Device for measuring electrical performance of zinc oxide arrester

Abstract

The invention relates to a device for measuring electrical performance of a zinc oxide arrester. The device comprises a wired measurement unit, a wireless measurement unit, a sensor module for measurement, a signal processing module, a main control module and a power module, wherein the wired measurement unit comprises an analog-digital conversion module electrically connected with the sensor module in a wired manner; the wireless measurement unit comprises a wireless module; the wireless module acquires data directly from the sensor module through a wireless signal and transmits the data to the signal processing module through the wireless module; the signal processing module is used for calculating and analyzing to obtain electrical data of the zinc oxide arrester and transmitting the electrical data to the main control module; the power module is used for supplying power to the whole device. The device can combine two modes of live measurement and online measurement, is simple and convenient in wiring, and can perform real-time operation analysis and display on measured data.

Description

technical field [0001] The invention relates to the field of charging control, in particular to a device for measuring the electrical performance of a zinc oxide arrester. Background technique [0002] Zinc oxide arrester is an electrical product used to protect various electrical equipment in the power system from overvoltage damage, and has good protection performance. However, zinc oxide arresters will age, be damaged or fail, which may cause large-scale electrical accidents, damage to electrical equipment, and power outages on power supply lines. Therefore, it is very necessary to test the performance of zinc oxide arresters in the line. [0003] At present, zinc oxide arresters are mainly tested when they are charged, mainly in the following way: first, use the sampling unit to remove the leakage current of the zinc oxide arrester, calculate the peak value, effective value, and resistive current value of the current, and then collect the voltage Transformer secondary ...

AI Technical Summary

Problems solved by technology

Live measurement adopts the method of manual inspection. The tester carries the measuring instrument and places the current measuring clip on the upper and lower ends of the arrester discharge counter to obtain the leakage current of the zinc oxide arrester. At the same time, the wired or wireless method is used to obtain the voltage transformer. voltage signal, so as to measure the relevant parameters of the zinc oxide arrester. When the measurement is over, the tester turns off the instrument and removes the relevant connection; online monitoring needs to place a monitoring unit at each measurement point in advance, and then it can be installed on the host computer in the background. For data measurement, the placement of the monitoring unit needs to be carried out in the event of a power outage. Each monitoring unit communicates with the host using wireless, optical fiber or GPRS. Once the installation is completed, it is difficult to disassemble, so the entire system exists. There are disadvantages such as huge investment, complex system, and difficult calibration, and there is no way to monitor on zinc oxide arresters without monitoring units

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