CN110346632A - A kind of angular difference two-dimensional map expression representing wide area dielectric loss - Google Patents
A kind of angular difference two-dimensional map expression representing wide area dielectric loss Download PDFInfo
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- CN110346632A CN110346632A CN201910607565.9A CN201910607565A CN110346632A CN 110346632 A CN110346632 A CN 110346632A CN 201910607565 A CN201910607565 A CN 201910607565A CN 110346632 A CN110346632 A CN 110346632A
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- angular difference
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- point
- wide area
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/26—Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants ; Measuring impedance or related variables
- G01R27/2688—Measuring quality factor or dielectric loss, e.g. loss angle, or power factor
- G01R27/2694—Measuring dielectric loss, e.g. loss angle, loss factor or power factor
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- 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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a kind of angular difference two-dimensional map expressions for representing wide area dielectric loss.The present invention, which is accomplished by, installs sensor, the synchronous current data obtained and record each monitoring point of each moment of wide area to all monitoring points.The phase information of each monitoring point of each moment is calculated based on the current data of sensor acquisition, point on the basis of a specified wherein monitoring point, and obtain the angular difference conducted between different monitoring points based on the same waveform of synchronization, the Real-time Monitoring Data of angular difference is showed with X-Y scheme interface manner, judges that the state of insulation of high-tension apparatus changes by monitoring the fluctuating change of angular difference.The present invention is innovatively expressed with map mode diagonal difference based on the collected current data of sensor, can wide area synchronously diagonal difference Real-time Monitoring Data carry out X-Y scheme interface show.
Description
Technical field
The invention belongs to atlas analysis to visualize field, and in particular to a kind of angular difference X-Y scheme stave for representing wide area dielectric loss
Up to method.
Background technique
Dielectric loss detection is to reflect one of the main method of dielectric insulation state, convenient for the damage of quantitative analysis insulating materials
Characteristic is consumed, the general tangent value by measurement phase difference (calling " angular difference " in the following text) calculates dielectric loss value, and the fluctuation for passing through dielectric loss value
State reflects the state of insulation of medium.
The development of current information technology is increasingly extensive, and effect and status of the visualization technique in enterprise safety operation are aobvious
It obtains more and more important.But in visualization field, the expression way of angular difference there is no relevant map expression, cannot be visual and clear
Ground monitors the variation of angular difference and dielectric insulation state.
Summary of the invention
The purpose of the present invention is to the deficiencies in the prior art, provide a kind of angular difference two-dimensional map for representing wide area dielectric loss
Expression, concrete thought are as follows:
Sensor, the synchronous electric current number obtained and record each monitoring point of each moment of wide area are installed to all monitoring points
According to.The phase information of each monitoring point of each moment is calculated based on the current data of sensor acquisition, specifies wherein one
Point on the basis of monitoring point, and obtain the angular difference based on the same waveform conduction of synchronization between different monitoring points, by the reality of angular difference
When monitoring data showed with X-Y scheme interface manner, the fluctuating change by monitoring angular difference judges high-tension apparatus
State of insulation variation.
The specific method is as follows:
Step (1) installs sensor in different monitoring points, and wide area is synchronous to be obtained and record each monitoring point of each moment
Current data.Point on the basis of a specified wherein monitoring point, obtains phase information based on the current data of sensor acquisition, counts
Remaining each monitoring point is calculated in the angular difference ΔΦ of synchronization and datum mark, and is excluded by background computer program because of mains-power circuit spy
Property, angular difference changes caused by environmental characteristics, sensor and Acquisition Circuit characteristic.
Step (2) defines the two-dimensional coordinates of map, selects coordinate X-axis as angular difference axis ΔΦ, is each monitoring point and base
On schedule in the differential seat angle of synchronization.The center of angular difference axis is designated as " 0 ", and representing the differential seat angle of the position and datum mark is 0,
The position for illustrating the point is the position of datum mark.
It selects coordinate Y-axis as test point axis D, represents the position of each monitoring point.The height of monitoring point indicates angular difference numerical value
The number of appearance, height is higher, and the number for indicating that the numerical value occurs is more.
