CN2886587Y - A device for online and offline detecting local discharging - Google Patents
A device for online and offline detecting local discharging Download PDFInfo
- Publication number
- CN2886587Y CN2886587Y CN 200520130694 CN200520130694U CN2886587Y CN 2886587 Y CN2886587 Y CN 2886587Y CN 200520130694 CN200520130694 CN 200520130694 CN 200520130694 U CN200520130694 U CN 200520130694U CN 2886587 Y CN2886587 Y CN 2886587Y
- Authority
- CN
- China
- Prior art keywords
- industrial computer
- signal
- signal condition
- condition unit
- card
- 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 - Lifetime
Links
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The utility model relates to an on-line detecting and off-line detecting device for the partial discharge, the chief technical features of which lie in providing a control circuit in the detector case, which is composed of a sensor circuit, a signal conditioning element, a data acquisition card and an industrial computer, wherein the sensor circuit couples the partial discharge signal and is connected with an analog signal input end of the signal conditioning element whose output end is connected with the input end of the data grabbing card, the trigger signal output of the signal conditioning element is connected with a triggering end of the data grabbing card, the I/O card of the industrial computer is connected with the signal conditioning element and the data acquisition card is connected with the industrial computer via a PCI slot. The utility model has the advantages of simple structure, portable function, and low costs, convenient and accurate in detecting.
Description
Technical field
The utility model belongs to a kind of device of electric field, the device of online detection of especially a kind of shelf depreciation and offline inspection.
Background technology
Shelf depreciation is the transformer insulated aging and the sensitiveest parameter of fault of reflection, also is the key factor of quickening transformer insulated deterioration.For this reason, the domestic transformer of generally having carried out regularly has a power failure and carries out the preventive trial system of measurement of partial discharge, but this system can not in time find the transformer operation time office of inside put and insulation status, can not reflect the state of insulation under the actual motion condition.
The online detection of power equipment is to utilize sensing technology and electronic technology, operating equipment is monitored,, and carry out analyzing and processing to obtain the various physical quantitys of reflection running status, realization is made a prediction to the operation conditions of equipment, and the method for warning and fault diagnosis is provided where necessary.At present, the domestic partial discharge of transformer on-line measurement device major part that comes into operation is cabinet type structure, this pick-up unit is fixedly mounted in the transformer station, can only on-line measurement be somebody's turn to do the interior partial discharge of transformer in station, improve the cost of shelf depreciation on-line measurement to a great extent, be unfavorable for applying of on-line measurement.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art part, provides a kind of simple in structure, has portable function, and is with low cost, the device of online detection of shelf depreciation easy to detect and offline inspection.
The realization the technical solution of the utility model is:
The device of online detection of this shelf depreciation and offline inspection, by sensor, the signal condition unit, data collecting card, industrial computer is formed and is installed in the detector casing, it is characterized in that: in the detector casing control circuit is installed, this control circuit is by sensor circuit, the signal condition unit, data collecting card, industrial computer is formed, sensor circuit coupling local discharge signal also is connected with the input end of analog signal of signal condition unit, the output terminal of signal condition unit connects the input end of data collecting card, the trigger pip output of signal condition unit connects the trigger end of data collecting card, the I/O card connection signal condition unit of industrial computer, the PCI slot of data acquisition card connection industrial computer.
And, the sensor that described sensor circuit adopted is the punching High Frequency Current Sensor, described signal condition unit is a BYTM-2 type signal condition module, and described data collecting card is 5102 Dual-Channel High-Speed Data Acquisition cards, and described industrial computer is a day brill 9002A industrial computer series.
Advantage of the present utility model and good effect are:
1. this device is according to IEC60270 pulse current method measurement standard, measure bandwidth 40kHz to 2MHz, adopt technology such as virtual instrument, high-speed data acquisition card, industrial computer, database, utilize Anti-Jamming Techniques such as polarity discriminating, digital filtering, can record the characterization parameter such as amplitude, phase place, number of times of shelf depreciation, and make intuitively two dimension, three-dimensional spectrum, long-term office and put trend map, for electric power transformer insulated condition diagnosing provides important criterion.
