Based On Fuzzy Mathematics And Grey Theory Of High Voltage Circuit Breaker Operation Condition Assessment Study

With the continuous expansion of the scale grid, the safe operation of power systems become more important. As in the power system protection, control functions of the normal operation of the circuit breaker has put forward higher requirements. In order to ensure reliable operation of circuit breakers, keep abreast of the status of the operation of circuit breakers, reasonable maintenance and replacement of circuit breakers, high voltage circuit breaker operating status of the study has been more and more attention, and have achieved certain results, these the results to the actual production is running well and, but the whole, the circuit breaker condition assessment more focused on the electrical or mechanical parameters of a number of specific monitoring, lack of an effective algorithm to characterize the work of the state circuit breaker and a variety of tests, the relationship between the operating parameters.In this paper, the overhaul of China's high-voltage circuit breaker status, discusses the implementation of high-voltage circuit breaker condition-based maintenance significance. First introduced the basic structure of high-voltage circuit breaker and the main categories, and then analyzes the impact of circuit breakers focused on the operational status of the main factors, established the extent of cumulative wear and tear electricity, the cumulative number of times breaking, using the number of years, time characteristics, speed characteristics, conductive circuit resistance, dielectric, and the working environment, external factors such as evaluation of the operational status of key indicators breaker; and finally focused on the SF6 circuit breaker proposed multi-layer fuzzy comprehensive evaluation model of the Analytic Hierarchy Process (AHP), The evaluation index for high-voltage circuit breakers on the impact of different working conditions to determine the various indicators in the evaluation model weight distribution, and then re-expand the right of the gray reasoning, the application of fuzzy mathematics to build their membership functions, combined with the evaluation indicators for their own characteristics, From the high-voltage circuit breaker condition assessment of the actual conditions, use a weighted model to promote high-voltage circuit breaker operating status were evaluated.The final adoption papers case study to verify the validity of the assessment methods and correct. High-voltage circuit breaker using this method to assess the status of work can be integrated assessment of a high-voltage circuit breaker of the overall state of the evaluation results can be developed to run the maintenance personnel to provide a good basis for maintenance decision-making techniques.