The charged detection method of sulfur hexafluoride electrical equipment fault
Technical field
The invention belongs to the electrical engineering technical field, be specifically related to a kind of charged detection method of sulfur hexafluoride electrical equipment fault.
Background technology
Insulating medium sulfur hexafluoride gas in the High-Voltage Electrical Appliances; Chemical property is stable; But the dissociation product that in discharge process, produces as with equipment in micro-moisture, gaseous impurities, electrode material and insulating material react, will produce the decomposition product of complicated component, cause equipment corrosion.And the performance degradation of insulating medium also can cause the decreasing insulating of equipment, so that the personal safety that jeopardizes security of operation and operator.The detection of sulfur hexafluoride gas humidity is the effective means that the prevention insulation fault takes place, and utilizes the work of the decomposition product diagnosis electrical equipment situation of sulfur hexafluoride gas mainly to concentrate at present in the detection of gaseous decomposition product, as fluoridizes thionyl (SOF
2), sulphuric dioxide (SO
2), hydrogen fluoride (HF), sulfuretted hydrogen (H
2S) and carbon monoxide (CO) etc.; These decomposition product complicated components, form changeable; And have toxicity in various degree, the error of the unevenness of gaseous state component distributing and analyzing detecting method existence is given through detecting decomposition product diagnostic device situation and is brought bigger uncertainty in addition.Contact in the sulfur hexafluoride air cell, insulator, electrical connection, pedestal etc. mainly are made up of iron (Fe), aluminium (Al), copper (Cu), silver (Ag), tungsten (W), magnesium oxide (MgO) and the macromolecular material that insulate on a small quantity.The sulfur hexafluoride gas decomposition product be acrid gas mostly, easily with sulfur hexafluoride air cell in the metal parts reaction, and final formation is vulcanized or the fluoride solid product.Particularly as office put, when situation such as corona discharge, arc discharge take place, metal directly is activated into gaseous state, generates particulate solid with sulfur hexafluoride dissociation product or gas decomposition product reaction back.
Summary of the invention
The technical matters that the present invention will solve is; Big to sulfur hexafluoride gas decomposition product measuring error; Diagnose through detecting decomposition product that sulfur hexafluoride electrical equipment fault difficulty is big, fault is difficult to location defect, proposes a kind of method of utilizing air chamber internal solid particle diagnosis sulfur hexafluoride electrical equipment fault, particularly be directed against sulfur hexafluoride electrical equipment latency Fault Diagnosis; The hidden danger of discovering device existence is in time avoided fault to worsen and is caused security incident.
Technical solution of the present invention is that the charged detection method of the sulfur hexafluoride electrical equipment fault that is provided is to be following detection step:
(1), whichever diameter ≤
, tube length is 100 ~ 10000mm PTFE hose and a hose with a Teflon tube diameter and pore diameter matching ≤
the membranes spare.Said subsequent use filter membrane is a kind of in quantitative filter paper, metal fibre film, quartz glass fibre film, polypropylene filter membrane, Teflon filter membrane, polyvinyl chloride fibre film, cellulose nitrate microporous barrier, cellulose acetate microporous barrier, the polycarbonate nucleopore filter;
(2), use conventional method step (1) to be equipped with an end of filter membrane teflon hose that fixing sealing is equipped with;
The other end that is not closed of the teflon hose that (3), step (2) end that obtains is closed; Be connected with the delivery outlet of peripheral hardware sulfur hexafluoride electrical equipment to be detected, the flow velocity of the sulfur hexafluoride gas of use conventional method this peripheral hardware of control sulfur hexafluoride electrical equipment delivery outlet to be detected output is at 1~1000ml
.Min
-1In the scope, reach 100 ﹪ so that can guarantee the percent of pass that the sulfur hexafluoride gas of this peripheral hardware sulfur hexafluoride electrical equipment delivery outlet output to be detected flows through from said filter membrane;
(4), treat that the time that the sulfur hexafluoride gas of the sulfur hexafluoride electrical equipment delivery outlet to be detected of peripheral hardware described in the step (3) output flows through reaches 1~60 from said filter membrane
.Min removes filter membrane;
(5), use conventional method; To step (4) the filter membrane that removes implement that atomic absorption spectrometry, atomic emission spectrometry analysis, atomic fluorescence spectrometry analysis, ultravioletvisible spectroscopy analysis, ion chromatography analysis, ICP-AES analysis, inductively coupled plasma mass spectrometry analysis, x-ray fluorescence spectrometry method are analyzed, X ray energy dispersion spectrometry is analyzed, the x-ray photoelectron spectroscopy method is analyzed, a kind of ultimate analysis of Auger electron spectroscopy in analyzing, obtain the ultimate analysis conclusion of this institute except that filter membrane; Or to step (4) the filter membrane that removes implement X-ray diffraction method material phase analysis, obtain the material phase analysis conclusion of this institute except that filter membrane.Simultaneously, use conventional method,, obtain the blank assay result of this identical material filter membrane step (1) be equipped with filter membrane enforcement blank assay with step (4) the identical material of filter membrane of removing;
(6), use conventional method; To step (5) ultimate analysis conclusion or the material phase analysis conclusion of step (4) filter membrane that removes of the step that obtains (4) filter membrane that removes; Compare with the blank assay result of step (5) the identical material filter membrane that obtains; Obtain one or more elements in institute's iron content, aluminium, copper, silver, tungsten, magnesium, the carbon in the solid particle that above-mentioned steps (4) filter membrane that removes leaches, be contained element in the solid particle that leaches in the sulfur hexafluoride gas that the delivery outlet of the said peripheral hardware of above-mentioned steps (3) sulfur hexafluoride electrical equipment to be detected exports.Utilizing contained element in the solid particle that leaches in the sulfur hexafluoride gas of delivery outlet output of this peripheral hardware sulfur hexafluoride electrical equipment to be detected then is the corresponding element relation of the iron that comprised in the parts from said peripheral hardware sulfur hexafluoride electrical equipment to be detected, aluminium, copper, silver, tungsten, magnesium, carbon, uses the diagnosing malfunction that conventional method exists this peripheral hardware sulfur hexafluoride electrical equipment to be detected and draws diagnosis.
