Abstract
In order to enhance the effectiveness of voltage sag governance and the practicability of the process immunity assessment method, an immunity assessment method for the assembly line process is proposed, fully considering the relationship between logistics line and power line, and thoroughly portraying the relationship between equipment and its links in depth. Combined with the existing voltage tolerance curve test results, the power line immunity time is reasonably evaluated considering the response delay of each device. In addition, the fault probability is quantified considering the possibility of equipment failure and its link repairing. On this basis, the minimal cut-set method is adapted to standardize the constructed random network of logistics lines. The immunity of the whole manufacturing process is evaluated through series-parallel logical analysis. In the end, the paper mill is taken as a sample to illustrate the proposed method. The deviation between the average annual economic loss obtained from model evaluation and this typical producer’s survey loss is regarded as the basis for the measurement of the effectiveness of the method. The results show that the immunity of the process can be accurately evaluated for the deviation of the evaluation obtained by the proposed method is relatively small.
Highlights
During the sensitive industrial process, there are numerous control and motor driving equipment that are sensitive to voltage sag and power supply interruption
Equipment failure caused by a voltage sag or interruption event will often lead to disruption of production and serious comprehensive economic losses [1]–[5]
In this thesis, a method based on traditional voltage tolerance curve (VTC), combined with the response mechanism of equipment and process structure, is proposed to evaluate the process immunity
Summary
During the sensitive industrial process, there are numerous control and motor driving equipment that are sensitive to voltage sag and power supply interruption. Literature [17] conducted a test study on the sag tolerance of the link composed of the typical power line structure of ACC-ASD-motor, but did not consider how to evaluate the sag immunity of the entire industrial process composed of different links. The failure of the link can be further judged according to the relationship between the duration of voltage sag and immunity time
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
