CN105974275A - Partial discharge monitoring sensor optimized arrangement method and system - Google Patents
Partial discharge monitoring sensor optimized arrangement method and system Download PDFInfo
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- CN105974275A CN105974275A CN201610219041.9A CN201610219041A CN105974275A CN 105974275 A CN105974275 A CN 105974275A CN 201610219041 A CN201610219041 A CN 201610219041A CN 105974275 A CN105974275 A CN 105974275A
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- sensor
- transmission coefficient
- electromagnetic transmission
- partial discharge
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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
- G01R31/1254—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 gas-insulated power appliances or vacuum gaps
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- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to a partial discharge monitoring sensor optimized arrangement method and system. The partial discharge monitoring sensor optimized arrangement system comprises an electromagnetic transmission coefficient measuring instrument, GIS equipment, two sensors and an upper computer, and is characterized in that the two sensors are respectively installed at setting positions on the GIS equipment, the electromagnetic transmission coefficient measuring instrument is respectively connected with the two sensors, radio frequency signals are injected into the GIS equipment at one sensor, and the injected radio frequency signals are received at the other sensor, and an electromagnetic transmission coefficient between the installation positions of the two sensors is calculated; and the electromagnetic transmission coefficient measuring instrument is connected with the upper computer, the electromagnetic transmission coefficient is transmitted to the upper computer, and the upper computer calculates installation positions and the number of installed sensors according to the all electromagnetic transmission coefficients. The method and the system provided by the invention solve defects of an existing mode of formulating a GIS partial discharge monitoring sensor arrangement scheme according to experience, a partial discharge phenomenon of a GIS is monitored comprehensively, and the number of used sensors is the least.
Description
Technical field
The invention belongs to insulation of electrical installation monitoring technical field, be specifically related to partial discharge monitoring sensors optimum placement method
And system.
Background technology
The state of insulation of closed gas insulation in combined electric appliance (GIS) is closely related with partial discharge phenomenon.Shelf depreciation meeting
The electromagnetic wave signal of number of shots gigahertz (GHz) in GIS internal transmission, catches what shelf depreciation excited by sensor
Electromagnetic wave signal carries out on-line monitoring to the state of insulation of GIS, for ensureing equipment safety, finds that defect serves crucial work
With.
According to different electric pressures and connection type, the general difference of GIS device structure at the scene, to electromagnetic wave
Transmission produce different impact.Under conditions of comprehensive monitoring GIS equipment partial discharge phenomenon, plan as a whole cost-effectiveness requirement,
The sensor mounting arrangements scheme rule of thumb formulated has been slipped, and also can use the feelings of relatively multisensor
Condition, thus cause the wasting of resources, thus be badly in need of the most automatically derived a kind of sensor mounting arrangements prioritization scheme system and
Method.
Summary of the invention
The invention provides partial discharge monitoring sensors optimum placement method and system, to solve existing rule of thumb to formulate
During GIS partial discharge monitoring sensor mounting arrangements scheme, sensor mounting location is inaccurate causes careless omission or sensor resource wave
The problem taken.
For solving above-mentioned technical problem, the partial discharge monitoring sensors optimum placement method of the present invention comprises the steps:
1) on GIS device any two setting position install sensor, by two sensors respectively with electromagnetic transmission coefficient
Measuring instrument connects, and injects radiofrequency signal through a sensor to GIS device, and another sensor is for receiving penetrating of injection
Frequently signal, is finally calculated the electromagnetic transmission coefficient between two sensor mounting location by electromagnetic transmission coefficient measuring instrument；
2) according to step 1) travel through the electromagnetic transmission coefficient measured between all setting positions；
3) according to when the mould of electromagnetic transmission coefficient is more than setting value, only sensor is installed in a position in two positions,
Otherwise, being required to install the principle of sensor, comprehensive all of electromagnetic transmission coefficient two positions, determining need to be to be mounted
The position of sensor and number.
Described any two setting position is adjacent two setting positions.
Described setting position is GIS disc insulator, and the number of GIS disc insulator is 8.
Described sensor is outer sensor, is installed on GIS disc insulator.
Described electromagnetic transmission coefficient measuring instrument is Two-port netwerk vector network analyzer.
