CN106771661A - A kind of project of transmitting and converting electricity power-frequency electric field strength monitoring system - Google Patents
A kind of project of transmitting and converting electricity power-frequency electric field strength monitoring system Download PDFInfo
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- CN106771661A CN106771661A CN201611040385.XA CN201611040385A CN106771661A CN 106771661 A CN106771661 A CN 106771661A CN 201611040385 A CN201611040385 A CN 201611040385A CN 106771661 A CN106771661 A CN 106771661A
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- support
- electric field
- frequency electric
- field strength
- monitoring system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
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- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The invention discloses a kind of project of transmitting and converting electricity power-frequency electric field strength monitoring system, the system includes：Sensor, signal transmssion line, display device, support, the sensor is connected by signal transmssion line with the display device, the sensor is fixed on the bracket, wherein, the electric capacity of the support is less than 0.5pF, the equivalent resistance of the support is more than 50G ohm, and it is smaller to realize power-frequency electric field strength monitoring system error, the accurate technique effect of monitoring result.
Description
Technical field
The present invention relates to project of transmitting and converting electricity power-frequency electric field strength monitoring field, in particular it relates to a kind of project of transmitting and converting electricity work
Frequency electric-field intensity monitoring system.
Background technology
Influence of the power transmission and transforming equipment to surrounding enviroment mainly has electromagnetic radiation, noise, ecological environment, visual impact etc..Its
In, power frequency electromagnetic field is the Major environment impacts problem of electric power facility.Accordingly, it would be desirable to enter to project of transmitting and converting electricity power-frequency electric field strength
Row monitoring.
In the prior art, it is main project of transmitting and converting electricity power-frequency electric field strength is carried out using power-frequency electric field strength monitoring system
Monitoring, but existing power-frequency electric field strength monitoring system is through being commonly present error, and error is larger, causes monitoring result to be forbidden
Really.
In sum, present inventor has found above-mentioned technology extremely during the present application technical scheme is realized
There is following technical problem less：
In the prior art, existing power-frequency electric field strength monitoring system has that error is larger, and monitoring result is inaccurate
Technical problem.
The content of the invention
The invention provides a kind of project of transmitting and converting electricity power-frequency electric field strength monitoring system, existing power frequency electric field intensity is solved
Degree monitoring system has that error is larger, the inaccurate technical problem of monitoring result, realizes power-frequency electric field strength monitoring system mistake
Smaller, the accurate technique effect of monitoring result of difference.
Confirmed by the research of inventor and measured data, in the monitoring of project of transmitting and converting electricity power-frequency electric field strength, by passing
Sensor, signal transmssion line, display device, the degree of accuracy of the power-frequency electric field strength monitoring system of support composition are in relative air humidity
Influenceed very big by air humidity after more than 50%, due to causing electric capacity to increase after ambient humidity increase, equivalent resistance diminishes,
The power frequency electric field distribution of project of transmitting and converting electricity is influenceed, causes power-frequency electric field strength measured value to reach as high as 2-8 times of normal value, be solution
Certainly current monitoring system when relative air humidity is more than 50% the obvious errors that exist and do this invention；Therefore, the present invention
Technical problem need to be found by substantial amounts of research, tradition in occur larger error when, staff is right
Sensor, signal transmssion line are studied and improved, it is believed that simple support is little on monitoring result influence, and the application is exactly
The such technology prejudice of customer service, it was found that support is the key factor for influenceing monitoring result.
In order to solve the above technical problems, this application provides a kind of project of transmitting and converting electricity power-frequency electric field strength monitoring system, institute
The system of stating includes：Sensor, signal transmssion line, display device, support, the sensor pass through signal transmssion line and the display
Device is connected, and the sensor is fixed on the bracket, wherein the electric capacity of the support is less than 0.5pF, the support etc.
Effect resistance is more than 50G ohm.When support electric capacity be less than 0.5pF, and support equivalent resistance be more than 50G ohm when, environmental wet
Degree will be smaller to the performance impact of support, ambient humidity become more than 50% when, power-frequency electric field strength monitoring system it is accurate
Degree obtains effective guarantee.Due to causing electric capacity to increase after ambient humidity increase, equivalent resistance diminishes, and influences the work of project of transmitting and converting electricity
Frequency Electric Field Distribution, the reduction that the support in the application can be by a relatively large margin is because ambient humidity causes the reduction of support performance and then causes
Power-frequency electric field strength measurement error.
Further, the material of the support is engineering plastics.Utilizing works plastic processing into support in actual test
In influenceed smaller by ambient humidity, caused error is also smaller.
Further, the support environment temperature be 0 DEG C~40 DEG C, and relative air humidity 20%~95% in the range of
Under the conditions of, when applying 1000V, 2000V, 3000V, 4000V, 5000V voltage respectively to support, the capacitance of support is respectively less than
0.5pF, and the equivalent resistance of support is all higher than 50G ohm.