The invention has the beneficial effects as follows: the sampling process of using this method to implement; Can in sulfur hexafluoride gas humidity, purity, decomposition product test process, carry out synchronously; Belong to charged detection; Can under the condition of the sulfur hexafluoride electrical equipment that do not disintegrate, diagnose and locate fault and latency fault that this equipment exists, thereby the hidden danger of discovering device existence is in time avoided fault to worsen and is caused security incident.
Embodiment
Embodiment 1,
(1), whichever diameter ≤
, tube length of 100mm and a hose with Teflon PTFE hose diameter size of the match and filter pore diameter ≤
the membranes spare.Said subsequent use filter membrane is a quantitative filter paper;
(2), use conventional method step (1) to be equipped with an end of filter membrane teflon hose that fixing sealing is equipped with;
The other end that is not closed of the teflon hose that (3), step (2) end that obtains is closed; Be connected with the delivery outlet of peripheral hardware sulfur hexafluoride electrical equipment to be detected, the flow velocity of the sulfur hexafluoride gas of use conventional method this peripheral hardware of control sulfur hexafluoride electrical equipment delivery outlet to be detected output is at 1~1000ml
.Min
-1In the scope;
(4), treat that the time that the sulfur hexafluoride gas of the sulfur hexafluoride electrical equipment delivery outlet to be detected of peripheral hardware described in the step (3) output flows through reaches 1~60 from said filter membrane
.Min removes filter membrane;
(5), use conventional method, to step (4) the institute filter membrane that removes enforcement atomic absorption spectrometry, the ultimate analysis conclusion of acquisition step (4) filter membrane that removes.Simultaneously, use conventional method,, obtain the blank assay result of this identical material filter membrane step (1) be equipped with filter membrane enforcement blank assay with step (4) the identical material of filter membrane of removing;
(6), use conventional method; To step (5) the ultimate analysis conclusion of the step that obtains (4) filter membrane that removes; Compare with the blank assay result of step (5) the identical material filter membrane that obtains; Obtain one or more elements in institute's iron content, aluminium, copper, silver, tungsten, magnesium, the carbon in the solid particle that above-mentioned steps (4) filter membrane that removes leaches, be contained element in the solid particle that leaches in the sulfur hexafluoride gas that the delivery outlet of the said peripheral hardware of above-mentioned steps (3) sulfur hexafluoride electrical equipment to be detected exports.Utilizing contained element in the solid particle that leaches in the sulfur hexafluoride gas of delivery outlet output of this peripheral hardware sulfur hexafluoride electrical equipment to be detected then is the corresponding element relation of the iron that comprised in the parts from said peripheral hardware sulfur hexafluoride electrical equipment to be detected, aluminium, copper, silver, tungsten, magnesium, carbon, uses the diagnosing malfunction that conventional method exists this peripheral hardware sulfur hexafluoride electrical equipment to be detected and draws diagnosis.
Embodiment 2.
(1), whichever diameter ≤
, tube length 10000mm PTFE hose and a hose with a Teflon tube diameter and pore diameter matching ≤
the membranes spare.Said subsequent use filter membrane is the polycarbonate nucleopore filter;
Step (2)~(4) are with embodiment 1;
(5), use conventional method, to step (4) the institute filter membrane that removes enforcement X-ray diffraction method material phase analysis, the material phase analysis conclusion of acquisition step (4) filter membrane that removes.Simultaneously, use conventional method,, obtain the blank assay result of this identical material filter membrane step (1) be equipped with filter membrane enforcement blank assay with step (4) the identical material of filter membrane of removing;
(6), use conventional method; To step (5) the material phase analysis conclusion of the step that obtains (4) filter membrane that removes; Compare with the blank assay result of step (5) the identical material filter membrane that obtains; Obtain one or more elements in institute's iron content, aluminium, copper, silver, tungsten, magnesium, the carbon in the solid particle that above-mentioned steps (4) filter membrane that removes leaches, be contained element in the solid particle that leaches in the sulfur hexafluoride gas that the delivery outlet of the said peripheral hardware of above-mentioned steps (3) sulfur hexafluoride electrical equipment to be detected exports.Utilizing contained element in the solid particle that leaches in the sulfur hexafluoride gas of delivery outlet output of this peripheral hardware sulfur hexafluoride electrical equipment to be detected then is the corresponding element relation of the iron that comprised in the parts from said peripheral hardware sulfur hexafluoride electrical equipment to be detected, aluminium, copper, silver, tungsten, magnesium, carbon, uses the diagnosing malfunction that conventional method exists this peripheral hardware sulfur hexafluoride electrical equipment to be detected and draws diagnosis.