CN108732472A - Compound field based on high-frequency method couples paper oil insulation partial discharge detecting system - Google Patents
Compound field based on high-frequency method couples paper oil insulation partial discharge detecting system Download PDFInfo
- Publication number
- CN108732472A CN108732472A CN201810387312.0A CN201810387312A CN108732472A CN 108732472 A CN108732472 A CN 108732472A CN 201810387312 A CN201810387312 A CN 201810387312A CN 108732472 A CN108732472 A CN 108732472A
- Authority
- CN
- China
- Prior art keywords
- oil insulation
- partial discharge
- paper oil
- compound field
- voltage
- 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
The present invention discloses a kind of compound field coupling paper oil insulation partial discharge detecting system based on high-frequency method, it is mainly made of four compound field coupling paper oil insulation shelf depreciation device, high-frequency signal receiver, device for signalling and host display device parts, the compound field coupling paper oil insulation shelf depreciation device includes DC power supply, the pulse power, voltage distributor and simulation shelf depreciation device；The DC power supply connects the input terminal of the voltage distributor with the output end of the pulse power, and the output end of the voltage distributor connects the input terminal of the simulation shelf depreciation device；The output end of the simulation shelf depreciation device connects the input terminal of the high-frequency signal receiver；The output end of the device for signalling connects the input terminal of the host display module.The present invention realizes while applying DC voltage and pulse voltage, is capable of the complex working condition of accurate simulation converter transformer valve-side sleeve, and the switching of positive and negative direct current power supply is quick.
Description
Technical field
The invention belongs to paper oil insulation Partial Discharge Detection fields, and in particular to a kind of compound field coupling based on high-frequency method
Close paper oil insulation partial discharge detecting system.
Background technology
The destruction of shelf depreciation is mainly the chemistry generated in heat, the shock of charged particles, electric discharge evolution
Active fragment and shock wave and radiation effects.Since the effect of above-mentioned factor makes damaged surfaces, to change material structure.By
Different destructions can be caused by forming different shelf depreciations in material, and the destruction of shelf depreciation is mainly ion bombardment,
And polyethylene then mainly is caused to crack.The factors such as the destruction of shelf depreciation and electric field strength, electric voltage frequency are also related,
Discharge time and discharge frequency are directly proportional, high-frequency, in addition to leading to dielectric heat, while can shorten the voltage ageing service life of insulation.
The electric field strength that insulation is born is increased, so that discharge time is increased, can equally ager process be made to accelerate.Shelf depreciation can reduce absolutely
Edge performance can result in insulation breakdown sometimes under the long-term serious effect of shelf depreciation.
Develop recently as high voltage direct current transmission project (High Voltage Direct Current, HVDC), direct current
Voltage, pulse voltage and the lower paper oil insulation partial discharge phenomenon analysis of pulse voltage effect become research hotspot.But at this stage,
Both at home and abroad is still within to the experiment of shelf depreciation under compound field voltage and the research of diagnostic techniques the starting stage.
High frequency partial discharge examination method is the common measurement method for power equipment shelf depreciation defects detection and positioning
One of.It is usually 3-30MHz that it, which detects frequency range, has many advantages, such as strong antijamming capability, and detection sensitivity is high, can be used extensive
Detection, positioning and fault type recognition applied to high-tension electricity apparatus local discharge class defect.
Zigbee serial port modules are the 2.4GZigbee wireless serial transparent transmissions based on Zigbee2007/PRO protocol stacks
Communication module.2.4G rf chip CC2530 and high-power low noise radio-frequency front-end of the module based on TI high-performance low-power-consumptions
Chip CC2591 realizes that easily use, all-transparent, high stable, super low-power consumption, overlength distance, ultra-large Zigbee is wirelessly passed
Feel the networking of network.
Invention content
It is an object of the invention to overcome deficiency in the prior art, a kind of compound field coupling based on high-frequency method is proposed
Paper oil insulation partial discharge detecting system, using the Partial Discharge Detecting Technology of High Frequency Current Sensor (HFCT), and compound
Paper oil insulation shelf depreciation defect is diagnosed and is identified under electric field.