Further, the support is specially tripod, and the vertical range of foot stool distance from bottom foot stool tie point is 60cm,
Foot stool tie point is 90cm apart from tripod plan vertical distance.So design can reduce the electric capacity of support, increase support
Equivalent resistance, further such that support performance is not easily susceptible to the influence of relative air humidity and temperature, and then ensures transformer station
The accuracy of the monitoring of power-frequency electric field strength.
The method that the present invention takes is that the physics that support used is determined by binding isotherm investigation and comparison measured data belongs to
Property be influence measurement result basic factor, and on this basis selection, design, process, produce can be greatly reduced at present prison
The support of error of the measurement equipment system when relative humidity is more than 50%.
The present invention use principle be：Constituted according to power-frequency electric field strength monitoring system and ultra-high-tension power transmission line, the earth
Circuit, the Analysis of Equivalent Circuit based on capacitance group, by circuit counting, binding isotherm calculated value and ultra-high-tension power transmission line power frequency electric
Field intensity measured value, have studied the various presentations and basic factor for producing error, it is determined that power-frequency electric field strength prison is greatly reduced
Examining system in method of the relative humidity more than 50% time error, design, processing and fabricating provide it is standby relative air humidity 20%~
In the range of 95% using and can ensure the support of in this humidity range worst error no more than normal value 10%.
Key point of the invention is to find influence high-voltage testing room power-frequency electric field strength measurement result to receive environmental wet
The basic factor of influence is spent, error source is analyzed and solve in theory, and determine material, shape, electric capacity and the impedance of support
Deng attribute.
The material of support is engineering plastics, but is not limited only to this kind of material, and any specific insulation and surface hydrophobicity are excellent
In the insulating materials of engineering plastics；
The physical attribute of support：(common environmental temperature is usually 0~40 DEG C, but is not limited only under the conditions of common temperature
This temperature range), in the range of relative air humidity 20~95%, 5000V voltage measurements capacitance is less than 0.5pF, and equivalent electric
Resistance is more than 50G ohm；
The shape of support, structure snd size are protection points.Support is shaped as Three-legged, it is normal place after, the connection of three pin
Point is away from measurement plane of reference 60cm, straight-bar segment length 90cm；
The shape of support is not limited to A-frame, it is any for the measurement of high-voltage testing room power-frequency electric field strength can be with
So that power-frequency electric field strength monitoring sensor is above the ground level, the supporter of certain altitude (0.3m~2m) can be with.
One or more technical schemes that the application is provided, at least have the following technical effect that or advantage：
Electric capacity is designed as less than 0.5pF, equivalent resistance more than 50G ohm as a result of original sensor support is substituted for
Support, using the support of such design, the influence that environment is received when relative humidity is more than 50% is smaller, power-frequency electric field strength
The monitoring precision of monitoring system ensured, so, solve existing power-frequency electric field strength monitoring larger, the prison that there is error
Survey the inaccurate technical problem of result, and then it is smaller to realize power-frequency electric field strength monitoring error, the accurate technology of monitoring result
Effect.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes of the application
Point, do not constitute the restriction to the embodiment of the present invention；
Fig. 1 is the composition schematic diagram of project of transmitting and converting electricity power-frequency electric field strength monitoring system in the application；
Fig. 2 is the structural representation of project of transmitting and converting electricity power-frequency electric field strength monitoring support in the application；
Wherein, 1- straight sections support bar, 2- terminal pads, 3- trishores, 4- supports, 5- sensors, 6- signal transmssion lines, 7-
Display device.
Specific embodiment
The invention provides a kind of project of transmitting and converting electricity power-frequency electric field strength monitoring system, existing power frequency electric field intensity is solved
Degree monitoring system has that error is larger, the inaccurate technical problem of monitoring result, realizes power-frequency electric field strength monitoring system mistake
Smaller, the accurate technique effect of monitoring result of difference.
It is below in conjunction with the accompanying drawings and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied to be further described in detail the present invention.It should be noted that in the case where not conflicting mutually, the application's
Feature in embodiment and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the present invention, but, the present invention may be used also
Implemented with the other modes in the range of using other being different from being described herein, therefore, protection scope of the present invention do not receive down
The limitation of specific embodiment disclosed in face.
Embodiment one：
In embodiment one, there is provided a kind of project of transmitting and converting electricity power-frequency electric field strength monitoring system, Fig. 1 is refer to, it is described
System includes：Sensor 5, signal transmssion line 6, display device 7, support 4, the sensor are aobvious with described by signal transmssion line
Showing device is connected, and the sensor is fixed on the bracket, wherein, the electric capacity of the support is specially：Less than 0.5pF, institute
The equivalent resistance for stating support is specially：More than 50G ohm.
