A detection fault diagnosis system and method for substation lightning arrester

Abstract

The invention discloses a fault detection and diagnosis system and method for a lightning arrester in a substation, comprising an elastic conductive plate with a mounting hole at one end, a guide hole with an isosceles trapezoidal longitudinal section arranged on the elastic conductive plate, and an isosceles trapezoidal structure arranged on the upper end of an insulating telescopic rod. The conductive rod, the upper part of the conductive rod is a conical structure, the size of the upper part of the conductive rod matches the inner cavity of the guide hole, and fine knife teeth are arranged on the peripheral side of the conical structure of the upper part of the conductive rod, the conductive rod The lower part is equipped with an automatic wire pressing and disconnecting mechanism. Not only only one person can move the wires to the metal parts of the arrester in a time-saving and labor-saving manner, but also the wires are in good contact with the metal parts, and there is no need to climb up to clean the rust on the metal parts. The labor intensity is very small and the wiring efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of measuring and detecting equipment for lightning arresters in substations, and in particular relates to a detection fault diagnosis system and method for lightning arresters in substations. Background technique [0002] The function of the arrester in the overhead line is mainly to release overvoltage such as lightning and protect the power grid and electrical equipment from instantaneous overvoltage hazards, thereby ensuring the safe and stable operation of transmission lines and electrical equipment. [0003] At present, 35kV, 66kV, 110kV, 220kV, and 550kV voltage level surge arresters are installed outdoors. Due to long-term erosion by moisture, rain, snow, and corrosion, metal parts are easily corroded and extremely difficult to clean. When measuring the conductance current of the arrester, it is difficult to accurately measure the conductance current of the arrester due to the influence of rust, which...

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Problems solved by technology

[0003] At present, 35kV, 66kV, 110kV, 220kV, and 550kV voltage level surge arresters are installed outdoors. Due to long-term erosion by moisture, rain, snow, and corrosion, metal parts are easily corroded and extremely difficult to clean.

When measuring the conductance current of the arrester, it is difficult to accurately measure the conductance current of the arrester due to the influence of rust, which leads to poor contact, which brings inconvenience to the test work, and even causes misjudgment

The traditional testing method requires workers to climb high to clean up the rusty metal parts. The operation requirements are relatively high, and at least two people are needed to bind the wires to the metal parts. The labor intensity is very high, the efficiency is low, and After cleaning, it is necessary to bind the test wires on the metal parts. Due to the huge test current, the diameter of the wires is large and the quality of the wires is large. It is easy to cause the binding not tight enough. During operation, the binding place will heat up, or even burn the wires, affecting the test effect. and test results

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