2. but use this device to get final product the local discharging level of online also offline inspection power transformer, it can reuse on different transformers in timesharing.Thereby both utilized the superiority of on-line monitoring, can reduce testing cost according to actual conditions again, and taken into account the needs of transformer off-line measurement.On the basis of the online detection of partial discharge of transformer, in conjunction with the off-line measurement technology, utilize Partial discharge detector of the present utility model, shelf depreciation that can many transformers of on-line measurement, but the shelf depreciation of off-line measurement transformer again.Thereby greatly reduce the cost of shelf depreciation on-line measurement, help applying of on-line measurement.
3. the utility model is simple in structure, has portable function, and is with low cost, easy to detect.
Description of drawings
Fig. 1 is a shape assumption diagram of the present utility model;
Fig. 2 is a sensor circuit synoptic diagram of the present utility model;
Fig. 3 is an electrical connection diagram of the present utility model;
Fig. 4 is the utility model industrial computer signal Processing synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is further described:
The profile of this detector 1 is a rectangular structure, and plate is provided with two-way simulating signal input channel in the back, one tunnel trigger pip input channel, a way word signal output channels; Top panel is one can arbitrarily adjust 12 inches LCD LCDs of angle.Its volume is not more than 500 * 300 * 500mm, and weight is not more than 15Kg, is easy to carry, and the movable type that can conveniently carry out the transformer partial discharge signal detects.
Control circuit in this detector casing consists of: sensor circuit, signal condition unit, data collecting card, industrial computer are formed.Sensor electrical route resistance R and capacitor C are formed, and the local discharge signal of coupling transformer, the sensor that this sensor circuit adopted is the punching High Frequency Current Sensor, be the Rogovski coil structure, its frequency response range is at 30k～3MHz, and the internal diameter size size is between 10mm～400mm.
Sensor circuit is connected with the input end of analog signal of signal condition unit, this signal condition unit is a BYTM-2 type signal condition module, be two input end of analog signal and two output terminals in the present embodiment, two output terminal connects two input ends of data collecting card, this data collecting card is 5102 Dual-Channel High-Speed Data Acquisition cards, the trigger pip output of signal condition unit connects the trigger end of data collecting card, and acquisition phase information also triggers phase place.The PCI slot of data acquisition card connection industrial computer, this industrial computer are a day brill 9002A industrial computer series, the I/O card connection signal condition unit of industrial computer, and signal condition unit, industrial computer adopt the 220V AC power.
Above-mentioned each electric component be connected to unique connection, therefore do not narrate concrete pin positions and connect and connected mode.
Principle of work of the present utility model is: sensors coupled to signal be input to the simulating signal input channel of detector, carry out processing such as program control amplification, decay, filtering by the signal condition unit, the BYTM-2 type signal condition module that this signal condition unit adopts the rich source Electric Applicance Co., Ltd in Shanghai Communications University, Xi'an to produce, its filter range is 40k～3MHz, program control amplification attenuation multiple is 0.1,1,10,100,1,000 five grades, range of signal is 0～10V, output signal range is between 0～10V, and program control multiple control data is imported by industrial workstation.In addition, signal condition unit further input transformer with the voltage transformer secondary signal, so that local discharge signal is carried out triggering collection.
Signal after the conditioning by industrial workstation with the data acquisition unit collection, this unit adopts America NI company 5102 Dual-Channel High-Speed Data Acquisition cards, this capture card is connected by the PCI slot with industrial computer, its two signal input parts, a triggering input end all link to each other with signal output part, the triggering output terminal of signal condition unit, this card data sampling speed is 20MS/s, and the analog input bandwidth is 15MHz.More than the contact of all simulating signal all have the signal shielding cable connection of BNC connector by two ends, the program control multiple control data of being issued the signal condition unit by the I/O card of industrial computer is connected by 68 parallel data lines.)
