CN206584008U - Transformer hidden danger is discharged and winding deformation monitoring device - Google Patents
Transformer hidden danger is discharged and winding deformation monitoring device Download PDFInfo
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- CN206584008U CN206584008U CN201720320705.0U CN201720320705U CN206584008U CN 206584008 U CN206584008 U CN 206584008U CN 201720320705 U CN201720320705 U CN 201720320705U CN 206584008 U CN206584008 U CN 206584008U
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Abstract
The utility model provides a kind of transformer hidden danger and discharged and winding deformation monitoring device.The transformer hidden danger is discharged and winding deformation monitoring device includes：It is online to take energy module, traveling wave measurement module, power current acquisition module, power-frequency voltage acquisition module and wireless data transfer module, wherein, energy module is taken to be electrically connected with respectively with traveling wave measurement module, power current acquisition module, power-frequency voltage acquisition module and wireless data transfer module online；Traveling wave measurement module, power current acquisition module and power-frequency voltage acquisition module are electrically connected with wireless data transfer module respectively.By the utility model, the remote online monitoring of the electric discharge of transformer hidden danger and winding deformation is realized, the insecure problem of on-line monitoring of transformer hidden danger is solved.
Description
Technical field
The utility model is related to field transformer, is supervised in particular to a kind of electric discharge of transformer hidden danger and winding deformation
Survey device.
Background technology
Transformer is as one of power transmission and transforming equipment mostly important in power system, and its reliability service is for ensureing power network peace
It is complete significant.Transformer occurs catastrophe failure and may result in power system paralysis, triggers significant blackouts accident.
Power Transformer Faults mainly include two aspects, and one is paradoxical discharge caused by inside transformer tiny flaw,
The initial period that discharges is typically fainter, but as transformer is run for a long time, weak discharge gradually strengthens, and ultimately causes absolutely
Edge layer is damaged or transformer oil failure of insulation；Two be inside transformer electricity with magnetic interaction and act power, particularly exist
In the case of occurring the high current that short-circuit or other reasons are caused, it may appear that larger electric power, inside transformer element is by power
Effect and deform upon or displacement.
For inside transformer electric discharge, because prolonged weak discharge can make transformer oil chromatographic composition change, mesh
The preceding widely used detection method of comparison is to measure the chemical composition content in oil to reach the mesh of detection using oil colours spectrometry
, but accurately and reliably oil colours spectrometry is offline inspection, online oil chromatography monitoring method is still unstable.Also a kind of detection means
It is partial discharge monitoring system, but because local discharge signal is very faint, the shelf depreciation currently for transformer is supervised
Examining system also there is a situation where largely to report by mistake.For the deformation or displacement of Transformer Winding, currently rung substantially using offline frequency
Method is answered to be detected.Therefore, the above method can not still meet comprehensive, real-time, reliable Transformer's Condition Monitoring requirement.
Utility model content
The utility model provides a kind of transformer hidden danger and discharged and winding deformation monitoring device, at least to solve related skill
The insecure problem of the on-line monitoring of transformer hidden danger in art.
Discharged according to one side of the present utility model there is provided a kind of transformer hidden danger and winding deformation monitoring device,
Including：Online take can module, traveling wave measurement module, power current acquisition module, power-frequency voltage acquisition module and wireless data biography
Defeated module, wherein,
It is described it is online take can module respectively with the traveling wave measurement module, the power current acquisition module, the power frequency
Voltage acquisition module and the wireless data transfer module are electrically connected with；
The traveling wave measurement module, power current acquisition module and power-frequency voltage acquisition module respectively with the wireless data
Transport module is electrically connected with.
Alternatively, it is described to take energy module to include iron core and coil online, pass through the electromagnetic energy in sensor transformer outlet
Produce induced-current.
Alternatively, the traveling wave measurement module includes：Rogowski coil transformer, high-pass filter and high-frequency signal amplification
Device, wherein, transformer outlet passes through the Rogowski coil transformer, and the Rogowski coil transformer is used to measure the transformer
Current signal in outlet；The high-pass filter is used for the power frequency component for filtering out the corresponding voltage signal of the current signal,
The high-frequency signal amplifier is used to amplify the voltage signal after filtering through the high-pass filter.
Alternatively, the power current acquisition module includes Hall sensor, for according in the transformer outlet
Power current generates voltage signal.
