Lightning arrester discharge counter comprehensive calibration instrument and calibration method

Abstract

The invention relates to a lightning arrester discharge counter comprehensive calibration instrument. The lightning arrester discharge counter comprehensive calibration instrument adopts the structure as follows: a power supply unit, an LCD liquid crystal display unit and a key operating unit are connected with a singlechip microcontroller main control unit at the same time; the singlechip microcontroller main control unit is connected with a counter milliammeter inspection unit and a counter action times inspection unit at the same time. The lightning arrester discharge counter comprehensive calibration instrument can automatically output lightning simulating shock waveform to a counter, and through operation of the singlechip microcontroller main control unit, whether a calibration count displayed by a display screen and counter action times are consistent or not is checked so as to check whether the counter action times are abnormal or not; on a milliammeter calibration function interface, a scale displayed by a lightning arrester discharge counter milliammeter is compared with output current displayed by the calibration instrument to check whether a significant difference exists therebetween or not, so that whether the scale displayed by the lightning arrester discharge counter milliammeter is accurate or not can be judged; the labor intensity of field test personnel is reduced; the reliability and the accuracy of data displayed by an online lightning arrester monitoring instrument are improved.

Description

technical field [0001] The invention relates to an on-site debugging device for an arrester counter in a power system, in particular to a comprehensive calibrator and a calibration method for an arrester discharge counter in a power system, which is mainly used for on-site calibration of an arrester discharge counter in a power system and belongs to the field of electric power applications. Background technique [0002] In recent years, with the gradual increase of online monitoring methods for power system equipment, the discharge counter of the power system overvoltage protector-arrester has developed from a single recording of the number of arrester operations to an online test that can monitor whether the arrester is defective at the same time. instrument. At present, we only use a rod-type counter calibrator for lightning action counting calibration for arrester discharge counters, but DL / T393-2101 "Test Regulations for State Maintenance of Power Transmission and Transf...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems existing in the above-mentioned prior art, and provides a comprehensive calibrator for arrester discharge counters, which solves the problem that the internal leakage mA meter of the arrester counter cannot be checked and tested, and the instrument can timely verify the accuracy of the counter ammeter The speed and the number of actions of the arrester counter to ensure the safe and reliable operation of the power system

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