CN108414900A - A kind of method and system of detection partial discharge of transformer - Google Patents
A kind of method and system of detection partial discharge of transformer Download PDFInfo
- Publication number
- CN108414900A CN108414900A CN201810189078.0A CN201810189078A CN108414900A CN 108414900 A CN108414900 A CN 108414900A CN 201810189078 A CN201810189078 A CN 201810189078A CN 108414900 A CN108414900 A CN 108414900A
- Authority
- CN
- China
- Prior art keywords
- transformer
- typical
- partial discharge
- database
- data value
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
A kind of method and system of detection partial discharge of transformer disclosed by the invention, are related to a kind of partial discharge of transformer detection technique field.The method includes obtaining transformer parameter；According to the parameter of the transformer, the typical database of the pulse current of transformer is established；According to typical database, typical data value is set；The local discharge signal of acquisition transformer in real time；By the local discharge signal of the collected transformer compared with typical data value, if being less than typical data value, do not alarm, if it exceeds typical data value, then five steps such as alarm.This method uses tricks point counting analysis instead of cumbersome and measure big test job, has not only saved human and material resources and has also greatly improved work efficiency.And when obtaining local discharge signal, local discharge signal is acquired using detection impedance instrument and partial discharge detection device, not outage detection is realized to the local discharge signal of transformer.
Description
Technical field
This application involves partial discharge of transformer detection technique field more particularly to a kind of detection partial discharge of transformer
Method and system.
Background technology
Transformer is one of substation's important equipment, is the core component of power grid composition, and state of insulation is always to run
The important detection object of maintenance personnel.Partial discharge of transformer is the main reason for causing transformer insulated deterioration, and is insulation
The tendency and the form of expression of deterioration.
Partial discharge of transformer detection is important one in electrical test of transformer, periodic detection partial discharge of transformer
Situation is not only the important means to exercise supervision to the transformer insulated level, and judges having for its long-term safety operation of insulating
Efficacious prescriptions method.But it when the conventional pulse current method of application carries out partial discharge test to transformer, needs to stop transport in transformer, therefore
It is difficult to, according to the periodicity needed for Condition Maintenance Method of Transformer pattern, regular requirement, carry out Partial Discharge Detection.Also, tradition
Partial discharge of transformer detection method that there are detection devices is complicated, personnel are numerous, it is scarce to test dangerous height, convenience difference etc.
Point.
There are DGA methods, supercritical ultrasonics technology, RIV methods, flash spotting, radio frequency to detect currently, carrying out Partial Discharge Detection to transformer
Method, chemical method and pulse current method.DGA methods by detect transformer oil decompose generate various gases composition and concentration come
Determine malfunction.Though this method can realize in the on-line fault diagnosis of transformer that DGA methods are due to oil gas analysis at present
One long-term monitoring process, can not find catastrophic discontinuityfailure, and fault location can not be being carried out plus this method.Supercritical ultrasonics technology,
RIV methods are mainly complementary the presence or absence of judgement Partial discharge signal, and interference is larger, cannot be positioned to failure.Flash spotting utilizes
The light radiation that shelf depreciation generates is detected.In laboratory partial discharge feature and insulation degradation etc. have been analyzed using flash spotting
It has made great progress, but since flash spotting equipment complex and expensive, sensitivity are low, and it is just transparent to need detected material to verify
, thus can not apply in practice.Radio frequency detection method measures signal using fruit Paderewski coil from transformer neutral point, but
For three-phase power transformer, obtained signal is the summation of three-phase Partial discharge signal, can not be differentiated, and signal easily by
External interference.
Pulse current method has the characteristics that high sensitivity, is that current International Electrotechnical Commission recommends to carry out the logical of shelf depreciation
With method, field test is also more to be adopted this method.
Realize that these methods all need equipment to have a power failure at present, pulse current method be most directly be also most effective test method,
But on condition that need to have a power failure can just be detected, and detect intricate operation, a large amount of human and material resources need to be consumed.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of reasonable design, safe operation and convenient realities
Transformer layout discharge detection method.