Alternatively, the transformer hidden danger electric discharge and winding deformation monitoring device include cylindrical metal shell, metal electricity
Pole plate and sampling capacitance are pressed, axis of the transformer outlet along the cylindrical metal shell is passed through, the voltage metal pole plate leads to
Cross dielectric adhesive be fixed on the cylindrical metal outer surface of outer cover and with the cylindrical metal shell coaxial line, it is described to adopt
The cylindrical metal shell and the voltage metal pole plate is electrically connected in sample electric capacity two ends, and the power-frequency voltage gathers mould
Block is in parallel with the sampling capacitance.
By the utility model, the transformer hidden danger electric discharge of use and winding deformation monitoring device, including：Online take can mould
Block, traveling wave measurement module, power current acquisition module, power-frequency voltage acquisition module and wireless data transfer module, wherein, online
Take can module respectively with traveling wave measurement module, power current acquisition module, power-frequency voltage acquisition module and wireless data transmission mould
Block is electrically connected with；Traveling wave measurement module, power current acquisition module and power-frequency voltage acquisition module respectively with wireless data transmission
Module is electrically connected with.Said apparatus takes energy module for power supply by online, measures high frequency traveling wave signal by traveling wave measurement module, passes through
Power current acquisition module and power-frequency voltage acquisition module gather power current and power-frequency voltage respectively, finally by wireless data
Transport module sends out data, realizes the remote online monitoring of the electric discharge of transformer hidden danger and winding deformation, solves change
The insecure problem of on-line monitoring of depressor hidden danger.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes the part of the application,
Schematic description and description of the present utility model is used to explain the utility model, does not constitute to of the present utility model improper
Limit.In the accompanying drawings：
Fig. 1 is according to the electric discharge of the transformer hidden danger of the utility model embodiment and winding deformation monitoring device；
Fig. 2 is to monitor schematic diagram on-line according to the short-circuit reactance of the utility model embodiment；
Fig. 3 is the alternative construction schematic diagram for taking energy module online according to the utility model embodiment；
Fig. 4 is the schematic diagram of the current sense structure of the traveling wave measurement module according to the utility model embodiment；
Fig. 5 is the schematic diagram of the collection power-frequency voltage according to the utility model embodiment；
Fig. 6 is to be arranged on transformation according to the electric discharge of the transformer hidden danger of the utility model embodiment and winding deformation monitoring device
Schematic diagram on device.
Embodiment
Describe the utility model in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that not rushing
In the case of prominent, the feature in embodiment and embodiment in the application can be mutually combined.
A kind of electric discharge of transformer hidden danger and winding deformation monitoring device are provided in the present embodiment.Fig. 1 is according to this reality
The electric discharge of transformer hidden danger and winding deformation monitoring device with new embodiment, as shown in figure 1, the device includes：Take energy online
Module 1, traveling wave measurement module 2, power current acquisition module 3, power-frequency voltage acquisition module 4 and wireless data transfer module 5, its
In,
It is online take can module 1 respectively with traveling wave measurement module 2, power current acquisition module 3, power-frequency voltage acquisition module 4
It is electrically connected with wireless data transfer module 5；
Traveling wave measurement module 2, power current acquisition module 3 and power-frequency voltage acquisition module 4 respectively with wireless data transmission
Module 5 is electrically connected with.
Above-mentioned takes energy module 1 by generating induced-current or sensing from inductive electromagnetic energy in transformer outlet online
Voltage, and then be respectively other module for power supply.
Above-mentioned traveling wave measurement module 2, power current acquisition module 3 and power-frequency voltage acquisition module 4 is respectively from transformer
The electric discharge of measuring transformer hidden danger and winding deformation monitor required parameter in outlet, and the parameter that measurement is obtained is sent to wirelessly
Data transmission module 5, and then the processing center for being sent to distal end by wireless data transfer module 5 carries out respective handling.
By above-mentioned device, high frequency traveling wave signal is measured by traveling wave measurement module 2, and high frequency traveling wave signal can reflect
The paradoxical discharge of inside transformer, thus the monitoring of transformer hidden danger electric discharge can be realized.Inside transformer winding deformation or
When there is displacement defect, the short-circuit reactance of transformer will change, therefore, and said apparatus can be by transformer short-circuit
The monitoring of reactance monitors inside transformer winding deformation or displacement defect.For measuring transformer short-circuit reactance, above-mentioned dress
Putting needs collection power current and power-frequency voltage, and then the short-circuit reactance value of calculating transformer.
