Multifunctional relay protection polarity test operating rod

Abstract

The invention relates to a multifunctional relay protection polarity test operating rod which comprises a copper hook, a metal spike, a conductive screw, a wire, an operating ejector rod and a wiring terminal. The wire is arranged in the operating ejector rod, one end of the conductive screw coaxially extends into the operating ejector rod and is connected with an end of the wire, the metal spike is coaxially fixedly arranged at other end of the conductive screw, the copper hook is axially meshed with certain portions of the conductive screw and the metal spike in a threaded manner, and the certain portions of the conductive screw and the metal spike are mounted on the outside of the operating ejector rod. The multifunctional relay protection polarity test operating rod has the advantages that the multifunctional relay protection polarity test operating rod is simple in structure, scientific in design, easy to manufacture, low in cost and convenient to operate and use, the accuracy of detection results can be guaranteed, polarity checking work can be quickly, easily and conveniently carried out on relay protection secondary circuits by the multifunctional relay protection polarity test operating rod, safety risks when operators climb outdoor high-voltage on-off equipment can be prevented, the difficult problem of inconvenience in checking the polarity of existing secondary circuits due to narrow internal spaces of indoor switch cabinets can be solved, the multifunctional relay protection polarity test operating rod is wide in service range, and the work efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of relay protection in electric power engineering, and relates to an operating rod, in particular to a multifunctional relay protection polarity testing operating rod. Background technique [0002] At present, a large number of 110kV outdoor high-voltage breaking devices are used in the 110kV substations in operation. The existing primary equipment is high from the ground, so the operator needs to climb up when detecting the polarity, which is not only inconvenient, but also causes personal injury to the operator. Potential threats to safety; in addition, with the improvement of primary power equipment manufacturing and insulation level, the structure of indoor switch cabinets is becoming more and more dense, and the internal space of the cabinet is becoming smaller and smaller, which poses a challenge for relay protection staff to check the secondary The polarity of the secondary circuit brings a lot of inc...

AI Technical Summary

Problems solved by technology

[0002] At present, a large number of 110kV outdoor high-voltage breaking devices are used in the 110kV substations in operation. The existing primary equipment is high from the ground, so the operator needs to climb up when detecting the polarity, which is not only inconvenient, but also causes personal injury to the operator. Potential threats to safety; in addition, with the improvement of primary power equipment manufacturing and insulation level, the structure of indoor switch cabinets is becoming more and more dense, and the internal space of the cabinet is becoming smaller and smaller, which poses a challenge for relay protection staff to check the secondary The polarity of the secondary circuit brings a lot of inconvenience; at the same time, when the existing test methods and test equipment are tested, most of the equipment is tested on the cables on both sides of the switch of the high-voltage switchgear, resulting in frequent occurrence of poor contact. lead to inaccurate test results

Therefore, the existing test methods and test equipment can no longer meet the actual needs of the site.

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