The present invention passes through for the Partial Discharge Detection of the converter transformer valve-side sleeve paper oil insulation under compound field
In conjunction with High Frequency Current Sensor and DC pulse superposition voltage device, the paper oil insulation shelf depreciation of operation is carried out highly sensitive
Detection, and carry out signal acquisition and signal processing, result be then sent to host, and then describe oil in terms of shelf depreciation
The partial discharge detecting system of paper insulation deterioration.
The technical issues of present invention is proposed by solution, the technical solution adopted is that：Compound field coupling based on high-frequency method
Paper oil insulation partial discharge detecting system is closed, is mainly connect by compound field coupling paper oil insulation shelf depreciation device, high-frequency signal
Four receiving apparatus, device for signalling and host display device parts are constituted；
The compound field coupling paper oil insulation shelf depreciation device includes DC power supply, the pulse power, voltage distribution dress
Set and simulate shelf depreciation device；
The DC power supply connects the input terminal of the voltage distributor, the electricity with the output end of the pulse power
The output end of pressure distributor connects the input terminal of the simulation shelf depreciation device；
Two for simulating shelf depreciation device and being preheated platform by a constant temperature and being set on the constant temperature preheating platform
A finger pressure type electrode is constituted：One of finger-type electrode is connected with the output end of the voltage distributor, another finger-type electricity
Pole is connected with the earth；
The output end of the simulation shelf depreciation device connects the input terminal of the high-frequency signal receiver；
The high-frequency signal receiver is obtaining high frequency partial discharge signal caused by paper oil insulation, including successively
High Frequency Current Sensor, amplifying circuit, filter circuit, detecting circuit and the Voltage Feedback amplifying circuit of concatenation；The voltage
The output end of feedback amplifier is connected to the input terminal of device for signalling；
The device for signalling is for acquiring Partial Discharge Data and being wirelessly transferred, using microprocessor chip
(Microprogrammed Control Unit, MCU) is used as primary processor, and by serial communication, carries Zigbee and send
The wireless transmission of the complete paired data of module, the Zigbee sending modules output end connection radio frequency (Radio Frequency,
RF) antenna, the serial ports of the Zigbee receiving modules by being wirelessly connected to host；
The output end of the device for signalling connects the input terminal of the host display module；
The host display device obtains the device for signalling and is transmitted through the data come, and carries out shelf depreciation phase spectrum
Scheme (Phase Resolved Partial Discharge, PRPD) and pulse train phase spectrogram (Phase Resolved
Pulse Sequence, PRPS) described point, the results are shown in man-machine interface, and data storage and reading can be carried out.
The preferred static spinning high-voltage source of DC power supply.
The PV102AC of the preferred three prosperous Hua Tai of Wuhan of pulse power model.
The High Frequency Current Sensor uses BNC connector.
The High Frequency Current Sensor uses the inductive type sensors being made of Kenneth Rogoff this lubber ring, signal to be led by one
Line is drawn, and terminal connects BNC heads.
The voltage distributor is made of two high voltage thin film capacitances and two high-tension resistives.
The constant temperature preheats platform built-in MCU program control temperature and configures independent temperature sensing coil probe.
The host display module is using high-performance ARM chips as microprocessor.
The three-stage amplifier that the amplifying circuit is realized using model UA733 and AD8056 chip and OP37 chips.
The filter circuit uses LC filter circuits, the detecting circuit to use SR2100, the Voltage Feedback amplification electricity
Road uses CLC1006.
Advantageous effect
1, the present invention realizes while applying DC voltage and pulse voltage, being capable of accurate simulation converter transformer valve-side sleeve
Complex working condition, and the switching of positive and negative direct current power supply is quick, ensures experiment safety.The output voltage and frequency of the pulse power
It adjusts, assurance function is perfect.
2, the output power of this lubber ring of Kenneth Rogoff is low, and the linearity is good, can more be accurately captured local discharge signal,
Part interference signal can be effectively removed.
3, host analysis is powerful, has data comparison library and analytical model, can consult store historical data, and energy
Enough self-defining picture numbers and date, from two kinds of spectrogram Cooperative Analysis local discharge characteristics of PRPD and PRPS, and carry out pattern
Identification.
