Integrated handcart with phase testing function and bus grounding function for high-voltage switch cabinet

Abstract

The invention discloses an integrated handcart with a phase testing function and a bus grounding function for a high-voltage switch cabinet. The integrated handcart comprises a handcart frame, a bus side electricity-conducting arm, a line side electricity-conducting arm, a bus side grounding switch, a valve opening mechanism, a bus grounding switch operating shaft, a handcart pushing mechanism and a high-voltage induction insulator. The handcart frame comprises a bottom frame and a vertical frame, wherein the vertical frame is vertically fixed to the bottom frame; a plurality of idler wheels are arranged on the bottom frame so that the handcar can move in the switch cabinet; the valve opening mechanism is fixed to the bottom frame, and the line side electricity-conducting arm is fixedly arranged above the valve opening mechanism; the bottom frame is further provided with the pushing mechanism so that the handcart can be pushed into or pulled out of the switch cabinet conveniently; the bus side grounding switch, the bus grounding switch operating shaft and the high-voltage induction insulator are arranged on the vertical frame; the bus side electricity-conducting arm is arranged on the high-voltage induction insulator. The integrated handcart with the phase testing function and the bus grounding function for the high-voltage switch cabinet has the advantages of being capable of improving safety of an operator and testing efficiency, reducing safety risks, and lowering cost, being safe and reliable and the like.

Description

technical field [0001] The invention relates to an integrated handcart for high-voltage switchgear with the functions of phase verification and busbar grounding. Background technique [0002] With the development of the power system, high-voltage switchgear is more and more widely used in the power system, and its standardized operation is directly related to the safe operation of the power system. The power grid company's operation management regulations: the side baffles of the bus bars in the operating switch room must not be opened, and the rear cabinet doors of the operating switch cabinets must not be opened, resulting in the failure of phase verification of the switch cabinet. Busbar grounding is also a problem that has become a problem in operation and operation. Now, when operating busbar grounding, the operator has to climb to the top of the cabinet and remove the top cover to test the electricity and connect the grounding wire. However, the switchgear does not ha...

AI Technical Summary

Problems solved by technology

However, the switchgear does not have a grounding pile head and the ground wire cannot be connected, so it can only be temporarily connected to the beam of the rear cabinet door, and the space of the insulating sheath in the busbar room is narrow and the ground wire cannot be well contacted. Not effective in protecting staff

[0003] In the prior art, the general nuclear phase trolley cannot realize the mutual comparison of voltages between different power sources, let alone the comparison of voltages between different phases

At present, the high-voltage switchgear is designed to be separated into compartments, which improves the safety of the equipment. However, due to the inherent reasons of the equipment structure, the busbar grounding is a difficult problem. The operator must climb to the top of the cabinet and remove the top cover to test the electricity and connect the grounding. Wire

However, the switchgear does not have a grounding pile head and the ground wire cannot be connected, and there is an insulating sheath in the busbar room, so the busbar space is narrow and the ground wire cannot be in good contact. In actual work, the grounding wire is often placed in the busbar room, and the poor contact cannot protect personnel. safe role

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