Protection device proportion optimization method of 5G distribution network distributed protection system

Abstract

The invention discloses a protection device ratio optimization method for a 5G distribution network distributed protection system. The method comprises the following steps: 1, building an environment of the 5G distribution network distributed protection system; 2, constructing a reinforcement learning model of the 5G distribution network distributed protection system based on the deep Q network, wherein the reinforcement learning model comprises a prediction estimation neural network and a prediction reality neural network which have the same structure; 3, training the reinforcement learning model in the environment of the 5G distribution network distributed protection system; and 4, optimizing the protection device of the 5G distribution network distributed protection system by adopting the optimal ratio S *. According to the invention, communication between the master station protection device and the distribution network distributed protection device can be ensured, and the optimal proportion of the protection devices of the 5G distribution network distributed protection system can be found out, so that safe and efficient operation of the distribution network can be ensured.

Description

technical field [0001] The invention belongs to the field of distribution network protection, in particular to a method for optimizing the ratio of protection devices of a 5G distribution network distributed protection system. Background technique [0002] The distribution network has the characteristics of many voltage levels, complex network structure, various types of equipment, wide operation points, relatively poor security environment, etc., and there are relatively many security risk factors. The operation puts forward higher requirements, so it is necessary to arrange the distribution network protection device to protect the distribution network. However, with the continuous increase in the proportion of new energy connected to the grid and the extensive use of solid-state transformers and other equipment in the system, the original protection configuration scheme and setting principles have been severely challenged. In the traditional distribution network protectio...

AI Technical Summary

Problems solved by technology

However, with the continuous increase in the proportion of new energy grid-connected and the extensive use of solid-state transformers and other equipment in the system, the original protection configuration scheme and setting principles have been severely challenged

In the traditional distribution network protection, the selectivity is weak, the fault location is not accurate enough, it takes a long time to remove the fault, the distribution network line cannot realize self-healing after fault removal, and cannot guarantee the safe and efficient operation of the distribution network

Both the master station and the distribution network are equipped with protection devices. During the layout of the distribution network protection devices, due to technical and financial constraints, it is impossible to determine the number of master station protection devices and distribution network distributed protection devices, which has caused serious damage to the distribution network protection. certain difficulty

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