METHOD AND DEVICE FOR ONLINE EVALUATION OF A COMPRESSOR

摘要

The present invention relates to a method for online evaluation of operative range and performance of a compressor, the method comprising at least the following offline steps: setting up a digital undegraded model of the compressor in an undegraded state of the compressor; calibrating and validating the undegraded model using historical data from a compressor running line; calculating at least one undegraded performance map using the undgraded model; and at least the following online steps: calculating a degradation-adaptive model by updating the undegraded model with operative data of the compressor determined by at least one sensor of the compressor; calculating at least one actual performance map of an operative state of the compressor using the degradation-adaptive model; detecting malfunctions of the compressor by comparing the at least one undegraded performance map derived by the undegraded model and the at least one actual performance map derived by the degradation-adaptive model via at least one mathematical function. The present invention also refers to a corresponding diagnosis device.