A Live Test System for Rod-Mounted Zinc Oxide Surge Arrester

Abstract

The invention discloses a live test system for a rod-loaded zinc oxide arrester, which includes a telescopic rod, a chuck rod and a test unit. The telescopic rod realizes its telescopic function through a stretching device, and the shaped hose can make the chuck part extend in any direction. The conductive rail is connected by a wire, and the conductive rail is electrically connected with the conductive column of the test unit to realize the electrical connection between the test unit and the zinc oxide arrester, and then the data is displayed on the display after being processed by the test unit. The beneficial effect of the device of the present invention is that the staff can directly conduct live tests on the zinc oxide arrester on the ground through the telescopic rod and the chuck rod, without the need for the staff to ascend the height to detect, and reduce the risk of falling from high altitude and electric shock; the test data is directly in the After being processed by the test unit, it is directly displayed on the display screen, which is easy to carry; the display screen can be turned over, and the staff can see the test data on the screen when they raise their heads, which is convenient for the staff to record the data.

Description

technical field [0001] The invention relates to the technical field of electrical appliances, in particular to a live test system for a rod-mounted zinc oxide arrester. Background technique [0002] The zinc oxide arrester live test is an important part of the equipment status evaluation. It mainly measures, decomposes, and analyzes the leakage current, resistive current component, and capacitive current component of the zinc oxide arrester during normal live work, thereby quantitatively analyzing The real-time situation of the zinc oxide arrester under the live working state provides a strong basis and data support for the power grid company's daily maintenance of the zinc oxide arrester in the substation. [0003] The quality of the zinc oxide arrester is reflected in the size of its resistive current. The traditional measurement method is to use two methods of measurement, wired and wireless. When using wired measurement, the following problems often occur: [0004] 1. ...

AI Technical Summary

Problems solved by technology

[0004] 1. Since the conventional zinc oxide surge arrester live tester is not equipped with its own charging power supply, each substation needs to be connected to the test power supply many times, and the power box needs to be manually carried along with the test site and the test instrument

In addition, due to the limited length of the test power supply cable, it is necessary to replace and overhaul the power supply box repeatedly;

[0005] 2. Since the height of the zinc oxide arrester far exceeds the height of the personnel, the testers need to carry the insulating ladder to connect the current signal line. During the process, the stairs need to be moved repeatedly, and additional auxiliary personnel are required to support the stairs during wiring to ensure the safety of the climbers;

[0006] 3. When working at heights, the distance between the wiring personnel and the main body of the zinc oxide arrester is very close, and if you are not careful, you will get an electric shock, and the risk is extremely high;

[0007] 4. When taking PT signals, only wired cables can be used. Due to the limited length of the cables, it is necessary to replace the PT terminal box wiring when testing lightning arresters in different areas. Repeated wiring may easily cause work errors, resulting in personal and equipment safety hazards, etc.

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