The partial discharge monitoring sensors optimum placement system of the present invention include electromagnetic transmission coefficient measuring instrument, GIS device, two
Individual sensor and host computer, two sensors are separately mounted on the setting position in GIS device, described electromagnetic transmission coefficient
Measuring instrument is connected with two sensors respectively, injects radiofrequency signal through a sensor to GIS device, another sensor
For receiving the radiofrequency signal of injection, electromagnetic transmission coefficient measuring instrument electromagnetism between two sensor mounting location of computing
Transmission coefficient；Electromagnetic transmission coefficient measuring instrument is connected with host computer, and electromagnetic transmission coefficient is transferred to host computer, and host computer is combined
Close all of electromagnetic transmission coefficient and judge to need position and the number of sensor to be mounted.
Described magnetic transmission coefficient measuring instrument and for GIS device inject radiofrequency signal sensor between be provided with power amplification
Device.
Described magnetic transmission coefficient measuring instrument and be provided with low noise amplification between the sensor of the radiofrequency signal that receives injection
Device.
Described any two setting position is adjacent two setting positions.
Described electromagnetic transmission coefficient measuring instrument is Two-port netwerk vector network analyzer.
Beneficial effects of the present invention: the method and system of the present invention are by measuring electricity between the two sensors in GIS device
Magnetic transmission coefficient, and the electromagnetic transmission coefficient aggregation process measured by diverse location, be given cost-effective by optimized algorithm
Sensor mounting arrangements scheme, solves the existing deficiency rule of thumb formulating GIS partial discharge monitoring sensor positioning scheme,
Partial discharge phenomenon and the sensor used of comprehensive monitoring GIS are minimum.
Accompanying drawing explanation
Fig. 1 is that partial discharge monitoring sensors optimum placement system connection diagram (measures S52)；
Fig. 2 is that partial discharge monitoring sensors optimum placement system connection diagram (measures S21)；
Fig. 3 is that GIS disc insulator 1 to 8 travels through combinatorial matrix.
Detailed description of the invention
Below in conjunction with the accompanying drawings, technical scheme is further described in detail.
Partial discharge monitoring sensors optimum placement system embodiment
GIS device housing is cylindrical metal body, can be considered as the electromagnetism wave energy of circular waveguide, characteristic frequency and pattern at GIS
Device interior transmits, and therefore, the present embodiment can extract GIS partial discharge radiofrequency signal electromagnetic transmission coefficient by in-site measurement,
Draw optimization sensor mounting arrangements scheme.Concrete scheme is as follows:
As it is shown in figure 1, the GIS partial discharge monitoring sensors optimum placement system of the present embodiment includes that electromagnetic transmission coefficient is surveyed
Amount instrument, GIS device, two sensors and host computer, two sensors are separately mounted on the setting position in GIS device,
Described electromagnetic transmission coefficient measuring instrument is connected with two sensors respectively, injects radio frequency letter to GIS device at a sensor
Number, at another sensor device, receive the electromagnetism biography that the radiofrequency signal union injected goes out between two sensor mounting location
Defeated coefficient；Electromagnetic transmission coefficient measuring instrument is connected with host computer, and electromagnetic transmission coefficient is transferred to host computer, host computer according to
All of electromagnetic transmission coefficient calculations goes out the installation site of sensor and installs number.
Electromagnetic transmission coefficient measuring instrument in the present embodiment uses Two-port netwerk vector Network Analyzer, certainly as other embodiment party
Formula, it is possible to use other kinds of measuring instrument..
The monitoring sensor of the present embodiment can be divided into built-in sensor and external sensor, preferred external in the present embodiment
Sensor, for external sensor, the setting position of the present embodiment is GIS disc insulator, has 8, as Fig. 1,
Shown in Fig. 2,1～8 represent GIS disc insulator, and external sensor is arranged on GIS disc insulator, it is possible to inject
Or reception radiofrequency signal.Certainly, the present embodiment may be used without built-in sensor, and built-in sensor is installed on GIS and sets
Standby inside, is connected with Two-port netwerk vector Network Analyzer through GIS device housing by coaxial cable.
Further, in order to improve certainty of measurement, can be at Two-port netwerk vector Network Analyzer and for injecting radio frequency to GIS device
Between the sensor of signal, power amplifier is set, so that the radiofrequency signal at GIS device internal communication strengthens, it is easy to connect
Contracture is analysed.
Further, can be at Two-port netwerk vector Network Analyzer and arrange low between the sensor of the radiofrequency signal that receives injection
Noise amplifier.
In the present embodiment, computer 12 is communicated with described vector network analyzer 9 with ICP/IP protocol by netting twine.