Signal after the collection disturbs inhibition, data analysis and demonstration by industrial computer.Disturb and suppress to comprise functions such as amplitude discriminating, adaptive digital filtering, threshold value setting, polarity discriminating, data analysis and demonstration comprise that shelf depreciation three-dimensional spectrum, two-dimentional spectrogram are added up, trend map demonstration etc. is put in office, and the shelf depreciation data after the analysis can transmit to exterior monitoring or control system by network interface card and netting twine.
When the charged operation of transformer, sensors coupled is to office's discharge signal, and process signal condition unit amplification filtering, carries out data acquisition, handles and analyzes through industrial computer, adopts polarity to differentiate interference suppression measures such as principle, digital filtering.Fig. 4 is the pulse signal after software processes, and wherein Fig. 4 (1), Fig. 4 (2) they are that polarity is opposite---internal discharge signal Processing synoptic diagram, and 4 (3), Fig. 4 (4) is that polarity is identical---external interference signals is handled synoptic diagram; Promptly think undesired signal when homophase two-way sensors coupled during to the pulse signal of identical polar, software suppresses it; Then think the discharge signal of transformer inside when two paths of signals polarity is opposite, software is preserved it.
In addition, utilize this device also to carry out repeatedly the off-line partial discharge of transformer and measure, at this moment, only need the transformer that breaks away from electrical network is supplied with a large power supply voltage, increase pair of sensors again and get final product in different substation.
Claims (2)
1. the device of online detection of shelf depreciation and offline inspection, by sensor, the signal condition unit, data collecting card, industrial computer is formed and is installed in the detector casing, it is characterized in that: in the detector casing control circuit is installed, this control circuit is by sensor circuit, the signal condition unit, data collecting card, industrial computer is formed, sensor circuit coupling local discharge signal also is connected with the input end of analog signal of signal condition unit, the output terminal of signal condition unit connects the input end of data collecting card, the trigger pip output of signal condition unit connects the trigger end of data collecting card, the I/O card connection signal condition unit of industrial computer, the PCI slot of data acquisition card connection industrial computer.
2. the device of online detection of shelf depreciation according to claim 1 and offline inspection, it is characterized in that: the sensor that described sensor circuit adopted is the punching High Frequency Current Sensor, described signal condition unit is a BYTM-2 type signal condition module, described data collecting card is 5102 Dual-Channel High-Speed Data Acquisition cards, and described industrial computer is a day brill 9002A industrial computer series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520130694 CN2886587Y (en) | 2005-12-22 | 2005-12-22 | A device for online and offline detecting local discharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520130694 CN2886587Y (en) | 2005-12-22 | 2005-12-22 | A device for online and offline detecting local discharging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2886587Y true CN2886587Y (en) | 2007-04-04 |
Family
ID=37961676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520130694 Expired - Lifetime CN2886587Y (en) | 2005-12-22 | 2005-12-22 | A device for online and offline detecting local discharging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2886587Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353881A (en) * | 2011-07-12 | 2012-02-15 | 江苏镇安电力设备有限公司 | Online capacitor monitoring system based on partial discharge monitoring |
| CN102830319A (en) * | 2012-09-18 | 2012-12-19 | 辽宁省电力有限公司电力科学研究院 | Device and method for on-line inspection on insulation state of zinc oxide arrester |
| CN103107597A (en) * | 2012-12-27 | 2013-05-15 | 上海欧忆智能网络有限公司 | Power distribution net box type transformer environmental parameters on-line monitoring system |
| CN103941164A (en) * | 2014-04-10 | 2014-07-23 | 江苏骏龙电力科技股份有限公司 | Portable intelligent dual-purpose electronic device for partial discharge and on-line monitoring of transformer |
