Power device safety operation evaluation method

Abstract

The invention belongs to the technical field of power system power devices, and particularly relates to a power device safety operation evaluation method. According to the evaluation method, a relation model between evaluation parameters is firstly built, on the basis, weighting and other mathematical adjustment are carried out on each parameter, results after adjustment are subjected to crossing and integration, and the data after crossing and integration are adjusted again. The power device safety operation evaluation method has advantages of accurate evaluation by an information redundancy technology method and also advantages of convenient operation by a scoring method; on the basis of not changing the algorithm, evaluation parameters are increased and decreased, and degradation and extension are easy; and in addition, when the method is adopted to evaluate the power device operation state, all evaluation indexes do not need to be traversed, the G matrix of the invention only needs to be monitored, and the operation is easy.

Description

technical field [0001] The invention belongs to the technical field of electric power equipment in a power system, and in particular relates to a method for evaluating safe operation of electric power equipment. Background technique [0002] With the advancement of west-to-east power transmission, north-south mutual supply, and national networking, the scale of my country's power grid and the scale of power transmission are constantly expanding, and grid security issues have become increasingly prominent. The statistical results of power grid accidents during my country's "Eleventh Five-Year Plan" show that power equipment failures account for the first cause of power grid accidents. It can be seen that the safe operation of power equipment is the primary task of avoiding power grid accidents. If the operation status of power equipment can be evaluated, it can not only quantify the operation status of power equipment, but also give early warning of power equipment that is ab...

AI Technical Summary

Problems solved by technology

[0004] First, the key performance indicator method. This method evaluates the equipment status based on some key indicators. The evaluation process of this method is simple, the amount of status to be collected is small, and it is easy to implement. However, the scoring method is single due to the lack of information sources. Therefore, it cannot fully reflect the operating status of power equipment, and the reliability of the evaluation results is not high. When the evaluation results are more accurate, the application of this method is less

[0005] The second is the scoring method. This method scores the equipment according to the size of the feature quantity and refers to the scoring standard. Finally, taking into account the weight of different feature quantities, all the feature quantities are integrated to obtain the final score of the equipment status. The scoring method evaluates the equipment. The investigation of the status is more comprehensive and easier to operate. However, this method does not take into account the impact of one technical indicator on another technical indicator, so the evaluation results are still not accurate enough

[0006] The third is the information redundancy technology method. This method not only fully considers multiple indicators of equipment status, but also takes into account the impact of one technical indicator on another technical indicator, and performs complex calculations on a large amount of data information. Mathematical methods based on Dempster-Schaffer evidence reasoning method, evaluation method based on fuzzy theory, evaluation method based on gray theory, etc., the evaluation results of this type of method are the most accurate, but the disadvantage is that the calculation is complicated, and it needs to increase the technical When using indicators, the calculation method needs to be updated again, so the operability is not strong

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