Pressurized wire support device for arrester testing

Abstract

The invention discloses a supporting device of a voltage applying line for a lightning arrester test. The supporting device comprises an insulation pole (2) and a fitting (3) arranged at the top end of the insulation pole (2), wherein the insulation pole (2) is parallel to a lightning arrester (1). The supporting device is characterized in that the fitting (3) comprises a long contact (31), wherein one end of the long contact (31) is connected with the lightning arrester (1) perpendicularly, and the other end of the long contact (31) is connected with the voltage applying line (4). By means of the supporting device of the voltage applying line for the lightning arrester test, the distance between the lightning arrester and the voltage applying line can be prolonged, the voltage applying line and the lightning arrester are arranged in a mode that a 90-degree included angle is formed between the voltage applying line and the lightning arrester, and therefore, the accuracy of a test value can be improved greatly. In addition, the supporting device has the advantages of being simple and compact in structure, low in cost, convenient to install and the like.

Description

technical field [0001] The invention relates to the technical field of electric power, in particular to a pressurized line support device used for lightning arrester tests. Background technique [0002] In the power system, under normal circumstances, the high-voltage lead wires and high-voltage output terminals are exposed to the air, and there are certain stray currents and leakage currents flowing through them to the ground, to the insulating support and to adjacent equipment, which is very important for the arrester test. The results are huge. [0003] In order to reduce the influence of stray capacitance, the most convenient way to improve the test method is to change the distance between the high-voltage output line and the arrester body and install the high-voltage output line and the arrester body at an angle of 90°, which can greatly improve the test value. the accuracy. Therefore, when doing the leakage current test of the arrester, in order to ensure the accurac...

AI Technical Summary

Problems solved by technology

Since the off-the-shelf insulating rod fittings on the market cannot rotate and are short (the longest contact length is no more than 15cm), it is difficult to ensure that the pressure line and the arrester body form an angle of 90°, and at the same time, the pressure line and the metal shell of the arrester are also It is difficult to ensure a sufficient distance. When the voltage level is high (110kV and above voltage level), the test values ​​vary greatly between phases and individuals, and the resulting error is particularly obvious; Due to the short size of the contacts during measurement, it is necessary for the test personnel to repeatedly move the test instrument, resulting in low work efficiency

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