A circuit breaker reliability evaluation method based on firefly optimization algorithm

Abstract

The invention discloses a circuit breaker reliability evaluation method based on a glowworm optimization algorithm. The circuit breaker reliability evaluation method comprises the following steps: determining a main fault mode of the circuit breaker; establishing a circuit breaker fault tree; establishing a fuzzy judgment matrix between the fault factors of the circuit breaker; converting a fuzzy consistency qualification used for solving each fault factor weight into a constrained optimization problem; according to an established constraint programming problem equation, importing the glowworm optimization algorithm to solve the severity weight of each fault factor; and establishing a circuit breaker reliability evaluation model to carry out reliability evaluation and obtain a circuit breaker reliability evaluation result. When the fuzzy judgment matrixes are inconsistent, circuit breaker reliability evaluation can be carried out, and the practicability of the method is improved. In addition, when the circuit breaker reliability evaluation method calculates the severity weight of each fault factor, the glowworm optimization algorithm is introduced. Compared with the traditional calculation method, the circuit breaker reliability evaluation method has the advantages of being high in convergence precision and high in convergence speed and can more simply and quickly realize circuit breaker reliability evaluation.

Description

technical field [0001] The invention belongs to the technical field of circuit breakers, and relates to a circuit breaker reliability evaluation method based on a firefly optimization algorithm. Background technique [0002] The circuit breaker is an important control and protection electrical appliance in the power grid. Its basic task is to switch power equipment or lines, and manage and control the power grid. In addition, when the power equipment or line fails, it can quickly remove the fault, isolate the fault from the grid, and protect the normal operation of other parts of the grid. The function and position of the circuit breaker in the power grid determine that it has an important impact on the reliability of the power grid operation. As the demand for circuit breakers increases, their reliability has an increasing impact on electrical equipment and grid operation. Therefore, how to accurately evaluate the operational reliability of the circuit breaker, so as to i...

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Problems solved by technology

However, the method is single, the model is simple and not comprehensive enough, and the influence of the mutual transition between various states of the circuit breaker on the reliability is not considered, and the theoretical research is not yet mature.

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