CN102353846A - Measuring method for online monitoring of corona loss of power transmission line - Google Patents
Measuring method for online monitoring of corona loss of power transmission line Download PDFInfo
- Publication number
- CN102353846A CN102353846A CN2011101629163A CN201110162916A CN102353846A CN 102353846 A CN102353846 A CN 102353846A CN 2011101629163 A CN2011101629163 A CN 2011101629163A CN 201110162916 A CN201110162916 A CN 201110162916A CN 102353846 A CN102353846 A CN 102353846A
- Authority
- CN
- China
- Prior art keywords
- voltage
- electricity
- measuring method
- transmission
- line
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000012544 monitoring process Methods 0.000 title claims abstract description 19
- 238000005070 sampling Methods 0.000 claims abstract description 18
- 239000010408 film Substances 0.000 claims abstract description 17
- 239000011104 metalized film Substances 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims abstract description 13
- 239000013307 optical fiber Substances 0.000 claims abstract description 4
- 230000005611 electricity Effects 0.000 claims description 34
- 239000011810 insulating material Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract 1
- 241001354243 Corona Species 0.000 description 32
- 238000005259 measurement Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Images
Landscapes
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a measuring method for online monitoring of corona loss of a power transmission line. The method comprises the following steps of: wrapping a layer of thin metallized film with a certain length on the surface of a power transmission lead, wherein a conductive metal layer is arranged on one outward surface of the wrapped film and an insulated material layer is arranged on one surface of the wrapped film close to the power transmission lead; connecting a sampling resistor between the metal film layer and a power transmission divided conductor in parallel; converting the flowing leakage current into a voltage signal by the sampling resistor; transmitting the voltage signal to a computer on the ground through a wireless mode or an optical fiber; converting the voltage of the power transmission lead is converted through a voltage transformer or a voltage divider and transmitting the converted voltage to the computer; and calculating corona current, loss and other data by computer software. The measuring method disclosed by the invention is suitable for a non-load line and a load line or an alternating current line and a direct current line.
Description
Technical field:
The invention belongs to high voltage installation and experimental technique field, relate to a kind of method of using the metallization embrane method to measure the corona loss of AC and DC transmission line of electricity, especially a kind of metallization embrane method that is used for AC and DC transmission line of electricity corona loss on-line monitoring.
Background technology:
For many years, people use high-tension bridge (like Schering bridge) to measure the loss characteristic on insulation system inside and the transmission line of electricity always.Bridge diagram can be measured the loss value under extremely low power factor.But, when the measurement of the line segment that makes an experiment, need reversal connection, electric bridge to be in the noble potential district.There is certain potential safety hazard in this measuring method inconvenient operation to the person and equipment, is difficult to implement for a long time the real-time online under the different weather conditions to be detected.
In addition, there are some kinds of power meter circuit to can be used to measure the typical low power factor corona loss on the existing UHV (ultra-high voltage) test circuit, in the research of 500 KV coronas, adopted this method abroad.
In addition, the corona cage method also is one of common method of measuring corona loss, studies the coupled antenna method in addition in addition and measures the transmission line of electricity corona loss.
Domestic technical requirement of measuring according to corona loss has the special-purpose system controlled by computer corona loss measuring instrument of development.
But for above-mentioned measuring method, they otherwise can only off-line measurement, or can only unloadedly measure.The measurement of power when very serious for wave form distortion under the low-power factor; Be adopt bridge method, or the method for low power-factor wattmeter all do not consider influence of harmonic; Therefore can produce significant error; Adopt the low power-factor wattmeter of electromagnetic principle or measure corona loss, realize relatively difficulty of automatic record and data processing with the electric bridge equilibrium principle.
Up to the present, the corona loss of UHV TRANSMISSION LINES IN CHINA is measured and not carried out basically, and the correlation computations of extra-high voltage corona loss is basic with reference to external related data, and this type can be with reference to measured data seldom, and is very incomplete.And the meteorological condition that the time of this type extra-high voltage corona loss test duration lacks both at home and abroad, test is experienced is also not thorough, cause test figure very incomplete, need further carry out long test and measurement research.