4, the present invention has a variety of graphic parameter setting functions, can carry out visualization decrease of noise functions, given threshold and can adopt
Sample interval and supply frequency etc..
5, fully digitalization of the present invention shows that interface is more intuitive, concise, and human-computer interaction is friendly.
6, compared with existing detection technique and detection device, the present invention being capable of accurate simulation converter transformer valve-side sleeve use
Paper oil insulation generated local discharge signal under actual condition, detection is accurate, is convenient for staff's operation setting and diagnosis,
Advantage is had more using the detecting system based on high-frequency method, can realize accurate signal capture, by the way that collection result is passed through nothing
Line is transmitted to data analysis unit, ensures that safe operation is reliable.
Description of the drawings
Fig. 1 is voltage distributor circuit interconnect pattern；
Fig. 2 is system structure installation drawing；
Fig. 3 is high-frequency signal receiver；
Fig. 4 is High Frequency Current Sensor (HFCT) appearance
Fig. 5 is host interface.
Specific implementation mode
In the following with reference to the drawings and specific embodiments, the compound field coupling oil based on high-frequency method further illustrated the present invention
How paper insulation partial discharge detecting system is realized.
The present invention couples the combination of shelf depreciation device by High Frequency Current Sensor and compound field, to paper oil insulation office
Portion's electric discharge is detected, from part of the aspect description paper oil insulation of PRPD and PRPS spectrograms two under compound field coupling
Discharge characteristic studies the dielectric properties of converter transformer valve-side sleeve interior insulation.The purpose of the present invention can pass through following measures
To reach：A kind of compound field coupling paper oil insulation partial discharge detecting system based on high-frequency method is provided, i.e., it is a kind of based on height
Frequency current sensor and compound field coupling shelf depreciation device realize the shelf depreciation dynamic of paper oil insulation and highly sensitive inspection
It surveys.
As shown in Fig. 2, the present invention is based on the compound fields of High Frequency Current Sensor to couple paper oil insulation Partial Discharge Detection
System complicates the local discharge characteristic research of paper oil insulation under operating mode for studying the change of current.The present invention is mainly by compound field
Couple four paper oil insulation shelf depreciation device, high-frequency signal receiver, device for signalling, host display device part structures
At：
Wherein, compound field coupling paper oil insulation shelf depreciation device includes DC power supply, the pulse power, voltage distribution dress
Set and simulate shelf depreciation device；DC power supply described in the present embodiment by the gentle and quiet Electrospun high voltage power supply in positive polarity east and
One gentle and quiet Electrospun high voltage power supply in negative polarity east is constituted, and model DW-P503-1ACDF, inside is set using modularized circuit
Meter, the output precision of voltage regulation is high, and output voltage is continuously adjustable, and is shown with high-precision output voltage and current digital.
The DC power supply connects the input terminal of the voltage distributor, the electricity with the output end of the pulse power
The output end of distributor is pressed to connect the input terminal of the simulation shelf depreciation device by current-limiting resistance.
The PV102AC of three prosperous Hua Tai of the Wuhan of pulse power model described in the present embodiment, the surge voltage of pulse voltage
Amplitude is 0 adjustable to ± 100kV, and the rising edge and failing edge of surge voltage are 1 to 1000 μ s.
The surge voltage of generation is laminated on DC power supply.
The voltage distributor is the noninductive absorbing membrane capacitor C of a polypropylene high pressure1With a clovershrub high pressure
Glass glaze high frequency is noninductive discharge resistance R1The low-pass filter circuit built and the noninductive absorption of one polypropylene high pressure of composition are thin
Membrane capacitance C2With a noninductive discharge resistance R of clovershrub high-pressure glass glaze high frequency2The block isolating circuit being connected in series.Described poly- third
The model EACO-SDD of alkene high pressure is noninductive absorbing membrane capacitor, the noninductive discharge resistance of the clovershrub high-pressure glass glaze high frequency
Model RI80, the voltage distributor circuit connection is as shown in Figure 1.
