METHOD FOR CONTROLLING COMPRESSORS OF A GROUP OF COMPRESSOR UNIT AS PART OF A COMPRESSOR SECTION Russian patent published in 2022 - IPC F04D27/00 

FIELD: compressors.

SUBSTANCE: invention relates to a method for controlling compressors of a group of compressor units within a compressor section. In the method for controlling the compressors of a group of compressor units of the compressor section, which turns on/off individual compressors according to the signals of the proportional-integral-derivative (PID) controller, according to the invention, first for each i-th compressor, the volumetric performance range Q₁- Q₂ is determined by the gas-dynamic characteristic, where Q₁- minimum volumetric performance, at which the specified pressure P_z is provided in the common manifold of compressor units, Q₂ - maximum volumetric performance, at which the specified pressure P_z is ensured in the common manifold of compressor units, reduced to normal operating conditions, then, using the found range Q₁- Q₂, the range of power consumption N₁- N₂ is determined, where N₁ is the compressor power consumed from the network, corresponding to the minimum volumetric productivity of Q₁, N₂ is the compressor power consumed from the network, corresponding to the maximum volumetric productivity of Q₂, then, based on the accumulated data on the daily performance schedule of the compressor section determines the performed by the joint operation of the compressors selected at a given control interval, and the choice of compressors is carried out by minimizing the objective function , which is calculated by the formula , where is the total number of compressors in the group, is the total number of time intervals, is the compressor and time interval indices, is a function reflecting the operating and depreciation costs of the i-th compressor, calculated by the formula , where is the volumetric performance of the i-th compressor, and are the coefficients reflecting the operating and depreciation costs of the i-th compressor during production during the time t, while , where is the minimum volumetric productivity of the i-th compressor, is the maximum volumetric productivity i-th compressor, and each control step provides the inequality , then, based on the daily air consumption data, the predictive circuit sends a signal to turn on/off the individual compressors.

EFFECT: improving the energy efficiency of the way to control a group of compressors.

1 cl, 1 dwg