Novel energized arrester tester and arrester detection method

Abstract

The invention discloses a novel energized arrester tester and an arrester detection method. The novel energized arrester tester comprises an energized arrester tester main machine, an insulating operating rod and a contact type voltage probe, wherein the contact type voltage probe is used for measuring voltage phase data of a tested device and sending the voltage phase data to the energized arrester tester main machine, and the contact type voltage probe is connected to the top end of the insulating operating rod. The contact type voltage probe comprises an outer shielding shell, an internal power source, an electric field sensor and a wireless modulation transmitting device. Due to the fact that the novel energized arrester tester can directly measure an electric field of the surface of a bus connected with an arrester to obtain a voltage phase, make zero-distance contact with a measured position, and is large in signal to noise ratio, a more accurate phase angle can be obtained through the arrester detection method compared with phase angles obtained through other methods, and accuracy and credibility of energized testing of the arrester can be improved; wiring is easy, PT secondary terminals do not need to be opened, a user does not need to worry about an accident caused by wrong wiring, the error of voltage phases of the PT secondary terminals does not need to be taken into consideration, none of test wires needs to get close to a high-voltage wire, and better safety is achieved.

Description

technical field [0001] The invention relates to the technical field of lightning arrester detection, in particular to a lightning arrester electrification tester and a lightning arrester detection method. Background technique [0002] At present, metal oxide arresters (MOA) are generally used as arresters in power systems. Due to long-term operation at high voltages, they are subjected to many overvoltage shocks, and valve aging and moisture deterioration are very common. At present, the main means of detection of metal oxide arresters are: power failure preventive test, full current online monitoring, full current and resistive current live detection, infrared thermal imaging temperature measurement and other methods. Because the power failure preventive test can only be detected during MOA installation or overhaul power failure, and the status of MOA cannot be obtained in time; the application of full current online monitoring and infrared thermal imaging temperature measu...

AI Technical Summary

Problems solved by technology

[0008] However, if the arrester is often checked for power outages, the defects of the arrester in use cannot be found in time.

Moreover, it will cost a lot of manpower and material resources and unnecessary operation, which will not only cause maintenance damage to the power grid, but also cause certain economic losses due to power outages.

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