Evaluation Method of 'Contribution' Attribution of Multiple Source Attribute of Power Supply Quality Problem

摘要

Voltage sag has gradually become one of the most important power quality problems with more and more sensitive devices being put into operation. Aiming at the causation attribute of power supply problem, this paper puts forward the "contribution degree" ranking method. First, calculating the weight of multi-source causation and establish the 3 level causation system based on AHP. Secondly, combined with the actual engineering data, analyzing the voltage sag under multi-source attributes. Finally, the severity of the equipment will be calculated based on the index of equipment incompatibility. Combining the weight analysis of the multiple source attribution and the temporary severity of the equipment under the multi source attribution, the "contribution degree" of the multi source attribution based on the incompatibility of the electrical equipment can be obtained.