CN204731371U - A kind of free metal particle defects analogue experiment installation of disc insulator - Google Patents
A kind of free metal particle defects analogue experiment installation of disc insulator Download PDFInfo
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- CN204731371U CN204731371U CN201520340204.XU CN201520340204U CN204731371U CN 204731371 U CN204731371 U CN 204731371U CN 201520340204 U CN201520340204 U CN 201520340204U CN 204731371 U CN204731371 U CN 204731371U
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Abstract
The utility model belongs to gas insulated combined electric appliance equipment condition monitoring and fault diagnosis research and apply technical field in intelligent substation, in particular to a kind of free metal particle defects analogue experiment installation of disc insulator, comprise GIS housing, defect test circuit, and the sealed chamber to be made up of GIS housing, disc insulator is provided with in described sealed chamber, lower disc insulator and center conductor, described defect test circuit comprises superfrequency sensor, collector, wave filter, high-speed oscilloscope, described superfrequency sensor by fiber optic cables successively with collector, wave filter is connected with high-speed oscilloscope, described superfrequency sensor is arranged at by the GIS outside putting on disc insulator and lower disc insulator institute through part respectively, accurate recognition electric discharge type captured by analogue means of the present utility model, the conventional difficulties such as assessment discharge severity, improve the fault diagnosis level of technician.
Description
Technical field
The utility model relates to gas insulated combined electric appliance equipment condition monitoring and fault diagnosis research and apply technical field in a kind of intelligent substation, particularly a kind of free metal particle defects analogue experiment installation of disc insulator.
Background technology
China's energy centre and economic center are contrary distribution, to the transmission of electricity of large-capacity and high-performance, controller switching equipment crave for increasing.Based on this, to gas insulated combined electrical equipment (GAS INSULATED SWITCHGEAR, GIS), be namely workmanship requirement the highest, be also one of equipment that bottleneck problem is maximum; Disc insulator is wherein as the critical component in gas insulated combined electrical equipment, and its health status directly affects apparatus insulated performance and reliability, and embody rule present situation is as follows:
On the one hand, by the reliability statistics interpretation of result of power grid enterprises to gas-insulated metal fully closed combined electric unit, find produce shelf depreciation by disc insulator surface free metal particulate, and cause the decreasing insulating of the inner sulfur hexafluoride gas of apparatus body, solid dielectric disc insulator) creeping discharge and flashover, the defect such as even to puncture, and along with the increase day by day of gas insulated combined electric appliance equipment scale, equipment supplier's technical merit uneven, cause in device fabrication, transport, the probability assembling and produce in maintenance process free metal particulate increases, and then frequently cause equipment failure, affect power supply reliability, on the other hand, the shelf depreciation that free metal particulate produces, the superfrequency electromagnetic impulse signal of meeting association 300MHz ~ 3000MHz, and can disc insulator gap place diffraction from inside to outside.The technician at power grid enterprises' monitoring and warning center by based on superfrequency technology charged/discharge signal of online test method identification gas insulated combined electric appliance equipment inside, diagnostic device built-in electrical insulation degradation; And whether there is further disc insulator in judgment device body and to puncture or sulfur hexafluoride gas such as to puncture at the fault.
Given this, in the urgent need to a kind of device can simulating disc insulator surface free metal particle defects, in order to analyze the evolution process that it produces electric discharge, sum up, propose to promote disc insulator aimed detection method, and guide production installation and the operation maintenance of gas insulated combined electrical equipment, test process also can improve the operant level of relevant operation maintenance personnel by this, accumulation diagnostic experiences, better the latency electric discharge phenomena of identification equipment.
Utility model content
The utility model is for the limitation of conventional art, have developed a kind of free metal particle defects analogue experiment installation of disc insulator, the metallic particles can simulated on disc insulator causes the situation of electric discharge, and test, this technology contributes to expanding the technological means characterizing partial discharge pulse's source otherness, the technical merit of the manufacture of lift gas insulation in combined electric appliance and mounting process, lift technique personnel, to achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of free metal particle defects analogue experiment installation of disc insulator, it is characterized in that: comprise GIS housing and defect test circuit, and the sealed chamber to be made up of GIS housing, disc insulator is provided with in described sealed chamber, lower disc insulator and center conductor, be arranged in sealed chamber described upper disc insulator and lower disc insulator horizontal equalization, and it is identical with the distance of bottom to sealed chamber's inner top respectively, described center conductor from top to bottom successively vertically runs through disc insulator, the center of lower disc insulator, described defect test circuit comprises superfrequency sensor, collector, wave filter and high-speed oscilloscope, described superfrequency sensor by fiber optic cables successively with collector, wave filter is connected with high-speed oscilloscope, described superfrequency sensor comprises right superfrequency sensor and left superfrequency sensor, and the GIS outside be arranged at respectively by lower disc insulator and upper disc insulator institute through part.