Corresponding test point, the detection data of angular difference are mapped in two-dimensional coordinate by step (3), to draw out angular difference two
Tie up map.
Step (4) diagonal difference two-dimensional map is analyzed, because distance causes between monitoring point and datum mark that there are intrinsic angles
Difference, thus the angular difference of each monitoring point and datum mark centered on intrinsic angular difference at normal distribution, that is, spike occur indicates normal；If
Angular difference shifts and continues to increase, that is, hump or continuous hump occurs, illustrates that the apparatus insulated state of the monitoring point occurs
Change.
Usefulness of the present invention:
The present invention innovatively carries out table with map mode diagonal difference based on the collected current data of sensor
Reach, can wide area synchronously diagonal difference Real-time Monitoring Data (including corresponding test point, angular difference) carry out X-Y scheme interface
Show and is analyzed with data.Meanwhile interface expression way is very clear, can effectively realize and be sentenced by the fluctuating change for monitoring angular difference
The state of insulation variation of disconnected high-tension apparatus.
Detailed description of the invention
Fig. 1 is that map of the invention shows example.
Specific implementation
The present invention is described in detail below in conjunction with attached drawing, it is noted that described embodiment is only convenient for pair
Understanding of the invention, and do not play any restriction effect to it.
In practical application, sensor for example is installed with phase different monitoring points in same pressure side our station three-phase and direct connection station, it is real
Existing wide area is synchronous to read current signal, the angular difference of synchronization each monitoring point and datum mark is thus calculated, by the real-time of angular difference
Monitoring data are recorded, and are showed by X-Y scheme interface, are realized by monitoring the variation of angular difference to medium
The monitoring of state of insulation.
The specific steps of the method for the present invention are as follows:
Step (1) at same pressure side our station three-phase and direct connection station with installing sensor in phase different monitoring points, as shown in Figure 1,
Monitoring point is denoted as A0~A10 respectively, specifies monitoring point A0 as datum mark, and is obtained based on the current data of sensor acquisition
Phase information is taken, calculates remaining each monitoring point A1~A10 in the angular difference ΔΦ of synchronization and datum mark A0, and by hind computation
Angular difference caused by machine program is excluded because of mains-power circuit characteristic, environmental characteristics, sensor and Acquisition Circuit characteristic changes.
Step (2) defines coordinate X-axis as angular difference axis ΔΦ, is the angle of each monitoring point and datum mark in synchronization
Difference.Wherein, the center of angular difference axis is designated as " 0 ", and representing the differential seat angle of the position and datum mark is 0, illustrates the position of the point
The as position of datum mark.
It selects coordinate Y-axis as test point axis D, represents the position of each monitoring point.The height of monitoring point indicates angular difference numerical value
The number of appearance, height is higher, and the number for indicating that the numerical value occurs is more.
Corresponding test point, the detection data of angular difference are mapped in two-dimensional coordinate by step (3), to draw out angular difference two
Tie up map.
Step (4) diagonal difference two-dimensional map is analyzed, because distance causes between monitoring point and datum mark that there are intrinsic angles
Difference, thus the angular difference of each monitoring point and datum mark centered on intrinsic angular difference at normal distribution, that is, spike occur indicates normal, table
Bright apparatus insulated state is in normal condition；If angular difference shifts and continues to increase, that is, there is hump or continuous hump, say
The apparatus insulated state of the bright monitoring point is changed.
As shown in Figure 1, the angular difference statistical chart of monitoring point A1~A10 and datum mark, such as the corresponding waveform of monitoring point A5, with
At normal distribution centered on -3 ° of angular difference.There is hump in the waveform of monitoring point A9, i.e., its intrinsic angular difference shifts and persistently increases
Add, illustrates that the apparatus insulated state of monitoring point A9 is changed.
