CN201654177U - Locating device for detecting internal local discharge of gas-insulated combined electrical equipment - Google Patents
Locating device for detecting internal local discharge of gas-insulated combined electrical equipment Download PDFInfo
- Publication number
- CN201654177U CN201654177U CN2010201711760U CN201020171176U CN201654177U CN 201654177 U CN201654177 U CN 201654177U CN 2010201711760 U CN2010201711760 U CN 2010201711760U CN 201020171176 U CN201020171176 U CN 201020171176U CN 201654177 U CN201654177 U CN 201654177U
- Authority
- CN
- China
- Prior art keywords
- signal
- probe
- signal detector
- locating device
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
A locating device for detecting internal local discharge of gas-insulated combined electrical equipment comprises a probe (1), a signal detector (2), a signal cable (3) and an analogue discharger (4). An N-type socket is arranged inside the probe (1), a BNC socket is arranged inside the signal detector (2), the N-type socket and the BNC socket are arranged at the two ends of the signal cable (3) respectively, the probe (1) is connected with the signal detector (2) through the signal cable (3), and the signal detector (2) is set to be an oscilloscope. The locating device can determine internal local discharge through specified detection method, so as to be helpful for formulating repair schedule, conducting equipment repair, avoiding failure propagation, and improving operating safety and reliability of the gas-insulated combined electrical equipment.
Description
One, technical field
The utility model relates to a kind of locating device of detected gas insulation in combined electric appliance device interior shelf depreciation, and especially a kind of adaptation is used at the locating device that uses on-the-spot detected gas insulation in combined electric appliance device interior shelf depreciation.
Two, background technology
In electrical equipment, general using gases insulation technology, therefore gas insulated combined electric appliance equipment is that GIS is widely used, because during the gas insulated combined electric appliance equipment long-distance transport, the metalwork that internal activity connects is subjected to friction may produce a spot of metal fillings, is jolted or floats in the electric field when inflation, therefore discharge signal can occur when applying voltage first, should carry out ageing this moment and handle, it is burnt; Simultaneously when gas insulated combined electric appliance equipment uses, regularly the insulativity to its inside detects, to ensureing that its safe handling has important effect, the built-in electrical insulation of gas insulated combined electric appliance equipment is an important index, at present body insulation in combined electric appliance apparatus local discharge on-line monitoring technique is progressively used, but the on-the-spot test method, affirmation, the diagnosis that detects signal is not had enough detailed, clear and definite method; When detecting signal, often can't judge that disturbing still is the inner shelf depreciation of GIS, therefore can't often look into because of unnecessary tearing open and cause enormous expenditure for further tearing the information that provides enough of looking into open.
Three, summary of the invention
The utility model overcomes above-mentioned technical disadvantages, and purpose provides a kind of portable locating device of detected gas insulation in combined electric appliance device interior shelf depreciation, has improved the performance of gas insulated combined electric appliance equipment.
For achieving the above object, the technical scheme that the utility model is taked is to include probe, signal detector, signal cable and simulation discharger; Probe is provided with N type head socket, and signal detector is provided with BNC socket, and an end of signal cable is set to N type head and its other end is set to the BNC head, and probe is set to be connected with signal detector by signal cable, and signal detector is set to oscillograph.
Signal detector is set in the state of work, whether re-use simulation discharger detection probe in running order by the signal detector that signal cable connects, again probe is placed on the insulator of gas insulated combined electric appliance equipment, the conditioning signal detecting device, when signal occurring on the display interface of observation signal detecting device, if signal is in the intercycle appearance of the time interval of each 20ms, signal is continuously uninterrupted the appearance, the zone (away from this zone time signal decay gradually) that has a signal maximum, " second/lattice " knob of conditioning signal detecting device 2 diminishes gradually, and signal is shown as triangular wave when " M 500 μ s "～" 5 μ s " is interval, judges that then this signal is the inner local discharge signal of gas insulated combined electric appliance equipment.
Because the method for using is simple, judge that figure is clear and definite, in time find inner partial discharge phenomenon, can formulate turnaround plan according to this testing result, carry out overhaul of the equipments, avoid fault to enlarge, improved the safety and reliability of gas insulated combined electric appliance equipment operation.
The utility model has designed, and probe is set to two and be set to be connected with signal detector " CH1 " " CH2 " passage respectively by signal cable.
Since the diverse location of two probes, the time interval of two signals that in signal detector, form, by equation, thereby calculate gas insulated combined electric appliance equipment internal discharge position, guarantee the accuracy of discharge position.
Four, description of drawings
Accompanying drawing is a portable detection and location schematic representation of apparatus of the present utility model.