Further, described right superfrequency sensor and left superfrequency sensor be close to respectively be arranged in GIS shell by lower disc insulator, upper disc insulator horizontal through part sprue gate outside.
Concrete, the single-phase monotubular structure that described upper disc insulator and lower disc insulator adopt poured with epoxy resin to make, its sprue gate is round rectangle, and long is 40mm, and wide is 20mm; Wherein, the thickness of upper disc insulator and lower disc insulator is 55mm, and race diameter is 920mm, and the cavity wall thickness of described GIS housing is 16mm, and center conductor diameter is 86mm.
Further as the utility model, the surface of described upper disc insulator and lower disc insulator is fixed or is not provided with the free particulate of metal regularly, and described metal free particulate employing diameter is that the aluminum metal particle of 0.2mm ~ 1.5mm is formed.
Further as the utility model, described upper disc insulator and lower disc insulator horizontal equalization are arranged at GIS housing middle section, and edge is provided with and is no less than ten for fixing metal bolts and screw, and are connected with GIS housing fixed support.
Concrete, described upper disc insulator and lower disc insulator and center conductor run through surrounding's formation boss at middle part, described boss is the low dip angle of 36 °, pore is not with in described lower disc insulator surface, top and the bottom gas is cut off, described upper disc insulator surface band pore, makes top and the bottom gas be communicated with.
Concrete, described superfrequency sensor employing is two holds up archimedean plannar spiral antenna, and described wave filter is the SRP sequence of filter of cavity package formula, and described high-speed oscilloscope adopts four-way portable oscilloscope
In sum, the utility model has the following advantages:
The first, the utility model adopts modular design, flexible configuration, and with low cost, is suitable for applying, have employed Dynamic Non-Destruction Measurement simultaneously, destructive low, can obtain deep application in industrial product quality controls.
Second, this experimental provision adopts non-invasive detection mode, it is external that the equal device of each testing element that need operate is installed on analog machine, realize primary circuit when not changing equipment original structure and the method for operation and secondary circuit is isolated, therefore do not jeopardize the personal safety of monitoring and warning center tester.
3rd, the conventional difficulties such as accurate recognition electric discharge type, assessment discharge severity captured by analogue means of the present utility model, and the priori data of test circuit accumulation can promote to improve the multilayer feedforward neural network determining discharge position.
4th, the utility model effectively can also reduce the surperficial fixing metal particle of disc insulator along face shelf depreciation evolution, comprise and present corona discharge, corona and coexist along face ebb-flow discharge, along face ebb-flow discharge three Main Stage, be beneficial to the fault diagnosis level of the personnel of developing skill, more be conducive to the characteristic parameter demarcating general partial discharge pulse source, and be that the demarcation signal source of researching and developing also testing authentication lays the foundation.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model example or technical scheme of the prior art, introduce doing accompanying drawing required in embodiment or description of the prior art simply below, obviously, accompanying drawing in the following describes is only examples more of the present utility model, to those skilled in the art, do not paying under creationary prerequisite, other accompanying drawing can also obtained according to these accompanying drawings.
The schematic diagram of Fig. 1 to be the utility model be a kind of free metal particle defects analogue experiment installation of disc insulator.
In accompanying drawing, 1-metal bolts or screw, 2-GIS housing, 3-center conductor, the right superfrequency sensor of 41-, the left superfrequency sensor of 42-, 5-collector, 6-wave filter, 7-high-speed oscilloscope, the free particulate of 8-metal, the upper disc insulator of 11-, disc insulator under 12-, 20-sealed chamber.
