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Sleeve state monitoring and fault diagnosis system and method based on digital twinborn model

A fault diagnosis system and fault diagnosis technology, applied in fault location, information technology support system, measurement power, etc., can solve problems such as poor condition monitoring effect, achieve the effect of condition monitoring and fault diagnosis, and overcome errors

Pending Publication Date: 2022-06-03
POWER RES INST OF STATE GRID SHAANXI ELECTRIC POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a casing state monitoring and fault diagnosis system and method based on a digital twin model, which solves the problem that the state monitoring effect of the current high-voltage casing online monitoring sensing method is not good

Method used

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  • Sleeve state monitoring and fault diagnosis system and method based on digital twinborn model
  • Sleeve state monitoring and fault diagnosis system and method based on digital twinborn model
  • Sleeve state monitoring and fault diagnosis system and method based on digital twinborn model

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Embodiment 1

[0057] refer to figure 1 , Transformer high voltage bushing condition monitoring and fault diagnosis system based on digital twin model, 1) It consists of three modules: physical perception module, digital twin module and condition monitoring and fault diagnosis module. The digital twin module is connected with the physical perception module; both the digital twin module and the physical perception module are connected with the condition monitoring and fault diagnosis module.

[0058] The physical sensing module includes the high-voltage bushing physical entity, sensing equipment and storage. The sensing equipment includes oil temperature sensor, oil pressure sensor, current transformer, voltage transformer and memory, oil temperature sensor, oil pressure sensor, current transformer , voltage transformers are all connected with the memory, the memory is used to store the data collected by the oil temperature sensor, oil pressure sensor, current transformer and voltage transfor...

Embodiment 2

[0076] refer to figure 2 , a method for state monitoring and fault diagnosis of transformer high-voltage bushings based on a specific digital twin model, using the physical perception module of high-voltage bushings and the built digital twin module to perform virtual-real interaction, and input the output results into the state monitoring and fault diagnosis module for corresponding monitoring and diagnosis, including the following steps:

[0077] S1. Build a physical perception module to obtain a historical state parameter matrix and a historical sensing quantity feature matrix;

[0078] Install an oil temperature sensor and an oil pressure sensor at the oil outlet of the high-pressure bushing and the upper, middle and lower parts of the capacitor core. Install a thermometer in the environment where the high-voltage bushing is operating to obtain the ambient temperature. Install a voltage transformer and a current transformer on the outlet line of the high-voltage bushing...

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Abstract

The invention belongs to the technical field of power transmission and transformation equipment state monitoring, and discloses a sleeve state monitoring and fault diagnosis system and method based on a digital twin model, and the method comprises the steps: obtaining oil temperature and oil pressure data of a plurality of positions under different operation states of a high-voltage sleeve through an oil temperature and oil pressure sensor, and forming an operation state data vector; and inputting the high-voltage bushing as a test set into the trained neural network, and performing state monitoring and fault type diagnosis on the high-voltage bushing according to an output result, thereby solving the problem of poor state monitoring effect of an existing high-voltage bushing online monitoring sensing method.

Description

technical field [0001] The invention belongs to the technical field of state monitoring of power transmission and transformation equipment, and in particular relates to a state monitoring and fault diagnosis system and a method for transformer high-voltage bushings based on a digital twin model. Background technique [0002] Oil-less power equipment represented by high-voltage bushings plays an important role in the safe and stable operation of the power system. As the voltage level increases, the failure or damage of the high-voltage bushing spreads more and more, and the problems of personal and property safety are more and more prominent. For the insulation status diagnosis of bushings, there are still some problems in the traditional bushing status assessment and diagnosis methods including dielectric loss and capacitance testing, such as the lack of reflected insulation information and the need for power outages. The oil chromatography experiment has been fully applied...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00G01R31/08
CPCG01R31/00G01R31/08Y04S10/50
Inventor 王文森张璐师一卿丁彬韩彦华孙蕾李晓昂牛博吴经锋江涛刘强张乔根沙致远
Owner POWER RES INST OF STATE GRID SHAANXI ELECTRIC POWER CO LTD
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