Summary of the invention:
The technical matters that the present invention solves is: a kind of measuring method of transmission line of electricity corona loss on-line monitoring is provided, has been applicable to unloaded and the measurement of loaded line corona loss, also be applicable to the loss measurement of AC and DC line corona.
The objective of the invention is to overcome the shortcoming of above-mentioned prior art; A kind of measuring method of transmission line of electricity corona loss on-line monitoring is provided; At transmission of electricity split conductor coated outside layer of metal film, metalized film is made up of the insulation course and the outer field conductive layer of internal layer; Parallelly connected sampling resistor between said metalized film and transmission of electricity split conductor, the leakage current that sampling resistor will flow through on it converts voltage signal into, and this voltage signal transfers to computing machine; The voltage of transmission of electricity split conductor also transfers to computing machine after voltage transformer (VT) or voltage divider conversion; COMPUTER CALCULATION corona current and corona loss data and on-line monitoring transmission line of electricity corona loss.
The leakage current that said sampling resistor will flow through converts voltage signal into, and this signal is through wireless or Optical Fiber Transmission to ground computing machine.
Coated metal film on the said transmission pressure to be measured.
Said metalized film one side outwardly is the coat of metal of conduction, is insulating material film towards the one side of transmission pressure.
Said metalized film length is 0.1 meter-200 meters, 1 micron-5 millimeters of insulating material film thickness.
Said sampling resistor is electrically connected between the metal coating of transmission pressure and parcel.
Said sampling resistor value is 1 micro-ohm-10 megaohm.
The phase voltage of said transmission line of electricity is recorded by resitstance voltage divider, capacitive divider, RC divider, electromagnetic potential transformer or capacitance type potential transformer.
Described phase voltage records with the high-voltage arm or the low-voltage arm of resitstance voltage divider, capacitive divider or RC divider.
The present invention is applicable to unloaded and the loaded line corona loss is measured, and also is applicable to the loss measurement of AC and DC line corona.
Description of drawings:
Fig. 1 is the conductor structure synoptic diagram of metalized film parcel of the present invention;
Fig. 2 is electronegative potential corona loss measurement structure figure of the present invention;
Fig. 3 is noble potential corona loss measurement structure figure of the present invention.
Wherein: 1 is the transmission of electricity split conductor; 2 is insulation course; 3 is conductive layer; 4 is the metalized film that wraps up on the lead; R
1Be sampling resistor; T is a high-tension transformer; R
2Be high-tension resistive; C
1Be high-voltage capacitance; R
3Be low resistance; C
2Be low-voltage capacitance; D is a silicon stack; K is a switch.
Embodiment:
Below in conjunction with accompanying drawing the present invention is done and to describe in further detail:
Referring to Fig. 1-3, the conductor structure synoptic diagram of metalized film parcel as shown in Figure 1.A kind of measuring method of transmission line of electricity corona loss on-line monitoring, at transmission of electricity split conductor coated outside layer of metal film, metalized film is made up of the insulation course and the outer field conductive layer of internal layer; Parallelly connected sampling resistor between said metalized film and transmission of electricity split conductor, the leakage current that sampling resistor will flow through on it converts voltage signal into, and this voltage signal transfers to computing machine; The voltage of transmission of electricity split conductor also transfers to computing machine after voltage transformer (VT) or voltage divider conversion; COMPUTER CALCULATION corona current and corona loss data and on-line monitoring transmission line of electricity corona loss.
The parcel layer of metal film on the transmission line of electricity surface, the insulation course of metalized film is attached on the transmission pressure, and conductive layer is outwardly.
Coated metal film on the said transmission pressure to be measured.Said metalized film one side outwardly is the coat of metal of conduction, is insulating material film towards the one side of transmission pressure.
Said metalized film length is 0.1 meter-200 meters, 1 micron-5 millimeters of insulating material film thickness.Said sampling resistor is electrically connected between the metal coating of transmission pressure and parcel.Said sampling resistor value is 1 micro-ohm-10 megaohm.The phase voltage of said transmission line of electricity is recorded by resitstance voltage divider, capacitive divider, RC divider, electromagnetic potential transformer or capacitance type potential transformer.Described phase voltage records with the high-voltage arm or the low-voltage arm of resitstance voltage divider, capacitive divider or RC divider.
