Insulation safety instrument power frequency voltage withstanding breakdown positioning device and method

Abstract

The invention discloses an insulation safety instrument power frequency voltage withstanding breakdown positioning device and method. The device comprises current mutual inductors, a wireless voltage collecting and transmitting unit, wireless current collecting and transmitting units and a signal processing server, wherein the current mutual inductors are connected in low-voltage grounding loops of all insulation safety instruments to be experimented in series and are used for measuring the leakage current in a power frequency voltage withstanding measuring experiment; the wireless voltage collecting and transmitting unit is connected with the low-voltage sides of power frequency voltage dividers and is used for collecting and transmitting the voltage signals on the low-voltage sides of the power frequency voltage dividers; the wireless current collecting and transmitting units are connected the secondary sides of the current mutual inductors and are used for collecting and transmitting the current signals on the secondary sides of the current mutual inductors; the signal processing server is used for analyzing the signals collected by the current mutual inductors, the wireless voltage collecting and transmitting unit and the wireless current collecting and transmitting units and judging the breakdown position. By means of the insulation safety instrument power frequency withstand voltage breakdown positioning device and method, the breakdown position can be quickly positioned, so that the hidden insulation trouble brought out due to the fact that it is difficult to determine the breakdown position, repeated withstand voltage experiments are conducted, and thus insulation damage to a qualified insulation safety instrument is generated is avoided, and greater personal and equipment damage is avoided.

Description

technical field [0001] The invention relates to a power frequency withstand voltage breakdown positioning device and method for insulating safety tools. Background technique [0002] At present, my country's power grid is developing in the direction of large capacity and high voltage level. Insulation safety tools (such as insulating operating rods, safety ropes, electroscopes, etc.) equipment. Relevant standards and regulations such as the "State Grid Corporation Electricity Safety Work Regulations (Transformation Part)" require that preventive tests such as AC withstand voltage tests must be carried out on the insulation safety tools used within the specified period to ensure the safety of people and equipment . [0003] The AC voltage withstand test is a technical means to inspect and evaluate the withstand voltage capability of insulating safety tools and appliances. Due to the large number of insulating safety tools and appliances during the withstand voltage test, in ...

AI Technical Summary

Problems solved by technology

At this time, once a certain insulation safety tool breaks down, the test will be interrupted. At this time, the only way to find the broken down insulation safety is by visually observing the discharge arc position, smelling the smell, manually touching the heating point, and looking for the breakdown point. Tools

This method requires the test personnel to have rich experience to judge, and it is often difficult to accurately locate

At this time, only repeated withstand voltage tests can be performed, and the AC withstand voltage test is a kind of insulation destructive test. Repeated and long-term AC withstand voltage tests will cause insulation damage and cause insulation hazards to normal insulation safety tools. It may endanger the safety of personal and equipment during use

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