On the one hand, this application provides a kind of method of detection partial discharge of transformer, partial discharge of transformer is detected
Method includes following rapid：
Transformer parameter is obtained, the transformer parameter includes transformer model, number, producer, connection set, electric discharge
Amount；
According to transformer parameter, the typical database of the pulse current of transformer is established；
According to typical database, typical data value is set；
The local discharge signal of acquisition transformer in real time；
By the local discharge signal of the collected transformer compared with typical data value, if being less than typical data
Value, then do not alarm, if it exceeds typical data value, then alarm.
Preferably, described according to transformer parameter, the typical database for establishing the pulse current of transformer includes：
According to transformer parameter, the model database of transformer is established；
According to the model database, the typical collection of illustrative plates of the pulse current of transformer is obtained；
The typical collection of illustrative plates is analyzed, the typical database of the pulse current of transformer is established.
Preferably, the local discharge signal of the real-time acquisition transformer includes：
Obtain the current signal of partial discharge of transformer；
The current signal is converted into the voltage signal of partial discharge of transformer；
The voltage signal is converted into local discharge signal.
Preferably, the acquisition transformer parameter, the transformer parameter include transformer model, number, producer, connection
Group, discharge capacity and the parameter according to transformer, establish the typical database of the pulse current of transformer, are using limited
Meta analysis software realization.
On the other hand, this application provides a kind of systems of detection partial discharge of transformer, including acquisition module, typical number
According to library structure module, acquisition module, comparison module, alarm module；The acquisition module, typical database structure module, acquisition
Module, comparison module, alarm module are sequentially connected；
For the acquisition module for obtaining transformer parameter, the transformer parameter includes transformer model, number, factory
Family, connection set, discharge capacity；
The typical database structure module is used for the parameter according to transformer, and transformation is established using finite element analysis software
The typical database of the pulse current of device；
The acquisition module is used to acquire the local discharge signal of transformer；
The comparison module is used for by the local discharge signal of the collected transformer compared with typical data value, than
Whether the local discharge signal for relatively obtaining transformer has been more than exemplary value；
The alarm module is used to send out alarm to staff, if being less than typical data value, does not alarm,
If it exceeds typical data value, then alarm.
Preferably, the typical database structure module includes model data construction unit, typical collection of illustrative plates construction unit, divides
Analyse modeling unit；The model data construction unit, typical collection of illustrative plates construction unit, analysis modeling unit are sequentially connected；
The data construction unit is used to, according to transformer parameter, establish the model database of transformer；
Typical case's collection of illustrative plates construction unit is used to, according to the model database, transformation is obtained by finite element analysis software
The typical collection of illustrative plates of the pulse current of device；
The analysis modeling unit is used to analyze the typical collection of illustrative plates, then builds typical database.
Preferably, the system also includes detection impedance instrument and partial discharge detection devices, for detecting partial discharge of transformer
Current signal, reconvert is at shelf depreciation after the current signal is then converted into the voltage signal of partial discharge of transformer
Signal.
By above technical scheme it is found that a kind of method and system of detection partial discharge of transformer disclosed by the invention, institute
The method of stating includes obtaining transformer parameter；According to the parameter of the transformer, the typical data of the pulse current of transformer is established
Library；According to typical database, typical data value is set；The local discharge signal of acquisition transformer in real time；It will be collected described
The local discharge signal of transformer, if being less than typical data value, is not alarmed compared with typical data value, if it exceeds allusion quotation
Type data value, then alarm etc. five steps.This method uses tricks point counting analysis instead of cumbersome and measure big test job, not only saves
About human and material resources also greatly improve work efficiency.And when obtaining local discharge signal, using detection impedance instrument and partial discharge
Detection device acquires local discharge signal, and not outage detection is realized to the local discharge signal of transformer.
Description of the drawings
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other drawings may also be obtained based on these drawings.