Fig. 2 and Fig. 3 are corona loss measuring method synoptic diagram.The method both can have been measured the transmission line of alternation current also can measure DC power transmission line; The circuit phase voltage can be recorded by the high-voltage arm or the low-voltage arm of RC divider; The voltage signal that measures reaches computing machine through wireless or optical fiber; The corona leakage current is then recorded by film place sampling resistor, behind measuring voltage and electric current, utilizes computed in software to go out corona loss.
Above content is to combine concrete preferred implementation to further explain that the present invention did; Can not assert that the specific embodiment of the present invention only limits to this; Those of ordinary skill for technical field under the present invention; Under the prerequisite that does not break away from the present invention's design; Can also make some simple deduction or replace, all should be considered as belonging to the present invention and confirm scope of patent protection by claims of being submitted to.
Claims (9)
1. the measuring method of a transmission line of electricity corona loss on-line monitoring is characterized in that: at transmission of electricity split conductor coated outside layer of metal film, metalized film is made up of the insulation course and the outer field conductive layer of internal layer; Parallelly connected sampling resistor between said metalized film and transmission of electricity split conductor, the leakage current that sampling resistor will flow through on it converts voltage signal into, and this voltage signal transfers to computing machine; The voltage of transmission of electricity split conductor also transfers to computing machine after voltage transformer (VT) or voltage divider conversion; COMPUTER CALCULATION corona current and corona loss data and on-line monitoring transmission line of electricity corona loss.
2. the measuring method of transmission line of electricity corona loss on-line monitoring according to claim 1, it is characterized in that: the leakage current that said sampling resistor will flow through converts voltage signal into, and this signal is through wireless or Optical Fiber Transmission to ground computing machine.
3. the measuring method of transmission line of electricity corona loss on-line monitoring according to claim 1 is characterized in that: coated metal film on the said transmission pressure to be measured.
4. the measuring method of transmission line of electricity corona loss on-line monitoring according to claim 1, it is characterized in that: said metalized film one side outwardly is the coat of metal of conduction, is insulating material film towards the one side of transmission pressure.
5. the measuring method of transmission line of electricity corona loss on-line monitoring according to claim 1, it is characterized in that: said metalized film length is 0.1 meter 200 meters, 1 micron-5 millimeters of insulating material film thickness.
6. the measuring method of transmission line of electricity corona loss on-line monitoring according to claim 1, it is characterized in that: said sampling resistor is electrically connected between the metal coating of transmission pressure and parcel.
7. the measuring method of transmission line of electricity corona loss on-line monitoring according to claim 1, it is characterized in that: said sampling resistor value is 1 micro-ohm-10 megaohm.
8. the measuring method of transmission line of electricity corona loss on-line monitoring according to claim 1, it is characterized in that: the phase voltage of said transmission line of electricity is recorded by resitstance voltage divider, capacitive divider, RC divider, electromagnetic potential transformer or capacitance type potential transformer.
