Intelligent substation reliability evaluation method based on information physical fusion model

Abstract

The invention discloses an intelligent substation reliability evaluation method based on an information physical fusion model. Firstly, an information physical fusion system model capable of reflecting an electric power primary system and an information network topological structure is constructed, and then reliability indexes of all equipment nodes are obtained according to actual operation conditions for the electric power primary system side of an intelligent substation; reliability indexes of all devices and communication links are analyzed based on an analytic hierarchy process for the information network side, and then the mode and the process of the interaction effect of the electric power primary system and the information network are analyzed in detail, and a method for quantitatively analyzing the interaction effect of the electric power primary system and the information network is proposed, thereby obtaining the reliability index of the electric power primary system side ofthe intelligent substation under the interaction effect of the electric power primary system and the information network. The reliability evaluation method of the intelligent substation is provided based on a Monte Carlo simulation method accordingly. The analysis result is accurate and reliable, and the evaluation result better conforms to the actual operation condition.

Description

technical field [0001] The invention relates to the technical field of power system evaluation, in particular to a method for evaluating the reliability of an intelligent substation based on a cyber-physical fusion model. Background technique [0002] As an important part of the smart grid, the smart substation is deeply integrated with the primary power system and information network, and the interaction between energy flow and information flow is becoming more and more significant. During the development of substations, the structure and function of the power primary system and information network have undergone tremendous changes. In smart substations, Gigabit Ethernet high-speed communication, microsecond-level high-precision synchronous sampling, and unconventional mutual inductance have been widely used. Compared with traditional substations, smart substations have become more complex in system structure. Therefore, while these new technologies have brought great chang...

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Problems solved by technology

[0007] In view of this, the present invention provides a method for evaluating the reliability of smart substations based on a cyber-physical fusion model to solve or at least partially solve the technical problem of unreliable evaluation results existing in the methods in the prior art

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