Fig. 2 is refer to, wherein, support is specifically included：1- straight section support bars, 2- terminal pads, 3- trishores.
Further, the material of the support is engineering plastics.
Further, the support environment temperature be 0 DEG C~40 DEG C, and relative air humidity 20%~95% in the range of
Under the conditions of, when applying 1000V, 2000V, 3000V, 4000V, 5000V voltage respectively to support, the capacitance of support is respectively less than
0.5pF, and the equivalent resistance of support is all higher than 50G ohm.
Further, the support is specially tripod, and the vertical range of foot stool distance from bottom foot stool tie point is 60cm,
Foot stool tie point is 90cm apart from tripod plan vertical distance.
The method that the present invention takes is that the physics that support used is determined by binding isotherm investigation and comparison measured data belongs to
Property be influence measurement result basic factor, and on this basis selection, design, process, produce can be greatly reduced at present prison
The support of error of the measurement equipment system when relative humidity is more than 50%.
The present invention use principle be：Constituted according to power-frequency electric field strength monitoring system and ultra-high-tension power transmission line, the earth
Circuit, the Analysis of Equivalent Circuit based on capacitance group, by circuit counting, binding isotherm calculated value and ultra-high-tension power transmission line power frequency electric
Field intensity measured value, have studied the various presentations and basic factor for producing error, it is determined that power-frequency electric field strength prison is greatly reduced
Examining system in method of the relative humidity more than 50% time error, design, processing and fabricating provide it is standby relative air humidity 20%~
In the range of 95% using and can ensure the support of in this humidity range worst error no more than normal value 10%.
Key point of the invention is to find influence high-voltage testing room power-frequency electric field strength measurement result to receive environmental wet
The basic factor of influence is spent, error source is analyzed and solve in theory, and determine material, shape, electric capacity and the impedance of support
Deng attribute.
The material of support is engineering plastics, but is not limited only to this kind of material, and any specific insulation and surface hydrophobicity are excellent
In the insulating materials of engineering plastics；
The physical attribute of support：(common environmental temperature is usually 0~40 DEG C, but is not limited only under the conditions of common temperature
This temperature range), in the range of relative air humidity 20~95%, 5000V voltage measurements capacitance is less than 0.5pF, and equivalent electric
Resistance is more than 50G ohm；
The shape of support, structure snd size are protection points.Support is shaped as Three-legged, it is normal place after, the connection of three pin
Point is away from measurement plane of reference 60cm, straight-bar segment length 90cm；
The shape of support is not limited to A-frame, it is any for the measurement of high-voltage testing room power-frequency electric field strength can be with
So that power-frequency electric field strength monitoring sensor is above the ground level, the supporter of certain altitude (0.3m~2m) can be with.
One or more technical schemes that the application is provided, at least have the following technical effect that or advantage：
Electric capacity is designed as less than 0.5pF, equivalent resistance more than 50G ohm as a result of original sensor support is substituted for
Support, using the support of such design, the influence that environment is received when relative humidity is more than 50% is smaller, power-frequency electric field strength
The monitoring precision of monitoring system ensured, so, solve existing power-frequency electric field strength monitoring larger, the prison that there is error
Survey the inaccurate technical problem of result, and then it is smaller to realize power-frequency electric field strength monitoring error, the accurate technology of monitoring result
Effect.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification without deviating from essence of the invention to the present invention
God and scope.So, if these modifications of the invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising these changes and modification.
Claims (4)
1. a kind of project of transmitting and converting electricity power-frequency electric field strength monitoring system, it is characterised in that the system includes：Sensor, signal
Transmission line, display device, support, the sensor are connected by signal transmssion line with the display device, and the sensor is consolidated
Determine on the bracket, wherein, the electric capacity of the support is less than 0.5pF, and the equivalent resistance of the support is more than 50G ohm.
2. project of transmitting and converting electricity power-frequency electric field strength monitoring system according to claim 1, it is characterised in that the support
Material is engineering plastics.
3. project of transmitting and converting electricity power-frequency electric field strength monitoring system according to claim 1, it is characterised in that the support exists
Environment temperature be 0 DEG C~40 DEG C, and relative air humidity 20%~95% in the range of under the conditions of, support is applied respectively 1000V,
When 2000V, 3000V, 4000V, 5000V voltage, the capacitance of support is respectively less than 0.5pF, and the equivalent resistance of support is equal
More than 50G ohm.
