values of the first compressor unit, the second compressor unit and the third compressor unit are correspondingly connected with an outlet pressure PID control, and the outlet pressure PID control and a main outlet pressure control are in parallel connection with corresponding selectors correspondingly. The load distribution control system of the natural gas long-output pipeline compressor unit involves load distribution and a load distribution balance control technology, and namely the load of each compressor unit is distributed by the total load according to the absolute distance between compressor operating points and a surge control line; when the total load changes, the control system quickly completes a control target of loading and uploading in the allowed time of units; and the distance between the unit operating points and the surge control line is equal, but the efficiency of the units is not necessarily optimal, so that the optimized load balance should be achieved by increasing or decreasing an offset value.
Description
technical field [0001] The invention relates to a natural gas distribution control system, in particular to a natural gas long-distance pipeline compressor unit load distribution control system. Background technique [0002] For the compressors used on the West-East Gas Pipeline, there are as many as seven different combinations of the compressor units of the West Second and Third Lines from the unit manufacturers and driving methods. The manufacturers or models of the units on the West Third Line are different from those of the West Second Line at most stations. The performance of the rotors is different. At present, the operation of the second-line unit is completely manual operation, which cannot automatically perform load distribution, cannot be put into remote control, and cannot be automatically switched when the unit is started. When the third-line unit is not added, the manual operation is based on the operator's experience. Using manual operation to adjust the spee...
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IPC IPC(8): F04D27/00F04D27/02
CPCF04D27/005F04D27/0269
Inventor 王清亮王冠霖郭晓峰张晓松葛建刚田灿蔡兴龙肖旺黄伟朱世凯梁广月何丽娜
Owner 国家管网集团西部管道有限责任公司