Fig. 1 is a kind of flow chart of one embodiment of the method for detection partial discharge of transformer provided by the invention；
Fig. 2 is a kind of flow chart of another embodiment of the method for detection partial discharge of transformer provided by the invention；
Fig. 3 is a kind of structural schematic diagram of the system of detection partial discharge of transformer provided by the invention；
Fig. 4 is the concrete structure schematic diagram that typical database builds module.
Specific implementation mode
With reference to the attached drawing in the application, technical solutions in the embodiments of the present application is clearly and completely described,
Obviously, described embodiment is only a part of the embodiment of the application, instead of all the embodiments.Based in the application
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
It shall fall within the protection scope of the present invention.
Many details are elaborated in the following description to facilitate a thorough understanding of the present invention, still the present invention can be with
It is different from the other modes that describe again using other to implement, those skilled in the art can be without prejudice to the application intension
In the case of do similar popularization, therefore the present invention is not limited by following public specific embodiment.
On the one hand, referring to Fig. 1, for invent a kind of detection partial discharge of transformer provided method one embodiment stream
Cheng Tu.
The method of detection partial discharge of transformer provided in an embodiment of the present invention, including：
S11, transformer parameter is obtained, the transformer parameter includes transformer model, number, producer, connection set, puts
Electricity；
S12, according to transformer parameter, establish the typical database of the pulse current of transformer；
S13, according to typical database, set typical data value；
The local discharge signal of S14, in real time acquisition transformer；
S15, by the local discharge signal of the collected transformer compared with typical data value, if being less than typical case
Data value is not alarmed then, if it exceeds typical data value, then alarm.
By above technical scheme it is found that a kind of method and system of detection partial discharge of transformer disclosed by the invention, institute
The method of stating includes obtaining transformer parameter；According to the parameter of the transformer, the typical data of the pulse current of transformer is established
Library；According to typical database, typical data value is set；The local discharge signal of acquisition transformer in real time；It will be collected described
The local discharge signal of transformer, if being less than typical data value, is not alarmed compared with typical data value, if it exceeds allusion quotation
Type data value, then alarm etc. five steps.This method uses tricks point counting analysis instead of cumbersome and measure big test job, not only saves
About human and material resources also greatly improve work efficiency.And when obtaining local discharge signal, using detection impedance instrument and partial discharge
Detection device acquires local discharge signal, and not outage detection is realized to the local discharge signal of transformer.
Referring to Fig. 2, to invent the flow chart of a kind of method of detection partial discharge of transformer another embodiment provided.
Method in another embodiment includes：
S21, transformer parameter is obtained, the transformer parameter includes transformer model, number, producer, connection set, puts
Electricity；
S22, according to transformer parameter, establish the model database of transformer；
S23, according to the model database, obtain the typical collection of illustrative plates of the pulse current of transformer；
S24, the typical collection of illustrative plates is analyzed, establishes the typical database of the pulse current of transformer；
S25, according to typical database, set typical data value；
S26, the current signal for obtaining partial discharge of transformer；
S27, the voltage signal that the current signal is converted into partial discharge of transformer；
S28, the voltage signal is converted into local discharge signal；
S29, by the local discharge signal of the collected transformer compared with typical data value, if being less than typical case
Data value is not alarmed then, if it exceeds typical data value, then alarm.
Further, the acquisition transformer parameter, the transformer parameter include transformer model, number, producer, connection
Group, discharge capacity and the parameter according to transformer are tied, establishes the typical database of the pulse current of transformer, being use has
Finite element analysis software realization.
Finite element analysis (FEA, Finite Element Analysis) is using the method for mathematical approach to actual physical system
System (geometry and load working condition) is simulated.Utilize simple and interaction element (i.e. unit), so that it may with Finite Number
The unknown quantity of amount goes to approach the real system of unlimited unknown quantity.
Finite element analysis is solved again after replacing challenge with better simply problem.It is regarded as domain is solved by many
The referred to as small interconnection subdomain composition of finite element, assumes suitable (better simply) approximate solution to each unit, then pushes away
Lead solve this domain it is total meet condition (equilibrium condition of such as structure), to obtain the solution of problem.Because practical problem by compared with
Simple question is replaced, so this solution not instead of Exact Solutions, approximate solution.Since most of practical problems are difficult to obtain standard
Really solution, and not only computational accuracy is high for finite element, but also various complicated shapes are adapted to, thus become effective project analysis
Means.
