Epoxy pouring type insulating tube type bus fault detection device and method
A technology of epoxy casting and busbar failure, applied in measuring devices, testing dielectric strength, analyzing solids using sonic/ultrasonic/infrasonic waves, etc., can solve problems such as increasing maintenance costs, reducing maintenance efficiency, lack of evidence, etc., to achieve precise design , The effect of reducing operation and maintenance costs and avoiding faults and missed judgments
Active Publication Date: 2019-07-12
STATE GRID HUBEI ELECTRIC POWER RES INST +1
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Problems solved by technology
Traditional detection methods often require power outages or even offline detection, which greatly reduces maintenance efficiency and increases maintenance costs; while online detection has problems such as single means and insufficient evidence, which may lead to misjudgments or missed judgments
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[0033] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.
[0034] Epoxy cast insulating tubular busbars are widely used in substations, power plants and other occasions due to their advantages such as strong current carrying capacity, high mechanical strength, and excellent electrical insulation performance. The insulating layer of the epoxy cast insulated tubular busbar is epoxy resin / insulating paper composite material. When there is a defect in the insulating layer, it will cause local electric field concentration and cause partial discharge. The discharge will cause the epoxy resin and insulating paper to Decomposition, the small molecules produced escape in the form of gas, which causes the further development of defects and forms a vicious circle, and the escaped gas will gradually increase. However, the end structure of the epoxy cast insulating tubular ...
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The invention provides an epoxy pouring type insulating tube type bus fault detection device and method. The detection device comprises a connecting and fixing part, a gas collecting part, a gas sampling part and a gas chromatograph, the connecting and fixing part is used for fixing the device at a gas outlet reserved at an insulating tube type bus joint part and connecting the device with the gasoutlet; the gas collection part is used for collecting gas escaping from the insulating layer of the insulating tube type bus; the gas sampling part is used for quantitatively extracting gas stored in the gas collecting part so as to perform gas analysis; and the gas chromatograph is used for carrying out gas chromatographic analysis on the collected gas sample, and carrying out ultrasonic flaw detection and partial discharge detection on the insulating tube type bus when the components and the content of the gas sample are changed. Periodic power failure maintenance and overhaul are not needed, faults can be found and eliminated in time in the early stage of fault development, and the operation safety and reliability of the insulating tube type bus are effectively improved.
Description
technical field [0001] The invention relates to the technical field of power transmission and distribution equipment, in particular to an epoxy cast insulating tubular busbar fault detection device and method. Background technique [0002] With the rapid development of the national economy, the demand for electricity in the whole society is increasing day by day, the capacity of the main transformer in the substation is increasing, and the rated current of the low-voltage incoming line side of the transformer is also increasing. The traditional rectangular busbar is getting more and more technically and structurally It is becoming more and more difficult to meet the requirements of busbar heating and short-circuit electric power. As a new type of power transmission equipment replacing traditional rectangular busbars, insulated tubular busbars have large carrying capacity, high mechanical strength, strong electrical insulation performance, and space saving. With significant t...
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Login to View More IPC IPC(8): G01R31/12G01N29/04G01N30/02
CPCG01N29/04G01N30/02G01R31/12
Inventor 阮羚任想朱思瑞李文佩刘睿李鹏虎
Owner STATE GRID HUBEI ELECTRIC POWER RES INST