Computer 12 is responsible for storage measurement data and calculates sensors optimum placement scheme.Vector network analyzer 9, power are put
Big device 10, low-noise amplifier 11, sensor 13, sensor 14 are all attached with radio frequency coaxial-cable.
Partial discharge monitoring sensors optimum placement embodiment of the method
The method of the present embodiment uses above-mentioned partial discharge monitoring sensors optimum placement system, and concrete system structure is the most no longer
It is discussed in detail.The method of the present embodiment comprises the steps:
1) sensor is installed on GIS any two setting position, two sensors are measured with electromagnetic transmission coefficient respectively
Instrument connects, and injects radiofrequency signal to GIS device at a sensor, receives the radio frequency injected at another sensor device
Signal union goes out the electromagnetic transmission coefficient between two sensor mounting location；
2) according to step 2) travel through and measure the electromagnetic transmission coefficient between all setting positions；
3) comprehensive all of electromagnetic transmission coefficient, judges the installation site of described sensor according to the size of electromagnetic transmission coefficient
And installation number.
Below above-mentioned steps is further elaborated:
Step 1, described vector network analyzer 9 connects sensor 13 and to described sensor through described power amplifier 10
13 send measurement signal；
Step 2, described vector network analyzer 9 connects sensor 14 through described low-noise amplifier 11 and receives described sensing
The measurement signal that device 14 receives；
Step 3, such as matrixShown in, sensor 13 is installed at disc insulator 1, and sensor 14 is installed on benzvalene form
At insulator 2；
Step 4, measures electromagnetic transmission coefficient between disc insulator 1 and disc insulator 2, with vector network analyzer 9
Measurement data is carried out storing record by the computer 12 connected；
Step 5, according to matrix group shown in Fig. 3, repeat step 1 to step 4 traversal measure all disc insulators of GIS it
Between electromagnetic transmission coefficient.
In the present embodiment, electromagnetic transmission coefficient S between GIS disc insulatorij(i > j) is plural number, SijMould | Sij| represent basin
The amplitude response of signal, S between formula insulator i and disc insulator jijArgument represent disc insulator i and benzvalene form insulation
The phase response of signal between sub-j, system shown in Figure 1 connected mode represents measurement electromagnetic transmission coefficient S52, system shown in Fig. 2
System connected mode represents measurement electromagnetic transmission coefficient S21。
In the present embodiment, the matrix of consequence that computer 12 obtains according to measurementPass
Defeated coefficient SijMould | Sij| during more than setting value, represent that between disc insulator i and disc insulator j, signal attenuation is little, permissible
One sensor is installed in one of two positions；Otherwise, transmission coefficient SijMould | Sij| during less than setting value, represent that benzvalene form is exhausted
Between edge i and disc insulator j, signal attenuation is big, in order to cover the whole GIS device of monitoring comprehensively, needs two positions
Put and be respectively mounted sensor.According to mentioned above principle, computer 12 can draw the local of GIS device to be measured according to special algorithm
The installation site of electric discharge monitoring sensor and installation number.
Acquisition partial discharge monitoring is described in detail below as a example by measuring the electromagnetic transmission coefficient between adjacent disc insulator
The installation site of sensor and the detailed process of installation number:
First the electromagnetic transmission coefficient S between two adjacent disc insulators is measured21(disc insulator 1 and disc insulator 2 it
Between be bypass structure, without corner structure), with | S21On the basis of |, matrix of consequence is processed, less than benchmark | S21| transmission
Coefficient | Sij| being set to 0, otherwise be set to 1 not less than the transmission coefficient of benchmark, the GIS device for structure shown in Fig. 1 is permissible
Matrix of consequence after being processedOn diagonal of a matrix, value is the transmission coefficient corresponding to element of zero
It is S32、S54And S87, according to being marked under transmission coefficient at disc insulator 2,3,4,5,7,8, sensor can be installed；
Simultaneously on diagonal of a matrix value be the transmission coefficient corresponding to element of 1 be S21、S43、S65And S76, transmission coefficient subscript is corresponding
Disc insulator to (1,2), (3,4), (5,6), (6,7), it is only necessary to respectively select at one installation sensor.To sum up, may be used
To draw unique sensor mount scheme, install at disc insulator 2,3,5,7,8.
