Dynamic protection constant value setting method and device, equipment and storage medium

A fixed-value and dynamic protection technology, applied in the direction of electrical equipment, measuring equipment, electric vehicles, etc., can solve the problem that distribution transformers with high overload capacity cannot withstand the impact and damage of long-term overload, and cannot effectively exert high overload capacity distribution transformers. Electric transformer etc.

Pending Publication Date: 2020-07-10
GUANGDONG UNIV OF TECH
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Problems solved by technology

[0004] This application provides a dynamic setting method, device and storage medium for the protection setting value, which solves the problem that the existing low-voltage main switch protection technology cannot effectively play the role of the distribution tran

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  • Dynamic protection constant value setting method and device, equipment and storage medium
  • Dynamic protection constant value setting method and device, equipment and storage medium
  • Dynamic protection constant value setting method and device, equipment and storage medium

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[0036] In order to enable those skilled in the art to better understand the solutions of the application, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only It is a part of the embodiments of this application, but not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of this application.

[0037] In recent years, the rural areas in the north have seasonal characteristics of electricity consumption. For example, the electricity load surges during the Spring Festival, causing short-term overloads of a large number of distribution transformers. In urban villages in southern cities, distribution transformers will also be used in high summer weather. The phenomenon of conti...

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Abstract

The invention discloses a dynamic protection constant value setting method, device and equipment and a storage medium, and the method comprises the steps: building a heat distribution model in a transformer, and researching temperature rise characteristics of the transformer according to the heat distribution model and a thermal circuit differential equation; and performing temperature field simulation on the transformer, calculating the temperature rise and the average temperature rise of the hottest point of a distribution transformer winding of the transformer, and comparing the temperaturerise and the average temperature rise with the temperature rise and the average temperature rise of the hottest point of the distribution transformer winding of mineral oil. According to the application, the technical problems that an existing low-voltage main switch protection technology cannot effectively play the role of the high-overload-capacity distribution transformer when the rated current value is set, and the high-overload-capacity distribution transformer cannot bear the impact of long-time overload and is damaged if the set current value is too high are solved.

Description

technical field [0001] The present application relates to the technical field of transformer overload current protection, in particular to a method for dynamically setting a protection value, a device and a storage medium. Background technique [0002] In recent years, electricity consumption in northern rural areas has seasonal characteristics. For example, during the Spring Festival, the electricity load surges, causing a large number of power distribution to be overloaded for a short time. In urban villages in southern cities, distribution transformers will also experience continuous Overload phenomenon, and the current distribution transformer protection device is over-current protection, although the load current and trip time can be adjusted, but still can not meet the continuous overload requirements of the distribution transformer, in severe cases, it will cause the fuse to blow, and even cause the transformer to fail. Insulation failure. [0003] The existing low-v...

Claims

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Application Information

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IPC IPC(8): G01R31/62G01K13/00G01K3/02G01R19/165G01R21/00G06F30/23G06F30/27G06N3/00G06N3/02
CPCG01K13/00G01K3/02G01R19/16504G01R21/006G06N3/006G06N3/02
Inventor 黄向成殷豪
Owner GUANGDONG UNIV OF TECH
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