Fig. 2 is to monitor schematic diagram on-line according to the short-circuit reactance of the utility model embodiment, with reference to Fig. 2, transformer it is short
Road reactance value is calculated by following equation：
Wherein, XshFor short-circuit reactance value, X1For primary side reactance value, X2Primary side is arrived for the conversion of secondary side reactance value
Value, U1For primary side terminal voltage, U12The value to primary side, U are converted for secondary side terminal voltage1And U12Subscript A, B represent carry out
Measure twice, one-shot measurement is referred to as A, B is once referred to as in addition.
Alternatively, energy module 1 is taken to include iron core and coil online, the electromagnetic energy passed through in sensor transformer outlet is produced
Induced-current.Fig. 3 is the alternative construction schematic diagram for taking energy module online according to the utility model embodiment, as shown in figure 3, iron
Core 18 is used in the form of double-iron core is connected induce alternating voltage from primary side, and passes through front end impact protection circuit 19, whole
Filter circuit 20, DC/DC translation circuits 21, the output direct voltage source of mu balanced circuit 22 are flowed, is powered.It should be noted that
It is online take can module 1 be not limited to structure shown in Fig. 3, can also be it is any in the prior art can be from industrial frequency AC power transmission line
The upper structure for obtaining electric energy.
Weak discharge is the root of many major accidents in transformer, weak discharge must along with electric current generation, this
The kind general amplitude of electric current is smaller, frequency is higher, and electric current is propagated along Transformer Winding.
Traveling wave measurement module 2 can monitor high-frequency traveling wave current in real time, using wideband transformer technology and to power frequency component
It is high suppress, to the high amplifying technique of high-frequency signal, monitor the paradoxical discharge situation of transformer.Alternatively, traveling wave measurement module 2
Including：Rogowski coil transformer, high-pass filter and high-frequency signal amplifier, wherein, transformer outlet is mutual through Rogowski coil
Sensor, the current signal that Rogowski coil transformer is used in measuring transformer outlet；High-pass filter is used to filter out current signal
The power frequency component of corresponding voltage signal, high-frequency signal amplifier is used to amplify the voltage signal after filtering through high-pass filter.
Fig. 4 is the schematic diagram of the current sense structure of the traveling wave measurement module according to the utility model embodiment, such as Fig. 4 institutes
Show, transformer outlet passes through Rogowski coil transformer, realizes the measurement of electric current in transformer outlet.It is former by Rogowski coil transformer
Begin the current signal gathered, is filtered by preposition high-pass filter, is re-fed into multistage 50Hz power frequency notch filters and high pass amplifying ring
Section, removes power frequency component and amplifies high-frequency signal, finally via vast scale figure amplifier, obtain pure high-frequency signal.
Wherein, power frequency component refers to the voltage signal that frequency is 50Hz；High-frequency signal refers to that frequency is 1kHz~5MHz's
Voltage signal.
Transformer is under the impact of extraneous high current, and inner member geometry, locus change, the present apparatus
Power current acquisition module 3 and power-frequency voltage acquisition module 4 measure power frequency physical quantity while travelling wave current is monitored on-line,
To calculate short-circuit reactance value in real time, so as to reflect whether foreign impacts generate influence on transformer by short-circuit reactance.
Alternatively, power current acquisition module 3 includes Hall sensor, for according to the power current in transformer outlet
Generate voltage signal.
Fig. 5 is the schematic diagram of the collection power-frequency voltage according to the utility model embodiment, as shown in figure 5, alternatively, it is described
Transformer hidden danger is discharged and winding deformation monitoring device includes cylindrical metal shell, voltage metal pole plate and sampling capacitance, is become
Axis of the depressor outlet along the cylindrical metal shell is passed through, and the voltage metal pole plate is fixed on institute by dielectric adhesive
State cylindrical metal outer surface of outer cover and with the cylindrical metal shell coaxial line, the sampling capacitance two ends electrically connect respectively
The cylindrical metal shell and the voltage metal pole plate are connect, the power-frequency voltage acquisition module and the sampling capacitance are simultaneously
Connection.So voltage pole plate forms 2 electric capacity C with metal shell and the earth respectivelylAnd C2, so that capacitive divider is constituted, in Cl
Two ends parallel connection sampling capacitance CM, by measuring CMVoltage can obtain line voltage distribution.