Five, embodiment
Accompanying drawing is embodiment of portable detection and location device of the present utility model, specifies present embodiment in conjunction with the accompanying drawings, includes probe 1, signal detector 2, signal cable 3 and simulation discharger 4; Probe 1 is provided with N type head socket, and signal detector 2 is provided with BNC socket, and an end of signal cable 3 is set to N type head and its other end is set to the BNC head, and probe 1 is set to be connected with signal detector 2 by signal cable 3.
In the present embodiment, signal detector 2 is set to adopt the oscillograph of bandwidth 200MHz, sampling rate 2GMHz, and simulation discharger 4 is in order to verify whether whole device can operate as normal.
In the present embodiment, probe 1 is set to sensor type, and its model is: TKHD-2002.
In the present embodiment, the model of signal detector 2 is: TDS2022B A10L7.
In the present embodiment, the model of simulation discharger 4 is: TKHD-2005.
According to following using method:
1. charging is prepared before the test
The probe internally provided high-energy rechargeable battery of hand-held, but electric weight can be lost gradually after long-time the placement, should be before test at first to battery charge.During charging, probe charger BNC head reliably is connected with the BNC head of hand-held probe, the probe charger is connected with the two spring hole scoket power supplys of AC220V 50Hz 10A, this moment, the charger pilot lamp was green; Switch on the hand-held probe beaten to "-" locate, the charger pilot lamp becomes redness, and the hand-held probe enters charged state; After the charger pilot lamp became green, the expression charging was finished; Switch on the hand-held probe beaten to " 0 " locate, pull down charger.
2. testing ground wiring
(1) the N type head of special signal cable and the N type head on the sensor probe are reliably screwed;
(2) the jack end of oscillograph power lead and the attaching plug at the oscillograph back side reliably are seated, plug end is connected with the Three-hole socket power supply of AC220V 50Hz 10A.
3. start, setting
(1) presses the white power knob of oscillograph top left side, start oscillograph;
(2) oscillograph starts about 20 seconds of back, enters detected state automatically, does not need human intervention before this;
(3) press " CH1 MENU " button on the guidance panel, the yellow fluctuation straight line that can occur or disappear on the display screen after this yellow line occurs, stops to press; Same method is removed red line and blue line; At this moment, sense channel is put in the office of entering of system;
(4) knob of rotation " CH1 MENU " button bottom is observed display screen lower left corner displayed value and is changed continuously, stops to being shown as " CH1 100mV " time, and longitudinal axis scale shown in this moment is set at every big lattice 100mV;
(5) check display interface right side menu, press the button of menu right side correspondence, be provided with as follows " CH1 " passage:
Coupling: direct current bandwidth constraints: close volt/lattice: coarse adjustment
Probe: 1X is anti-phase: close
(6) " TRIG MENUE " button display display interface the right of pressing on the guidance panel shows " triggering source ", " trigger mode " setup menu; Regulate the corresponding button on display right side, be provided with as follows respectively:
Triggering source: CH1 trigger mode: automatically
(7) " level " knob on adjusting " TRIG MENUE " button top, observing the display screen interface right side has yellow arrows to move up and down, bottom right positions displayed value (yellow) correspondence changes continuously, stop when being shown as " 20.0mV ", this moment system only detected amplitude and will be less than the interference shielding of 20mV greater than the discharge signal of 20mV;
(8) regulate " second/lattice " knob, observe display screen interface bottom centre position displayed value (white) and change continuously, stop to being shown as " M 20.0ms " time, transverse axis scale shown in this moment is set at whenever lattice 20.0ms greatly.
3. online detection
(1) the BNC head of special signal cable and the BNC head of special signal monitor " CH1 " passage are reliably screwed;
(2) button on the sensor probe is beaten to "=" locate, to sensor power supply (+12V);
(3) will simulate discharger to discharging in sensor probe detection window place (about 10mm) simulation, the observation display interface should have the signal greater than 50mV to occur, and the expression system works is normal; If do not have signal or signal less, please check that setting is whether correct, the probe power supply whether provide (+12V), whether signal wire connects correctly firm;
(4) after checking normally, sensor probe detection window and GIS insulator (non-metallic part) are aligned, are adjacent to, the metal flange of the curved metal barricade of sensor probe and GIS insulator both sides is close to, promptly enter the on-line monitoring state, in this process, notice that observation display has no signal to occur.
(5) in testing process if signal shows that may there be shelf depreciation in GIS inside.