It should be noted last that, above example is only in order to illustrate technical scheme and unrestricted, although with reference to relatively
The present invention has been described in detail by good embodiment, it will be understood by those within the art that, can be to the technology of invention
Scheme is modified or equivalent, and without deviating from the spirit and scope of technical solution of the present invention, it all should be contained at this
In the middle of bright right.
Claims (10)
1. partial discharge monitoring sensors optimum placement method, it is characterised in that the method comprises the steps:
1) on GIS device any two setting position install sensor, by two sensors respectively with electromagnetic transmission coefficient
Measuring instrument connects, and injects radiofrequency signal through a sensor to GIS device, and another sensor is for receiving penetrating of injection
Frequently signal, is finally calculated the electromagnetic transmission coefficient between two sensor mounting location by electromagnetic transmission coefficient measuring instrument；
2) according to step 1) travel through the electromagnetic transmission coefficient measured between all setting positions；
3) according to when the mould of electromagnetic transmission coefficient is more than setting value, only sensor is installed in a position in two positions,
Otherwise, being required to install the principle of sensor, comprehensive all of electromagnetic transmission coefficient two positions, determining need to be to be mounted
The position of sensor and number.
Partial discharge monitoring sensors optimum placement method the most according to claim 1, it is characterised in that described any two
Individual setting position is adjacent two setting positions.
Partial discharge monitoring sensors optimum placement method the most according to claim 1, it is characterised in that described setting position
Being set to GIS disc insulator, the number of GIS disc insulator is 8.
Partial discharge monitoring sensors optimum placement method the most according to claim 3, it is characterised in that described sensor
For outer sensor, it is installed on GIS disc insulator.
5. according to the arbitrary described partial discharge monitoring sensors optimum placement method of claim 1-4, it is characterised in that described
Electromagnetic transmission coefficient measuring instrument is Two-port netwerk vector network analyzer.
6. partial discharge monitoring sensors optimum placement system, it is characterised in that this system include electromagnetic transmission coefficient measuring instrument,
GIS device, two sensors and host computer, two sensors are separately mounted on the setting position in GIS device, described
Electromagnetic transmission coefficient measuring instrument is connected with two sensors respectively, injects radiofrequency signal through a sensor to GIS device,
Another sensor is for receiving the radiofrequency signal of injection, and electromagnetic transmission coefficient measuring instrument is used for two sensor installation positions of computing
Electromagnetic transmission coefficient between putting；Electromagnetic transmission coefficient measuring instrument is connected with host computer, is transferred to upper by electromagnetic transmission coefficient
Machine, the comprehensive all of electromagnetic transmission coefficient of host computer judges to need position and the number of sensor to be mounted.
Partial discharge monitoring sensors optimum placement system the most according to claim 6, it is characterised in that described magnetic transmits
Coefficient measuring instrument and for GIS device inject radiofrequency signal sensor between be provided with power amplifier.
Partial discharge monitoring sensors optimum placement system the most according to claim 6, it is characterised in that described magnetic transmits
Coefficient measuring instrument and be provided with low-noise amplifier between the sensor of the radiofrequency signal that receives injection.
Partial discharge monitoring sensors optimum placement system the most according to claim 6, it is characterised in that described any two
Individual setting position is adjacent two setting positions.
10. according to the arbitrary described partial discharge monitoring sensors optimum placement system of claim 6-9, it is characterised in that institute
Stating electromagnetic transmission coefficient measuring instrument is Two-port netwerk vector network analyzer.
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| CN201610219041.9A CN105974275B (en) | 2016-04-08 | 2016-04-08 | Partial discharge monitoring sensors optimum placement method and system |
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| CN201610219041.9A CN105974275B (en) | 2016-04-08 | 2016-04-08 | Partial discharge monitoring sensors optimum placement method and system |
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| CN105974275B CN105974275B (en) | 2019-02-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109143002A (en) * | 2018-10-26 | 2019-01-04 | 重庆大学 | Capacitive pick-up optimum design method built in a kind of cable connector shelf depreciation |
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| CN103197212A (en) * | 2013-03-29 | 2013-07-10 | 国家电网公司 | Global information system (GIS) partial discharge on-line monitoring calibration instrument and configuration authentication method thereof |
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| CN204287401U (en) * | 2014-12-26 | 2015-04-22 | 国家电网公司 | The arrangement apparatus of gas insulated transformer substation GIS built-in sensors |
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| CN109143002A (en) * | 2018-10-26 | 2019-01-04 | 重庆大学 | Capacitive pick-up optimum design method built in a kind of cable connector shelf depreciation |
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