A self-adaptive control method for anti-surge

Abstract

The invention discloses an anti-surge adaptive control method. In order to overcome the problems of the existing technology that the overall response to disturbance is relatively slow, and the final anti-surge valve is too large and lasts too long, the present invention adopts the following steps: S1: according to typical design conditions, establish a two-dimensional coordinate model; S2: Real-time monitoring of working data, calculation of the real-time operating point in the two-dimensional coordinate model; S3: According to the change trend of the operating point, adaptively calculate the control target; S4: closed-loop control to achieve the control target. It can monitor the change of compressor operating state in real time, and adaptively change the control target of compressor anti-surge control according to the change rate of compressor operating state, so that the compressor can respond in advance, and the time to open the anti-surge valve during the adjustment process is shorter Shorter and more economical.

Description

technical field [0001] The invention relates to the field of industrial automation control, in particular to an anti-surge adaptive control method. Background technique [0002] Compressors are important equipment in the production process of industrial enterprises, especially centrifugal compressors are widely used because of their high efficiency, stable operation, and no pulsation in the output of high-pressure gas. However, there is a surge phenomenon in the centrifugal compressor, which will have a great impact on the output of the compressor, cause serious damage to the equipment itself, and directly affect whether the equipment can continue to work. [0003] The current centrifugal compressor is mainly based on control safety, and the control safety point is calculated based on the performance data of multiple typical working conditions in the compressor data sheet, which is used as a control reference value. At the same time, a certain safety margin is set to form a...

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the problem that in the prior art, when the fluctuation or disturbance of the process causes the operating state of the compressor to move rapidly to the surge direction, the anti-surge control output will still not have a large action, and the overall response to overcome the disturbance is relatively slow, resulting in the final The anti-surge valve is opened too large and the duration is too long; provide an anti-surge adaptive control method, real-time monitoring of compressor operating status changes, adaptively change the control target of the compressor anti-surge control, so that the compression The machine can respond in advance, so that the time to open the anti-surge valve is shorter and more economical during the adjustment process

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