Embodiment
Below in conjunction with the accompanying drawing in the utility model example, the technical scheme in the utility model embodiment is clearly and completely described.Obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, a kind of free metal particle defects analogue experiment installation of disc insulator, comprise GIS housing 1 and defect test circuit, and the sealed chamber 20 to be made up of GIS housing 1, disc insulator 11 is provided with in described sealed chamber 20, lower disc insulator 12 and center conductor 3, be arranged in sealed chamber 20 described upper disc insulator 11 and lower disc insulator 12 horizontal equalization, and it is identical with the distance of bottom to sealed chamber 20 inner top respectively, form the pressure limit of sealed chamber at 0.40 ~ 0.7MPa, described center conductor 3 from top to bottom successively vertically runs through disc insulator 11, the center of lower disc insulator 12.In the utility model, the free particulate 8 of metal is fixed or is not provided with regularly on the surface of described upper disc insulator 11 and lower disc insulator 12, the particular location placed, quantity, shape experimentally can need adjustment, metal free particulate 8 shape is rule or irregular particulate, disc insulator surface can be fixed to if desired after stickup, certainly, its material also can be substituted by drawing pin, screw rod, the free particulate 8 of described metal adopt diameter be 0.2mm ~ 1.5mm aluminum metal particle form.
In the utility model, described upper disc insulator 11 and lower disc insulator 12 horizontal equalization are arranged at GIS housing 2 middle section, and edge is provided with and is no less than ten for fixing metal bolts and screw 1, and are connected with GIS housing 2 fixed support; Described upper disc insulator 11 and lower disc insulator 12 run through surrounding's formation boss at middle part with center conductor 3, described boss is the low dip angle of 36 °, described disc insulator one side epirelief, bossing and center conductor are 36 ° of pitch angle, formed uniform circular arc, groove with this on disc insulator two sides, making it to possess to have requirement of strength, and perfect surface electric-field intensity distribution, make it surface insulation distance sufficient, ensure that center conductor 3 pairs of peripheries have enough surface insulation nargin; Pore is not with in described lower disc insulator 12 surface, top and the bottom gas is cut off, described upper disc insulator 11 surface band pore, top and the bottom gas is communicated with, and plays insulation, supporting role, and two kinds of different structures are convenient to analyze discharge test data better.
In the utility model embodiment, the single-phase monotubular structure that described upper disc insulator 11 and lower disc insulator 12 adopt poured with epoxy resin to make, its sprue gate is round rectangle, long is 40mm, and wide is 20mm, wherein, the thickness of upper disc insulator 11 and lower disc insulator 12 is 55mm, race diameter is about 920mm, and the cavity wall thickness of described GIS housing 2 is 16mm, and center conductor 3 diameter is 86mm.
Described defect test circuit comprises superfrequency sensor, collector 5, wave filter 6 and high-speed oscilloscope 7, described superfrequency sensor by fiber optic cables successively with collector 5, wave filter 6 is connected with high-speed oscilloscope 7, described collector 5 obtains the hyperchannel original discharge electromagnetic wave signal that superfrequency sensor detects, and it is being switched, transfer to wave filter 6 after synchronous process to process, described wave filter 6 is the SRP sequence of filter of cavity package formula, wave filter 6 rectifiable filtering shelf depreciation electromagnetic wave signal, with the jammr band signal in filtering loop except designated centers frequency range (300MHz ~ 850MHz and 1000MHz ~ 1500MHz), and under the condition of circuit symmetrical, suppress the zero point drift of original discharge signal and suppress the noise of source ground, wave filter 6 guarantees the Signal transmissions obtained in true discharge frequency to process to high-speed oscilloscope 7, described high-speed oscilloscope 7 adopts four-way portable oscilloscope, its analog bandwidth upper limit can reach 5000MHz, its single pass real-time sampling rate can reach 20GS/s, resolution can reach 200ps, deeply can deposit the sample of more than 10000, for storing, the number of times of display discharge pulse, frequency, voltage, amplitude, phase place, the time domain waveform of time etc. or frequency-domain waveform, and analyze for the technician at monitoring and warning center, diagnosis.
