Authors: I.Y. Semykina, M.V. Kipervasser, A.V. Gerasimuk

Title of the article: The failure modeling of pump-compressor equipment and the diagnostic technic based on the analysis of the stator current of the electric motor drive

Year: 2018, Issue: 2, Pages: 155-165

Branch of knowledge: Electrical engineering

Index UDK: 621.51 (621.313)

DOI: 10.26730/1999-4125-2018-2-155-165

Abstract: The article considers a method for detecting a fault in a turbo-compressor unit by analysing the stator current of the drive motor. The brief description of the existing types of equipment protection is given, and the relevance of the proposed method is evaluated. Also, the advantages of this method are assessed. The essence of the method and its physical substantiation are considered. Mathematical models of pump-compressor equipment are given. To prove the efficiency of the proposed protection method, the authors use the mathemati-cal simulation of the turbo-compressor unit in the conditions of emergency operation modes, namely: the wear and tear of the multiplier gear pair, the shaft misalignment of the installation units, the surging of the turbo-charger. For the first two situations, the spectrograms of the stator current are obtained, and for surging - the stator current diagram are given. Modeling of the pumping unit performance in the conditions of a foreign object falling into the pump is carried out. The diagram of the stator phase current is obtained. The analysis of the obtained simulation data is made and conclusions are drawn about the presence of characteristic features for each of the faults that make it possible to identify each of them by stator current during its analysis. The applicability of the method to other equipment is estimated.

Key words: turbocompressor multiplier synchronous motor malfunction control of electrical and mechanical parameters functional

CITE DOWNLOAD