The simulation shelf depreciation device is model HB-HP-6040 Chinese nation's heated at constant temperature platform and is set to institute
The two finger pressure type electrodes stated on heated at constant temperature platform are constituted, and heating platform is heated up using resistance wire fever, may be implemented
It is rapidly heated；Platform built-in MCU program control temperature simultaneously configures independent temperature sensing coil probe, and every difference of panel is less than ± 2 DEG C, it is ensured that sample
Uniform constant temperature is heated, and the number display equipped with actual temperature and set temperature；One of finger-type electrode is filled with voltage distribution
The output end set is connected, another finger-type electrode is connected with the earth.Described in the output end connection of the simulation shelf depreciation device
The input terminal of high-frequency signal receiver.
High-frequency signal receiver is as shown in figure 3, to obtain high frequency partial discharge signal, including the high frequency that is sequentially connected in series
Current sensor HFCT, amplifying circuit, filter circuit, detecting circuit and Voltage Feedback amplifying circuit, the Voltage Feedback
The output end of amplifying circuit is connected to device for signalling；The amplifying circuit using model UA733 and AD8056 chip and
The three-stage amplifier that OP37 chips are realized；The filter circuit uses LC filter circuits；The detecting circuit uses SR2100；
The Voltage Feedback amplifying circuit uses CLC1006；The High Frequency Current Sensor, using what is be made of Kenneth Rogoff this lubber ring
Inductive type sensors, signal are drawn by a conducting wire, connect BNC heads by high frequency coaxial line, outer cover packaging is used in combination, to avoid
External disturbance, as shown in Figure 4.
When shelf depreciation occurs for paper oil insulation, the pulse current that the duration is only ns grades, the electricity inspired will produce
Magnetic wave can penetrate epoxy material pouring layer, be coupled into voltage signal by High Frequency Current Sensor, while being sent to amplification
Filter circuit, needs to be amplified circuit and is amplified herein, then needs to filter out interference noise, such as Hz noise etc. outer
Sector signal carries out detection after signal is filtered.
Device for signalling passes through wireless transmission mould for effectively being acquired to local discharge pulse signal, and by it
Formula is sent to subsequent cell；Using high-performance STM32 series A RM chips as microprocessor (MCU)；Specific method is to utilize height
The included A/D conversion modules of performance ARM chips, are converted to digital signal by the previous stage analog signal received, pass through simultaneously
UART serial communications are connected with transmission unit sending module, collected signal are encoded, by being wirelessly transmitted to master
Machine.The transmission unit realizes wireless transmission communication using ZAuZx_T series Zigbee serial ports transparent transmission modules by RF antennas.
Host display device is used to analyze Partial Discharge Data and carry out the described point of PRPD and PRPS, and right
The shelf depreciation state of paper oil insulation judges, and the result of analysis is stored and inquired.Made using high-performance ARM chips
For microprocessor (MCU)；Specific method is to utilize STM32 series high-performance ARM chips, will by included A/D conversion modules
The previous stage analog signal received is converted to digital signal, and the amplitude of the docking collection of letters number measures and calculates shelf depreciation
Signal pulse number judges electric power using the size of measured partial discharge pulse's signal value and pulse number as foundation
The power of cable local discharge, carries out the described point of PRPD and PRPS spectrograms with this, unit dB, as shown in Figure 5.
Power supply is powered using outside lithium battery, easy to disassemble to charge.
The compound field based on high-frequency method of the present invention couples paper oil insulation partial discharge detecting system, specifically uses ring
Border and its method are as follows：
1, use environment
Height above sea level：≤1000m
Operating temperature：-20℃-40℃
Working relative humidity：0-90%, no condensation
Without fire, explosion danger, pollution severity chemical attack, high vibration, strong electromagnetic and lightning stroke place are tested and set
It is standby to want good earth
2, application method
(1) cellulose insulation sample making step
1. the cellulose insulation paper produced using Li Co., Ltd in the Southern Tang Dynasty in this example, thickness 0.13mm, by fiber
Plain insulating paper is cut into the square sample of 20mm*50mm, and sample is put into model 401B type heat aging test chambers and is carried out
Dry, temperature setting is 90 DEG C, and drying time is set as 12 hours.
2. carrying out vacuum oil filtering processing using Great Wall 25# transformer oil.
