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A technology of partial discharge and gas discharge, applied in measuring devices, measuring current/voltage, measuring electricity, etc., can solve problems such as insufficient monitoring information, and achieve high detection sensitivity, good selectivity and precision, and high scalability value Effect
Active Publication Date: 2016-06-01
WUHAN UNIV +2
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[0006] The purpose of the present invention is aimed at the existing SF 6 The problem of insufficient monitoring information of the fault simulation experiment device of gas-insulated electrical equipment is to provide an experimental simulation device that uses multiple sensors to jointly monitor the PD signal of gas-insulated electrical equipment. The device can simulate SF under AC conditi
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Embodiment 1
[0030] In the figure: 1. Power supply voltage regulating console, 2. No partial discharge power frequency test transformer, 3. No partial discharge protection resistor, 4. Power frequency capacitor voltage divider, 5. Coupling capacitor, 6. Detection impedance, 7. Gas discharge chamber, 8. Artificial insulation defect model, 9. Fluorescent optical fiber sensor, 10. Optical fiber coupler, 11. Ordinary optical fiber, 12. Gas chromatography mass spectrometer, 13. Optical fiber adapter, 14. Photomultiplier tube, 15. UHF microstrip antenna, 16. digital storage oscilloscope, 17. high-voltage guide rod, 18. high-voltage bushing, 19 ellipsoidal top cover, 20. screw, 21. flange, 22. stainless steel columnar cavity, 23. vacuum Pressure gauge, 24, vacuum pressure gauge ball valve, 25, vacuum pump ball valve, 26, vacuum pump, 27, sampling ball valve, 28, sampling port, 29, sampling ball valve, 30, sampling port, 31, artificial insulation defect, 32, grounding Conductive rod, 33, supportin...
Embodiment 2
[0037] An experimental device for multi-sensor joint monitoring of partial discharge of gas-insulated electrical equipment is the same as in Example 1, wherein: the capacity of the power regulator console 1 is 50kVA, the input voltage is 380V, and the output voltage is 0-400V. The non-PD test transformer 2 is 100kV / 50kVA. The protection resistor 3 is 100kΩ / 0.3A.
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Abstract
The invention relates to a gas insulated electrical equipment partial discharge multi-sensor combined monitoring experiment device comprising a power frequency AC power supply system, a gas discharge chamber, at least four artificial insulation defect models and a multi-sensor combined detection system which comprises four parts of a pulse current method sensor detection system, an ultrahigh frequency sensor detection system, a gas chromatography mass spectrometric detection sensor detection system and a fluorescence fiber sensor detection system. Partial discharge of an SF6 gas insulated electrical equipment typical defect under different air pressure, different electric field distribution and different gas types of the condition of power frequency alternating current can be simulated, electrical, optical, ultrahigh frequency and gas component multi-source information of partial discharge of equipment is acquired, and effective characteristic quantity of the most mechanism of PD signals with the closest insulation connection can be mined so that a simple and feasible method and experiment platform are provided for the experimental study of construction of a comprehensive and integrated complete SF6 gas insulated electrical equipment insulation state information base.
Description
technical field [0001] The present invention belongs to sulfur hexafluoride (SF 6 ) The technical field of on-line monitoring of the insulation state of gas-insulated electrical equipment, specifically relates to a multi-sensor joint monitoring experimental device for partial discharge of gas-insulated electrical equipment. Background technique [0002] With sulfur hexafluoride gas (SF 6 ) SF as insulation and arc extinguishing medium 6 Gas Insulated Switchgear (GIS for short), due to its high reliability, small maintenance, small footprint, flexible configuration and other advantages, has developed rapidly and is widely used in high voltage and extra / ultra high voltage fields of power systems. One of the preferred equipment and important symbols of modern substations. However, the internal structural components of GIS equipment are not up to standard due to the manufacturing and assembly process, and the equipment itself has defects. Under the operating electric field an...
Claims
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