Multi-channel synchronous testing device for high-voltage lightning arrester and using method of multi-channel synchronous testing device

Abstract

The invention relates to the technical field of high-voltage lightning arrester testing, and provides a multi-channel synchronous testing device for a high-voltage lightning arrester and a using method of the multi-channel synchronous testing device. The multi-channel synchronous testing device for the high-voltage lightning arrester comprises a user test operation table, arapid voltage-regulating power supply, a direct-current high-voltage generator and a plurality of lightning arrester test objects, wherein the user test operation table is connected with the rapid voltage-regulating power supply through a control cable or an optical cable; the output end of the rapid voltage-regulating power supply is connected with the power supply input end of the direct-current high-voltage generator through a power supply cable; the high-voltage ends of the plurality of lightning arrester test objects are connected in parallel and then are electrically connected with the output end of the direct-current high-voltage generator; and the low-voltage ends of the plurality of lightning arrester test objects and the grounding end of the direct-current high-voltage generator are connected in parallel and grounded, the low-voltage end of each lightning arrester is provided with a current sampling device, and each current sampling device is connected with a user test operation table through a collection cable. The invention aims to provide a multi-channel synchronous testing device for high-voltage lightning arresters and a using method of the multi-channel synchronous testing device. The multi-channel synchronous testing device can test a plurality of high-voltage lightning arresters at the same time.

Description

technical field [0001] The invention relates to the technical field of high-voltage arrester testing, in particular to a multi-channel synchronous testing device for high-voltage arresters and a method for using the same. Background technique [0002] In recent years, with the rapid construction of UHV and EHV transmission projects in China, there is a wide demand for UHV and HV arresters in various substations and converter stations. As we all know, arresters are very important protection devices in power equipment, especially in the process of power transmission, whether it is operating overvoltage or lightning overvoltage, they are limited by arresters directly or indirectly connected to the protected equipment. The protection characteristics of arresters It directly affects the selection of impact insulation level and air gap distance of substation equipment, and is the basis of substation insulation coordination. [0003] The high-voltage arrester is generally a metal ...

AI Technical Summary

Problems solved by technology

Especially for high-voltage arrester products above 200kV level, even if the composite jacket is used, the height of the arrester body is nearly two meters, which is often higher than the height of an adult, and the weight is very heavy. Frequent handling is very difficult. Big

However, as a test item such as the reference voltage and leakage current of the arrester, the overall pressure time is only less than 3 minutes, but before the high-voltage test, it is necessary to reliably connect various high-voltage non-halo wires, shielding and equalizing cover rings, control cables and measurement and safety. Grounding wires, etc., together with single test data recording, on-site manual grounding rod layout and safe area inspection, etc. often take more than 30 minutes at the fastest time, which is extremely labor-intensive and extremely efficient for high-voltage testers. low, and it is very easy to cause damage to equipment and test products or serious casualties due to negligence in operation

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