A Method of Dynamically Matching the Lower Limit Pressure in Joint Control of Air Compressor Stations

Abstract

The invention discloses a method for dynamically matching the lower limit pressure during joint control of an air compressor station, comprising the following steps: initialization process: setting an initialization value, denoted as ΔP 0 , that is, during initialization, the lower limit pressure = the minimum required pressure of the main pipe + ΔP 0 ;First cycle: ΔP=ΔP 0 , each volatility A in the continuous statistical period 1 , A 2 ,...A n , when A n >ΔP 0 When , the correction safety margin ΔP=A n *Safety factor K, if the subsequent occurrence is higher than A n The fluctuation amount of ΔP is continuously updated according to the higher value; the second cycle: ΔP=A n *safety factor K; nth cycle: ΔP=A*safety factor K, continue to count the fluctuations A in the nth cycle 1 , A 2 ,...A k , when A k When >A, correct safety margin ΔP=A k *Safety factor K, if the subsequent occurrence is higher than A k The fluctuation amount of ΔP is continuously updated according to the higher value. The invention can dynamically match a lower and safe lower limit pressure according to actual working conditions, thereby reducing the average pressure of the pipe network and further saving energy consumption.

Description

technical field [0001] The invention relates to the technical field of air compressors, in particular to a method for dynamically matching the lower limit pressure during joint control of air compressor stations. Background technique [0002] The air compressors in the air compressor station operate according to the parameters set by their respective controllers, resulting in low equipment loading rate and large pressure fluctuations in the pipe network, resulting in high energy consumption. At present, the main solution is to use the joint control of air compressor stations to increase the loading rate of equipment and reduce the average pressure of the pipe network by coordinating the start-stop and loading and unloading of various equipment, so as to achieve the effect of energy saving. The basic principle is: monitor the pressure of the main pipe in real time, and set the upper and lower limit values ​​of the main pipe pressure. When the pressure of the main pipe is lowe...

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Problems solved by technology

There is a problem in this joint control method, that is, the lower limit value can only be fixed at one value, and this value is determined manually based on experience to meet the minimum pressure demand of gas consumption, so the setting is too high, resulting in too high pressure in the pipe network and energy consumption. Serious waste

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