(6) affirmation of shelf depreciation and location
When detecting signal, whether uninterruptedly occur continuously at the time interval of each 20ms intercycle appearance (fixed position at each 20ms occurs), signal; If, regulate " second/lattice " knob, observe centre position, display screen interface bottom displayed value and diminish gradually until " M 500 μ s "～" 5 μ s ", interval, if signal is shown as sine wave, concussion attenuation sinusoidal wave or step signal, then should be the external interference signal around here; If periodic square wave then should be communication signals such as mobile phone; If roughly the same then there is the GIS partial discharge phenomenon in the triangular wave of discharge signal.
(7) detect finish after, should earlier signal wire be pulled down from oscillograph, close the oscillograph power supply again, the sensor probe power knob places centre position " O " to locate, then all devices are reinstalled instrument container and properly receive and keep.
In another embodiment of portable detection and location device of the present utility model, probe 1 is set to two and be set to be connected with two passages of signal detector 2 respectively by signal cable 3.
When detecting signal, should take following mode to judge:
(a) if when the waveform of signal is triangular wave, whether observation signal is in the time interval of each 20ms intercycle appearance (fixed position at each 20ms occurs), signal uninterrupted continuously appearance whether; If then carry out (b) item.
(b) regulate " second/lattice " knob, observing centre position, display screen interface bottom displayed value diminishes gradually until " M 500 μ s "～" 5 μ s ", the interval if signal is shown as sine wave, concussion attenuation sinusoidal wave or step signal, then should be the external interference signal around here; If periodic square wave then should be communication signals such as mobile phone; If roughly the same the triangular wave of discharge signal then carries out (c) item.
(c) regulate " second/lattice " knob, observe centre position, display screen interface bottom displayed value and revert to " M20.0ms ".Sequence of positions by insulator changes the position that probe is monitored one by one, and whether observation signal exists the phenomenon of " certain position signalling maximum, other position increase signal amplitude with distance and decay gradually "; If, define this place and be the Q point, carry out (d) item simultaneously.
(d) adopt 2 sensor probes to measure signal simultaneously, signal is confirmed, located.
According to aforementioned process, second sensor probe is connected with " CH2 " passage of special signal monitor, and setting with the CH1 passage is set, but the triggering source still is set to " CH1 "; Regulate " second/lattice " knob, observe bottom the display screen interface centre position displayed value and be shown as " M 10.0ns " time and stop.
Two sensor probes are placed on respectively on the insulator of Q point both sides, when really being internal discharge, yellow (CH1 passage) will appear on the display simultaneously, blue (CH2 passage) signal is not (if occur simultaneously, then signal is a undesired signal), and two signal waveforms similar (amplitude difference), this moment the push panel upper right corner " RUN/STOP " button, image is fixed, read from blue signal and occur interlude occurring to yellow signal, differ n big lattice as figure, then this mistiming is Δ t=n * 10ns, and the range difference of two sensor probes of discharge position distance is:
S=c * Δ t (rice)
Wherein: c=0.3 rice/nanosecond
Measure distance D between 2 probes with meter ruler, establishing Q point is X apart from the distance of first probe, is Y apart from the distance of second probe, and following equation is then arranged:
X-Y＝S
X+Y＝D
Solve an equation and can draw:
X＝(S+D)/2
Y＝(D-S)/2
According to the power of signal, judge the position of Q again, promptly the probe that Q point distance signal amplitude is bigger is near, thereby accurately makes discharge position, and tears open targetedly and look into.
The characteristics of the utlity model has down:
1, can arrange the inner office of on-line monitoring GIS to put and need not the operation of GIS is adjusted at any time at the GIS run duration, whole observation process have both had no effect to the normal operation of GIS, also can not form any danger to testing staff and equipment.
2, judge that signal is clear and definite, operation steps is simple, has improved the gas insulated combined electric appliance equipment detection efficiency.
3, the electronic equipment cost of Shi Yonging is low, is easy to carry, and can adapt to different use scenes.
4, the superfrequency electromagnetic wave signal that sends by the inner shelf depreciation of online acquisition GIS carries out qualitative monitoring and location to the built-in electrical insulation of GIS in service, thereby in time finds insulation hidden danger, avoids the generation of catastrophic failure.
In the method and portable detection and location device technique field of detected gas insulation in combined electric appliance device interior insulativity; Every probe 1 that includes is provided with N type head socket; signal detector 2 is provided with BNC socket; one end of signal cable 3 is set to N type head and its other end is set to the BNC head; probe 1 is set to be connected with signal detector 2 by signal cable 3, and signal detector 2 is set to oscillographic technology contents all in protection domain of the present utility model.
