A hand-held lightning arrester counter automatic tester

Abstract

The invention discloses an automatic tester of a hand-held arrester counter. The automatic tester comprises a shell, wherein a single chip microcomputer controller, a key module, a liquid crystal display module, a discharge circuit, a power supply module, a battery, a drive circuit and a discharge switch are arranged in the shell separately; a display screen and a key are arranged on the shell separately; and the display screen is connected with the liquid crystal display module. The automatic tester has the advantages that the work efficiency can be greatly improved and the use fatigue of an operator is reduced by adopting an automatic discharge function. An automatic mode is selected and required discharge frequency is input when the operator carries out multiple tests on an all-station arrester, discharging only needs to be executed, and waving of the arrester or counting of the discharge frequency does not need to be considered, so that the worry of over-discharging is avoided.

Description

technical field [0001] The invention relates to an on-site debugging device for a counter of a lightning arrester in a power system, in particular to a hand-held automatic tester for a counter of a lightning arrester. Background technique [0002] The arrester can quickly act to discharge the overvoltage when the power system is overvoltage, so as to achieve the purpose of protecting the power system. At present, many arresters are installed in substations of various voltage levels, and the monitoring of the number of operations of arresters is inseparable from arrester counters. According to the provisions of the preventive test procedure for electrical equipment (Q / CSG112702-2011), the counter needs to be tested 3-5 times before the annual thunderstorm season or when there is a suspected defect, and it should operate normally. In addition, during the production process or acceptance process of the arrester, repeated strict verification of the counter is required. At pres...

AI Technical Summary

Problems solved by technology

In this situation, the operator often needs to hold the discharge rod of the arrester counter to discharge the arrester counter repeatedly. This method is time-consuming and labor-intensive, and it is easy to overshoot the number of discharges, resulting in the need to readjust the arrester counter in the whole station.

[0005] 2. No reset function

[0006] The existing hand-held surge arrester discharge counter calibrator does not have the function of counter clearing, and in order to facilitate the management of the on-site arrester counter, sometimes it is necessary to uniformly adjust the number of arrester actions indicated by all counters to zero, and the existing hand-held arrester If the discharge counter calibrator wants to achieve this goal, it can only manually discharge the discharge counter of the arrester until the counter dial returns to zero. Sometimes a single counter needs to be discharged hundreds of times, which is too much work.

[0007] 3. There is no human-computer interaction interface

[0008] The existing hand-held surge arrester discharge counter calibrator does not have a good man-machine interface, for example, there is no digital display interface, and the number of calibrations cannot be recorded; there is no input button, and it is impossible to make a more intelligent design for the calibrator; there is no sound feedback , unable to prompt information such as failure or completed

In short, the lack of human-computer interaction interface cannot make a strong guarantee for the accuracy and speed of calibration

[0009] 4. The design of the telescopic conductive rod is dangerous

[0010] The existing hand-held surge arrester discharge counter calibrator is only equipped with a telescopic conductive rod, which will cause a lot of inconvenience to the operator during use. First, the use of this design requires the operator to wave the calibrator for repeated discharge calibration, which will cause Make the operator feel tired; second, the telescopic conductive rod is easy to touch the surrounding equipment or personnel by mistake, causing safety problems

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