9. like the measuring method of transmission line of electricity corona loss on-line monitoring as described in the right 8, it is characterized in that:
Described phase voltage records with the high-voltage arm or the low-voltage arm of resitstance voltage divider, capacitive divider or RC divider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110162916 CN102353846B (en) | 2011-06-17 | 2011-06-17 | Measuring method for online monitoring of corona loss of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110162916 CN102353846B (en) | 2011-06-17 | 2011-06-17 | Measuring method for online monitoring of corona loss of power transmission line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102353846A true CN102353846A (en) | 2012-02-15 |
| CN102353846B CN102353846B (en) | 2013-07-10 |
Family
ID=45577446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110162916 Active CN102353846B (en) | 2011-06-17 | 2011-06-17 | Measuring method for online monitoring of corona loss of power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102353846B (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048548A (en) * | 2012-12-12 | 2013-04-17 | 中国电力科学研究院 | Corona loss testing system and method of molded wire |
| CN105116233A (en) * | 2015-08-18 | 2015-12-02 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for predicting loss of DC system |
| CN106353577A (en) * | 2016-08-19 | 2017-01-25 | 中国电力科学研究院 | System and method for measuring direct voltage based on wireless transmission |
| CN106443206A (en) * | 2016-10-24 | 2017-02-22 | 广州供电局有限公司 | Measurement method and measurement device of electric field intensity at high-voltage wire surface |
| CN110376476A (en) * | 2019-07-25 | 2019-10-25 | 云南电网有限责任公司电力科学研究院 | A kind of dynamic monitoring and positioning system and the method for leaking electricity of Passive self-starting based on wisdom conducting wire |
| CN111562426A (en) * | 2020-05-18 | 2020-08-21 | 厦门合立道工程设计集团股份有限公司 | Quick judgment method for safe voltage drop of building electric direct current line conductor |
| CN113945765A (en) * | 2021-11-02 | 2022-01-18 | 国网福建省电力有限公司检修分公司 | Corona loss evaluation method for extra-high voltage alternating current transmission line |
| CN115616302A (en) * | 2022-09-27 | 2023-01-17 | 国网江苏省电力有限公司南通供电分公司 | Method and device for accumulating and detecting charge potential of insulating layer of direct current lead |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01191071A (en) * | 1988-01-27 | 1989-08-01 | Toshiba Corp | Monitoring method for rotary electric machine |
| CN1049229A (en) * | 1989-07-31 | 1991-02-13 | 三井石油化学工业株式会社 | Apparatus for monitoring degradation of insulation of electrical installation |
| JPH03162683A (en) * | 1989-11-20 | 1991-07-12 | Sumitomo Electric Ind Ltd | Method for diagnosing deterioration of electric power cable |
| CN1131278A (en) * | 1994-10-04 | 1996-09-18 | Abb管理有限公司 | Local discharge pulse sensor for coupled high voltage alive equipment |
-
2011
- 2011-06-17 CN CN 201110162916 patent/CN102353846B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01191071A (en) * | 1988-01-27 | 1989-08-01 | Toshiba Corp | Monitoring method for rotary electric machine |
| CN1049229A (en) * | 1989-07-31 | 1991-02-13 | 三井石油化学工业株式会社 | Apparatus for monitoring degradation of insulation of electrical installation |
| JPH03162683A (en) * | 1989-11-20 | 1991-07-12 | Sumitomo Electric Ind Ltd | Method for diagnosing deterioration of electric power cable |
| CN1131278A (en) * | 1994-10-04 | 1996-09-18 | Abb管理有限公司 | Local discharge pulse sensor for coupled high voltage alive equipment |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103048548B (en) * | 2012-12-12 | 2015-05-20 | 中国电力科学研究院 | Corona loss testing system and method of molded wire |
| CN103048548A (en) * | 2012-12-12 | 2013-04-17 | 中国电力科学研究院 | Corona loss testing system and method of molded wire |
| CN105116233A (en) * | 2015-08-18 | 2015-12-02 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Method for predicting loss of DC system |
| CN105116233B (en) * | 2015-08-18 | 2018-01-16 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Forecasting Methodology is lost in a kind of straight-flow system |
| CN106353577A (en) * | 2016-08-19 | 2017-01-25 | 中国电力科学研究院 | System and method for measuring direct voltage based on wireless transmission |
| CN106353577B (en) * | 2016-08-19 | 2020-04-17 | 中国电力科学研究院 | Direct-current voltage measuring system and method based on wireless transmission |
| CN106443206B (en) * | 2016-10-24 | 2023-10-20 | 广州供电局有限公司 | Method and device for measuring electric field intensity on surface of high-voltage wire |
