CN110244109A - A kind of wide area end shield earth current three-dimensional figure spectrum expression - Google Patents
A kind of wide area end shield earth current three-dimensional figure spectrum expression Download PDFInfo
- Publication number
- CN110244109A CN110244109A CN201910604384.0A CN201910604384A CN110244109A CN 110244109 A CN110244109 A CN 110244109A CN 201910604384 A CN201910604384 A CN 201910604384A CN 110244109 A CN110244109 A CN 110244109A
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- monitoring point
- point
- dimensional
- monitoring
- 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
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of wide area end shield earth current three-dimensional figure to compose expression.The present invention is accomplished by selection different monitoring points installation sensor, monitoring point may be selected with phase different monitoring points or the synchronous detection of ipsilateral three-phase wide area, obtain and record the current value of all monitoring point synchronizations, obtained data are shown with three-dimensional statistical chart, according to graphic change Trend judgement dielectric loss situation.Interface expression of the present invention is very clear, can intuitively find out that a certain observation point insulating is changed.The present invention can detect three-phase synchronism, also can detect the synchronism with mutually each monitoring point.
Description
Technical field
The invention belongs to map expression analysis fields, and in particular to a kind of wide area end shield earth current three-dimensional figure stave reaches
Method.
Background technique
110kV main transformer outlet method mainly uses capacitive casing, and bottom shielding of bushing is detection main transformer Partial discharge signal, the ginseng such as dielectric loss
Number critical positions.The insulation breakdown for the voltage and current that end shield ground connection mainly prevents end shield from introducing makes its electrification later, has and protects
Protect the effect of equipment and operator's safety.The common detection method of end shield earth current is earth resistance, but to monitoring
It is had the disadvantages that when data are analyzed
1. data are not specific, the number counted is complex, and text is various, the situation of change to information and different groups
Comparison between not is unobvious.
2. figure is not three-dimensional, the chart that X-Y scheme obtains, can only reflection planes variation, i.e. two datas variation, not enough
It is three-dimensional.
Summary of the invention
The present invention is that shortcoming is expressed based on end shield earth current measurement data, and a kind of wide area end shield of proposition is grounded electricity
It flows three-dimensional figure and composes expression.Concrete thought is as follows:
Select different monitoring points that sensor is installed, monitoring point may be selected synchronous with phase different monitoring points or ipsilateral three-phase wide area
Detection, obtains and records the current value of all monitoring point synchronizations, shows obtained data with three-dimensional statistical chart, according to
Graphic change Trend judgement dielectric loss situation.
The technical solution adopted by the present invention to solve the technical problems the following steps are included:
Step (1): the three-dimensional chart in basis is established, it is as follows that basic chart establishes criterion:
Select corresponding X-axis for time shaft t, for all monitoring point synchronizations acquisition the record moment, time scale
Resolution ratio can set (second, point, when, day, the moon, year), the resolution ratio of time shaft can be selected according to actual needs.
It selects Y-axis for test point axis D, indicates the position of each monitoring point, be that selection according to actual needs needs to count display
Monitoring point；
It selects Z axis for current value I, indicates each monitoring point real-time current value.
Step (2): corresponding time point, test point, current value are mapped in three-dimensional map, draw all monitoring point electricity
Flow trend chart.
Step (3): data analysis is carried out to the monitoring and statistics map of completion, all monitoring point variation tendencies unanimously show just
Often, if a certain monitoring point with other monitoring point variation tendencies it is inconsistent if show that the monitoring point insulating is abnormal.
Beneficial effects of the present invention are as follows:
(1) interface of the present invention understands, very clear, can intuitively find out that a certain monitoring point insulating is abnormal.
(2) the method for the present invention map is drawn simple, innovative usage map synchronous reflection monitoring point insulating in wide scope
Situation.
Figure of description
Fig. 1 is that map of the invention shows example.
Specific embodiment
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.
As shown in fig. 1, three-phase integrated main transformer high-pressure side A/B/C and each phase of medium voltage side Am/Bm/Cm and CT are shown as
The synchronous detection of AcT/BcT/CcT wide area, and record all monitoring point current values.
