Power grid fault diagnosing and parsing model with multi-protection configuration considered

Abstract

The invention provides a power grid fault diagnosing and parsing model with multi-protection configuration considered. In the power grid protection rule parsing process, the logic relationship among the power grid element state, the protection action and the breaker tripping is completely retained, and thus the fault-tolerant ability of a fault diagnosing method is helped to be improved. However, it is difficult for a current complete parsing model to conduct modeling in the multi-protection configuration situation. According to the power grid fault diagnosing and parsing model, the model starts from the power grid protection rule parsing, through the analysis of the current power grid protection double-machine configuration situation, and the problem of protection action rule parsing under the complex situation that power grid elements are configured with multiple protections in parallel is researched, and parsing modeling of the power grid fault diagnosis is generalized, so that universality and adaptability of a model parsing method for power grid fault diagnosis are improved, the model is solved through a stochastic optimization algorithm, and the method has great practical significance in the field of power grid fault diagnosis.

Description

technical field [0001] The invention relates to a grid fault diagnosis analysis model considering multiple protection configurations, and belongs to the technical field of grid fault diagnosis. Background technique [0002] Fast and accurate diagnosis of power grid faults plays a vital role in speeding up the accident handling process and ensuring the safe operation of the power system. Since the 1980s, scholars from various countries have done a lot of research on power grid fault diagnosis. The proposed power grid fault diagnosis methods mainly include expert system methods, artificial neural network methods, and methods based on analytical models. In addition, there are methods based on Petri nets. , rough set theory and information theory and other new methods of different principles. The fault diagnosis method based on the expert system is the earliest research method and has been applied in practice, but the knowledge acquisition ability and fault tolerance ability of...

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Problems solved by technology

However, the above model only considers the single primary and backup protection of components when analyzing the protection rules of the power grid, and the configuration of the power grid protection is relatively simple

However, in the actual power grid, especially the important power grid components in the transmission network, the dual-machine (microcomputer protection device) configuration based on different principles and different manufacturers is basically adopted. The same power grid component has multiple main and backup protections in parallel. The relationship between the circuit breaker and the circuit breaker is relatively complicated, and the above model cannot be used to analyze the protection rules of the power grid under complex protection configurations

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