Abnormal noise inspection method and inspection device for high-voltage sealed switchgear or sealed busbar
A technology of high-voltage sealing and inspection method, applied in the direction of testing dielectric strength, etc., can solve the problems of loose screw mechanism in the switch cabinet, difficult to distinguish, abnormal noise, etc., to avoid blind repair and inspection, improve productivity, and ensure safe operation. Effect
Inactive Publication Date: 2016-06-01
STATE GRID CORP OF CHINA +1
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Problems solved by technology
Another is that the screw mechanism in the switch cabinet is loose, and under the action of electromagnetic force, it will emit abnormal sound.
This abnormal sound is caused by the closed operation of the high-voltage sealed switchgear and the sealed busbar; it is difficult for personnel to distinguish the specific cause of the abnormal sound during routine maintenance inspections
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[0032] like figure 1 , 2. As shown in 3, a device for checking abnormal sound of a high-voltage sealed switchgear or a sealed bus bar, including: an AC booster, an AC booster, a humidity controller, and a high-frequency signal receiver. The AC booster, The input ends of the AC booster and the humidity controller are respectively connected to the power supply through a switch, the output high voltage end of the AC booster is connected to the middle part of the tested insulating support bottle 9, and the output end of the AC booster is connected to the tested insulating support bottle 9; the humidifier of the humidity controller is arranged in the middle position close to the tested insulating support bottle 9; the AC booster is regulated by the current booster to add a When there is abnormal sound, the current passes through, and the ground wire JDX forms a current loop.
[0033] The AC booster is connected to the voltage regulator 3 by a 220-volt AC power supply through a kn...
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The invention relates to the technical field of auxiliary devices for electric power overhaul, and discloses a detection method and device for abnormal sounds of a high-voltage sealing switch cabinet or a sealing bus. The detection device comprises an alternating current booster, a high-frequency signal receiver, an alternating voltage booster and a humidity controller. The alternating voltage booster, the alternating current booster and the input end of the humidity controller are respectively connected with a power supply through switches, the high-voltage output end of the alternating voltage booster is connected to the middle portion of a tested insulation supporting bottle, the output end of the alternating current booster is connected to the two ends of the tested insulation supporting bottle, and a humidifier of the humidity controller is arranged close to the middle of the tested insulation supporting bottle. According to the detection method and device, a gas discharging process is provided for an abnormal power unit, a light, sound and heat effect is reproduced, maintenance staff can clearly and quickly know the position of pulse discharging or discharging abnormal sounds, workload of repeated power cut and maintenance of the maintenance staff is reduced, and safe operation of the power unit is improved.
Description
technical field [0001] The invention relates to the technical field of auxiliary setting for electric power maintenance, in particular to a method and device for checking abnormal sound of high-voltage sealed switch cabinets or sealed busbars for operation and maintenance of power systems, power plants and substations. Background technique [0002] At present, the GG series high-voltage switchgear in my country has been gradually replaced by the Z series of sealed high-voltage. Since the Z-type sealed high-voltage switchgear and the sealed busbar have the characteristics of perfect five-proof machine lock, convenient switch pre-test, convenient maintenance, and long cycle, it should be used now. Universal application. However, the sealed switchgear and the sealed busbar still have a heat dissipation room in consideration of heat dissipation. After long-term operation and the influence of the climate environment, the insulating material and the insulating support bottle are su...
Claims
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IPC IPC(8): G01R31/12
Inventor 卢会东陈永昌张旭张洋洋吴蓉杨晓勇李会乐李晓利刘强许冬冬尤晓彬刘光丽任少波卢科峰王世果
Owner STATE GRID CORP OF CHINA