Step (1): the three-dimensional chart in basis is established, it is as follows that basic chart establishes criterion:
Select corresponding X-axis for time shaft t, for all monitoring point synchronizations acquisition the record moment, time scale
Resolution ratio can set (second, point, when, day, the moon, year), the resolution ratio of time shaft can be selected according to actual needs.As Fig. 1 is selected
When time scale resolution ratio is, interior every two hour all monitoring point current values when 12 are recorded.
It selects Y-axis for test point axis D, indicates the position of each monitoring point, can select to need to count display according to actual needs
Monitoring point.
It selects Z axis for current value I, indicates the real-time current value of each monitoring point.
Step (2): corresponding time point, test point, current value are mapped in three-dimensional map, draw all monitoring point electricity
Flow trend chart.
Step (3): carrying out data analysis to the monitoring and statistics map of completion, and the present invention as shown in Figure 1, can show same simultaneously
Mutually different test points or the synchronous detection of ipsilateral three-phase wide area as a result, referring specifically to plots changes.All monitoring point variations
Trend unanimously shows normally, to show that the monitoring point insulating occurs if a certain monitoring point and other monitoring point variation tendencies are inconsistent
It is abnormal.
As shown in Figure 1, the curent change trend of middle pressure Bm and other monitoring points are significantly different, illustrate that the Bm pipe insulation that is nested has
It is abnormal.
Claims (1)
1. a kind of wide area end shield earth current three-dimensional figure composes expression, it is characterised in that include the following steps:
Step (1): the three-dimensional chart in basis is established, it is as follows that basic chart establishes criterion:
Select corresponding X-axis for time shaft t, for the record moment of all monitoring point synchronizations acquisition, the resolution of time scale
Rate is set as needed；
It selects Y-axis for test point axis D, indicates the position of each monitoring point, be the prison that selection needs to count display according to actual needs
Measuring point；
It selects Z axis for current value I, indicates each monitoring point real-time current value；
Step (2): corresponding time point, test point, current value are mapped in three-dimensional map, are drawn all monitoring point electric currents and are become
Change tendency chart；
Step (3): carrying out data analysis to the monitoring and statistics map of completion, and all monitoring point variation tendencies unanimously show normally,
If a certain monitoring point with other monitoring point variation tendencies it is inconsistent if show that the monitoring point insulating is abnormal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910604384.0A CN110244109B (en) | 2019-07-05 | 2019-07-05 | Wide-area end screen grounding current three-dimensional map expression method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910604384.0A CN110244109B (en) | 2019-07-05 | 2019-07-05 | Wide-area end screen grounding current three-dimensional map expression method |
Publications (2)
| Publication Number | Publication Date |
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| CN110244109A true CN110244109A (en) | 2019-09-17 |
| CN110244109B CN110244109B (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910604384.0A Active CN110244109B (en) | 2019-07-05 | 2019-07-05 | Wide-area end screen grounding current three-dimensional map expression method |
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| CN202903892U (en) * | 2012-05-15 | 2013-04-24 | 山东惠工电气股份有限公司 | A transformer station capacitance on-line monitoring device based on a wireless mode |
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2019
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| CN202903892U (en) * | 2012-05-15 | 2013-04-24 | 山东惠工电气股份有限公司 | A transformer station capacitance on-line monitoring device based on a wireless mode |
| CN105005665A (en) * | 2015-07-27 | 2015-10-28 | 广州供电局有限公司 | Method and system for ultrahigh frequency radiation characteristic simulation of oil impregnated paper condenser sleeve end screen |
| CN105182250A (en) * | 2015-08-24 | 2015-12-23 | 北京国电通网络技术有限公司 | Non-intruding type distributed power output monitoring device |
| CN106093722A (en) * | 2016-06-13 | 2016-11-09 | 国网上海市电力公司 | The location of a kind of cable local discharge and recognition methods |
| CN107632048A (en) * | 2017-05-25 | 2018-01-26 | 浙江海洋大学 | A kind of monitoring of LNAPLs subsurface three-dimensionals migration process and data processing method |
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| CN110244109B (en) | 2021-10-08 |
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