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Life cycle evaluation and fault early warning method for high-voltage circuit breaker

A high-voltage circuit breaker, fault warning technology, applied in biological neural network model, information technology support system, design optimization/simulation, etc., can solve the problem that high-voltage circuit breakers cannot provide high-voltage circuit breakers

Pending Publication Date: 2020-01-17
STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: the current detection of high-voltage circuit breakers cannot provide the technical problem of life cycle assessment of high-voltage circuit breakers

Method used

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  • Life cycle evaluation and fault early warning method for high-voltage circuit breaker
  • Life cycle evaluation and fault early warning method for high-voltage circuit breaker
  • Life cycle evaluation and fault early warning method for high-voltage circuit breaker

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Effect test

Embodiment 1

[0039] A high-voltage circuit breaker life cycle assessment and fault early warning method, such as figure 1 As shown, the following steps are included: A) Obtain the detection data of the same type of high-voltage circuit breaker during historical maintenance. Detection data include closing time, opening time, just closing speed, just opening speed, different phases of three phases, different phases of the same phase, gold short time, no flow time, maximum speed of moving contact, average speed of moving contact, Moving contact action time, bouncing time, bouncing times, bouncing maximum amplitude, opening and closing stroke, current waveform curve during opening and closing process, time speed travel dynamic curve, opening distance and contact resistance in the opening and closing stroke of moving contact. By obtaining various data of the high-voltage circuit breaker, the state data of the high-voltage circuit breaker is more comprehensive, which helps to improve the accurac...

Embodiment 2

[0052] On the basis of Embodiment 1, this embodiment has made further improvements, such as Figure 8 As shown, the method for judging whether the difference between the detection data and the historical detection data is greater than the preset threshold includes: D41) Convert the state quantities in the detection data and historical detection data into Boolean quantities, and use {0,1} to represent false and true respectively ; D42) normalize the numerical values ​​in the detection data and historical detection data, obtain the minimum and maximum values ​​of the normalized historical detection data items respectively, and process the Boolean values ​​and numerical values ​​according to the set After sorting the detection data, the detection vector is formed, the minimum values ​​of the historical detection data are sorted to form the left vector of historical detection, and the maximum values ​​of the historical detection data are sorted to form the right vector of historica...

Embodiment 3

[0054] On the basis of Embodiment 1, this embodiment has made further improvements, such as Figure 9 As shown, the method for judging whether the difference between the detection data and the historical detection data is greater than the preset threshold includes: D51) Segmenting the detection data and the numerical value in the historical detection data, using the segmented interval as the name, converting the numerical value into a state D52) convert the detection data and the state quantity in the historical detection data into Boolean quantities, and use {0,1} to represent false and true respectively; D52) The Boolean quantities in the processed historical detection data have different values Delete the Boolean quantity of the value, sort the remaining Boolean quantity of the historical detection data according to the setting, respectively form the historical detection vector, select the Boolean quantity corresponding to the historical detection vector in the detection dat...

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Abstract

The invention relates to the technical field of power equipment maintenance, in particular to a high-voltage circuit breaker life cycle evaluation and fault early warning method which comprises the following steps: A) acquiring detection data; b, setting a fault source, enabling the high-voltage circuit breaker to be continuously switched on and off until a fault occurs, enabling the switching-onand switching-off action times to be N, and carrying out the periodic detection; c) obtaining a life cycle evaluation result; d) training a fault early warning neural network model; and E) inputting the detection data of the high-voltage circuit breaker to be evaluated and early warned into the fault early warning neural network model, if the fault early warning neural network model outputs a fault type, sending out fault early warning, and the corresponding fault is the fault type output by the fault early warning neural network model. The method has the substantive effects that the representation of the life cycle of the high-voltage circuit breaker is obtained, so that the maintenance of the high-voltage circuit breaker is more targeted, and the working stability and reliability of thehigh-voltage circuit breaker are improved.

Description

technical field [0001] The invention relates to the technical field of electric equipment maintenance, in particular to a method for life cycle assessment and fault early warning of a high-voltage circuit breaker. Background technique [0002] The high-voltage circuit breaker can not only cut off or close the no-load current and load current in the high-voltage circuit, but also cut off the overload current and short-circuit current through the function of the relay protection device when the system fails. Break capacity. High-voltage circuit breakers are responsible for the dual tasks of control and protection in the power system, and their performance is directly related to the safe operation of the power system. Therefore, in the maintenance of the power grid, the detection and maintenance of high-voltage circuit breakers is an important content. There are a large number of high-voltage circuit breakers in the power grid, and there are many detection items. The detecti...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06N3/02
CPCG06N3/02Y04S10/50
Inventor 周刚韩中杰傅进戚中译郭建峰杨波吕超尹琪
Owner STATE GRID ZHEJIANG ELECTRIC POWER CO LTD JIAXING POWER SUPPLY CO
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