Finite element is that those gather together and can indicate the discrete unit of practical continuous domain.Such as it is (limited with polygon
A straight line units) circle is approached to acquire round perimeter, but it is suggested as a kind of method, then is nearest thing.With calculating
Machine technology fast development and it is universal, finite element method expands to almost all of section from Structural Engineering strength analysis calculation rapidly
Learn technical field, become it is a kind of it is rich and varied, be widely used and the numerical analysis method of practicality and high efficiency.
By above technical scheme it is found that a kind of method and system of detection partial discharge of transformer disclosed by the invention, institute
The method of stating includes obtaining transformer parameter；According to the parameter of the transformer, the typical data of the pulse current of transformer is established
Library；According to typical database, typical data value is set；The local discharge signal of acquisition transformer in real time；It will be collected described
The local discharge signal of transformer, if being less than typical data value, is not alarmed compared with typical data value, if it exceeds allusion quotation
Type data value, then alarm etc. five steps.This method uses tricks point counting analysis instead of cumbersome and measure big test job, not only saves
About human and material resources also greatly improve work efficiency.And when obtaining local discharge signal, using detection impedance instrument and partial discharge
Detection device acquires local discharge signal, and not outage detection is realized to the local discharge signal of transformer.
On the other hand, shown in Figure 3, for a kind of structure of the system of detection partial discharge of transformer provided by the invention
Schematic diagram includes acquisition module, typical database structure the present invention also provides a kind of system of detection partial discharge of transformer
Module, acquisition module, comparison module, alarm module；The acquisition module, acquisition module, compares typical database structure module
Module, alarm module are sequentially connected；
For the acquisition module for obtaining transformer parameter, the transformer parameter includes transformer model, number, factory
Family, connection set, discharge capacity；
The typical database structure module is used for the parameter according to transformer, and transformation is established using finite element analysis software
The typical database of the pulse current of device；
The acquisition module is used to acquire the local discharge signal of transformer；
The comparison module is used for by the local discharge signal of the collected transformer compared with typical data value, than
Whether the local discharge signal for relatively obtaining transformer has been more than exemplary value；
The alarm module is used to send out alarm to staff, if being less than typical data value, does not alarm,
If it exceeds typical data value, then alarm.
Further, as shown in figure 4, typical database structure module includes model data construction unit, typical figure
Compose construction unit, analysis modeling unit；The model data construction unit, typical collection of illustrative plates construction unit, analysis modeling unit according to
Secondary connection；
The data construction unit is used to, according to transformer parameter, establish the model database of transformer；
Typical case's collection of illustrative plates construction unit is used to, according to the model database, transformation is obtained by finite element analysis software
The typical collection of illustrative plates of the pulse current of device；
The analysis modeling unit is used to analyze the typical collection of illustrative plates, then builds typical database.
Further, the acquisition module includes that detection impedance instrument and partial discharge detection device are locally put for detecting transformer
The current signal of electricity, reconvert is put at part after the current signal is then converted into the voltage signal of partial discharge of transformer
Electric signal.
By above technical scheme it is found that a kind of method and system of detection partial discharge of transformer disclosed by the invention, institute
The method of stating includes obtaining transformer parameter；According to the parameter of the transformer, the typical data of the pulse current of transformer is established
Library；According to typical database, typical data value is set；The local discharge signal of acquisition transformer in real time；It will be collected described
The local discharge signal of transformer, if being less than typical data value, is not alarmed compared with typical data value, if it exceeds allusion quotation
Type data value, then alarm etc. five steps.This method uses tricks point counting analysis instead of cumbersome and measure big test job, not only saves
About human and material resources also greatly improve work efficiency.And when obtaining local discharge signal, using detection impedance instrument and partial discharge
Detection device acquires local discharge signal, and not outage detection is realized to the local discharge signal of transformer.