In described superfrequency sensor, two thickness holding up archimedean plannar spiral antenna is 3mm, frequency band range is 300MHz ~ 3000MHz. analogue simulation end condition is that resonance frequency place standing-wave ratio (SWR) is lower than 2, described superfrequency sensor is in order to the shelf depreciation electromagnetic wave signal of probe gas indoor, in the utility model embodiment, described high frequency sensors comprises right superfrequency sensor 41 and left superfrequency sensor 42, and be arranged at by the outside of the GIS housing 2 of lower disc insulator 12 and upper disc insulator 11 through parts respectively, be close to particularly and be arranged in GIS shell 2 by lower disc insulator 12, upper disc insulator 11 horizontal through part sprue gate outside, and adopt shielding cloth tightly to wrap up its exposed nonmetal position.
Composition graphs 1, the embodiment of the utility model specific operation process is as follows,
1). experimentally free for some metals particulate 8 is placed in disc insulator surface by scheme, and after sealed air chamber inflate, pressurization power on, in addition, whether need the different viewpoints of matched metal outer ring and shielding inner ring (be namely can relax, improves the distribution of equipment internal electric field) in view of in industry to disc insulator, described disc insulator can be designed to be with or without metal outer ring and shield two kinds of inner ring dissimilar as required.
2). by the disc insulator surface of each superfrequency sensor close installation in gas insulated combined electrical equipment body, each superfrequency sensor all adopts shielding bag to wrap up, isolated background noise.
3). be installed on the discharge signal of the superfrequency sensor probe gas chamber interior of disc insulator surface body, and be uploaded to wave filter after collector collects.
4). wave filter 6 is analyzed the discharge signal detected value respectively uploaded, filter after be uploaded to high-speed oscilloscope 7 and store, show.Concrete filtration refers to that filtering is identical with ground unrest or close to the waveform of fingerprint, the electromagnetic interference (EMI) type of filtering external environment can have electric discharge etc. in mobile phone signal, electric welding machine signal, air.
5). the technician at monitoring and warning center so that again by high-speed oscilloscope 7 to the true discharge signal diagnosis after filtering, the result studying and judging the concrete insulation defect of free metal particulate of existence.The technician participating in experiment should possess the experience identifying the concrete electric discharge type such as creeping discharge, floating potential.In addition, the comparative analysis of Partial Discharge Detection value degree of discharge, position comprises: based on measured value longitudinally contrast, the across comparison etc. of time domain change.Specific as follows:
Longitudinally contrast: the same monitoring sensor of longitudinal comparison is in the measured value situation of change of different time sections, as measured value mean value comparing function in different times in same local discharge signal source, in discriminating device discharge defect degree and evolution process, provide judgement empirical value;
Across comparison: the measured value deviation function of the different monitoring sensor of lateral comparison section at one time, as same air chamber two superfrequency sensors in the same period interior mean value, time difference comparing function, and can be used for providing judgement empirical value in accumulation discriminating device discharge defect degree and discharge position:
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; allly to use within novel spirit and principle at this, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in utility model.
Claims (7)
1. the free metal particle defects analogue experiment installation of a disc insulator, it is characterized in that: comprise GIS housing (2) and defect test circuit, and the sealed chamber (20) to be made up of GIS housing, disc insulator (11) is provided with in described sealed chamber (20), lower disc insulator (12) and center conductor (3), be arranged in sealed chamber (20) described upper disc insulator (11) and lower disc insulator (12) horizontal equalization, and it is identical with the distance of bottom to sealed chamber (20) inner top respectively, described center conductor (3) from top to bottom successively vertically runs through disc insulator (11), the center of lower disc insulator (12), described defect test circuit comprises superfrequency sensor, collector, wave filter and high-speed oscilloscope, described superfrequency sensor by fiber optic cables successively with collector, wave filter is connected with high-speed oscilloscope, described superfrequency sensor comprises right superfrequency sensor (41) and left superfrequency sensor (42), and be arranged at by the GIS housing (2) of lower disc insulator (12) and upper disc insulator (11) institute through part outside respectively.
2. the free metal particle defects analogue experiment installation of a kind of disc insulator according to claim 1, is characterized in that: described right superfrequency sensor (41) and left superfrequency sensor (42) be close to respectively be arranged in GIS shell (2) by lower disc insulator (12), upper disc insulator (11) horizontal through part sprue gate outside.