Claims (2)
1. the locating device of a detected gas insulation in combined electric appliance device interior shelf depreciation; It is characterized in that: include probe (1), signal detector (2), signal cable (3) and simulation discharger (4), probe (1) is provided with N type head socket, signal detector (2) is provided with BNC socket, one end of signal cable (3) is set to N type head and its other end is set to the BNC head, probe (1) is set to be connected with signal detector (2) by signal cable (3), signal detector (2) is set to oscillograph
2. the locating device of detected gas insulation in combined electric appliance device interior shelf depreciation according to claim 1; It is characterized in that: probe (1) is set to two and be set to be connected with " CH1 " " CH2 " passage of signal detector (2) respectively by signal cable (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201711760U CN201654177U (en) | 2010-04-22 | 2010-04-22 | Locating device for detecting internal local discharge of gas-insulated combined electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201711760U CN201654177U (en) | 2010-04-22 | 2010-04-22 | Locating device for detecting internal local discharge of gas-insulated combined electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201654177U true CN201654177U (en) | 2010-11-24 |
Family
ID=43119421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201711760U Expired - Fee Related CN201654177U (en) | 2010-04-22 | 2010-04-22 | Locating device for detecting internal local discharge of gas-insulated combined electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201654177U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813743A (en) * | 2010-04-22 | 2010-08-25 | 山东泰开高压开关有限公司 | Method for detecting partial discharge in gas insulated switchgear and detecting and positioning device |
| CN103852697A (en) * | 2014-02-20 | 2014-06-11 | 广州供电局有限公司 | Cable partial discharge detection device |
| CN112379235A (en) * | 2020-10-10 | 2021-02-19 | 广西电网有限责任公司电力科学研究院 | GIS insulation fault testability evaluation method |
-
2010
- 2010-04-22 CN CN2010201711760U patent/CN201654177U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813743A (en) * | 2010-04-22 | 2010-08-25 | 山东泰开高压开关有限公司 | Method for detecting partial discharge in gas insulated switchgear and detecting and positioning device |
| CN101813743B (en) * | 2010-04-22 | 2012-11-21 | 山东泰开高压开关有限公司 | Method for detecting partial discharge in gas insulated switchgear and detecting and positioning device |
| CN103852697A (en) * | 2014-02-20 | 2014-06-11 | 广州供电局有限公司 | Cable partial discharge detection device |
| CN103852697B (en) * | 2014-02-20 | 2015-05-13 | 广州供电局有限公司 | Cable partial discharge detection device |
| CN112379235A (en) * | 2020-10-10 | 2021-02-19 | 广西电网有限责任公司电力科学研究院 | GIS insulation fault testability evaluation method |
| CN112379235B (en) * | 2020-10-10 | 2022-06-24 | 广西电网有限责任公司电力科学研究院 | GIS insulation fault testability evaluation method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104157195B (en) | Power cable fault simulation and positioning system | |
| CN203025309U (en) | Direct current partial discharge test analysis device for analog converter transformer | |
| CN101762799B (en) | System for online detection of voltage transformer precision | |
| CN103091609A (en) | Performance detecting system and method thereof of gas insulated substation (GIS) partial discharge on-line monitoring device | |
| CN104777444A (en) | Lightning arrester discharge counter comprehensive calibration instrument and calibration method | |
| CN104237759B (en) | Power transmission and transforming equipment strength of discharge measurement system and assay method | |
| CN201654177U (en) | Locating device for detecting internal local discharge of gas-insulated combined electrical equipment | |
| CN114264890A (en) | Non-contact type electrical parameter measurement and verification device and method for operating power equipment | |
| CN201449435U (en) | Interturn pressure test device | |
| CN109061276A (en) | A kind of isolated neutral system capacitance current test device and its test method | |
| CN205139349U (en) | Arrester discharge counter and leakage current table check gauge | |
| CN101813743B (en) | Method for detecting partial discharge in gas insulated switchgear and detecting and positioning device | |
| CN109557357B (en) | Non-contact voltage measuring and recording device, system and method | |
| CN107907757A (en) | A kind of new-energy automobile charging pile automatic testing equipment | |
| CN210626574U (en) | Alternating-current charging stake fault detection device | |
| CN203101571U (en) | Secondary common loop multipoint earth fault testing device | |
| CN211014495U (en) | AC-DC integrated charging pile test platform | |
| CN106249031A (en) | Power frequency high voltage measuring device with electricity | |
| CN204515116U (en) | Arrester discharge counter comprehensive calibrator | |
| CN202939297U (en) | Verification system for ground resistance tester | |
| CN107247177B (en) | Remote control distribution network electricity testing and grounding wire detection device | |
| CN205844414U (en) | A kind of earth resistance circuit structure measured based on split-core type meter | |
| CN104407271A (en) | Signal receiver for cable identification device | |
| CN113643454A (en) | Fill electric pile on-site security and synthesize inspection device | |
| CN105223511B (en) | A kind of test method for wind storage access system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20120422 |