| CN106443206A (en) * | 2016-10-24 | 2017-02-22 | 广州供电局有限公司 | Measurement method and measurement device of electric field intensity at high-voltage wire surface |
| CN110376476A (en) * | 2019-07-25 | 2019-10-25 | 云南电网有限责任公司电力科学研究院 | A kind of dynamic monitoring and positioning system and the method for leaking electricity of Passive self-starting based on wisdom conducting wire |
| CN111562426A (en) * | 2020-05-18 | 2020-08-21 | 厦门合立道工程设计集团股份有限公司 | Quick judgment method for safe voltage drop of building electric direct current line conductor |
| CN113945765A (en) * | 2021-11-02 | 2022-01-18 | 国网福建省电力有限公司检修分公司 | Corona loss evaluation method for extra-high voltage alternating current transmission line |
| CN113945765B (en) * | 2021-11-02 | 2023-09-19 | 国网福建省电力有限公司检修分公司 | Corona loss assessment method for extra-high voltage alternating current transmission line |
| CN115616302A (en) * | 2022-09-27 | 2023-01-17 | 国网江苏省电力有限公司南通供电分公司 | Method and device for accumulating and detecting charge potential of insulating layer of direct current lead |
| CN115616302B (en) * | 2022-09-27 | 2024-02-13 | 国网江苏省电力有限公司南通供电分公司 | Method and device for collecting and detecting charge and potential of insulating layer of direct-current lead |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102353846B (en) | 2013-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102353846B (en) | Measuring method for online monitoring of corona loss of power transmission line | |
| Amin et al. | Monitoring of leakage current for composite insulators and electrical devices | |
| WO2015117304A1 (en) | System for online monitoring of zinc oxide arrester and method thereof | |
| CN106093593B (en) | Condenser type electric power equipment dielectric loss online test method and system | |
| CN104749498A (en) | Portable partial discharge detecting and diagnosing device | |
| CN104142421B (en) | Converting equipment insulated on-line monitoring system and method for work thereof | |
| CN106443206B (en) | Method and device for measuring electric field intensity on surface of high-voltage wire | |
| CN106932631B (en) | A kind of bus voltage measurement device established in single-phase GIS tank body closed end | |
| WO2010081280A1 (en) | Three-phase electric energy measurement apparatus | |
| JP5737750B2 (en) | AC power measuring device | |
| CN103941167A (en) | Multifunctional gas discharging and plasma electric arc detecting device and method | |
| CN108196116A (en) | A kind of zinc oxide lightning arrester block property current on-Line Monitor Device and method based on Zigbee | |
| CN202025054U (en) | Portable creepage current electrified detecting system for support insulator | |
| CN203551641U (en) | Broadband voltage collector | |
| CN101852825B (en) | Broadband online measurement system for corona current of high-voltage power transmission line | |
| CN102305903B (en) | Partial discharge detection method for pulse current of electrified operation single phase integrated gas insulated switchgear (GIS) | |
| CN103592497A (en) | Broadband voltage collector | |
| CN105929218A (en) | Two-channel non-contact measurement device of voltage below 1000V | |
| CN207557405U (en) | A kind of high-tension cable charges partial discharge detection sensor | |
| WO2014063569A1 (en) | Measuring system for measuring ion current field distribution characteristics under direct current transmission | |
| CN103412195A (en) | Electric power collective reading system and method for detecting thunder and lightning environment | |
| CN201156061Y (en) | Counter strike preventing mechanical megameter | |
| CN104142434A (en) | On-line analysis measuring and monitoring system for power quality | |
| CN107044889B (en) | The thermometry of high-voltage arrester | |
| CN209264821U (en) | A kind of Portable insulation material surface conductivity measuring apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Luo Yongfen Inventor after: Zhang Yuanbin Inventor after: Zhang Qi Inventor after: Liu Haicang Inventor after: Wu Jian Inventor after: Bai Xiaochuan Inventor after: Wang Guoli Inventor after: Liu Lei Inventor before: Luo Yongfen Inventor before: Zhang Yuanbin Inventor before: Zhang Qi Inventor before: Liu Haicang Inventor before: Wu Jian Inventor before: Bai Xiaochuan |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171130 Address after: 710049 Xianning West Road, Shaanxi, China, No. 28, No. Co-patentee after: China South Power Grid International Co.,Ltd. Patentee after: XI'AN JIAOTONG University Address before: 710049 Xianning West Road, Shaanxi, China, No. 28, No. Patentee before: Xi'an Jiaotong University |