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Gasinsulation combined electric device local discharge analog experimental apparatus and experimental method

A technology for simulating experimental devices and gas-insulated combinations, which is applied in the direction of measuring devices, instruments, measuring electricity, etc.

Inactive Publication Date: 2005-09-28
CHONGQING UNIV
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Problems solved by technology

Such as Tsinghua University, Xi'an Jiaotong University and Chongqing University in China, Britain, Germany, Japan and other countries abroad, but it is still in the preliminary stage of research and application

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  • Gasinsulation combined electric device local discharge analog experimental apparatus and experimental method
  • Gasinsulation combined electric device local discharge analog experimental apparatus and experimental method
  • Gasinsulation combined electric device local discharge analog experimental apparatus and experimental method

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Embodiment Construction

[0014] Partial discharge simulation experiment device and experiment method of gas-insulated composite electrical appliances, the detection method of the PD signal is as follows: adjust the induction voltage regulator (1), slowly increase the experimental voltage, first measure the maximum externally applied experimental voltage and the initial PD voltage, and then Apply the initial PD voltage U st 1.2 to 1.5 times the voltage, the GIS simulation experiment device (5) will generate PD signal pulses under artificial defects, and the PD pulse will excite ultra-high frequency electromagnetic wave signals, and propagate in the simulation experiment device with waveguide characteristics; built-in and external The ultra-high frequency sensors (6, 7) receive the ultra-high frequency electromagnetic wave signals (including transverse electric wave TE, transverse magnetic wave TM and transverse electromagnetic wave TEM) in the GIS simulation experiment device (5) and leak into the surro...

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Abstract

The simulating experiment equipment for local discharge in gas insulated combined electric appliance consists of inducing pressure regulator, no-corona experiment transformer, no-local discharge protecting resistor, standard capacity voltage divider, GIS simulating experimental device, internal UHF antenna sensor and external UHF antenna sensor, microstrip line filtering amplifier, intelligent UHF multiplexer, wide band high speed ultrahigh capacirty digital storage oscilloscope and microcomputer. The simulating experiment equipment and method for local discharge in gas insulated combined electric appliance may be used for simulating various defaults inside GIS to obtain PD experiment data reflecting various kinds of insulation defaults and distinguish the PD modes of the insulation defaults in GIS, so that the present invention may be used widely in relevant theoretical analysis and application research.

Description

technical field [0001] The invention relates to a partial discharge experiment of a gas-insulated combined electrical appliance, in particular to a GIS partial discharge artificial simulation experiment device and an experiment method. Background technique [0002] GIS has the advantages of high dielectric strength, stable operation, small footprint and small maintenance workload, and has been more and more widely used in the construction and renovation of large and medium-sized cities. However, from the operation situation in the past ten years, there have been many problems in the use of GIS at home and abroad, among which insulation faults are the main ones. The insulation fault is mainly caused by the PD generated by various long-term defects in the GIS, which leads to SF 6 Caused by deterioration of gas insulation properties. Because the detection of PD is seriously affected by the surrounding electromagnetic interference, the weak GIS partial discharge pulse signal i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/02G01R31/12
Inventor 唐炬张晓星周泉杜林李剑廖瑞金王有元许中荣孙才新
Owner CHONGQING UNIV
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