3. by treated, cellulose insulation paper is put into insulating oil, and dry in the vacuum of model DZF-6020/6050
48 hours are stood in dry case, the mass ratio for controlling insulating paper and insulating oil is less than 1：20, environment temperature is set as 40 DEG C, vacuum degree
It is set as 50Pa.
4. taking out immersion oil treated oil-immersed insulating paper carries out subsequent experimental procedure.
(2) Partial Discharge Detection step
1. two finger-type electrodes are placed on heated at constant temperature platform and are fixed relatively, distance is set as between electrode
15mm puts oil-paper sample between the electrodes, and ensures that electrode seal is fitted on sample, and heating platform temperature is set in 40
℃。
2. setting the voltage magnitude of the high-voltage DC power supply as 10kV, the pulse repetition frequency is set as 250Hz, is incited somebody to action
High Frequency Current Sensor is sleeved on oil-immersed insulating paper, so that oil-immersed insulating paper is located at sensor center, is shown by host setting
Pulse electricity number is 1000, triggering level 1dB.
3. the voltage magnitude that increase pulses power supply generates, when shelf depreciation occurs for paper oil insulation, High Frequency Current Sensor
It couples from sample and transfers out the transverse electromagnetic wave signal come, by detecting circuit into obtaining can be with after amplification is filtered
It send to effective acquisition pulse signal of ARM, after A/D digital-to-analogue conversions, reaches Zigbee module through UART serial ports, pass through RF days
Line wireless transmission is sent to host display device；Host also provides man-machine interface and data storage and query function simultaneously, and in real time
Export PRPD and PRPS spectrograms.
Claims (10)
1. the compound field based on high-frequency method couples paper oil insulation partial discharge detecting system, which is characterized in that mainly by compound
Field coupling paper oil insulation shelf depreciation device, high-frequency signal receiver, device for signalling and host display device four
Part is constituted；
Compound field coupling paper oil insulation shelf depreciation device include DC power supply, the pulse power, voltage distributor and
Simulate shelf depreciation device；
The DC power supply connects the input terminal of the voltage distributor, the voltage point with the output end of the pulse power
Output end with device connects the input terminal of the simulation shelf depreciation device；
Two fingers that the simulation shelf depreciation device is preheated platform by a constant temperature and is set on the constant temperature preheating platform
Die mould electrode is constituted：One of finger-type electrode is connected with the output end of the voltage distributor, another finger-type electrode with
The earth is connected；
The output end of the simulation shelf depreciation device connects the input terminal of the high-frequency signal receiver；
The high-frequency signal receiver is obtaining high frequency partial discharge signal caused by paper oil insulation, including is sequentially connected in series
High Frequency Current Sensor, amplifying circuit, filter circuit, detecting circuit and Voltage Feedback amplifying circuit；The Voltage Feedback
The output end of amplifying circuit is connected to the input terminal of device for signalling；
The device for signalling is for acquiring Partial Discharge Data and being wirelessly transferred, using microprocessor chip as master
Processor, and by serial communication, the wireless transmission of the complete paired data of Zigbee sending modules is carried, the Zigbee sends mould
The output end of block connects radio-frequency antenna, the serial ports of the Zigbee receiving modules by being wirelessly connected to host；
The output end of the device for signalling connects the input terminal of the host display module；
The host display device obtain the device for signalling be transmitted through come data, and carry out shelf depreciation phase spectrogram and
The described point of pulse train phase spectrogram the results are shown in man-machine interface, and can carry out data storage and reading.
2. the compound field according to claim 1 based on high-frequency method couples paper oil insulation partial discharge detecting system,
It is characterized in that, the preferred static spinning high-voltage source of DC power supply.
3. the compound field according to claim 1 based on high-frequency method couples paper oil insulation partial discharge detecting system,
It is characterized in that, the PV102AC of the preferred three prosperous Hua Tai of Wuhan of pulse power model.
4. the compound field according to claim 1 based on high-frequency method couples paper oil insulation partial discharge detecting system,
It is characterized in that, the High Frequency Current Sensor uses BNC connector.