Alternatively, wireless data transfer module 5 can realize remote data transmission using any in the prior art
Module or unit, for example：WIFI module, mobile communication module, bluetooth module etc..In the present embodiment, wireless data transmission
Module 5 can specifically select the wireless module MC35 of Siemens, and the module has 232 interfaces.Data Collection and transmission control are equal
Carried out by microprocessor MSP430 by 232 interfaces using AT Command Set.The working method of MC35 wireless modules part, work shape
State, action and switching on and shutting down etc. are controlled by microprocessor MSP430.Microprocessor MSP430 is monitored by an I/O pin
Wireless module MC35 DSR0 pins, thus monitor wireless module MC35 whether (be when pin is high level in open state
Shutdown, low level are for start).Microprocessor MSP430 and wireless module MC35 data transfer passes through asynchronous serial communication
Interface is realized.
Fig. 6 is to be arranged on transformation according to the electric discharge of the transformer hidden danger of the utility model embodiment and winding deformation monitoring device
Schematic diagram on device, as shown in fig. 6, the electric discharge of transformer hidden danger and winding deformation monitoring device 10 are arranged on transformer outlet 20
On, transformer outlet 20 includes the three-phase outlet of each voltage class winding.
In above-mentioned transformer hidden danger electric discharge and winding deformation monitoring device, power current module uses Hall sensor,
Power current is converted into voltage signal, and with analog-to-digital conversion (analog-to-digital converter, referred to as ADC)
It is acquired.Power-frequency voltage signal is obtained using the power-frequency voltage in principle of capacitive divider measuring transformer outlet.Traveling wave
Measurement module gathers high-frequency traveling wave current signal using Rogowski coil as transformer.The energy of whole device by taking energy online
Module is obtained, and using the electromagnetic energy on iron core sensor wire, can be realized and be taken energy online.Transformer hidden danger is discharged and winding becomes
Transformer discharge high-frequency traveling wave current, power current, the power-frequency voltage of shape monitoring device collection pass through wireless data transmission unit
(DTU) wirelessly it is uploaded in real time in the data processing server on backstage.Package unit is appointed without being installed in transformer station
What his auxiliary device, take can, data are sent, data acquisition is on-line system.
The transformer hidden danger electric discharge provided by the utility model and winding deformation monitoring device, utilize short-circuit reactance method pair
Inside transformer deformation or displacement defect are monitored, and reflect that inside transformer occurs using the measurement of high frequency traveling wave various different
Normal electric discharge, being capable of accurate early warning transformer in time so as to realize comprehensive, the real time on-line monitoring to transformer hidden failure
Various hidden danger.Transformer hidden danger is discharged and winding deformation monitoring device encapsulation degree is high, integrated power-frequency voltage, power current and row
Ripple current measurement is easy to use in one, and the measurement amount for solving conventional apparatus is single, need have a power failure detection, measurement cloth
The shortcomings of line is cumbersome, can in real time be monitored to transformer exception electric discharge, winding deformation situation in the case where not having a power failure, be had
Have the advantages that it is comprehensive, stably, reliably monitor, monitoring result can to a variety of hidden failures of transformer carry out early warning, it is ensured that power network
Safe operation.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.
Claims (5)
1. a kind of transformer hidden danger electric discharge and winding deformation monitoring device, it is characterised in that including：Online take can module, traveling wave survey
Module, power current acquisition module, power-frequency voltage acquisition module and wireless data transfer module are measured, wherein,
It is described it is online take can module respectively with the traveling wave measurement module, the power current acquisition module, the power-frequency voltage
Acquisition module and the wireless data transfer module are electrically connected with；
The traveling wave measurement module, power current acquisition module and power-frequency voltage acquisition module respectively with the wireless data transmission
Module is electrically connected with.
2. transformer hidden danger electric discharge according to claim 1 and winding deformation monitoring device, it is characterised in that described online
Energy module is taken to include iron core and coil, the electromagnetic energy passed through in sensor transformer outlet produces induced-current.
3. transformer hidden danger electric discharge according to claim 1 and winding deformation monitoring device, it is characterised in that the traveling wave
Measurement module includes：Rogowski coil transformer, high-pass filter and high-frequency signal amplifier, wherein, transformer outlet passes through institute
Rogowski coil transformer is stated, the Rogowski coil transformer is used to measure the current signal in the transformer outlet；The height
Bandpass filter is used for the power frequency component for filtering out the corresponding voltage signal of the current signal, and the high-frequency signal amplifier is used to put
Voltage signal after the big filtering through the high-pass filter.
