Power quality data processing method and device based on intuitionistic fuzzy combination weighting
A power quality, intuition fuzzy technology, applied in electrical digital data processing, data processing applications, special data processing applications, etc., can solve problems such as the influence of human subjective factors
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Embodiment 1
[0056]The invention proposes a power quality data processing method based on intuitionistic fuzzy combination weighting, uses intuitionistic fuzzy numbers to improve the classic ANP scaling method to calculate subjective weights, and combines the entropy weight method to combine the two weights with consistent subjective and objective weighting attributes. Then the gray clustering method of end-point mixed possibility function is used to deal with the uncertainty and fuzziness of the grade, and finally the comprehensive clustering coefficient is calculated by combining the index combination weight to obtain the power quality grade result.
[0057] The power quality data processing method based on intuitionistic fuzzy combination weighting of the present invention, see figure 1 shown, including the following process:
[0058] Step 1, comprehensive grade classification of power quality.
[0059] According to relevant national standards, the power quality is first divided into f...
Embodiment 2
[0114]In this embodiment, the actual on-line monitoring data of a substation 10kV bus power quality monitoring point within one year is used as the data basis for comprehensive data processing, and the monitoring data of the power quality monitoring point is obtained through a power monitoring terminal (wherein the power monitoring terminal is a prior art, It is not the invention point of this application, and will not be introduced in detail), to verify the feasibility and correctness of the gray clustering power quality data processing method based on intuitionistic fuzzy combination weighting. According to relevant national standards, the power quality is divided into four grades: high-quality Q1, good Q2, qualified Q3, and unqualified Q4. On this basis, combined with the power quality limits of different power quality grades, the grade boundaries of each index are divided, as shown in Table 2.
[0115] Table 2 Power quality index grade boundaries
[0116]
[0117] Coll...
Embodiment 3
[0143] Based on the same inventive concept as in Embodiment 1, a power quality data processing device based on intuitionistic fuzzy combination weighting of the present invention includes:
[0144] The data acquisition module is used to obtain the values of various power quality evaluation indicators of selected power quality monitoring points by using the power monitoring terminal;
[0145] The subject-object weight processing module is used to calculate the subjective weight and objective weight of each power quality evaluation index based on the intuitionistic fuzzy number and the intuitionistic fuzzy analytic hierarchy process;
[0146] The subjective and objective weight coefficient processing module is used to calculate the subjective and objective weight coefficients according to the subjective and objective function planning model;
[0147] Combined weight processing module, used for calculating combined weight based on subjective and objective weights and subjective...
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