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A state monitoring system and method for a substation relay protection device

A technology of relay protection device and state monitoring system, applied in image analysis, image enhancement, instrument and other directions, can solve problems such as unsuitable use scenarios, and achieve the effect of saving cost, eliminating influence and improving accuracy

Active Publication Date: 2022-03-22
STATE GRID HUBEI ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of method has achieved certain results on small-scale data sets, but it is not suitable for usage scenarios in complex external environments

Method used

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  • A state monitoring system and method for a substation relay protection device
  • A state monitoring system and method for a substation relay protection device
  • A state monitoring system and method for a substation relay protection device

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Embodiment Construction

[0036] The present invention will be further explained below in conjunction with the accompanying drawings.

[0037] Such as figure 1 As shown, a substation relay protection device status monitoring system includes four panning and zooming cameras installed in the substation, and a computer connected to the four panning and zooming cameras respectively. In this embodiment, the resolution of the panning and zooming camera is 1920×1080.

[0038] According to the real-time images of panning and zooming cameras, the system first performs image denoising processing, and extracts image features after image registration, and then performs state recognition based on convolutional neural network. When the system is deployed, it is first necessary to manually mark a large number of substation images with relay protection devices, specifically to mark the position of the relay protection devices with wireframes on the images. Since the convolutional neural network has a strong ability ...

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Abstract

The invention discloses a state monitoring system and method for a substation relay protection device. According to the real-time picture of the substation obtained by uninterrupted shooting of a panning and zooming camera, the denoising process is first performed based on image smoothing, and then image registration is performed, and then by using convolution Neural network technology analyzes the image and can accurately identify whether the device is in a normal state. On the other hand, the camera can be installed and maintained without interrupting the power distribution service, and a single camera can monitor multiple devices, so this solution can greatly save the cost of the entire system while improving the accuracy of condition monitoring . Furthermore, aiming at the problem of model robustness in complex natural environments, the image registration scheme of the present invention enables the model to maintain performance under changing lighting conditions.

Description

technical field [0001] The invention relates to a state monitoring system and method for a substation relay protection device. Background technique [0002] Substations are an essential part of the power transmission system, responsible for converting high voltages to low and medium voltages and directing power to distribution lines. The relay protection device in the substation has irreplaceable significance for the safety of the substation. When the substation equipment fails, the relay protection device can be used to alarm in time and isolate the faulty facilities to maintain the normal operation of the power grid system. Therefore, maintaining the normal working status of relay protection devices in substations is very important for power safety. But usually, a city may have dozens of substations, and there may be multiple relay protection devices in a substation, which makes real-time artificial monitoring of all relay protection devices unfeasible. Therefore, the tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/00G06T7/33G06T5/00G06V10/46G06V10/764G06K9/62
CPCG06T7/0004G06T7/33G06T5/002G06T2207/10004G06T2207/20081G06T2207/20084G06T2207/30108G06V10/462G06F18/2411
Inventor 李鹏洪梅子吴迪文博张浩黎恒烜杜镇安周虎兵汤小兵陆小荣徐海涛
Owner STATE GRID HUBEI ELECTRIC POWER RES INST
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