Claims (2)
1. a kind of angular difference two-dimensional map expression for representing wide area dielectric loss, it is characterised in that:
Sensor, the synchronous current data obtained and record each monitoring point of each moment of wide area are installed to all monitoring points；With
The phase information that each monitoring point of each moment is calculated based on the current data of sensor acquisition, specifies a wherein monitoring point
On the basis of point, and obtain and angular difference between different monitoring points conducted based on the same waveform of synchronization, by the real-time monitoring of angular difference
Data application X-Y scheme interface manner is showed, and judges the insulation shape of high-tension apparatus by monitoring the fluctuating change of angular difference
State variation.
2. a kind of angular difference two-dimensional map expression for representing wide area dielectric loss according to claim 1, it is characterised in that packet
Include following steps:
Step (1) installs sensor, the synchronous electric current obtained and record each monitoring point of each moment of wide area in different monitoring points
Data；Point on the basis of a specified wherein monitoring point, obtains phase information based on the current data of sensor acquisition, calculates it
Remaining each monitoring point synchronization and datum mark angular difference ΔΦ, and by background computer program exclude because mains-power circuit characteristic,
The variation of angular difference caused by environmental characteristics, sensor and Acquisition Circuit characteristic；
Step (2) defines the two-dimensional coordinates of map, selects coordinate X-axis as angular difference axis ΔΦ, is each monitoring point and datum mark
In the differential seat angle of synchronization；The center of angular difference axis is designated as " 0 ", and representing the differential seat angle of the position and datum mark is 0, explanation
The position of the point is the position of datum mark；
It selects coordinate Y-axis as test point axis D, represents the position of each monitoring point；The height of monitoring point indicates that angular difference numerical value occurs
Number, height it is higher indicate the numerical value occur number it is more；
Corresponding test point, the detection data of angular difference are mapped in two-dimensional coordinate by step (3), to draw out angular difference X-Y scheme
Spectrum；
Step (4) diagonal difference two-dimensional map is analyzed, because distance causes between monitoring point and datum mark there are intrinsic angular difference, because
For the angular difference of this each monitoring point and datum mark at normal distribution centered on intrinsic angular difference, that is, spike occur indicates normal；If angular difference
It shifts and continues to increase, that is, hump or continuous hump occur, illustrate that the apparatus insulated state of the monitoring point is changed
Become.
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| CN1793990A (en) * | 2005-12-29 | 2006-06-28 | 西安电子科技大学 | On-line monitoring system for capacitor type equipment dielectricless |
| CN1955745A (en) * | 2005-10-24 | 2007-05-02 | 北京伏安电气公司 | Phase measuring method in on-line monitoring of high-voltage electric equipment |
| CN101526562A (en) * | 2009-04-22 | 2009-09-09 | 中国电力科学研究院 | Distributed wireless high-voltage equipment insulating live testing system and testing method |
| CN103760425A (en) * | 2014-01-22 | 2014-04-30 | 湖南大学 | Method and device for rapidly measuring dielectric loss angle based on time domain quasi-synchronization |
| CN106645980A (en) * | 2016-12-29 | 2017-05-10 | 北京世纪航凯电力科技股份有限公司 | Dynamic continuous medium loss measuring system and method for high voltage cable |
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2019
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| CN1955745A (en) * | 2005-10-24 | 2007-05-02 | 北京伏安电气公司 | Phase measuring method in on-line monitoring of high-voltage electric equipment |
| CN1793990A (en) * | 2005-12-29 | 2006-06-28 | 西安电子科技大学 | On-line monitoring system for capacitor type equipment dielectricless |
| CN101526562A (en) * | 2009-04-22 | 2009-09-09 | 中国电力科学研究院 | Distributed wireless high-voltage equipment insulating live testing system and testing method |
| CN103760425A (en) * | 2014-01-22 | 2014-04-30 | 湖南大学 | Method and device for rapidly measuring dielectric loss angle based on time domain quasi-synchronization |
| CN106645980A (en) * | 2016-12-29 | 2017-05-10 | 北京世纪航凯电力科技股份有限公司 | Dynamic continuous medium loss measuring system and method for high voltage cable |
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