| CN104132610A (en) * | 2014-08-22 | 2014-11-05 | 华北电力大学（保定） | Distribution network transformer low-voltage winding deformation belt electric detection device and method |
| CN105759084A (en) * | 2016-04-21 | 2016-07-13 | 安徽捷迅光电技术有限公司 | USB data line test tooling |
-
2005
- 2005-12-22 CN CN 200520130694 patent/CN2886587Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353881A (en) * | 2011-07-12 | 2012-02-15 | 江苏镇安电力设备有限公司 | Online capacitor monitoring system based on partial discharge monitoring |
| CN102830319A (en) * | 2012-09-18 | 2012-12-19 | 辽宁省电力有限公司电力科学研究院 | Device and method for on-line inspection on insulation state of zinc oxide arrester |
| CN102830319B (en) * | 2012-09-18 | 2016-02-24 | 辽宁省电力有限公司电力科学研究院 | A kind of zinc oxide lightning arrester insulation state measuring device with electricity and method |
| CN103107597A (en) * | 2012-12-27 | 2013-05-15 | 上海欧忆智能网络有限公司 | Power distribution net box type transformer environmental parameters on-line monitoring system |
| CN103107597B (en) * | 2012-12-27 | 2015-08-19 | 上海欧忆智能网络有限公司 | A kind of power matching network box type transformer environmental parameter on-line monitoring system |
| CN103941164A (en) * | 2014-04-10 | 2014-07-23 | 江苏骏龙电力科技股份有限公司 | Portable intelligent dual-purpose electronic device for partial discharge and on-line monitoring of transformer |
| CN104132610A (en) * | 2014-08-22 | 2014-11-05 | 华北电力大学（保定） | Distribution network transformer low-voltage winding deformation belt electric detection device and method |
| CN105759084A (en) * | 2016-04-21 | 2016-07-13 | 安徽捷迅光电技术有限公司 | USB data line test tooling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101196547A (en) | Live testing apparatus for local discharge based on ultrasound assistance | |
| CN201355384Y (en) | System for detecting and managing partial discharge of switch cabinet on-line | |
| CN2886587Y (en) | A device for online and offline detecting local discharging | |
| CN111856224A (en) | Partial discharge multi-source fusion detection system and method for high-voltage switch cabinet | |
| CN203658526U (en) | Live-line detection device used for partial discharging of distribution cable | |
| CN103323655B (en) | Non-contact alternating current and direct current crosstalk online detecting device and non-contact alternating current and direct current crosstalk online detecting method | |
| CN201611384U (en) | Motor status monitoring and failure diagnosis system | |
| CN104061850A (en) | Device for detecting deformation of transformer winding based on pulse on-line injection | |
| CN204044292U (en) | For the system of gas insulated metal enclosed swit chgear insulation defect partial discharge monitoring | |
| CN201247303Y (en) | Current sensor for on-line monitoring cable local discharge | |
| CN103472350A (en) | Transformer diagnosis system and diagnosis method | |
| CN210346899U (en) | Mechanical vibration abnormal state detection device for gas insulated metal enclosed switchgear | |
| CN103364699A (en) | Cable discharging fault detection device | |
| CN107449954A (en) | Power transformer iron core earth current holography on-Line Monitor Device and method | |
| CN108152774B (en) | On-site inspection equipment of fault arc detector and control method thereof | |
| CN103713244B (en) | A kind of live detection method for distribution cable shelf depreciation | |
| CN202885962U (en) | Detection and analytic system for gas insulation composite apparatus shell vibration signal in service | |
| CN102095765A (en) | System for measuring content of micro water in transformer oil on line | |
| CN104793136B (en) | A kind of high pressure SF6Circuit breaker electrical endurance monitoring apparatus | |
| CN213457262U (en) | Circuit breaker divide-shut brake coil repetitive pulse method detection device | |
| CN104101787A (en) | Portable low-voltage reactive compensation standard detection system and detection method | |
| CN203422419U (en) | Electrified tester for zinc oxide lightning arrester | |
| CN210136295U (en) | Transformer turn-to-turn short circuit on-line monitoring device based on exciting current | |
| CN108761297A (en) | A kind of dry-type air-core reactor partial discharges fault on-line computing model based on high-frequency signal | |
| CN106707115B (en) | Device for detecting partial discharge of high-voltage cable by reflection high-energy electron diffraction technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070404 |
|
| EXPY | Termination of patent right or utility model |