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Lossless lightning arrester temperature rise measurement system and method

A measurement method and lightning arrester technology, applied in computer-aided design, design optimization/simulation, calculation, etc., can solve problems such as the impact of residents and factory life and production activities, prevent thermal collapse, save costs, and improve measurement efficiency Effect

Pending Publication Date: 2021-10-26
STATE GRID LIAONING ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Frequent power outages and maintenance will also have an indirect impact on the normal life and production activities of residents and factories, and the hidden costs are immeasurable

Method used

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  • Lossless lightning arrester temperature rise measurement system and method
  • Lossless lightning arrester temperature rise measurement system and method
  • Lossless lightning arrester temperature rise measurement system and method

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Embodiment 1

[0076] like figure 1 As shown, the embodiment of the present invention discloses a method for measuring the temperature rise of a non-destructive arrester, including the following steps:

[0077] Step A. Establish a geometric model for the structure of the arrester, and input the environmental parameters, material parameters, electrical parameters, boundary conditions, etc. of the internal components of the arrester;

[0078] The specific process of establishing the geometric model of the lightning arrester structure is as follows:

[0079] The geometric model of each component of the arrester is established and coordinated to establish a complete structural geometric model of the arrester; the environmental parameters, electrical parameters, boundary conditions, etc. of the arrester components are input according to the physical meaning of each component.

[0080] The establishment of the structural geometric model of the lightning arrester includes the following structures:...

Embodiment 2

[0101] The present invention provides another embodiment. This embodiment discloses a method for measuring the temperature rise of a non-destructive arrester. The method includes the following steps:

[0102] Step A. Establish geometric models for a large number of arresters with different structures, and input the environmental parameters, material parameters, electrical parameters, boundary conditions, etc. of the internal components;

[0103] Step B. By using the thermoelectric coupling calculation method, while considering the interaction between the current and the temperature, a large number of transient curves of the internal component temperature changing with time are obtained;

[0104] Step C. Establishing a mathematical function model library of the temperature between internal components according to a large number of temperature transient curves;

[0105] Step D. For arresters of different structures, select the corresponding function model from the mathematical f...

Embodiment 3

[0108] The present invention provides another embodiment. This embodiment discloses a method for measuring the temperature rise of a non-destructive arrester. The method includes the following steps:

[0109] Step A. Establish geometric models for a large number of arresters with different structures, and input the environmental parameters, material parameters, electrical parameters, boundary conditions, etc. of the internal components;

[0110]Step B. By using the thermoelectric coupling calculation method, while considering the interaction between the current and the temperature, a large number of transient curves of the internal component temperature changing with time are obtained;

[0111] Step C. Establishing a mathematical function model library of the temperature between internal components according to a large number of temperature transient curves;

[0112] Step D. Based on the structure of the lightning arrester to be tested, in the mathematical function model libra...

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Abstract

The invention belongs to the technical field of lightning arrester temperature distribution detection, and particularly relates to a lossless lightning arrester temperature rise measurement system and method. The measurement method comprises the following steps: step A, establishing a geometric model for the lightning arrester structure, and inputting parameters of internal elements of the lightning arrester; step B, through a thermoelectric coupling calculation method, obtaining a transient curve of the temperature of the valve plate and the insulator changing with time; C, constructing a mathematical function model library between the temperature of the valve plate and the temperature of the insulator according to the temperature transient curve; and step D, feeding back the insulator temperature measured by the temperature measuring probe in work to the mathematical function model, and calculating the temperature of each zinc oxide valve plate in the lightning arrester. According to the invention, the temperature measurement probe does not need to be arranged in the lightning arrester, the temperature distribution of the lightning arrester is accurately measured under the normal operation condition, and the thermal collapse phenomenon of the lightning arrester is prevented, so that the safety coefficient of the lightning arrester is improved, the measurement mode of the lightning arrester is improved, and the measurement efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of temperature distribution detection of lightning arresters, and in particular relates to a non-destructive measuring system and method for temperature rise of lightning arresters. Background technique [0002] During the operation of the zinc oxide arrester, the main components such as the zinc oxide valve plate continue to generate losses, which are converted into heat energy, and the heat energy continues to spread to the surroundings through heat conduction, heat convection, and heat radiation, which leads to the continuous rise of the temperature of the arrester shell insulator. Under the normal working voltage of this zinc oxide arrester, there is a leakage current inside the zinc oxide. Under the long-term action of the leakage current, heating and aging will occur, and even thermal breakdown will occur. In the past, the traditional method was to place the temperature measuring probe directly between...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F119/08
CPCG06F30/28G06F2119/08
Inventor 崔巨勇耿莉娜韦德福王帅迟丹一李爽马一菱李冠华朱义东黄福存
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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