The application above example is only for technical scheme for example, being not intended to limit the present invention.
Therefore, the scope of the present invention, should be as listed in the claims.
Claims (7)
1. a kind of method of detection partial discharge of transformer, which is characterized in that including steps are as follows：
Transformer parameter is obtained, the transformer parameter includes transformer model, number, producer, connection set, discharge capacity；
According to transformer parameter, the typical database of the pulse current of transformer is established；
According to typical database, typical data value is set；
The local discharge signal of acquisition transformer in real time；
By the local discharge signal of the collected transformer compared with typical data value, if being less than typical data value,
It does not alarm then, if it exceeds typical data value, then alarm.
2. the method for detection partial discharge of transformer according to claim 1, which is characterized in that described to be joined according to transformer
Number, the typical database for establishing the pulse current of transformer include：
According to transformer parameter, the model database of transformer is established；
According to the model database, the typical collection of illustrative plates of the pulse current of transformer is obtained；
The typical collection of illustrative plates is analyzed, the typical database of the pulse current of transformer is established.
3. the method for detection partial discharge of transformer according to claim 1, which is characterized in that the real-time acquisition transformation
The local discharge signal of device includes：
Obtain the current signal of partial discharge of transformer；
The current signal is converted into the voltage signal of partial discharge of transformer；
The voltage signal is converted into local discharge signal.
4. the method for detection partial discharge of transformer according to claim 1, which is characterized in that the acquisition transformer ginseng
Number, the transformer parameter includes transformer model, number, producer, connection set, discharge capacity and the ginseng according to transformer
Number, is established the typical database of the pulse current of transformer, is realized using finite element analysis software.
5. a kind of system of detection partial discharge of transformer, which is characterized in that the system packet of the detection partial discharge of transformer
Include acquisition module, typical database structure module, acquisition module, comparison module, alarm module；The acquisition module, typical number
It is sequentially connected according to library structure module, acquisition module, comparison module, alarm module；
For the acquisition module for obtaining transformer parameter, the transformer parameter includes transformer model, number, producer, connection
Tie group, discharge capacity；
The typical database structure module is used for the parameter according to transformer, and transformer is established using finite element analysis software
The typical database of pulse current；
The acquisition module is used to acquire the local discharge signal of transformer；
The comparison module is used for the local discharge signal of the collected transformer compared with typical data value, is compared
Whether the local discharge signal to transformer has been more than exemplary value；
The alarm module is used to send out alarm to staff, if being less than typical data value, does not alarm, if
More than typical data value, then alarm.
6. the system of detection partial discharge of transformer according to claim 5, which is characterized in that the typical database structure
Modeling block includes model data construction unit, typical collection of illustrative plates construction unit, analysis modeling unit；The model data structure is single
Member, typical collection of illustrative plates construction unit, analysis modeling unit are sequentially connected；
The data construction unit is used to, according to transformer parameter, establish the model database of transformer；
Typical case's collection of illustrative plates construction unit is used to, according to the model database, transformer is obtained by finite element analysis software
The typical collection of illustrative plates of pulse current；
The analysis modeling unit is used to analyze the typical collection of illustrative plates, then builds typical database.
