AC/DC arrester team-work tester

Abstract

The invention discloses an AC/DC lightning arrester combined action tester which includes a power frequency power supply, a back-to-back analog device, a multiple waveform generator and an impact current generator, wherein, ground terminals of the power frequency power supply, the back-to-back analog device, the multiple waveform generator and the impact current generator are grounded in parallel; power supply ends of the power frequency power supply, the back-to-back analog device, the multiple waveform generator and the impact current generator are switched and connected in parallel by a switch; a voltage divider and a specimen parallelly connected with the voltage divider, wherein, the voltage divider and the specimen are parallelly connected among the parallel connection ends and the ground terminals of the power frequency power supply, the back-to-back analog device, the multiple waveform generator and the impact current generator which are switched by the switch; an oscillograph which collects output signals output by output ends of of the power frequency power supply, the back-to-back analog device, the multiple waveform generator, the impact current generator and the voltage divider, and transmits the collected signals to a combined action measuring and controlling system.

Description

technical field [0001] The invention relates to a test device for a lightning arrester, in particular to a combined action test device for an AC and DC lightning arrester. Background technique [0002] The combined action test (action load test and temporary overvoltage withstand test) is a key test to verify the thermal stability of the arrester and the ability to withstand temporary overvoltage, which is related to the safety and reliability of the operation of the arrester. At present, a lot of work has been done on the joint action test of AC arresters at home and abroad, and there are national standards and IEC standards that can be used as the test basis. For DC surge arresters, due to the complexity and diversity of operating voltage and fault conditions, there is no unified national or international standard. The joint action test equipment of AC and DC arresters at home and abroad is currently only for AC arresters or joint action test equipment for DC arresters. T...

AI Technical Summary

Problems solved by technology

For DC surge arresters, due to the complexity and diversity of operating voltage and fault conditions, there is no unified national or international standard.

At present, the joint action test equipment of AC and DC arresters at home and abroad is only for AC arresters or for DC arresters. There is no comprehensive test device for both AC arresters and DC arresters.

Moreover, the function of the joint action test equipment of the DC arrester is relatively single, the equipment capacity is small, and the parameters are low, so it is difficult to effectively carry out the joint action test research of the DC arrester.

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