A method and system for controlling the outlet pressure of a centrifugal compressor in a natural gas pipeline
A technology for centrifugal compressors and natural gas pipelines, applied in pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc., can solve problems such as poor outlet pressure control accuracy, and achieve the effect of ensuring stability and improving control accuracy
Inactive Publication Date: 2018-10-02
CHINA UNIV OF PETROLEUM (EAST CHINA)
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] An embodiment of the present invention provides a method and system for controlling the outlet pressure of a centrifugal compressor in a natural gas pipeline to solve the problem of poor control accuracy of the outlet pressure of a centrifugal compressor in a natural gas pipeline in the prior art
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0054] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0055] In the embodiment of the invention, the SCADA system collects the pipeline parameters of the natural gas pipeline and the working parameters of the centrifugal compressor, and controls the rotational speed of the centrifugal compressor. Among them, the SCADA system is a computer-based production process control and scheduling automation...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The embodiment of the present invention discloses a method and system for controlling the outlet pressure of a centrifugal compressor in a natural gas pipeline. By acquiring real-time on-site data; using a neural network algorithm to predict the predicted value of the distribution flow; and using an adaptive particle swarm algorithm to iteratively calculate the optimal outlet pressure of the centrifugal compressor Expected value; off-line training ELM neural network; and then calculate the centrifugal compressor speed control amount; centrifugal compressor speed control amount is transmitted to the SCADA system, so that the SCADA system controls the speed of the centrifugal compressor. By obtaining on-site data, dynamically adjust PID parameters in real time according to the control deviation and deviation change rate, control the overshoot of the controlled quantity within a reasonable range, and effectively improve the control accuracy; and obtain the optimal expected value of the centrifugal compressor outlet pressure through dynamic optimization , reduce the energy consumption of the centrifugal compressor in the process of gas transmission, realize online control through OPC communication technology, reduce the fluctuation of gas in the gas transmission pipeline, and improve the safety of the gas transmission pipeline.
Description
technical field [0001] The invention relates to the technical field of natural gas pipeline equipment control, in particular to a method and system for controlling the outlet pressure of a centrifugal compressor in a natural gas pipeline. Background technique [0002] The centrifugal compressor is one of the important components in the natural gas pipeline system. The control performance of the outlet pressure parameter control system is directly related to the stability and reliability of the centrifugal compressor, and even affects the safety and stability of pipeline transportation. sex and economy. [0003] In the current natural gas pipeline gas transmission process, the proportional-integral-derivative controller (English: Proportion Integration Differentiation, referred to as SCADA) in the data acquisition and monitoring control system (English: Supervisory Control And Data Acquisition, referred to as: SCADA) : PID) controls the outlet pressure of the centrifugal com...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): F17D1/04F17D3/01
CPCF17D1/04F17D3/01
Inventor 李立刚戴永寿于肖雯孙伟峰万勇周鹏曲晓俊
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)