4. transformer hidden danger electric discharge according to claim 1 and winding deformation monitoring device, it is characterised in that the power frequency
Current acquisition module includes Hall sensor, for generating voltage signal according to the power current in the transformer outlet.
5. transformer hidden danger electric discharge according to claim 1 and winding deformation monitoring device, it is characterised in that the transformation
Device hidden danger is discharged and winding deformation monitoring device includes cylindrical metal shell, voltage metal pole plate and sampling capacitance, transformer
Axis of the outlet along the cylindrical metal shell is passed through, and the voltage metal pole plate is fixed on the circle by dielectric adhesive
Cylindrical metal outer surface of outer cover and with the cylindrical metal shell coaxial line, institute is electrically connected in the sampling capacitance two ends
Cylindrical metal shell and the voltage metal pole plate are stated, the power-frequency voltage acquisition module is in parallel with the sampling capacitance.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720320705.0U CN206584008U (en) | 2017-03-28 | 2017-03-28 | Transformer hidden danger is discharged and winding deformation monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720320705.0U CN206584008U (en) | 2017-03-28 | 2017-03-28 | Transformer hidden danger is discharged and winding deformation monitoring device |
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| CN206584008U true CN206584008U (en) | 2017-10-24 |
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| CN201720320705.0U Active CN206584008U (en) | 2017-03-28 | 2017-03-28 | Transformer hidden danger is discharged and winding deformation monitoring device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817377A (en) * | 2017-11-17 | 2018-03-20 | 国网江苏省电力有限公司检修分公司 | It is a kind of to be set effective the hidden danger traveling wave detector device for suppressing interference outside based on sensor |
| CN108279357A (en) * | 2017-12-28 | 2018-07-13 | 唐智科技湖南发展有限公司 | A kind of bow net hit detection device |
| CN110196370A (en) * | 2019-06-26 | 2019-09-03 | 山东电工电气集团智能电气有限公司 | The monitoring method and device of transformer |
| CN116400180A (en) * | 2023-05-17 | 2023-07-07 | 国网北京市电力公司检修分公司 | Partial discharge recognition system and method |
| CN116840744A (en) * | 2023-09-01 | 2023-10-03 | 国网江苏省电力有限公司常州供电分公司 | Transformer winding deformation on-line detection sensing device |
-
2017
- 2017-03-28 CN CN201720320705.0U patent/CN206584008U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107817377A (en) * | 2017-11-17 | 2018-03-20 | 国网江苏省电力有限公司检修分公司 | It is a kind of to be set effective the hidden danger traveling wave detector device for suppressing interference outside based on sensor |
| CN108279357A (en) * | 2017-12-28 | 2018-07-13 | 唐智科技湖南发展有限公司 | A kind of bow net hit detection device |
| CN110196370A (en) * | 2019-06-26 | 2019-09-03 | 山东电工电气集团智能电气有限公司 | The monitoring method and device of transformer |
| CN116400180A (en) * | 2023-05-17 | 2023-07-07 | 国网北京市电力公司检修分公司 | Partial discharge recognition system and method |
| CN116400180B (en) * | 2023-05-17 | 2023-11-14 | 国网北京市电力公司检修分公司 | Partial discharge recognition system and method |
| CN116840744A (en) * | 2023-09-01 | 2023-10-03 | 国网江苏省电力有限公司常州供电分公司 | Transformer winding deformation on-line detection sensing device |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Han Laijun Inventor after: Wang Luliang Inventor after: Huang Song Inventor after: Wang Sijie Inventor after: Zhao Hailong Inventor before: Han Laijun Inventor before: Zhao Chun Inventor before: Wang Luliang Inventor before: Jiang Zihao Inventor before: Huang Song Inventor before: Qian Guanjun Inventor before: Wang Sijie Inventor before: Zhao Hailong |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180130 Address after: 570311 Hainan province Haikou hiray posterior No. 23 Patentee after: Hainan Electric Power Grid Co., Ltd. Electric Power Research Institute Address before: No. 32, Hai Fu Road, Haikou, Hainan Province Co-patentee before: Wuhan Sunshine Power Science & Technology Co., Ltd. Patentee before: HAINAN STATE GRID CO., LTD. |