| Traditional power quality intelligent information system for data query and analysis show the way through the two-dimensional form, but with the construction and development of the smart grid,and with the passage of the time, more and more power quality data and analytical data have accumulated, and the limitation of the traditional two-dimensional table becomes more and more prominent and visible. Thus, changing the data presentation of the power quality analysis and evaluation,and improving the intelligence capabilities of data analysis becomes very urgent.This paper take the voltage passing rate intelligent analysis system as the analysis object, put forward and discuss the technology of the power quality analysis and evaluation based on intelligent multi-dimensional analysis. The intelligent multi-dimensional analysis technology, to show the power quality data more intuitive, quick and multidimensional. The technology can analyse the power quality data more intelligent, simple and friendly, greatly imporve the user experience.The intelligent analysis technology can not only analyse the power quality indexes in the power quality system comprehensively, but also drill-through to the data which is related to the interested indexs. The technology can find out the directly or indirectly related reasons that makes the indexs unnormal, it also can help the staffs to make the decisions more accurately. At the same time, the technology can use the What-if anaylysis, to make the assumption of the original index data, and then use the association rules to do analysis of data mining. Find out the relationship under the new hypothesis set items, and get the strong association rules. Through the comparison to the original rules, users can know which items have the maximum influence on the strong association rules. It can help staffs analysis predictive and make the decisions, and guarantee the power quality more safety and the indexes of power quality better. |
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