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Lightning arrester test method and lightning arrester test system

A surge arrester, full current technology, applied in the field of surge arresters, can solve problems such as complex operation and temperature effects

Active Publication Date: 2016-10-12
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention provides a lightning arrester testing method and system to solve the problem that the operation is complex and affected by temperature

Method used

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  • Lightning arrester test method and lightning arrester test system
  • Lightning arrester test method and lightning arrester test system
  • Lightning arrester test method and lightning arrester test system

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Embodiment Construction

[0069] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0070] The invention provides a method for testing a lightning arrester, referring to figure 1 , the method includes:

[0071] S11. Obtain multiple sampling data of the full current of the arrester;

[0072] Wherein, the full current of the arrester can be measured without contact through a current transformer, and the full current of the arrester can be obtained, and the current transformer can be a low-distortion current transformer. When the arrester is e...

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Abstract

The application provides a lightning arrester test method and a lightning arrester test system. The method comprises the following steps: getting multiple pieces of sampling data of the full current of a lightning arrester; filtering out interference signals in the multiple pieces of sampling data of the full current to get multiple filtered output currents; calculating out a resistive current fundamental component and a third-harmonic component according to the multiple filtered output currents; and calculating out the internal status indicators of the lightning arrester according to the resistive current fundamental component and the third-harmonic component. For charged test of the lightning arrester using the method, neither complex circuit nor voltage measurement is needed, and the operation is simple. Moreover, the temperature factor is considered in calculation of the internal status indicators of the lightning arrester, so test is no longer affected by ambient temperature. The problem that lightning arrester test is complex in operation and is affected by temperature is solved.

Description

technical field [0001] The invention relates to the field of lightning arresters, more specifically, to a testing method and system for lightning arresters. Background technique [0002] The basic function of the arrester is as an overvoltage protector. When the power transmission and transformation equipment is struck by lightning or the system has an overvoltage fault, it can quickly discharge the lightning current and limit the overvoltage of the equipment. The arrester is to ensure the safe and reliable operation of the power system and ensure the safety of personnel. important equipment. Testing the arrester is an important link in the operation and maintenance of the arrester. At present, the advantages of the live test of the arrester are more than those of the blackout test, so the method of live test of the arrester is adopted. [0003] In the process of lightning arrester live test, the current method used is the phase voltage compensation method, but this method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
CPCG01R31/00
Inventor 李谦邵建康周原文豹
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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