7. the system of detection partial discharge of transformer according to claim 5, which is characterized in that the acquisition module includes
Detect impedance instrument and partial discharge detection device, the current signal for detecting partial discharge of transformer, then by the current signal
Reconvert is at local discharge signal after being converted into the voltage signal of partial discharge of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810189078.0A CN108414900A (en) | 2018-03-08 | 2018-03-08 | A kind of method and system of detection partial discharge of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810189078.0A CN108414900A (en) | 2018-03-08 | 2018-03-08 | A kind of method and system of detection partial discharge of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108414900A true CN108414900A (en) | 2018-08-17 |
Family
ID=63130255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810189078.0A Pending CN108414900A (en) | 2018-03-08 | 2018-03-08 | A kind of method and system of detection partial discharge of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108414900A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387760A (en) * | 2018-12-29 | 2019-02-26 | 云南电网有限责任公司电力科学研究院 | A kind of shelf depreciation quantitative detection system and method based on fiber grating |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101271152A (en) * | 2008-05-06 | 2008-09-24 | 山东电力研究院 | Method and device for verifying insulation online monitoring system of capacitive equipment |
| JP2009097894A (en) * | 2007-10-15 | 2009-05-07 | Fuji Electric Systems Co Ltd | Partial discharge measuring device, method for calibrating the same, and partial discharge measuring method |
| CN102129017A (en) * | 2010-12-30 | 2011-07-20 | 杭州柯林电力设备有限公司 | Case-based intelligent local discharge fault identification system and identification method |
| CN102749564A (en) * | 2012-07-24 | 2012-10-24 | 广州供电局有限公司 | Detection simulation method for local discharge of switch cabinet |
| CN102759692A (en) * | 2012-07-24 | 2012-10-31 | 广州供电局有限公司 | Simulation method for detecting local discharge of switch cabinet based on virtual reality technology |
| CN102955088A (en) * | 2012-11-15 | 2013-03-06 | 云南电力试验研究院（集团）有限公司电力研究院 | Zero resistance insulator detection method on basis of finite element database |
| JP2013253804A (en) * | 2012-06-05 | 2013-12-19 | Synthesize Ltd | Calibrating device |
| CN103645425A (en) * | 2013-11-15 | 2014-03-19 | 广东电网公司电力科学研究院 | High-voltage cable insulation defect partial discharge on-line monitoring diagnosis method |
| CN104049185A (en) * | 2014-05-22 | 2014-09-17 | 西安富邦科技实业有限公司 | Portable partial discharge detecting system and method |
| CN104198899A (en) * | 2014-08-04 | 2014-12-10 | 西安交通大学 | Partial discharge type identifying method for transformer under multi-discharge source situation |
| CN104569745A (en) * | 2013-10-24 | 2015-04-29 | 国家电网公司 | Partial discharge live detection device and method |
| CN105807194A (en) * | 2016-05-09 | 2016-07-27 | 三峡大学 | Fault diagnosis method for converter transformer winding under lightning impulse based on LVQ neural network |
| CN106468753A (en) * | 2015-12-01 | 2017-03-01 | 中国电力科学研究院 | A kind of method of detection partial discharge of transformer |
| CN107368653A (en) * | 2017-07-20 | 2017-11-21 | 云南电网有限责任公司电力科学研究院 | The two dimensional finite element emulation mode and system of a kind of Magnetic Leakage Field of Transformer |
| CN107505541A (en) * | 2017-06-26 | 2017-12-22 | 广西电网有限责任公司电力科学研究院 | A kind of recognition methods of partial discharge of transformer pattern |
-
2018
- 2018-03-08 CN CN201810189078.0A patent/CN108414900A/en active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009097894A (en) * | 2007-10-15 | 2009-05-07 | Fuji Electric Systems Co Ltd | Partial discharge measuring device, method for calibrating the same, and partial discharge measuring method |
| CN101271152A (en) * | 2008-05-06 | 2008-09-24 | 山东电力研究院 | Method and device for verifying insulation online monitoring system of capacitive equipment |
| CN102129017A (en) * | 2010-12-30 | 2011-07-20 | 杭州柯林电力设备有限公司 | Case-based intelligent local discharge fault identification system and identification method |
| JP2013253804A (en) * | 2012-06-05 | 2013-12-19 | Synthesize Ltd | Calibrating device |
| CN102749564A (en) * | 2012-07-24 | 2012-10-24 | 广州供电局有限公司 | Detection simulation method for local discharge of switch cabinet |
| CN102759692A (en) * | 2012-07-24 | 2012-10-31 | 广州供电局有限公司 | Simulation method for detecting local discharge of switch cabinet based on virtual reality technology |