4. project of transmitting and converting electricity power-frequency electric field strength monitoring system according to claim 1, it is characterised in that the support tool
Body is tripod, and the vertical range of foot stool distance from bottom foot stool tie point is 60cm, and foot stool tie point hangs down apart from tripod top
Straight distance is 90cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611040385.XA CN106771661B (en) | 2016-11-21 | 2016-11-21 | A kind of project of transmitting and converting electricity power-frequency electric field strength monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611040385.XA CN106771661B (en) | 2016-11-21 | 2016-11-21 | A kind of project of transmitting and converting electricity power-frequency electric field strength monitoring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106771661A true CN106771661A (en) | 2017-05-31 |
| CN106771661B CN106771661B (en) | 2019-08-13 |
Family
ID=58974057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611040385.XA Active CN106771661B (en) | 2016-11-21 | 2016-11-21 | A kind of project of transmitting and converting electricity power-frequency electric field strength monitoring system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462777A (en) * | 2017-09-15 | 2017-12-12 | 中国电力科学研究院 | A kind of system and method for being used to carry out multichannel power frequency electric field measurement under high humidity conditions |
| CN108761274A (en) * | 2018-05-28 | 2018-11-06 | 国网河南省电力公司电力科学研究院 | Extra-high voltage alternating current-direct current parallel powerline electromagnetic environment continuous monitoring trolley |
| CN108801344A (en) * | 2018-05-28 | 2018-11-13 | 国网河南省电力公司电力科学研究院 | Extra-high voltage alternating current-direct current parallel powerline electromagnetic environment continuous monitoring system |
| CN113804983A (en) * | 2021-09-23 | 2021-12-17 | 北京森馥科技股份有限公司 | Power frequency electric field measuring device, system and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2878574Y (en) * | 2006-02-21 | 2007-03-14 | 曹世龙 | Crossed concrete reinforced bar supporter |
| US20080253792A1 (en) * | 2003-12-04 | 2008-10-16 | Hiroyuki Suhara | Method and device for measuring surface potential distribution, method and device for measuring insulation resistance, electrostatic latent image measurement device, and charging device |
| JP2009123132A (en) * | 2007-11-19 | 2009-06-04 | Nec Corp | Printed circuit board design support device, printed circuit board design support method, and printed circuit board design-support program |
| CN202903896U (en) * | 2012-10-22 | 2013-04-24 | 山西省电力公司长治供电分公司 | Wireless power frequency electric field intensity measuring device |
| CN103675483A (en) * | 2013-12-05 | 2014-03-26 | 国网电力科学研究院武汉南瑞有限责任公司 | All-weather power frequency electric field measuring device |
| CN205539213U (en) * | 2016-01-22 | 2016-08-31 | 苏州市百信环境检测工程技术有限公司 | Apparatus for improving accuracy of power frequency electric field intensity detecting device |
-
2016
- 2016-11-21 CN CN201611040385.XA patent/CN106771661B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080253792A1 (en) * | 2003-12-04 | 2008-10-16 | Hiroyuki Suhara | Method and device for measuring surface potential distribution, method and device for measuring insulation resistance, electrostatic latent image measurement device, and charging device |
| CN2878574Y (en) * | 2006-02-21 | 2007-03-14 | 曹世龙 | Crossed concrete reinforced bar supporter |
| JP2009123132A (en) * | 2007-11-19 | 2009-06-04 | Nec Corp | Printed circuit board design support device, printed circuit board design support method, and printed circuit board design-support program |
| CN202903896U (en) * | 2012-10-22 | 2013-04-24 | 山西省电力公司长治供电分公司 | Wireless power frequency electric field intensity measuring device |
| CN103675483A (en) * | 2013-12-05 | 2014-03-26 | 国网电力科学研究院武汉南瑞有限责任公司 | All-weather power frequency electric field measuring device |
| CN205539213U (en) * | 2016-01-22 | 2016-08-31 | 苏州市百信环境检测工程技术有限公司 | Apparatus for improving accuracy of power frequency electric field intensity detecting device |
Non-Patent Citations (3)
| Title |
|---|
| 张召文等: "尽量减少输变电工频电场测量中", 《环境科学导刊》 * |
| 张广洲等: "输变电工程工频电场实时智能监测系统设计", <<水电能源科学>> * |
| 赵福祥等: "测量工频电磁场应注意的问题", 《环境监测管理与技术》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462777A (en) * | 2017-09-15 | 2017-12-12 | 中国电力科学研究院 | A kind of system and method for being used to carry out multichannel power frequency electric field measurement under high humidity conditions |
| CN108761274A (en) * | 2018-05-28 | 2018-11-06 | 国网河南省电力公司电力科学研究院 | Extra-high voltage alternating current-direct current parallel powerline electromagnetic environment continuous monitoring trolley |
| CN108801344A (en) * | 2018-05-28 | 2018-11-13 | 国网河南省电力公司电力科学研究院 | Extra-high voltage alternating current-direct current parallel powerline electromagnetic environment continuous monitoring system |
| CN113804983A (en) * | 2021-09-23 | 2021-12-17 | 北京森馥科技股份有限公司 | Power frequency electric field measuring device, system and method |
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| Publication number | Publication date |
|---|---|
| CN106771661B (en) | 2019-08-13 |
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