5. the compound field according to claim 1 based on high-frequency method couples paper oil insulation partial discharge detecting system,
It is characterized in that, the High Frequency Current Sensor uses the inductive type sensors being made of Kenneth Rogoff this lubber ring, and signal is by one
Conducting wire is drawn, and terminal connects BNC heads.
6. the compound field according to claim 1 based on high-frequency method couples paper oil insulation partial discharge detecting system,
It is characterized in that, the voltage distributor is made of two high voltage thin film capacitances and two high-tension resistives.
7. the compound field according to claim 1 based on high-frequency method couples paper oil insulation partial discharge detecting system,
It is characterized in that, the constant temperature preheats platform built-in MCU program control temperature and configures independent temperature sensing coil probe.
8. the compound field according to claim 1 based on high-frequency method couples paper oil insulation partial discharge detecting system,
It is characterized in that, the host display module is using high-performance ARM chips as microprocessor.
9. the compound field according to claim 1 based on high-frequency method couples paper oil insulation partial discharge detecting system,
It is characterized in that, the three-stage amplifier that the amplifying circuit is realized using model UA733 and AD8056 chip and OP37 chips.
10. the compound field according to claim 1 based on high-frequency method couples paper oil insulation partial discharge detecting system,
It is characterized in that, the filter circuit uses LC filter circuits, the detecting circuit to use SR2100, the Voltage Feedback amplification electricity
Road uses CLC1006.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810387312.0A CN108732472A (en) | 2018-04-26 | 2018-04-26 | Compound field based on high-frequency method couples paper oil insulation partial discharge detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810387312.0A CN108732472A (en) | 2018-04-26 | 2018-04-26 | Compound field based on high-frequency method couples paper oil insulation partial discharge detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108732472A true CN108732472A (en) | 2018-11-02 |
Family
ID=63939308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810387312.0A Pending CN108732472A (en) | 2018-04-26 | 2018-04-26 | Compound field based on high-frequency method couples paper oil insulation partial discharge detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108732472A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507549A (en) * | 2018-11-16 | 2019-03-22 | 天津大学 | Partial discharge of switchgear based on wireless network monitors system |
| CN109581171A (en) * | 2018-12-30 | 2019-04-05 | 天津大学 | High-frequency current method compound field intermediate joint of electric cable partial discharge detecting system |
| CN109946575A (en) * | 2019-03-20 | 2019-06-28 | 天津大学 | Based on the intermediate joint of electric cable partial discharge detecting system under compound field |
| CN113325276A (en) * | 2021-04-23 | 2021-08-31 | 中国电力科学研究院有限公司 | GIS epoxy insulation surface defect partial discharge detection method and device |
| CN114793057A (en) * | 2022-05-07 | 2022-07-26 | 中国科学院电工研究所 | Voltage superposition circuit for dielectric discharge and experimental method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201522543U (en) * | 2009-11-02 | 2010-07-07 | 华北电力大学 | Transformer winding turn-to-turn partial discharge joint detection and diagnostic platform |
| CN202929161U (en) * | 2012-11-10 | 2013-05-08 | 广西电网公司电力科学研究院 | Transformer ultrahigh frequency partial discharge positioning test apparatus |
| CN203249989U (en) * | 2013-03-14 | 2013-10-23 | 辽宁省电力有限公司鞍山供电公司 | Transformer partial discharge on-line monitoring system |
| CN103543391A (en) * | 2013-09-29 | 2014-01-29 | 广西电网公司电力科学研究院 | Direct current partial discharge source detecting and recognizing device |
| CN106326918A (en) * | 2016-08-12 | 2017-01-11 | 国网山东省电力公司滨州供电公司 | Multiscale energy feature linear recognition method for partial discharge ultrahigh frequency signal of transformer |
| CN106771933A (en) * | 2017-01-23 | 2017-05-31 | 天津大学 | Power cable shelf depreciation high frequency electric monitoring system based on wireless network |
-
2018
- 2018-04-26 CN CN201810387312.0A patent/CN108732472A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201522543U (en) * | 2009-11-02 | 2010-07-07 | 华北电力大学 | Transformer winding turn-to-turn partial discharge joint detection and diagnostic platform |