| CN102955088A (en) * | 2012-11-15 | 2013-03-06 | 云南电力试验研究院（集团）有限公司电力研究院 | Zero resistance insulator detection method on basis of finite element database |
| CN104569745A (en) * | 2013-10-24 | 2015-04-29 | 国家电网公司 | Partial discharge live detection device and method |
| CN103645425A (en) * | 2013-11-15 | 2014-03-19 | 广东电网公司电力科学研究院 | High-voltage cable insulation defect partial discharge on-line monitoring diagnosis method |
| CN104049185A (en) * | 2014-05-22 | 2014-09-17 | 西安富邦科技实业有限公司 | Portable partial discharge detecting system and method |
| CN104198899A (en) * | 2014-08-04 | 2014-12-10 | 西安交通大学 | Partial discharge type identifying method for transformer under multi-discharge source situation |
| CN106468753A (en) * | 2015-12-01 | 2017-03-01 | 中国电力科学研究院 | A kind of method of detection partial discharge of transformer |
| CN105807194A (en) * | 2016-05-09 | 2016-07-27 | 三峡大学 | Fault diagnosis method for converter transformer winding under lightning impulse based on LVQ neural network |
| CN107505541A (en) * | 2017-06-26 | 2017-12-22 | 广西电网有限责任公司电力科学研究院 | A kind of recognition methods of partial discharge of transformer pattern |
| CN107368653A (en) * | 2017-07-20 | 2017-11-21 | 云南电网有限责任公司电力科学研究院 | The two dimensional finite element emulation mode and system of a kind of Magnetic Leakage Field of Transformer |
Non-Patent Citations (1)
| Title |
|---|
| 胡斌: "有限元法在变压器局部放电仿真模型参数计算中的应用", 《变压器》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387760A (en) * | 2018-12-29 | 2019-02-26 | 云南电网有限责任公司电力科学研究院 | A kind of shelf depreciation quantitative detection system and method based on fiber grating |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201355384Y (en) | System for detecting and managing partial discharge of switch cabinet on-line | |
| CN102170124B (en) | Early warning method of stable-state index of power quality | |
| CN205665347U (en) | 10kV distribution lines broken string fault detection and positioning system based on three phase voltage electric current | |
| CN114640173A (en) | Early warning model of transformer and generator based on many characteristic quantities | |
| CN103149547B (en) | Transformer substation measurement return circuit on-line monitoring system and state maintenance method | |
| CN106353640A (en) | Fault location method, device and system for distribution lines | |
| CN110703009B (en) | Abnormal analysis and processing method for line loss rate of transformer area | |
| CN106094571B (en) | Multifunctional anti-electricity-theft simulation experiment platform | |
| CN202453451U (en) | Earth grid corrosion and broken point diagnosing system for large and medium-sized substations | |
| CN104374993B (en) | Electricity larceny prevention method and device based on power internet of things and processor | |
| CN102707191A (en) | Diagnosis device and diagnosis method for corrosion of earth screen of large-size transformer substation | |
| CN109831033A (en) | A kind of power supply line's early warning protection equipment and sectional monitoring early warning system | |
| CN110174564A (en) | The filed detection system and its detection method of equipment for monitoring power quality access main website | |
| CN204064351U (en) | A kind of monitoring diagnosis device of power transformer | |
| CN104266679A (en) | Method and device for monitoring and diagnosing power transformer | |
| CN108414900A (en) | A kind of method and system of detection partial discharge of transformer | |
| CN203164360U (en) | Transformer device insulation online monitoring system | |
| CN109586406B (en) | Third-generation intelligent substation analog quantity in-situ module test system and application method thereof | |
| CN203929928U (en) | The anti-isolated island energy of a kind of grid-connected converter force checking device | |
| CN114123486B (en) | Whole network perception intelligent low-voltage distribution area system | |
| CN205720507U (en) | A kind of distribution net work earthing fault monitoring system | |
| CN204925371U (en) | Many analog output's of standard source electric energy quality on -line monitoring device's test system | |
| CN202563018U (en) | Line insulator online monitoring device | |
| CN203350429U (en) | On-line real-time error monitoring system for alternating current sampling measurement apparatus | |
| CN111029914B (en) | Active first-aid repair system based on ubiquitous Internet of things construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180817 |