3. the free metal particle defects analogue experiment installation of a kind of disc insulator according to claim 2, it is characterized in that: the single-phase monotubular structure that described upper disc insulator (11) and lower disc insulator (12) adopt poured with epoxy resin to make, its sprue gate is round rectangle, long is 40mm, wide is 20mm, wherein, the thickness of upper disc insulator (11) and lower disc insulator (12) is 55mm, race diameter is 920mm, the cavity wall thickness of described GIS housing (2) is 16mm, and center conductor (3) diameter is 86mm.
4. the free metal particle defects analogue experiment installation of a kind of disc insulator according to claim 1 and 2, it is characterized in that: the surface of described upper disc insulator (11) and lower disc insulator (12) is fixed or is not provided with the free particulate of metal (8) regularly, the free particulate of described metal (8) employing diameter is that the aluminum metal particle of 0.2mm ~ 1.5mm is formed.
5. the free metal particle defects analogue experiment installation of a kind of disc insulator according to claim 2, it is characterized in that: described upper disc insulator (11) and lower disc insulator (12) horizontal equalization are arranged at GIS housing (2) middle section, and edge is provided with and is no less than ten for fixing metal bolts and screw (1), and be connected with GIS housing (2) fixed support.
6. the free metal particle defects analogue experiment installation of a kind of disc insulator according to claim 2, it is characterized in that: described upper disc insulator (11) and lower disc insulator (12) run through surrounding's formation boss at middle part with center conductor (3), described boss is the low dip angle of 36 °, pore is not with in described lower disc insulator (12) surface, top and the bottom gas is cut off, described upper disc insulator (11) surface band pore, makes top and the bottom gas be communicated with.
7. the free metal particle defects analogue experiment installation of a kind of disc insulator according to claim 1, it is characterized in that: described superfrequency sensor employing is two holds up archimedean plannar spiral antenna, described wave filter is the SRP sequence of filter of cavity package formula, and described high-speed oscilloscope adopts four-way portable oscilloscope.
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| CN201520340204.XU CN204731371U (en) | 2015-05-22 | 2015-05-22 | A kind of free metal particle defects analogue experiment installation of disc insulator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107505551A (en) * | 2017-09-21 | 2017-12-22 | 国家电网公司 | Gas-insulated stacked switch equipment superfrequency sensor arrangement experimental rig and application |
| CN114047414A (en) * | 2021-11-11 | 2022-02-15 | 国网上海市电力公司 | Be used for interior defect test simulation of GIS air chamber with convenient change structure |
| CN114509652B (en) * | 2022-04-19 | 2022-06-21 | 合肥航太电物理技术有限公司 | Device and method for testing radio frequency discharge noise of aircraft electrostatic discharger |
| CN115718053A (en) * | 2022-11-19 | 2023-02-28 | 沈阳工业大学 | Particle discharge experiment platform foreign matter release device and GIL test system |
| CN116859191A (en) * | 2023-06-21 | 2023-10-10 | 武汉大学 | DC basin-type insulator electric field control threshold calculation system and method |
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2015
- 2015-05-22 CN CN201520340204.XU patent/CN204731371U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107505551A (en) * | 2017-09-21 | 2017-12-22 | 国家电网公司 | Gas-insulated stacked switch equipment superfrequency sensor arrangement experimental rig and application |
| CN107505551B (en) * | 2017-09-21 | 2023-04-18 | 国家电网公司 | Gas insulated switchgear ultrahigh frequency sensor arrangement test device and application |
| CN114047414A (en) * | 2021-11-11 | 2022-02-15 | 国网上海市电力公司 | Be used for interior defect test simulation of GIS air chamber with convenient change structure |
| CN114047414B (en) * | 2021-11-11 | 2024-04-02 | 国网上海市电力公司 | Be used for defect test simulation in GIS air chamber to use convenient change structure |
| CN114509652B (en) * | 2022-04-19 | 2022-06-21 | 合肥航太电物理技术有限公司 | Device and method for testing radio frequency discharge noise of aircraft electrostatic discharger |
| CN115718053A (en) * | 2022-11-19 | 2023-02-28 | 沈阳工业大学 | Particle discharge experiment platform foreign matter release device and GIL test system |
| CN116859191A (en) * | 2023-06-21 | 2023-10-10 | 武汉大学 | DC basin-type insulator electric field control threshold calculation system and method |
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