| CN202929161U (en) * | 2012-11-10 | 2013-05-08 | 广西电网公司电力科学研究院 | Transformer ultrahigh frequency partial discharge positioning test apparatus |
| CN203249989U (en) * | 2013-03-14 | 2013-10-23 | 辽宁省电力有限公司鞍山供电公司 | Transformer partial discharge on-line monitoring system |
| CN103543391A (en) * | 2013-09-29 | 2014-01-29 | 广西电网公司电力科学研究院 | Direct current partial discharge source detecting and recognizing device |
| CN106326918A (en) * | 2016-08-12 | 2017-01-11 | 国网山东省电力公司滨州供电公司 | Multiscale energy feature linear recognition method for partial discharge ultrahigh frequency signal of transformer |
| CN106771933A (en) * | 2017-01-23 | 2017-05-31 | 天津大学 | Power cable shelf depreciation high frequency electric monitoring system based on wireless network |
Non-Patent Citations (1)
| Title |
|---|
| 王鹏: "换流变压器局部放电超高频传播特性及监测传感器研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507549A (en) * | 2018-11-16 | 2019-03-22 | 天津大学 | Partial discharge of switchgear based on wireless network monitors system |
| CN109581171A (en) * | 2018-12-30 | 2019-04-05 | 天津大学 | High-frequency current method compound field intermediate joint of electric cable partial discharge detecting system |
| CN109946575A (en) * | 2019-03-20 | 2019-06-28 | 天津大学 | Based on the intermediate joint of electric cable partial discharge detecting system under compound field |
| CN113325276A (en) * | 2021-04-23 | 2021-08-31 | 中国电力科学研究院有限公司 | GIS epoxy insulation surface defect partial discharge detection method and device |
| CN114793057A (en) * | 2022-05-07 | 2022-07-26 | 中国科学院电工研究所 | Voltage superposition circuit for dielectric discharge and experimental method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108732472A (en) | Compound field based on high-frequency method couples paper oil insulation partial discharge detecting system | |
| CN108732471A (en) | Multiple physical field based on superfrequency method couples paper oil insulation partial discharge detecting system | |
| CN108680836A (en) | Multiple physical field based on high-frequency method couples paper oil insulation partial discharge detecting system | |
| CN102156218B (en) | Device and method for measuring voltage of noncontact charge induced high-voltage transmission line | |
| CN107831413B (en) | The electromagnetic wave detection device and method of transmission line of electricity corona discharge based on unmanned plane | |
| CN203811754U (en) | An enclosed type gas insulation combined electric appliance partial discharge detection device | |
| CN108693451A (en) | Compound field based on superfrequency method couples paper oil insulation partial discharge detecting system | |
| CN205404682U (en) | Wireless phase synchronization device | |
| CN103852697B (en) | Cable partial discharge detection device | |
| CN101907659A (en) | Temperature controllable PEA space charge test device | |
| CN102129763A (en) | CVT (Capacitor Voltage Transformer) online monitoring system | |
| CN109581171A (en) | High-frequency current method compound field intermediate joint of electric cable partial discharge detecting system | |
| CN109444691A (en) | Multiple physical field based on ultrasonic method couples silicon rubber partial discharge detecting system | |
| CN103487679B (en) | A kind of AIS electric mutual inductor test macro and method thereof | |
| CN208076658U (en) | Multiple physical field based on superfrequency method couples paper oil insulation partial discharge detecting system | |
| CN208076659U (en) | Compound field based on high-frequency method couples paper oil insulation partial discharge detecting system | |
| CN204101640U (en) | Contactless CVT dielectric loss measurement system | |
| CN105866644A (en) | System for automatically collecting transformer oil paper insulation return voltage and testing method | |
| CN203117320U (en) | A high-voltage capacitor testing device | |
| CN102141586A (en) | Power equipment online monitor method and device | |
| CN208092189U (en) | Compound field based on superfrequency method couples paper oil insulation partial discharge detecting system | |
| CN215599301U (en) | Integrated sensor | |
| CN204964656U (en) | Portable insulator intellectual detection system appearance | |
| CN104280711A (en) | Device and method for calibrating break time of insulating oil dielectric strength tester | |
| CN110736904A (en) | oiled paper insulation partial discharge monitoring device |
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: 20181102 |