Prediction method for thermal tripping time of low-voltage circuit breaker

A low-voltage circuit breaker and prediction method technology, which is applied in the direction of instrumentation, design optimization/simulation, calculation, etc., can solve problems such as uneven data distribution, regression model overfitting, and sample redundancy characteristics, so as to improve generalization ability, The effect of reducing the impact

Pending Publication Date: 2021-12-10
国网河北省电力有限公司雄安新区供电公司 +2
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Problems solved by technology

However, when using production data for modeling, the data is usually unevenly distributed and concentrated near the central value, which will lead to redundant characteristics of the modeled samples, and the regression model is prone to overfitting

Method used

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  • Prediction method for thermal tripping time of low-voltage circuit breaker
  • Prediction method for thermal tripping time of low-voltage circuit breaker
  • Prediction method for thermal tripping time of low-voltage circuit breaker

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Embodiment Construction

[0073] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as any limitation of the application, its application or uses. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0074] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, a...

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Abstract

The invention discloses a prediction method for the thermal tripping time of a low-voltage circuit breaker. The method comprises the following steps: applying a weighted kernel partial least square algorithm to the production of the low-voltage circuit breaker, acquiring the production data of qualified products of the circuit breaker, establishing a thermal tripping time prediction model, and predicting the thermal tripping time according to the acquired data of the thermal regulation process of the circuit breaker, so that real-time calculation of the thermal tripping time is realized. The invention provides a thermal tripping time prediction model based on a weighted kernel partial least squares algorithm aiming at the unbalanced characteristic of circuit breaker production data. According to the method, the samples are weighted according to the distribution and statistical characteristics of the production data, the influence of uneven sample distribution on the modeling precision is reduced, and the generalization ability of the model is improved.

Description

technical field [0001] The invention relates to a method for predicting the thermal tripping time of a low-voltage circuit breaker, belonging to the technical field of low-voltage circuit breakers. Background technique [0002] The low-voltage circuit breaker is the main switching device in the low-voltage power supply and distribution system. It can cut off the current in time to protect the circuit in the case of overload or short circuit. It is widely used in factories, household appliances and other fields. Thermal tripping time is a key indicator of circuit breaker product quality, and its length is related to the characteristics of the bimetal strip, tripping stroke and tripping force. The detection quantities of key components such as bimetal strips and springs obtained through laboratory testing can be simulated to calculate the thermal trip time, but in actual production, the above detection quantities cannot be monitored in real time, so the thermal trip time canno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06F30/20
CPCG06F30/20G06F18/214
Inventor 李振伟王晶赵天翊赵树军
Owner 国网河北省电力有限公司雄安新区供电公司
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